array(22) {
  ["id"] => string(3) "156"
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  ["title"] => string(95) "The Impact of Different Storage Temperatures on Key Aroma Components of Cold-pressed Walnut Oil"
  ["keywords"] => string(86) "hydraulic Oil Press,cocoa butter press,nut oil press,peanut oil press,sesame oil press"
  ["description"] => string(181) "CHOCOMACH professional production and sales of hydraulic oil press,cocoa butter press,nut oil press,peanut oil press,sesame oil press.Contact WhatsApp +8619937995959,7*24h service. "
  ["content"] => string(9309) "<p>To provide scientific reference for the low-temperature storage of cold-pressed walnut oil（<a href="https://www.chocooilpress.com/" target="_self" title="hydraulic Oil Press,cocoa butter press,nut oil press,peanut oil press,sesame oil press" style="color: rgb(192, 0, 0); text-decoration: underline;"><span style="color: rgb(192, 0, 0);">nut oil press</span></a>）, this study explored the effects of temperature on the quality and key aroma components of walnut oil by simulating different low-temperature storage environments. Cold-pressed walnut oil was stored at 25. 4. -10. and -20 ℃ for 8 weeks, and changes in acid value and peroxide value during storage were monitored. In addition, electronic nose and solid-phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS) were used to analyze flavor compounds and volatile components, and key aroma components were screened based on relative odor activity values. The results showed that low-temperature storage could effectively delay the deterioration of walnut oil quality, with -20 ℃ storage demonstrating excellent performance in retaining the fresh flavor and key aroma components of walnut oil to the greatest extent, providing data support for walnut storage practices.</p><p style="text-align: center"><img src="/uploads/2025-11-11/69129bab15589.png" title="核桃油4(1)" alt="核桃油4(1).png"/></p><p>1. Materials and Methods</p><p>1.1 Test materials</p><p>Test sample: Cold-pressed walnut oil (freshly prepared, without added preservatives).</p><p>Main instruments: Electronic nose (for qualitative analysis of flavor compounds), Gas Chromatography-Mass Spectrometry (GC-MS) (for quantitative detection of volatile components), Solid-phase microextraction fiber head (for extraction of volatile components), Titrimeter (for determination of acid value and peroxide value).</p><p>Test reagents: hydrochloric acid, sodium thiosulfate, phenolphthalein indicator, etc. (all of which are analytically pure).</p><p>1.2 Test method</p><p>1.2.1 Sample processing</p><p>The fresh low-temperature pressed walnut oil was separately packaged in transparent sealed containers and stored in constant temperature environments at 25. 4. -10. and -20 ℃ for a storage period of 8 weeks. Samples were taken weekly to measure relevant indicators.</p><p>1.2.2 Determination of quality indicators</p><p>Acid value: Refer to GB 5009.229 - 2016 "National Food Safety Standard - Determination of Acid Value in Foods", and use titration method to measure, reflecting the degree of hydrolysis of oils and fats.</p><p>Peroxide value: Referring to GB 5009.227-2016 "National Food Safety Standard - Determination of Peroxide Value in Foods", the sodium thiosulfate titration method is used to reflect the initial degree of oil oxidation.</p><p>1.2.3 Analysis of flavor and volatile components</p><p>Electronic nose analysis: Take an appropriate amount of sample and place it in a dedicated sample vial. The electronic nose sensor array detects flavor compounds and analyzes the differences in the types of flavor compounds (such as nitrogen oxides, hydrocarbons, etc.) under different storage conditions.</p><p>SPME-GC-MS analysis: Solid-phase microextraction (SPME) fiber heads are used to adsorb volatile components in the sample. After gas chromatography separation, the types and contents of components are determined by mass spectrometry detection, and the categories and quantities of aroma components are statistically analyzed.</p><p>1.2.4 Identification of key aroma components</p><p>Key aroma components are screened by calculating the Relative Odor Activity Value (ROAV). Components with ROAV ≥ 1 are key aroma components that primarily contribute to the overall flavor, while those with ROAV between 0.1 and 1 are secondary aroma components.</p><p style="text-align: center;"><img src="https://www.chocomach.com/uploads/2025-10-29/690169100ec3c.jpg" title="核桃油2" alt="核桃油2.jpg"/></p><p>II. Results and Analysis</p><p>2.1 Changes in acid value and peroxide value of walnut oil under different storage temperatures</p><p>With the extension of storage time and the increase in storage temperature, both the acid value and peroxide value of cold-pressed walnut oil showed an upward trend. However, the indicators for all temperature groups did not exceed the national standard limits (GB/T 22327-2019 "Walnut Oil").</p><p>25℃ group: The acid value and peroxide value increased rapidly, and both indicators reached their high values after 8 weeks, indicating that the hydrolysis and oxidation reactions of oils and fats were more intense under normal temperature storage.</p><p>-20℃ group: The increase rates of the two indicators were slow, and the difference from the initial value after 8 weeks was small, indicating that low temperature can significantly inhibit oil deterioration.</p><p>2.2 Analysis results of electronic nose</p><p>The detection results from the electronic nose sensor array indicate that the flavor compounds of low-temperature pressed walnut oil primarily consist of nitrogen oxides, hydrocarbons, terpenes, sulfides, alcohols, aldehydes, and ketones.</p><p>Flavor similarity: The flavor response values of walnut oil stored at -20℃ are close to those of fresh walnut oil, indicating good flavor retention. However, the flavor response values of walnut oil stored at 25℃ differ significantly from those of fresh samples, indicating noticeable flavor deterioration.</p><p>Temperature influence: As the storage temperature decreases, the variation range of the types and contents of flavor compounds diminishes, indicating a significant protective effect of low temperature on flavor stability.</p><p>2.3 Analysis of aroma component types and contents</p><p>A total of 39 aroma components were detected through SPME-GC-MS, with the specific classification as follows:</p><p>Aldehydes: 17 types, representing the aroma category with the highest content, and are important contributors to the flavor of walnut oil.</p><p>Hydrocarbons: 11 types, accounting for the second largest proportion, and having a certain auxiliary effect on flavor.</p><p>Other categories: including 4 acids, 2 alcohols, 1 ketone, and 4 other compounds, which collectively constitute the characteristic flavor of walnut oil.</p><p>2.4 Changes in key aroma components</p><p>Fresh walnut oil: A total of 17 key aroma components were detected, determining its fresh flavor characteristics.</p><p>Changes after storage: After 8 weeks of storage, there were differences in both the number and types of key aroma components among different temperature groups:</p><p>25℃ group: 12 key aroma components were detected, with 7 shared with fresh samples.</p><p>4℃ group: 13 key aroma components were detected, with 7 components shared with fresh samples.</p><p>-10 ℃ group: 12 key aroma components were detected, with 7 shared with fresh samples.</p><p>-20℃ group: 13 key aroma components were detected, with 10 components shared with fresh samples, making it the group with the most key aroma components shared with fresh samples among all temperature groups.</p><p>III. Conclusion</p><p>Through analyzing the quality and flavor of cold-pressed walnut oil stored under different low-temperature conditions, this study draws the following conclusions:</p><p>Low-temperature storage can effectively delay the hydrolysis and oxidation reactions of walnut oil, and the lower the storage temperature, the more significant the effect. The acid value and peroxide value of all temperature groups meet the national standard requirements.</p><p>Electronic nose analysis indicates that storage at -20 ℃ can largely retain the initial flavor of walnut oil, while storage at 25 ℃ has a significant impact on flavor.</p><p>Analysis of key aroma components reveals that walnut oil stored at -20℃ shares a high number of key aroma components (10 types) with fresh samples, better preserving the fresh flavor characteristics.</p><p>In summary, low temperature is the preferred condition for walnut oil storage. Storage at -20℃ can maintain the superior quality and flavor of walnut oil for 8 weeks, which is close to that of fresh walnut oil. This result can provide a scientific reference for the optimization of storage processes in walnut oil production enterprises and preservation methods for household users.</p><p>Source: "The Impact of Different Storage Temperatures on Key Aroma Components of Cold-pressed Walnut Oil"</p>"
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array(22) {
  ["id"] => string(3) "155"
  ["category_id"] => string(2) "24"
  ["title"] => string(224) "CHOCOMACH was invited to bring a fully automatic hydraulic oil press to participate in the 2025 China Economic Forest Association Woody Oil Branch and National Walnut Oil and Processing Industry Alliance Joint Annual Meeting"
  ["keywords"] => string(86) "hydraulic Oil Press,cocoa butter press,nut oil press,peanut oil press,sesame oil press"
  ["description"] => string(181) "CHOCOMACH professional production and sales of hydraulic oil press,cocoa butter press,nut oil press,peanut oil press,sesame oil press.Contact WhatsApp +8619937995959,7*24h service. "
  ["content"] => string(29155) "<p>Recently, the joint annual meeting of the China Economic Forest Association Woody Oil Branch and the National Walnut Oil and Walnut Processing Industry Innovation Strategic Alliance, sponsored by the China Economic Forest Association Woody Oil Branch, Hainan Jian'anbao Industrial Co., Ltd., and the National Key Laboratory of Woody Oil Resource Utilization, and supported by the China Oil and Fat Magazine, was held in Ankang, Shaanxi on October 17th. Chen Minggao, Party Committee Member of Hunan Academy of Forestry Sciences, Li Yuping, Chief Engineer of Hunan Forestry Bureau, He Dongping, President of the Oil and Fat Branch of China Grain and Oil Society, Lu Hailong, Chairman of the National Walnut Oil and Walnut Processing Industry Innovation Strategic Alliance (hereinafter referred to as the "Alliance"), Song Huigang, Executive Vice President of China Economic Forestry Association (hereinafter referred to as the "Association"), Chen Yongzhong, President of the Woody Oil Branch of China Economic Forestry Association (hereinafter referred to as the "Branch"), and Qu Jianguo, Executive Chairman and President of Hainan Jian'anbao Industrial Co., Ltd. attended the meeting and delivered speeches.</p><section><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5Ihu7SYricqn85NicrJ1RUjVicbPJmIB4Dic3SI6pxQMgqbuhricvXR9ibvOQ/640?wx_fmt=jpeg&wxfrom=13&tp=wxpic#imgIndex=1" alt="图片"/></section><p><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRNDibl7Xr9gLB5pExnHPriaf1ibkm0R8FVfIo1YJYhib0CEcTaqBib7wgH9cDkL5UGJYaicXJHHxMpHTZ2w/640?wx_fmt=jpeg&wxfrom=13&tp=wxpic#imgIndex=2" alt="图片"/></p><p>The opening ceremony was presided over by Miao Rongchen, Secretary General of the Alliance and President of China Oil and Fat Magazine, and Xiao Zhihong, Director of the Economic Forestry Research Institute of Hunan Academy of Forestry Sciences.</p><section><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5ICVM4E7oJe1nWOOGwoKA3NUUTw94B4WzFVvAbibpiayUqXlLwv41yia7A/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=3" alt="图片"/></section><p>Lu Hailong, Chairman of the National Walnut Oil and Walnut Processing Industry Innovation Strategic Allianceintroduced that the walnut industry in China is currently in a critical period of transformation and upgrading. The conference, with the theme of 'Smart Core, Leading Oil Quality Life', aims to inject new momentum into the development of the industry. Faced with the new requirements of the 15th Five Year Plan, the Walnut Industry Alliance will focus on promoting three major tasks: strengthening standard setting, deepening industry chain collaboration, and building a platform for achievement transformation. We look forward to working together with all sectors to explore domestic and international markets with new quality productivity, making the walnut and woody oil industry an important pillar of rural revitalization and national grain and oil security.</p><section><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5mdRFK54QmtsKE4icSx9fZibcd1HB5lklNGvb3g2BEO679jmYMWvwiaCicQ/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=4" alt="图片"/></section><p>Chen Yongzhong, President of the Woody Oil Branch of the China Economic Forestry Association, summarized the significant achievements made by the Woody Oil Branch in scientific and technological innovation and industrial upgrading in 2025. In terms of scientific and technological innovation, key technologies such as oil tea seed oil baking have reached the international leading level and won multiple important awards; The National Key Laboratory for the Utilization of Woody Oil Resources has solidified the foundation of its scientific research platform. In terms of industrial empowerment, the branch has provided strong support for major project construction and the upgrading of the entire industry chain, promoting the transformation of achievements through technical training, demonstration base construction, and other means. In 2026. the branch will focus on industry pain points, deepen industry university research cooperation and industrial technology services, strengthen organizational support, integrate high-quality resources, focus on technological innovation and achievement transformation, promote sustainable and healthy development of the industry, and make greater contributions to the national grain and oil security and rural revitalization strategic goals.</p><section><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5RfT8Ra4VeENJ2XbricAyF4ViaglCUbvbs3v5lgUGQZrGLBoFdkdcwBCw/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=5" alt="图片"/></section><p>He Dongping, President of the Oil and Fat Branch of the China Grain and Oil Society, emphasized that woody oil is an important supplement to China's oil and fat supply, and walnut oil plays an important role in it. The quality, processing quality, and safety traceability system of walnut oil play a very important role in extending, supplementing, and strengthening the walnut industry chain. The Oil and Fat Sub Technical Committee of the National Grain and Oil Standardization Technical Committee has officially launched the revision of the national standard for walnut oil, aiming to improve the quality of walnut oil and promote the high-quality development of the industry through standard guidance. This annual meeting coincides with the 40th anniversary of the establishment of the Oil and Fat Branch. We hope that all grain and oil science and technology workers will forge ahead, never forget their original aspirations, and continue to strive for the stable and far-reaching development of China's grain and oil industry!</p><section><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5S8wkqlSicf9oSFUtp0dA5FIRAtFUZNmJpkj3ib9CndkcJ9lic218khzaA/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=6" alt="图片"/></section><p>Chen Minggao, the Party Committee member of Hunan Academy of Forestry, briefly introduced the important research achievements of Hunan Academy of Forestry in the field of woody oilseeds. We hope that in the future, the branch and alliance will deepen cooperation in four aspects: opening up and sharing scientific research platform resources, jointly carrying out key technology research and development, accelerating the transformation and demonstration application of achievements, and deepening talent exchange and sharing mechanisms. With the platform of the branch and alliance, we will further strengthen the collaborative innovation of industry, academia and research, jointly promote the woody oil industry to move towards a scale of billions, cultivate new driving forces for the industry, and promote high-level development of science and technology in the industry.</p><section><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5sR0OR9GgzIeC8LoSoWOdhicbu7vspkbPgVdKSJticfpYeC0ibQICnLiajg/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=7" alt="图片"/></section><p>Li Yuping, Chief Engineer of Hunan Forestry Bureau, said: "In recent years, the scale of China's woody oil industry has continued to expand, with significant achievements, making important contributions to ensuring grain and oil safety and promoting farmers' income increase. As a major forestry province, Hunan Province is at the forefront of the country in the development of industries such as oil tea. The high-level development of the industry requires strengthening seed industry research and development, deep processing, and the integration of the tertiary industry to improve industrial quality and efficiency. Facing the future, open cooperation is the only way, deepening regional coordinated development, expanding international cooperation space, and building a new pattern of industrial development with complementary advantages and mutual benefit. It plays an important role in promoting the high-value development of the woody oil industry, accelerating the construction of an agricultural power, and promoting the construction of ecological civilization.</p><section><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5CmiateE7AyrOGSqFYJwPBnAuFdDZ4UibErdhtnXyPe1R1XgBZkJvEEHg/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=8" alt="图片"/></section><p>In the past year, the branch and alliance have achieved significant results in promoting the transformation of scientific and technological innovation achievements and the comprehensive utilization of by-products. In the future, the association will focus on key technological breakthroughs, seize development opportunities through strengthening government industry university research collaborative innovation, and create a standardized, branded, and ecological modern industrial system. It will also actively build communication platforms to promote upstream and downstream cooperation in the industrial chain, play a good role as a bridge and link, and jointly promote the sustainable development of China's woody oil industry.</p><section><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5ibnI8s0YUxNNkIovrsNlEXZdxfBakLf5DJhYiaPzpbpkibibeuHZVR7ApQ/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=9" alt="图片"/></section><p>Qu Jianguo, Executive Chairman and President of Hainan Jian'anbao Industrial Co., Ltd., expressed the company's vision of "technological breakthroughs, brand upgrades, and production and sales coordination". In the future, we will continue to make good use of the production advantages of Ankang walnut eugenics area and build a tripartite linkage platform of "scientific research institutions+processing enterprises+planting bases": allowing experts' cutting-edge technologies to find landing "test fields", enabling innovative products of the enterprise to connect with high-quality "raw material sources", connecting walnut resources in Ankang and southern Shaanxi to broader "sales ends", promoting the coordinated development of the entire industry chain, and creating a new chapter of high-quality development of the walnut industry.</p><p><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5hj3ts4eMau7QXc8icakRj4NxZXnTJSltyia8piatwwMedxogJP9RYRu1Q/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=10" alt="图片"/></p><p>The academic report and enterprise exchange session were hosted by Professor Liu Guoqin from South China University of Technology, Vice Secretary General of the Alliance and Associate Professor Gao Pan from Wuhan University of Light Industry, Engineer Miao Yongjun from Hunan Academy of Forestry Sciences, and Researcher Wei Bing from COFCO Engineering (Xi'an) International Engineering Co., Ltd.</p><p><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5K5cVPFMKT4chcpDOKrNkQycbHkgiaHYcP2oCX6ptQOgd23wFibAl6t2w/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=11" alt="图片"/></p><p>Researcher Li Changzhu from Hunan Academy of Forestry Sciences presented a report titled "Methodology for Mining Camellia oleifera Health Resources and Green High Value Conversion Technology for Products". He systematically elaborated on the mining and green high value conversion technology of Camellia oleifera health resources, clarified the health effect mechanism of Camellia oleifera seed oil and its derivatives, and verified their roles in lowering blood lipids, improving liver fibrosis, regulating insulin sensitivity, and inhibiting biofilm formation; Based on the synergistic effect of saponins and essential oils, daily chemical products with hair growth effects have been developed, and the use of tea saponins for compost fermentation regulation has been promoted, demonstrating the broad application prospects of the oil tea industry in the field of health.</p><p><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5seh3ldfwsetzfn0sRUYgWmea6aTBchwF7q2jZUkhSnG39jZL7EibKzw/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=12" alt="图片"/>Professor Liu Yulan from Henan University of Technology gave a report on the importance of walnut oil preservation, focusing on the quality and safety of walnut oil. She provided professional explanations on the risk prevention and control of chloropropanol esters and glycidyl esters, the impact of storage packaging on safety and quality, and the role of different oil storage methods in the comprehensive quality of oils and fats, providing important technical support and scientific basis for improving the quality of walnut oil products, ensuring the safety of national grain and oil supply, and promoting national health.</p><p><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5dxtzgTfib28GLBEdgqavCiaasaaWngg39gE8yIatvGJL4uHDs7fBEAfg/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=13" alt="图片"/>Professor Shen Yehua from Xi'an University of Technology systematically elaborated on the full chain innovation from walnut oil composition to biological function and peptide research, focusing on precision nutrition and product development of walnuts. The report points out the challenges faced by current research: the complexity of plant oil composition analysis, the uncertainty of functional substances, and the limitations of product development. Relevant research has been conducted on the three major challenges faced by current plant oil research, establishing a high coverage and high sensitivity analysis method for walnut oil triglycerides and associated substances, and an online database of walnut oil substance composition. Characteristic markers such as triglycerides and gamma tocopherol have been screened, achieving accurate identification and adulteration detection of walnut oil, providing important theoretical basis and technical support for the deep development and scientific utilization of walnut nutritional components.</p><p><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5aKfu6WhoCknKic5uiboMtqmNrO48FUheYPpOyas08xNw8bOhActSBN3A/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=14" alt="图片"/></p><p>Researcher Xue Yalin from the Scientific Research Institute of the National Grain and Material Reserve Administration presented and explained in detail the quality and nutritional indicators of walnut oil products with standard guidance as the core. She pointed out that walnut oil is rich in nutrients and has important development opportunities in the current imbalance of dietary fatty acid intake among Chinese residents. By scientifically formulating standards and guiding consumption reasonably, the nutritional value of walnut oil can be fully utilized, and it is called for to adjust the dietary structure and advocate for the public to consume walnut oil scientifically and reasonably, providing important guidance for promoting the high-quality development of the walnut oil industry.</p><p><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5uSmicbx8mUBlG6prN38MA3bhpibKYpFGf97636sIic9rxNG0o9FhNTqicA/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=15" alt="图片"/></p><p>Professor Chen Yi from Nanchang University systematically elaborated on the chemical markers of camellia oil processing and their lipid-lowering effects in his report. Based on data fusion strategy, processing dependent biomarkers such as theaflavins B, alpha tocopherols, lutein, phospholipids, fatty acids, and triglycerides were screened, and the lipid-lowering effects of camellia oil prepared by different processes such as hot pressing, cold pressing, and water enzyme method were compared and analyzed. Cold pressed camellia oil has shown excellent performance in improving blood lipid abnormalities and liver function damage. This study provides scientific basis for the precise processing and healthy application of camellia oil, which is of great significance for promoting the development of functional oil industry.</p><p><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5gl8jJF2dZPRaewNtiaibkicasRJ0slVkic1HVicsn6DupQAGsE1efQibiclIg/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=16" alt="图片"/></p><p>Professor Liu Guoqin from South China University of Technology gave a report titled "Research on the Transdermal Properties of Camellia Oil Microemulsions Rich in Tea Saponin and Quercetin and Their Inhibition on Propionibacterium acnes". He introduced a camellia oil microemulsion system containing quercetin and oil tea saponin, which proved that quercetin and oil tea saponin have synergistic antibacterial effects on Propionibacterium acnes. Combined use can reduce the drug concentration of the two when administered separately, improve their safety, and the drug loaded microemulsion can be applied to treat ear acne models, providing new ideas for acne treatment and inspiration for the diversified development of woody oilseeds.</p><p><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5RzicMHtDegma2PEiaskDV3RQpfibDlMv3icTjdWCRsYeibWATibCLB2qPskQ/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=17" alt="图片"/></p><p>Professor Luo Anwei from Northwest A&F University has conducted in-depth research in the field of walnut green skin active substance separation. He has compared and optimized the walnut green skin heat pump drying technology, which is easy to promote and operate, suitable for large-scale production, energy-saving and consumption reducing, and has a high yield of active substances. He has also developed an electron beam irradiation coupled with ultrasonic assisted extraction technology for walnut green skin active substances, clarified the active role of walnut green skin active substances, and successfully developed daily chemical products such as walnut green skin antibacterial hand sanitizer, strawberry preservative, and plant hair dye, achieving high-value utilization of agricultural waste.</p><p><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5oGZrFcthzgDRPjrAFC22bTCiaLGicNUic4CJoWccFbI2eKicS7GCrq7Jtw/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=18" alt="图片"/></p><p>Professor Xu Daochun from Beijing Forestry University gave a detailed explanation of the innovative achievements of walnut intensive harvesting equipment. Based on the theory of walnut harvesting machinery, through continuous optimization of key parameters, three generations of large-scale lateral branch flexible shaking harvesting equipment were successfully developed, making a positive contribution to improving the automation of walnut processing machinery.</p><section><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5icbBnokiaY9KUfBpK51I8akwHNxqOQCUibxyib0pqbAiaCW7eA9SquU8kcg/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=19" alt="图片"/></section><p>Researcher Wei Bing from COFCO Engineering (Xi'an) International Engineering Co., Ltd. gave a comprehensive presentation and introduction on walnut oil degumming technology, acid and plastic removal technology, enzymatic production of strong flavored walnut oil technology, low-temperature multi effect production and intelligent moderate refining key technology of walnut oil, research on antioxidant component regulation technology of walnut oil, and multi effect stabilization technology of walnut oil. This is of great significance for improving the green development and industrialization demonstration of walnut oil processing technology.</p><p>Dr. Wang Lei, on behalf of Professor Wu Suxi from Changsha University of Science and Technology, introduced the research results on the resource utilization of oil tea cake. He detailed that China's annual output of oil tea cake is about 4 million tons, which is rich in starch, protein, tea saponin and other components, but the resource utilization rate is still relatively low. The alkaline extraction enzymatic hydrolysis process is used to extract starch, which is then modified with fatty acids and applied to noodle processing, significantly reducing the glycemic index of the product. The small molecule whitening peptide with tyrosinase inhibitory activity prepared by extracting protein from cake provides important technical support for the extension and supplementation of the oil tea industry chain and the improvement of comprehensive benefits.</p><p><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5NFEIDTicpcepACNibD3h3TicyHxUL9yeog25sXBWChoQeOtvZrxA8AxZg/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=20" alt="图片"/></p><p>Professor Xu Duoxia of Beijing Technology and Business University focused on the structural characteristics of vegetable oil and its high-value application in the food industry, discussed the composition, physical stability mechanism and interfacial emulsification adsorption behavior of the oil body. Based on the natural emulsification characteristics of the oil body, he successfully constructed an efficient delivery system for curcumin and other active substances, and innovatively constructed an in vitro simulated digestion evaluation system for different populations, explained the digestion and utilization law of oil curcumin lotion and the mechanism to alleviate colitis in mice, providing a new idea for the development of natural emulsifiers and active substance delivery systems in the food industry.</p><p><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5eU70UQ3OuDH8q25Zawv9Zr2V4KbQ7L1yrhkOKxNeHcbpCOnZbT7qLg/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=21" alt="图片"/></p><p>Associate Professor Gao Pan from Wuhan University of Light Industry gave a special report on the key technologies of walnut processing. Professor Gao focused on the influence mechanism of processing technology on the quality of walnut oil, and systematically introduced innovative products such as walnut direct drinking oil, walnut fat plastid and walnut oil gel. At the same time, a detailed explanation was given on the high-value utilization technology path of walnut cake and meal, which provides important theoretical support and practical guidance for the development of high value-added products and comprehensive resource utilization in the walnut industry.</p><p><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5CmEYpmVweTJrGhvnjU57KIRoW83eT5gKQqHAyoE9eCT1DcDoT4POsg/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=22" alt="图片"/></p><p>Associate researcher Li Ying from Jinan University provided a systematic exposition on the high-value comprehensive utilization of Shancangzi resources. The report focuses on the green extraction technology of Shan Cangzi essential oil and kernel oil, as well as the application of Shan Cangzi kernel oil. The report points out that high extraction yield and stronger antioxidant activity of Litsea cubense essential oil can be obtained through solvent-free microwave extraction technology; In terms of application, Shan Cangzi kernel oil can be processed to prepare bio lubricating base oil and plant coating wax, effectively expanding its application prospects in chemical, food packaging and other fields, reflecting the sustainable development concept of full resource utilization.</p><p><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5Z7lW7UHvlZ5JB5ibqBf6icpDucjOQUiaKa5nfhp24eZz8rYiczbfJ3ib2zQ/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=23" alt="图片"/></p><p>Associate Professor Shen Dagang from Ankang College elaborated on the construction of a prevention and control system for walnut rot disease, including its biological characteristics, epidemic influencing factors, monitoring and warning, and green prevention and control technologies. The report emphasizes that the occurrence of diseases is jointly affected by tree vigor, environment (such as high humidity and freezing damage), and human management (such as improper pruning and incomplete clearing of gardens). It proposes an integrated technical system of "monitoring and early warning green prevention and control", including agricultural management, biological control, physical and chemical precision pesticide application and other measures. After being applied in the demonstration park, the incidence of diseased plants significantly decreased, and the yield and quality were greatly improved, verifying the effectiveness and promotional value of the system.</p><section><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5580iapruKNd9GicBcYEm2BVVtaIy9t6lXnJkB2llhnq3P5xsV0m8UuJQ/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=24" alt="图片"/></section><p>CHOCOMACH's General Manager Shi Xuepeng, Chairman Wang Zhongzheng of Gansu Jiuyuan Agriculture and Forestry Technology Co., Ltd., Technical Director Dong Shaofeng of Paierte (Tianjin) Automation Technology Co., Ltd., and Engineer Yang Qingbo of COFCO Engineering Testing and Certification Co., Ltd. focus on cutting-edge technology, intelligent equipment, and industrial upgrading in the field of walnut oil and grain and oil processing. From four dimensions of process innovation, intelligent equipment, digital management, and quality certification, the system presents the innovative path of the walnut oil industry, providing new ideas for industry upgrading.</p><p>More than 100 scholars, researchers, and enterprise representatives from the walnut industry across the country attended the conference, and CHOCOMACH was invited to participate with its fully automatic <a href="http://www.chocomach.com/" target="_blank" title="hydraulic Oil Press,cocoa butter press,nut oil press,peanut oil press,sesame oil press"><span style="color: rgb(255, 0, 0);">hydraulic oil press</span></a>.</p><section><img class="rich_pages wxw-img" src="https://mmbiz.qpic.cn/sz_mmbiz_jpg/iasLxkiaicqwRPLOHk8Jfu7wvicwqQSTsJF5kPSw7erH6Y4dI5k5gSj57Ibg2ib6yeNmfiaONyKicibv0ZZyA9BqlG8Xew/640?wx_fmt=jpeg&tp=wxpic&wxfrom=5&wx_lazy=1#imgIndex=25" alt="图片"/></section><p><br/></p>"
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  ["title"] => string(130) "CHOCOMACH Leads Industry Upgrade with Hydraulic Pressing Technology at the 2025 International Sesame Industry Technology Symposium"
  ["keywords"] => string(86) "hydraulic Oil Press,cocoa butter press,nut oil press,peanut oil press,sesame oil press"
  ["description"] => string(181) "CHOCOMACH professional production and sales of hydraulic oil press,cocoa butter press,nut oil press,peanut oil press,sesame oil press.Contact WhatsApp +8619937995959,7*24h service. "
  ["content"] => string(7623) "<p>The 2025 International Sesame Industry Technology Symposium was held in Zhengzhou province,china. CHOCOMACH is leading the industry upgrade with its <a href="https://chocooilpress.com/" target="_blank" title="hydraulic Oil Press,cocoa butter press,nut oil press,peanut oil press,sesame oil press">hydraulic oil press</a> technology.</p><p style="text-align: center"><img src="/uploads/2025-10-13/68ec8f3e2a470.jpg" title="wechat_2025-10-13_114535_600" alt="wechat_2025-10-13_114535_600.jpg"/></p><p>The 2025 International Sesame Industry Technology Symposium was recently held in Zhengzhou province,china. Over 300 industry chain representatives, experts, and scholars from over 20 countries and regions gathered for in-depth discussions on key topics such as technological innovation in sesame deep processing and intelligent production. Luoyang Zhaoge Environmental Protection Technology Co., Ltd., a leading domestic company in hydraulic pressing equipment, was invited to participate. Their presentation of their fully automatic horizontal hydraulic pressing production line and sesame processing solutions using the CHOCOMACH brand's fully automatic <a href="https://chocooilpress.com/equipment/automatic-hydraulic-oil-press/detail/139.html" target="_blank" title="hydraulic Oil Press,cocoa butter press,nut oil press,peanut oil press,sesame oil press">hydraulic oil press </a>attracted widespread attention in the industry.</p><p>Deeply rooted in hydraulic technology, a long-standing foundation forges innovative strength.</p><p>CHOCOMACH's participation in the symposium stems from its extensive technical expertise and contributions to the industry. Leveraging the technological foundation of the Ruyang County Hydraulic Machinery Plant in Henan Province, established in 1958. the company has grown into a high-tech enterprise integrating R&D, production, and service since its founding in 2018. The company has received numerous prestigious certifications, including "Henan Province's First Major Technical Equipment" and "Henan Province's Specialized, Refined, and Innovative Small and Medium-sized Enterprise," and holds a total of 23 patents. Through industry-university-research collaborations with institutions such as Henan Institute of Technology and COFCO Engineering, its technological achievements have been successfully applied to the processing of various oilseeds, including sesame and walnuts, with products exported to Southeast Asia and Europe.</p><p style="text-align: center"><img src="/uploads/2025-10-13/68ec8f4f0a574.jpg" title="wechat_2025-10-13_114822_295" alt="wechat_2025-10-13_114822_295.jpg"/></p><p>Core Technology Unveiled, Addressing Pain Points in the Sesame Processing Industry</p><p>During the technology sharing session, the director of CHOCOMACH detailed the innovative breakthroughs in the fully automatic horizontal hydraulic pressing line, addressing the industry's challenge of balancing high nutrient retention with efficient production.</p><p>Low-temperature Precision Pressure Control Technology: Utilizing a high- and low-pressure dual-pump system, the system achieves high pressures up to 55 MPa, material pressures up to 90 MPa, and operating pressures up to 2860 T. Combined with low-temperature constant temperature control, this technology enables full cold pressing. Tests have shown that this technology reduces sesame protein denaturation to ≤5% and increases vitamin E and polyphenol retention by 30%, perfectly meeting the nutritional requirements of high-end sesame oil.</p><p>Continuous Production Breakthrough: Utilizing a 4-22-chamber tandem design and a PLC intelligent control system, the entire process of loading, pressing, and cake unloading is fully automated, requiring only one operator to operate each unit. This solves the labor-intensive, intermittent production challenges of traditional equipment. Based on data from a similar walnut kernel production line, this system can process up to 45 tons of oil per 24 hours, with a cake oil residue rate exceeding national standards.</p><p>Green and low-carbon design: The entire machine consumes only 18.5kW of energy, and its circulating water utilization rate exceeds 95%, significantly reducing energy consumption compared to traditional equipment and aligning with the industry's green development trends.</p><p>CHOCOMACH Brand Empowers Multi-Scenario Sesame Processing Solutions</p><p>Targeting the needs of businesses of varying sizes, CHOCOMACH is promoting its own-brand "CHOCOMACH" fully automatic <a href="https://www.chocooilpress.com/" target="_blank" title="hydraulic Oil Press,cocoa butter press,nut oil press,peanut oil press,sesame oil press">hydraulic oil press</a> production line. Leveraging its core "filter cloth-free horizontal press" technology, this series of equipment offers three key advantages in sesame processing:</p><p>Flexible Adaptability: Available in multiple models, including the YZL-270/300/325. YZW, YZYW, YZBW, YZQW, and HPFB, the single-load capacity can meet the "just-in-time processing" needs of small workshops, the large-scale production of medium-sized enterprises, and the scaled-down, automated production requirements of large oil mills.</p><p>Quality Controllability: The end-face oil outlet design, combined with a multi-stage filtration system, significantly improves crude oil purity, reducing subsequent refining costs. It is particularly suitable for high-end small-mill sesame oil processing and low-temperature cold-pressing of raw sesame oil.</p><p>Cost Competitiveness: Energy-efficient and efficient, with minimal equipment wear and tear and a low failure rate, and a global after-sales service network, effectively reducing operational and maintenance costs.</p><p>Strong Industry Resonance, Accelerating Technology Upgrades</p><p>At the seminar, numerous experts highly praised CHOCOMACH's technological achievements. A representative from the China Chamber of Commerce for Import and Export of Foodstuffs, Native Produce, and Animal Products noted that this technology perfectly aligns with the development direction of sesame deep processing: "efficient extraction, intelligent production, and environmentally friendly practices." Its low residual oil content and high nutrient retention will help Chinese sesame products break through quality barriers in international markets like the EU. Major grain and oil companies in Jiangsu and Henan have expressed interest in collaboration, and commissioning of the relevant production lines is about to begin.</p><p>A representative from CHOCOMACH stated that the company will leverage this seminar to further deepen its research and development of sesame processing technology. The company plans to launch specialized pressing equipment for sesame peptide extraction by 2026. further improving its "seed oil and sesame powder co-production" solution and providing technical support for the high-quality development of the global sesame industry.</p>"
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