Deacidification of high-acid rice bran oil by the tandem continuous-flow enzymatic reactors

文献类型： 外文期刊

第一作者： Xu, Liujia

作者： Xu, Liujia;Zhang, Yi;Zheng, Mingming;Zivkovic, Vladimir

作者机构：

关键词： Rice bran oil; Enzymatic deacidification; Immobilized lipase; Tandem continuous-flow reactors; Phytosterol esters; Diacylglycerol

期刊名称：FOOD CHEMISTRY （ 影响因子：9.231； 五年影响因子：8.795 ）

ISSN： 0308-8146

年卷期： 2022 年 393 卷

页码：

收录情况： SCI

摘要： Rice bran oil (RBO) contains a variety of nutrients, but the high acid values largely hinder its processing into edible oil. Thus, the tandem continuous-flow reactors are proposed and developed for the enzymatic deacidification of RBO and simultaneous production of functional oils. The results indicate that the Candida antarctica lipase B (CALB) immobilized on the hydrophobic ordered mesoporous silicon (OMS-C-18) increased 6.6 times of the catalytic activity and improved at least 20 C-o of temperature tolerance compared to the commercial Novozym 435. The tandem continuous-flow enzymatic reactors removed 91.4% of free fatty acid and increased 9 and 12 times of phytosterol ester and diacylglycerol in RBO, respectively. Moreover, the retention rate of gamma-oryzanol was at least 40% higher than that obtained by traditional alkali refining. This study provides an effective and sustainable method to continuously convert the low-value RBO into value-added products, which brings huge potential to cleaner industrial production.

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