PROTEINASE PRODUCTION BY HALOPHILIC ISOLATES FROM MARINE-SEDIMENTS

被引：4
作者：
MANACHINI, PL
FORTINA, MG
机构：
[1] Dipartimento di Scienze E Tecnologie Alimentari E Microbiologiche-Sezione di Microbiologia Industriale, Università Degli Studi di Milano, Milano
来源：
FOLIA MICROBIOLOGICA | 1994年 / 39卷 / 05期
关键词：
D O I：
10.1007/BF02814442
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Twenty-one strains of spore-forming bacteria were isolated from marine sediments of the Tyrrhenian seaboard (Livorno, Italy) and identified as Bacillus licheniformis by their morphological, physiological and biochemical characteristics. All strains were able to grow at 15% NaCl and on media prepared with 100% seawater. In these conditions 75% of the strains were able to produce a bacitracin-like antibiotic and 100% of the strains showed proteolytic activity. Particularly, all strains showed proteinase production with an activity optimum at pH 85 and 60 degrees C. Three strains produced high levels of proteolytic activity only when cultured in the presence of seawater.
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收藏
页码：378 / 380
页数：3
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