一种再生蚕丝蛋白多肽及其制备和应用
申请公布号:CN104987373A
申请号:CN201510449668.9
申请日期:2015.07.28
申请公布日期:2015.10.21
发明人:罗瑞雪
分类号:C07K14/435(2006.01)I;C12P21/06(2006.01)I;A61K8/64(2006.01)I;A61Q19/00(2006.01)I;A61Q17/04(2006.01)I
主分类号:C07K14/435(2006.01)I
地址:215000 江苏省苏州市高新区锦峰路8号15号楼
摘要:本发明公开一种再生蚕丝蛋白多肽,涉及生物技术多肽制备领域。其序列为LVDDTDRSIGILSGSCAAANV。制备步骤包括(1)将蚕丝废料500g剪碎后,按照质量/体积=1:1-3加入碳酸氢钠溶液,混匀;(2)将含蚕丝废料的碳酸氢钠溶液在-70-80℃速冻;(3)采用冷冻高速组织匀浆器,将凝固混合物匀浆;(4)匀浆后,煮沸1-2小时;(5)趁热,过滤,取上清;(6)待上清冷却后,调pH值至pH6.0-6.5;(7)离心10000-15000rpm,30-60分钟,得到沉淀物;(8)将沉淀物复溶于pH4.5-5.0缓冲液中,采用固定化酶技术,分解得到分子量为2400-3600Da的多肽。所述的再生蚕丝蛋白多肽,在制备化妆品中的应用。本发明制备的再生蚕丝蛋白多肽,纯度大于60%。该多肽具有保湿和防晒的作用,作用与天然蚕丝蛋白相比,效果更好,且原料成本低。
主权项:一种再生蚕丝蛋白多肽,其特征在于,序列为LVDDTDRSIGILSGSCAAANV。
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