Co-production of ice nuclei and xanthan gum by transformed Xanthomonas campestris grown in sugar beet molasses.

Autor:	Afendra, Amalia S., Yiannaki, Efthalia E., Palaiomylitou, Maria A., Kyriakidis, Dimitrios A., Drainas, Constantin
Předmět:	PLASMIDS CYTOPLASMIC inheritance GENETIC vectors XANTHAN gum MICROBIAL polysaccharides STABILIZING agents
Zdroj:	Biotechnology Letters; Apr2002, Vol. 24 Issue 7, p579-583, 5p
Abstrakt:	Two recombinant plasmids, expressing ice nucleation activity, were constructed and named pCPP30inaZ and pCPP38inaZ. They were transferred to the ice-negative, xanthan-producing Xanthomonas campestris pv. campestris by electroporation. The transformants were used for co-production of xanthan gum and ice nuclei from sugar beet molasses. The highest values obtained were 20 g l-1 and 1018 ice nuclei ml-1, respectively. The above values fulfil the criteria for industrial manipulation. This is the first report on co-formation of two products by a transformed X. campestris strain. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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