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  • Title: Fermentative production of L: -(+)-lactic acid by an alkaliphilic marine microorganism.
    Author: Calabia BP, Tokiwa Y, Aiba S.
    Journal: Biotechnol Lett; 2011 Jul; 33(7):1429-33. PubMed ID: 21369906.
    Abstract:
    Of six strains of lactic acid-producing alkaliphilic microorganisms, Halolactibacillus halophilus was most efficient. It produced the highest concentration and yield of lactic acid, with minimal amounts of acetic and formic acid when sucrose and glucose were used as substrate. Mannose and xylose were poorly utilized. In batch fermentation at 30°C, pH 9 with 4 and 8% (w/v) sucrose, lactic acid was produced at 37.7 and 65.8 g l(-1), with yields of 95 and 83%, respectively. Likewise, when 4 and 8% (w/v) glucose were used, 33.4 and 59.6 g lactic acid l(-1) were produced with 85 and 76% yields, respectively. L: -(+)-lactic acid had an optical purity of 98.8% (from sucrose) and 98.3% (from glucose).
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