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author:

谢喜珍 (谢喜珍.) [1] | 林娟 (林娟.) [2] | 谢勇 (谢勇.) [3] | 叶秀云 (叶秀云.) [4]

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PKU CSCD

Abstract:

采用Vibiro sp.ZC-1发酵制备琼胶酶,粗酶液经过中空纤维柱浓缩、硫酸铵沉淀、DEAE-阴离子交换层析,得到一个电泳纯的琼胶酶组分Aga ZC-1,其分子质量约为45k Da,比活力为114.613U/mg。对Aga ZC-1进行酶学性质分析,结果表明,其最适反应p H为7.0,在p H为5.0~9.0时保温1h仍能保持80%以上的酶活力;最适反应温度为50℃,在45℃条件下保温1h酶活力保持在60%以上。在高浓度(5mmol/L)下,Fe~(3+)、Cu~(2+)、Sn~(2+)和Zn~(2+)能完全抑制琼胶酶的活性,在低浓度(1mmol/L)下,Cu~(2+)、Ba~(2+)、Na...

Keyword:

Vibiro sp. 分离纯化 琼胶酶 酶学性质

Community:

  • [ 1 ] 福州大学福建省海洋酶工程重点实验室

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Source :

中国生物工程杂志

Year: 2017

Issue: 01

Volume: 37

Page: 46-52

Cited Count:

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SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

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Chinese Cited Count:

30 Days PV: 0

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