小米糠中亚油酸的提取工艺研究
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摘要
本论文使用正己烷作溶剂,对AV值为35.36 mgKOH/g的小米糠浸出提取小米糠油,采用尿素包合的方法纯化小米糠油中亚油酸,通过响应面法分析并优化出最佳工艺条件:尿素与脂肪酸比值(g/g)为5∶1、包合温度为-8.44℃、包合时间为20.82 h,亚油酸得率为76.56%。
the AV value of 35.36 mgKOH/g millet bran was selected as raw material,extracting with hexane for millet branl oil,study the conditions on purification of linoleic acid in millet bran oil with urea adduction fractionation by response surface methodology(RSM),the results showed that the optimal extraction conditions were as follows:urea/mixed fatty acid(g/g)ratio is 5∶1,adduction temperature and time are-8.44 ℃ and 20.82 h,the yield of linoleic acid is76.56%.
the AV value of 35.36 mgKOH/g millet bran was selected as raw material,extracting with hexane for millet branl oil,study the conditions on purification of linoleic acid in millet bran oil with urea adduction fractionation by response surface methodology(RSM),the results showed that the optimal extraction conditions were as follows:urea/mixed fatty acid(g/g)ratio is 5∶1,adduction temperature and time are-8.44 ℃ and 20.82 h,the yield of linoleic acid is76.56%.
引文
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[3]Chandrasekara A,Shahidi F.Millet grain phenolics and their role in disease risk reduction and health promotion:A review[J].Jounal of Functional Foods,2013,5:570-581.
[4]Ahmed S M,Zhang Qing,Chen Jing,et al.Millet grains:Nutritional quality,processing,and potential health benefits[J].Comprehensive Reviews in Food Science and Food Safety,2013,12:281-295.
[5]原敏,王常青,于书佳,等.小米谷糠油活性成分及其对酪氨酸酶的抑制作用[J].中国油脂,2013,38(10):31-34.
[6]赵陈勇,王常青,许洁,等.小米谷糠油降血脂和抗氧化作用的研究[J].中国粮油学报,2012,27(7):67-70.
[7]原敏,王常青,连伟帅,等.小米谷糠油对光老化皮肤的保护作用[J].天然产物研究与开发,2013(25):1572-1575.
[8]孙瑞贞,马丽,赵振午,等.尿素包合纯化小米糠油中亚油酸方法的研究[J].食品科技,2013,38(4):252-255.
[9]郑晓吉,罗鹏,陈计峦,等.尿素络合法纯棉籽油中亚油酸的研究[J].食品研究与开发,2010,31(5):51-53.
[10]曾哲灵,徐春涛,熊涛.尿素包合法分离纯化葵花籽油中亚油酸[J].南昌大学学报:理科版,2007,31(3):287-289.
[11]李开雄,刘秋云,李宝昆,等.尿素包合法富集红花油中亚油酸的工艺优化[J].食品工业,2010(7):74-77.
[12]刘晓华,曹郁生,陈燕,等.尿素包合法纯化玉米油中亚油酸的研究[J].中国油脂,2004,29(2):40-42.