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碱性蛋白酶制备水牛乳抗氧化活性肽酶解条件的优化 被引量:7

Optimizing enzymolysis conditions of antioxidant activity buffalo milk peptide with alkaline protease
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摘要 采用碱性蛋白酶,以水解度以及DPPH自由基清除率为评价指标,通过单因素以及正交实验优化水牛乳蛋白的酶解工艺,确定碱性蛋白酶制备水牛乳抗氧化活性肽的最佳酶解工艺为:底物质量分数5%,加酶量10 000 U/g,酶解pH值为10.5,酶解时间2.5 h,温度为60℃;此时,酶解物水解度达30.46%±0.15%,DPPH自由基清除率达69.13%±1.22%。 The buffalo milk peptide was prepared with alkaline protease, enzymolysis conditions was optimized by single-factor and orthogonal tests, which were evaluated by the hydrolysis degree and DPPH scavenging rate ,the result shows that : the optimun conditions are: concentration of substrate 5%, enzyme addition 10 000 U/g substrate, enzymolysis pill0.5, enzymolysis time 2.5 h, enzymolysis temperature 60℃, In this process,the hydrolysis degree and DPPH scavenging rate reach 30.46%±0.15% and 69.13%±1 .22%.
出处 《中国乳品工业》 CAS 北大核心 2011年第12期12-14,19,共4页 China Dairy Industry
基金 水牛基(1007007)
关键词 碱性蛋白酶 水牛乳 抗氧化活性 多肽 酶解条件 alkaline protease buffalo milk antioxidative activitv peptide: enzvmolvsis conditions
作者简介 李玲(1984-),女,硕士,研究方向为食品科学与技术。 通讯作者:曾庆坤
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参考文献6

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共引文献46

同被引文献56

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