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马铃薯蛋白的分离及氨基酸组成分析
Isolation and Amino Acid Analysis of Potato Protein

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曾凡逵   刘刚 *  
文摘 为了从马铃薯淀粉加工分离汁水中回收具有天然活性的蛋白,以Amberlite XAD7HP树脂作为吸附剂对扩张床吸附进行研究,并分析回收蛋白的氨基酸组成。结果表明:XAD7HP可以实现Patatin蛋白和蛋白酶抑制剂的分离,分离到的马铃薯蛋白酶抑制剂的胰蛋白酶抑制活力为410 mg/g。回收的马铃薯蛋白酶抑制剂Ser、Leu、Glu的含量分别为13.2、9.14、8.14 g/100 g,且必需氨基酸占总氨基酸的40.80%,疏水氨基酸Ile、Leu、Val、Phe和Tyr的含量也比较高。
其他语种文摘 Bioactive proteins were recovered from a liquid byp roduct containing roughly 1.5% protein, with approximately 50% being protease inhibitors by expanded bed adsorption using macroporous resin Amberlite XAD7HP. The recovered proteins were analyzed for amino acid composition. The results indicated that XAD7HP allowed the separation between protease inhibitors and patatin. The protease inhibitors exhibited an activity of 410 mg/g against trypsin and contained Ser, Leu and Glu at 3.2, 9.14 and 8.14 g/100 g, respectively, with the ratio of essential to total amino acids being 40.80%. Similarly, hydrophobic amino acids, Ile, Leu, Val, Phe and Tyr, were present in relatively higher quantities in these protease inhibitors.
来源 食品科学 ,2014,35(9):53-56 【核心库】
关键词 马铃薯 ; 天然蛋白 ; 蛋白酶抑制剂 ; 氨基酸组成
地址

中国科学院兰州化学物理研究所,环境材料与生态化学研究发展中心, 甘肃, 兰州, 730000

语种 中文
文献类型 研究性论文
ISSN 1002-6630
学科 轻工业、手工业、生活服务业
基金 国家现代农业(马铃薯)产业技术体系建设专项 ;  国家自然科学基金青年科学基金项目
文献收藏号 CSCD:5167878

参考文献 共 25 共2页

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引证文献 3

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2 刘垚彤 马铃薯糖蛋白Patatin的研究进展 食品科学,2019,40(11):331-337
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