Article
Isolation of a Xanthomonas campestris strain with elevated beta-galactosidase activity for direct use of lactose in xanthan gum production.
Letters in applied microbiology - 1 Jan 2002
Yang T-C, Wu G-H, Tseng Y-H
Abstract excerpt
AIMS: To isolate a Xanthomonas campestris strain that can use lactose directly for xanthan gum production. METHODS AND RESULTS: The presence of indigenous beta-galactosidase gene in the wild-type Xc17 was detected by PCR and Southern hybridization. Treatment of Xc17 with nitrous acid resulted in the isolation of Xc17L with a 3.5-fold elevation of beta-galactosidase activity capable of growing in lactose-based...
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