α-亚麻酸甾醇酯的理化特性及氧化稳定性研究

doi:A

天然产物研究与开发 ›› 2012, Vol. 23 ›› Issue (3): 370-373.doi: A

α-亚麻酸甾醇酯的理化特性及氧化稳定性研究

邓乾春，黄凤洪*，黄庆德，张品，李江涛

中国农业科学院油料作物研究所，武汉 430062

收稿日期:2010-10-21 出版日期:2012-03-26 发布日期:2012-03-31
基金资助:
国家自然科学基金青年基金（31000777），国家“863”计划（2010AA023003）

Physiochemical Properties and Oxidation Stability of Phytosterol α-Linolenate

DENG Qian-chun, HUANG Feng-hong*, HUANG Qing-de, ZHANG Pin, LI Jiang-tao

Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China

Received:2010-10-21 Online:2012-03-26 Published:2012-03-31

摘要/Abstract

摘要： 本文研究了采用无溶剂直接酯化法合成得到的α-亚麻酸甾醇酯的理化特性、脂溶性、结晶特性、油脂氧化稳定性。结果表明，α-亚麻酸甾醇酯具有理想的理化特性，酸价和过氧化值分别为1.2 mg KOH/g和0.56 meq/kg，反式脂肪酸含量小于0.1%，在不同植物油脂中的溶解性达到30%以上，结晶温度区间在-25.9℃-29.6℃之间。α-亚麻酸甾醇酯在大豆油、油菜籽油和亚麻籽油中的浓度分别小于0.1%、0.1%和0.3%，油脂的氧化诱导时间随浓度增加而增加。因此α-亚麻酸甾醇酯良好的理化特性表明其在不同形态食品、保健品和医药产品等中将具有较广的应用范围，是一种具有较高营养价值的功能性食品添加剂。

关键词: α-亚麻酸甾醇酯, 理化特性, 脂溶性, 结晶特性, 氧化稳定性

Abstract: Physiochemical properties, fat-soluble property, crystallization temperature, and oxidation stability of phytosterol linolenate obtained by direct esterification without solvent were studied in the paper. The results showed that the phytosterol linolenate possessed ideal physiochemical properties. The acid value and POV of phytosterol linolenate were 1.2 mg KOH/g and 0.56 meq/kg, respectively, the trans fatty acids content was less than 0.1%, the solubility in different plant oils was about 30%, and crystallization temperature was –27.7 ℃. The concentration of phytosterol linolenate in soybean oil, rapeseed oil, and flaxseed oil was less than 0.1%, 0.1% and 0.3%, respectively. The oxidation induction time of the oil increased with the increase of phytosterol linolenate concentration in the oil. Phytosterol linolenate could be applied to different forms of food, health products and pharmaceutical products as a functional food additive.

Key words: phytosterol linolenate, physiochemical property, fat-soluble property, crystallization temperature, oxidation stability

中图分类号:

R284.3

邓乾春，黄凤洪，黄庆德，张品，李江涛. α-亚麻酸甾醇酯的理化特性及氧化稳定性研究[J]. 天然产物研究与开发, 2012, 23(3): 370-373.

DENG Qian-chun, HUANG Feng-hong, HUANG Qing-de, ZHANG Pin, LI Jiang-tao. Physiochemical Properties and Oxidation Stability of Phytosterol α-Linolenate[J]. NATURAL PRODUCT RESEARCH AND DEVELOPMENT, 2012, 23(3): 370-373.

参考文献

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α-亚麻酸甾醇酯的理化特性及氧化稳定性研究

Physiochemical Properties and Oxidation Stability of Phytosterol α-Linolenate

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