文献类型： 外文期刊
作者： Li, Daoming 1 ; Zhang, Jiahao 1 ; Faiza, Muniba 2 ; Shi, Longhua 1 ; Wang, Weifei 3 ; Liu, Ning 1 ; Wang, Yonghua 4 ;
作者机构： 1.Shaanxi Univ Sci & Technol, Sch Food & Biol Engn, Xian 710021, Peoples R China
2.Jamia Millia Islamia, Dept Biotechnol, New Delhi 110025, India
3.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Guangzhou 510610, Peoples R China
4.South China Univ Technol, Sch Food Sci & Engn, Guangzhou 510640, Peoples R China
关键词： Rice bran; Rice bran oil; Moderate biorefining; Improved enzymatic degumming; Enzymatic deacidification
期刊名称：LWT-FOOD SCIENCE AND TECHNOLOGY （ 影响因子：4.952； 五年影响因子：5.383 ）
ISSN： 0023-6438
年卷期： 2021 年 151 卷
页码：
收录情况： SCI
摘要： Edible grade rice bran oil (RBO) rich in gamma-oryzanol and phytosterol but without glycidyl esters (GEs) and monochloropropanediol esters (MCPDEs) was obtained from rice bran by moderate biorefining. High-acid RBO (acid value of 51.22 mg KOH/g) was firstly extracted from rice bran and was then moderately biorefined by combining improved enzymatic degumming, dewaxing, enzymatic deacidification, bleaching, and lowtemperature purification (120 degrees C). Through monitoring the refining process, results showed that the improved enzymatic degumming by combining partial glyceride lipase SMG1-F278N and phospholipase A1 enabled the phosphorus content to quickly decrease to 4.56 mg/kg after optimization by response surface methodology. After biorefining, the final RBO with the acid and peroxide value of 0.10 mg KOH/g and 2.05 mmol/kg reached the grade-one standard of edible oil. Additionally, the final RBO contained 20.66 mg/kg gamma-oryzanol and 20.63 mg/kg phytosterol with the retention rate of 71.67% and 59.2% but with undetectable GEs and MCPDEs. The environmental friendliness of the novel moderate biorefining process and superior product quality of the final product point toward a promising viable process for RBO refining in the further.
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