乙醇对油茶籽油水相提取的影响
Influence of ethanol on aqueous extraction of oil-tea camellia seed oil
油茶籽水相萃取时往往会产生一定量的乳状液，对这些乳状液进行有效破乳是提高油茶籽水代法、水酶法清油得率的关键。研究了在提取过程中采用乙醇进行破乳的方法，考察了乙醇对水代法和水酶法清油得率、过氧化值、酸值、茶皂素提取的影响。结果表明，乙醇有很强的破乳能力，能大大减少乳状液的生成量，使水代法、水酶法清油得率分别从84.23%和86.11%提高到90.88%和93.10%；乙醇不会对油茶籽油的过氧化值、酸值造成显著影响，乙醇辅助水相提取方法可行，操作安全，具备工业化应用潜力。
Emulsion could be formed during aqueous extraction of oil-tea camellia seed oil. Ethanol was introduced into the system to break the emulsion and the effects of ethanol on the free oil yield, peroxide value and acid value of the oil, and the following extractability of tea saponin were investigated. Ethanol showed remarkable demulsifying ability and the emulsion formed in the aqueous extraction and aqueous enzymatic extraction were greatly reduced. The free oil yields of aqueous extraction and aqueous enzymatic extraction were improved from 85.23% and 88.11% to 90.88% and 93.10%, respectively. Ethanol showed slight effects on the peroxide value and acid value of camellia seed oil. The ethanol-assisted aqueous extraction method is feasible, operational safe and can be a potential method for industrial application.
赵伟、杨瑞金、张文斌、李强、华霄、朱凯艳
农业科学技术发展植物学油脂化学工业
食品科学油茶籽油乙醇破乳水代法水酶法
food scienceoil-tea camellia seed oilethanoldemulsificationaqueous extractionaqueous enzymatic extraction
赵伟,杨瑞金,张文斌,李强,华霄,朱凯艳.乙醇对油茶籽油水相提取的影响[EB/OL].(2012-02-15)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/201202-460.点此复制
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