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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/18875

    Title: In vitro antioxidant activity of liquor and semi-purified fractions from fermented squid pen biowaste by Serratia ureilytica TKU013
    Authors: Wang, San-lang;Liu, Kao-cheng;Liang, Tzu-wen;Kuo, Yao-haur;Wang, Chen-yu
    Contributors: 淡江大學生命科學研究所
    Keywords: Serratia ureilytica;Antioxidant activity;Squid pen wastes;DPPH;Chelating ability;Reducing power;Phenolic content
    Date: 2010-04
    Issue Date: 2009-09-22 15:29:50 (UTC+8)
    Publisher: Amsterdam: Elsevier B.V.
    Abstract: Antioxidative activities were found in the culture supernatant of Serratia ureilytica TKU013 with squid pen as the sole carbon/nitrogen source. The 4th day supernatant showed the strongest antioxidant activities and the highest total phenolic content. The supernatant was further purified by liquid–liquid partition, and it was found that the ethyl acetate-soluble (EA) extract exhibited the strongest antioxidant activity in a DPPH radical-scavenging assay and this was compared with the positive control, α-tocopherol. This extract was further divided into eight fractions, designated as F1–F8, by silica gel liquid chromatography. In most cases, F4 and F8 were found to possess the strongest antioxidative activities. Significant associations between the antioxidant potency and the total phenolic content, as well as between the antioxidant potency and free amino groups, were found for the supernatant, extract, and fractions. With this method, squid pen waste can be utilized and has potential in the production of functional foods.
    Relation: Food Chemistry 119(4), pp.1380-1385
    DOI: 10.1016/j.foodchem.2009.09.017
    Appears in Collections:[Graduate Institue of Life Sciences] Journal Article

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