薏苡仁油脂的提取及其品质分析  

Extraction and Quality Analysis of Coix Seed Oil

作　　者：陈超 吕都 唐健波[1] 黄珊 李莹 CHEN Chao;LÜDu;TANG Jianbo;HUANG Shan;LI Ying(Institute of Biotechnology,Guizhou Academy of Agricultural Science,Guiyang 550025,China;Guizhou Jinnong Food Technology Co.,Ltd.,Guiyang 550025,China;Guizhou Normal University,Guiyang 550018,China)

机构地区：[1]贵州省农业科学院生物技术研究所,贵州贵阳550025 [2]贵州金农食品科技有限公司,贵州贵阳550025 [3]贵州师范学院,贵州贵阳550018

出　　处：《河南农业科学》2023年第4期162-169,共8页Journal of Henan Agricultural Sciences

基　　金：贵州省省级科技计划项目(黔科合支撑[2022]一般157)。

摘　　要：为获得高品质的薏苡仁油脂,提高薏苡仁油脂的提取率,选择不同的有机溶剂,采用索氏回流提取法提取薏苡仁油脂,并从薏苡仁油脂的感官特性、理化指标、脂肪酸种类及其含量和活性物质含量等方面对其品质进行分析。结果表明,有机溶剂的提取能力为石油醚>环己烷>甲醇>无水乙醇,石油醚和环己烷提取的薏苡仁油脂流动性好,易收集。环己烷提取薏苡仁油脂的酸值为3.66 mg/g、过氧化值为0.014 g/100g、碘值为72.30 g/100g、皂化值为126 mg/g、折光指数为1.449,均低于石油醚提取薏苡仁油脂。环己烷和石油醚提取的薏苡仁油脂脂肪酸组成主要为油酸、亚油酸、棕榈酸和硬脂酸。综合薏苡仁油脂的提取率及其品质指标,薏苡仁油脂的最佳提取有机溶剂为环己烷,提取率高,且薏苡仁油脂的品质好。In order to obtain high‑quality coix seed oil and improve the extraction rate of coix seed oil,different organic solvents were selected to extract coix seed oil by using the soxhlet reflux extraction method.The quality of coix seed oil was analyzed from its sensory characteristics,physical and chemical index,fatty acid type and content,and active material content.The results showed that the extraction capacity of the organic solvent was petroleum ether>cyclohexane>methanol>anhydrous ethanol.Coix seed oil extracted by petroleum ether and cyclohexane had good fluidity and was easier to collect.The acid value of cyclohexane extracted coix seed oil was 3.66 mg/g,peroxide value was 0.014 g/100g,iodine value was 72.30 g/100g,saponification value was 126 mg/g,refractive index was 1.449,which were lower than coix seed oil extracted by petroleum ether.Their fatty acid compositions were mainly oleic acid,linoleic acid,palmic acid and stearic acid.Based on the extraction rate and quality index of coix seed oil,the best extraction organic solvent of coix seed oil is cyclohexane,with high extraction rate,and good quality of coix seed oil.

关 键 词：薏苡仁 油脂 提取 品质 溶剂 

分 类 号：S565.9[农业科学—作物学] TS225.1[轻工技术与工程—粮食、油脂及植物蛋白工程]