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author:

赵珺 (赵珺.) [1] | 汪少芸 (汪少芸.) [2] | 李晓坤 (李晓坤.) [3]

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PKU CSCD

Abstract:

利用热水抽提法提取鲨鱼皮明胶,控制酶法水解条件制备天然抗冻多肽.以细菌低温保护活性为指标,筛选蛋白水解酶种类及酶解时间,利用Sephadex G-50凝胶过滤色谱、SP-Sephadex C-25强阳离子交换色谱等分离手段进行分离,得到细菌低温保护高活性组分.结果表明,酶解鲨鱼皮明胶得到高活性抗冻多肽的最适蛋白水解酶为酸性蛋白酶,酶解温度50℃、pH 3.0、酶/底物3 000 U·g-1、底物浓度3%、酶解时间1 h;经过Sephadex G-50凝胶过滤色谱、SP-Sephadex C-25强阳离子交换色谱等分离手段得到阳离子的P2组分,经过细菌低温保护测试,当浓度为500μg·mL-1时...

Keyword:

低温保护 分离 抗冻多肽

Community:

  • [ 1 ] 福州大学生物科学与工程学院

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Source :

福州大学学报(自然科学版)

ISSN: 1000-2243

CN: 35-1337/N

Year: 2013

Issue: 01

Volume: 41

Page: 121-126

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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