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海洋科学  2007 

一株海洋几丁质酶产生菌的筛选及其产酶条件的初步研究

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Keywords: 海洋细菌,假交替单胞菌(Pseudoaltermonas),几丁质酶,培养条件

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Abstract:

从胶州湾的海泥中分离到一株几丁质酶高产菌株。经16SrDNA序列分析,认为该菌属于假交替单胞菌(Pseudoaltermonas),并将其命名为SS01。对该菌产几丁质酶的最佳培养条件进行了研究,发现与其它几丁质酶产生菌相比,SS01菌株的最适产酶温度较低,酶活较高。在Zobell2216E培养基中,SS01菌株培养9h进入稳定期。胶体几丁质可诱导该菌几丁质酶的产生。在几丁质培养基中,SS01菌株产酶的适宜条件是:培养温度24℃,培养基起始pH7.0左右,蛋白胨为N源(5g/L),胶体几丁质为C源(5g/L),170r/min振荡培养130h,酶活可达116.2U/mL。

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