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Extraction of the skin to light of different quality of seed oil
Elements, trace metals and phospholipids and other polar substances can not be extracted, the extraction of impurities less; and ultrasonic and microwave extraction selectivity is not strong, pigments, trace metals and also comes with phospholipids and other polar substances extracted, so the ultrasonic and microwave extraction of light skin seed oil than supercritical CO: Automatic extraction of more oxidized peroxides. This may be the emergence of supercritical CO,[link widoczny dla zalogowanych], extraction of tree seed oil light skin for 6 months after the still light yellow, while the microwave extraction and ultrasonic extraction darken in a week, a month after the main reason for the dark brown . Comparison of 2.43 kinds of supercritical extraction CO: Extraction of the main fatty acids were oleic acid (relative content of 49.23%) and palmitic acid, linoleic acid was not detected, indicating that it is difficult to linoleic acid extracted, and linoleic acid were significantly lower cholesterol, prevent hardening of the arteries and the role of prevention of coronary heart disease. Ultrasonic and microwave extraction of the oil out of the main fatty acid composition of isolated double bonds of linoleic acid (relative content of 53.18% and 66.81%) and palmitic acid, and oleic acid were not detected, indicating that they are difficult to oil acid extracted. For the first time using supercritical CO: extraction, ultrasonic and microwave assisted extraction of light skin seed oil, extracted by supercritical 9o light skin seed oil is light yellow, save half a year does not change color, but it is difficult to linoleic acid extracted; while taking advantage of ultrasonic and microwave extraction is difficult to extract from oleic acid, so these 3 should be optimized extraction conditions, extraction methods, seed tree, light skin conditions of the extraction process more in-depth study of the extraction rate at the same time concerned about their fatty acid composition must be considered . In order to achieve true development and utilization of the high energy plants for the benefit of mankind. References: [1】 Liang Yang Zhen. Worthwhile to develop the oil plants a tree, light skin [J】. Plant Journal, 1996 (2): l2 a l4. [2] Yan into the training. Light skin is a precious woody tree edible oil resources [J]. Biological and specialty, 1990 (6) :28-3O. [3】 Xing Yoshimitsu, Jiang Chonglin. Light skin tree oil esterification biodiesel pilot experiment [J】. New Energy, 1997,19 (4) :38-4O. [4】 Wangjing Ping, Yuan Liming, Li Jingmin, et al. Light skin odor tree oil and unsaponifiable matter constituents [J】. Chinese Cereals and Oils Association, 1995,10 (2) :48-52. [5】 Li Zhengmao,[link widoczny dla zalogowanych], Deng XH, Li, party training. Character and light skin tree biomass liquid fuel development of ideas [J】. Hunan Forestry Science and Technology, 1996,23 (2): ll-l3. [6] Jin Min, Xia Yuyu. Food Inspection Technology [M]. Beijing: Chemical Industry Press ,2003.562-563. QuaHtyoftheoilsfromSwidawUsoniana'seedsextractedwithdifferentmethodsZENGHong-yah, CAOHui, ZUOYin-ping, LIChang-zhu, JIANGLi-juan (1.TheBiotechnologyResearchInstitute,[link widoczny dla zalogowanych], Xiangtan, Hunan411105, China; 2.HunanAcademyofForestry, Changsha410004, China) Abstract: GC-MSwereapp ~ edtoanalyzethecompoundsoftheoilswhichwereextractedfromSwidawiLw-niana'seedysupercriticalCO2, microwaveandultrasonicmethods. TheresultsindicatedthatlinoleicacidintheoilcouldnotbedetectedbysupercriticalCO2method, butthephysicsandchemistryoftheoilextractedwiththismethodisstable. Oleicacidintheoilcouldnotbeextractedbyultrasonicandmicrowavemethods. Keywords: Swidawilsoniana; SupercriticalCO2; Ultrasonic; Microwave; GC-MS
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