Two level half factorial design for the extraction of phenolics, flavonoids and antioxidants recovery from palm kernel by-product

文献类型： 外文期刊

第一作者： Lee, Wei Xiong

作者： Lee, Wei Xiong;Ramanan, Ramakrishnan Nagasundara;Tee, Lee Hong;Prasad, Krishnamurthy Nagendra;Ramanan, Ramakrishnan Nagasundara;Kong, Kin Weng;Galanakis, Charis M.;Sun, Jian

作者机构：

关键词： Antioxidants;Extraction;Flavonoids;Half factorial design;Palm kernel by-product

期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：5.645； 五年影响因子：5.749 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Every year palm oil industry in Malaysia produces enormous quantity of by-products and has great potential to be reutilized as good source of antioxidants. In this study, a two level half factorial design was employed to recover phenolics, flavonoids and antioxidants from palm kernel by-product. The assay included the following independent factors: pH (2-6), ethanol concentration (20-80%), liquid to solid ratio (10-100 mL/g), temperature (30-80 degrees C) and time (30-300 min). Half factorial design was employed to determine the significant contribution of the above factors towards antioxidant capacity (total antioxidant activity, DPPH and FRAP), total phenolic and flavonoid contents. Among, all the factors examined, ethanol concentration and liquid to solid ratio are very significant (p < 0.0001), in obtaining higher antioxidant activity, total phenolic and flavonoid contents. Thus, palm kernel by-product can be proposed to be used as natural antioxidant. (C) 2014 Elsevier B.V. All rights reserved.

分类号： S5

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