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0.56meq/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。
Physiochemical properties, fat-soluble property, crystallization temperature, and oxidation stability of phytoster- ol linolenate obtained by direct esterification without solvent were studied in the paper. The results showed that the phy- tosterol 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 off,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.
出处
《天然产物研究与开发》
CAS
CSCD
北大核心
2012年第3期370-373,388,共5页
Natural Product Research and Development
基金
国家自然科学基金青年基金(31000777)
国家"863"计划(2010AA023003)
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
phytosterol linolenate
physiochemical property
fat-soluble property
crystallization temperature
oxidationstability
