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  • 1
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Xanthomonas campestris pv. translucens IFO13599 could produce xanthan gum (18.5 mg/100 mg, lactose) with lactose as the growth substrate in spite of a low level of β-galactosidase. This productivity corresponded to one-fifth that with glucose. This strain could also produce ice-nucleating material having an ice-nucleating temperature, T 50, of −2.8 °C with xanthan gum in the culture broth. We found that this strain produced both materials in whey medium from which the insoluble components had been removed. The production of xanthan with ice-nucleating material reached a maximum after cultivation for 168 h under optimum conditions. Furthermore, the xanthan obtained had a low viscosity because of its variant structure revealed, by TLC and HPLC analyses, to be lacking pyruvic acid. Furthermore, we concluded that this mixture had considerable potential as a regeneratic agent, when compared to other regeneratic agents such as carboxymethylcellulose.
    Type of Medium: Electronic Resource
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