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Phenolic composition and antioxidant activity of Thai and Eri silk sericins

机译：泰国和Eri丝胶的酚类成分和抗氧化活性

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摘要

The present study investigates the phenolic contents and antioxidant activities of silk sericin extracted (SSE) from Thai mulberry silkworms (Bombyx mori) and non-mulberry silkworm (Samia ricini). The SSE from all strains revealed the mainly presence of flavonoid compounds including (+)-catechin (20.63–145.64 mg/100 g), quercetin (7.89–35.95 mg/100 g), and (−)-epicatechin (3.36–44.19 mg/100 g). The antioxidant activity of the SSE with water from Chokumnoui 1 was found to have low EC50 values (0.96 mg/mL), the concentrations of the SSE that exhibit 50% reduction in DPPH, and highest scavenging of ABTS· + radicals (1.73 mg TEAC/g) and highest reduce TPRZ-Fe (III) complex to TPTZ-Fe (II) (8.03 mg Fe(II)/g), thus indicating high antioxidant activities. Total phenolic content and total flavonoid content of the SSE showed positive correlated to the scavenging activity of DPPH and ABTS· + radicals and the ferric reducing ability (FRAP assay).
机译：本研究调查了泰国桑蚕（Bombyx mori）和非桑蚕（Samia ricini）蚕丝丝胶提取物（SSE）的酚含量和抗氧化活性。所有菌株的SSE均显示出主要存在类黄酮化合物，包括（+）-儿茶素（20.63-145.64 mg / 100 g），槲皮素（7.89-35.95 mg / 100 g）和（-）-表儿茶素（3.36-44.19 mg /100克）。发现来自Chokumnoui 1的水对SSE的抗氧化活性具有低EC50值（0.96 mg / mL），DPPH降低50％的SSE浓度和对ABTS·+ 自由基的最高清除（1.73 mg TEAC / g）和最高还原性TPRZ-Fe（III）络合物对TPTZ-Fe（II）（8.03 mg Fe（II）/ g），因此表明其高抗氧化活性。 SSE的总酚含量和总黄酮含量与DPPH和ABTS +自由基的清除活性以及三价铁还原能力呈正相关。

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  • 来源
    《Food Science and Biotechnology》 |2012年第2期|p.389-398|共10页
  • 作者

    Luchai Butkhup; Montree Jeenphakdee; Sujitar Jorjong; Supachai Samappito; Wannee Samappito; Jirapa Butimal;

  • 作者单位

    Department of Biotechnology, Faculty of Technology, Mahasarakham University, Mahasarakham, 44000, Thailand;

    Department of Biotechnology, Faculty of Technology, Mahasarakham University, Mahasarakham, 44000, Thailand;

    Department of Biotechnology, Faculty of Technology, Mahasarakham University, Mahasarakham, 44000, Thailand;

    Department of Biotechnology, Faculty of Technology, Mahasarakham University, Mahasarakham, 44000, Thailand;

    Department of Food Technology, Faculty of Technology, Mahasarakham University, Mahasarakham, 44000, Thailand;

    Silk Innovation Center, Division of Research Supporting and Extension Services, Mahasarakham University, Mahasarakham, 44000, Thailand;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Bombyx mori; Samia ricini; silk cocoon; phenolic compound; antioxidant activity;

    机译：家蚕;水曲柳;蚕茧;酚类化合物;抗氧化活性;

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