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dlyy8069

铁杆木虫 (小有名气)

[求助] 英文翻译

"用米曲霉发酵产物水解栀子苷,水解产物与味精反应制备栀子蓝色素,大孔树脂DM-2进行精制,通过DPPH•捕获分光光度法测定栀子蓝色素精制前后的抗氧化活性,并与BHT进行比较。结果表明:液栀子蓝制备的条件为栀子苷浓度为3%,米曲霉发酵液为7%,装液量为150mL/500mL,在50℃,160~180 r•min-1下水解6h后加2.1%味精反应时间40h。栀子蓝色素粗品的色价(E1%1cm)达90.56,用DM-2大孔树脂精制,能将产品色价提高98.77%,收率为90.96%, 栀子蓝色素能有效清除DPPH•,具有良好的抗氧化活性,且精制后产品清除DPPH•的能力强于精制前,与对照品BHT相比,低浓度时,清除率低于BHT,随着溶液浓度的增大,清除率逐渐高于BHT。"英文翻译
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