Evaluation of quality properties and antioxidant activities of tiger nut (Cyperus esculentus L.) oil produced by mechanical expression or/with critical fluid extraction

文献类型： 外文期刊

第一作者： Guo, Tingting

作者： Guo, Tingting;Wan, Chuyun;Huang, Fenghong;Wei, Chunlei;Guo, Tingting;Wan, Chuyun;Wei, Chunlei;Guo, Tingting;Wan, Chuyun;Huang, Fenghong;Wei, Chunlei

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关键词： Tiger nut oil; Mechanical expression; Subcritical n-butane extraction; Quality properties; Antioxidant activities

期刊名称：LWT-FOOD SCIENCE AND TECHNOLOGY （ 影响因子：4.006； 五年影响因子：4.385 ）

ISSN： 0023-6438

年卷期： 2021 年 141 卷

页码：

收录情况： SCI

摘要： The quality properties and antioxidant activities of tiger nut (Cyperus esculentus L.) oil produced using mechanical expression with subcritical n-butane extraction (ME-SBE) and supercritical CO2 extraction (ME-SCO2E) were investigated and compared with mechanical expression or critical fluid extraction. Results showed that the highest extraction yield was obtained by ME-SBE (28.47 +/- 0.20 g/100 g) and ME-SCO2E (28.56 +/- 0.24 g/100 g). The content of tocopherols, beta-carotene and total phenolic compound in oil extracted by ME-SBE (30.69 +/- 0.15 mg/100 g, 160.56 +/- 7.98 mu g/100 g and 28.79 +/- 0.34 mg sinapic acid/100 g, respectively) were the highest, and followed by ME-SCO2E oil, For fatty acid composition, five oils were similar and rich in oleic acid (73.81-74.10%) and linoleic acid (8.75-8.89%). Furthermore, oil extracted by ME-SBE presented the uppermost antioxidant activities and oxidation stability, which were correlated with alpha-tocopherols, total tocopherols and total phenolic compound content. Thus, mechanical expression with subcritical n-butane extraction appeared to be preferable for tiger nut oil extraction.

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