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食品研究与开发:2017,38(11):44-47
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西兰花多肽的提取及其抗氧化活性分析
徐俊杰1,赵伟2,朱文赫1,裴亚萍3,吕士杰1,*
(1. 吉林医药学院 基础医学院,吉林 吉林 132013;2. 中国医科大学 小儿外科,辽宁 沈阳 110001; 3. 吉林医药学院 临床医学院,吉林 吉林 132013)
Extraction and Antioxidant Activity Analysis of Broccoli Polypeptide
XU Jun-jie1, ZHAO Wei2, ZHU Wen-he1, PEI Ya-ping3, Lü Shi-jie1,*
(1. School of Basic Medical Science, Jilin Medical University, Jilin 132013, Jilin, China; 2. Department of Pediatric Surgery, China Medical University, Shenyang 110001, Liaoning, China; 3. School of Clinical Medicine, Jilin Medical University, Jilin 132013, Jilin, China)
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投稿时间:2016-08-30    
中文摘要: 采用丙酮沉淀法提取西兰花花蕾粗多肽,并利用凝胶过滤层析对提取物进行分离纯化,制备西兰花多肽组 分;采用超氧阴离子、DPPH 自由基的清除及还原力测定实验研究多肽组分的抗氧化活性。结果表明:利用丙酮沉淀 法、凝胶过滤层析等方法可分离获得 3 个组分,其中组分 II 在 0.01 mg/mL 和 0.1 mg/mL 浓度时,其超氧阴离子自由基 清除率分别为 23.38 %、45.19 %,高于同浓度维生素 C;还原力分别为同浓度维生素 C 的 1.37 倍和 1.6 倍,表现出了 良好的抗氧化活性,为进一步开展活性研究及西兰花多肽功能产品开发提供了参考。
中文关键词: 西兰花  多肽  丙酮沉淀  抗氧化活性
Abstract:To prepare broccoli peptide fractions, acetone precipitation was used to extract the crude peptides from the flower buds, and gel filtration chromatography was then used to purify the peptides. Three methods in- cluding superoxide anion free radical and 1, 1-diphenyl-2-picrylhydrazyl radical scavenging assays, ferric re- ducing power were performed to detect the antioxidant activity. The results showed that three peptides fractions could be separated by acetone precipitation and gel filtration chromatography. At the concentration of 0.01 mg/mL and 0.1 mg/mL, the scavenging rate of fraction Ⅱ to superoxide anion free radical were 23.38 % and 45.19 % which higher than Vc of the same concentration, and the ferric reducing power were 1.37 and 1.6 times of VC,respectively. The fraction II presented good antioxidant activity, which lay a foundation for the further research on activity and broccoli peptide product development.
文章编号:201711010     中图分类号:    文献标志码:A
基金项目:吉林省科技厅资助项目(20130412002XH);吉林省教育厅资助项目(吉教科合字[2014]370 号)
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