Strain improvement of Lactobacillus delbrueckii using nitrous acid mutation for L-lactic acid production

被引：12

作者：

John, Rojan P. ^{[1
]}

Nampoothiri, K. Madhavan ^{[1
]}

机构：

[1] CSIR, NIIST, Div Biotechnol, Trivandrum 695019, Kerala, India

来源：

WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY | 2008年 / 24卷 / 12期

关键词：

Acid tolerance; Lactic acid production; Lactobacillus delbrueckii; Nitrous acid mutation; Strain improvement;

D O I：

10.1007/s11274-008-9826-z

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：

Insertional mutagenesis is impractical in the mechanisms for protection against low pH, high solute concentration etc. due to the involvement of large number of loci and multiple genes. An attempt was made to improve Lactobacillus delbrueckii NCIM 2025 strain by classical mutation using nitrous acid. In the present investigation, classical mutation was proved to be successful and the selected mutants had improved qualities like increased lactic acid productivity, acid tolerance and sugar tolerance. Mutants showed better growth rate and lesser generation time than the wild type.

引用

页码：3105 / 3109

页数：5

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