MUTAGENESIS OF XANTHOMONAS CAMPESTRIS AND SELECTION OF STRAINS WITH ENHANCED XANTHAN PRODUCTION

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MEHRGAN H.; MAZAHERI ASADI MAHNAZ; MORTAZAVI SEYED ALI REZA

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Journal: Iranian Biomedical Journal Year:2003 | Volume:7 | Issue:3 Page(s): 91-98

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Title

MUTAGENESIS OF XANTHOMONAS CAMPESTRIS AND SELECTION OF STRAINS WITH ENHANCED XANTHAN PRODUCTION

Author(s)

MEHRGAN H. | MAZAHERI ASADI MAHNAZ | MORTAZAVI SEYED ALI REZA | Issue Writer Certificate

Keywords

XANTHAN

XANTHOMONAS CAMPESTRIS

MUTATION

XANTHOMONADIN

Abstract

XANTHAN gum is a microbial polysaccharide of great commercial importance as it has ‎unusual rheological properties in solution and consequent range of applications. In ‎this study, a series of mutants were isolated from XANTHOMONAS CAMPESTRIS PTCC ‎‎1473 by ethyl methanesulfonate mutagenesis. The polysaccharide yield of one mutant, ‎XC1473E2, was 30% better than that of the parent strain. It also showed higher ‎XANTHAN formation and glucose consumption rates compared to the parent strain. ‎XANTHAN produced by the mutant had enhanced viscosity, higher pseudoplasticity and ‎larger molecular weight. Since mutant XC1473E2 appeared white on agar plates, it ‎underwent pigment extraction with methanol. Contrary to the Parent strain, the mutant showed no absorption at 443nm, i.e. the wavelength related ‎to yellow pigment. This finding suggested that yellow pigmentation and normal ‎XANTHAN biosynthesis are not necessarily concurrent. In general, mutant XC1473E2 ‎seems to be a strain with interesting characteristics for use in commercial production ‎of XANTHAN‏.‏

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APA: Copy

MEHRGAN, H., MAZAHERI ASADI, MAHNAZ, & MORTAZAVI, SEYED ALI REZA. (2003). MUTAGENESIS OF XANTHOMONAS CAMPESTRIS AND SELECTION OF STRAINS WITH ENHANCED XANTHAN PRODUCTION. IRANIAN BIOMEDICAL JOURNAL, 7(3), 91-98. SID. https://sid.ir/paper/276959/en

Vancouver: Copy

MEHRGAN H., MAZAHERI ASADI MAHNAZ, MORTAZAVI SEYED ALI REZA. MUTAGENESIS OF XANTHOMONAS CAMPESTRIS AND SELECTION OF STRAINS WITH ENHANCED XANTHAN PRODUCTION. IRANIAN BIOMEDICAL JOURNAL[Internet]. 2003;7(3):91-98. Available from: https://sid.ir/paper/276959/en

IEEE: Copy

H. MEHRGAN, MAHNAZ MAZAHERI ASADI, and SEYED ALI REZA MORTAZAVI, “MUTAGENESIS OF XANTHOMONAS CAMPESTRIS AND SELECTION OF STRAINS WITH ENHANCED XANTHAN PRODUCTION,” IRANIAN BIOMEDICAL JOURNAL, vol. 7, no. 3, pp. 91–98, 2003, [Online]. Available: https://sid.ir/paper/276959/en

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