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METHOD OF EXTRACELLULAR INULINASE PREPARING
METHOD OF EXTRACELLULAR INULINASE PREPARING
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机译:胞外核酸酶的制备方法
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摘要
FIELD: biotechnology, biochemistry, enzymes. SUBSTANCE: invention relates to preparing an extracellular inulinase used in food industry, medicine and in production of dietetic foodstuffs. Method of preparing an extracellular inulinase involves culturing Bacillus polymyxa VKMV-722 as a strain-producer of inulinase in nutrient medium containing molasses as a source of carbon and vitamins taken in the amount 8-10 wt.%, ammonium hydrophosphate as a source of nitrogen and phosphors taken in the amount 0.5-1.0 wt.%, pH value of medium is 7.0. Invention provides the increase of inulinase activity from 21 U/cm3 to 67.0-76.2 U/cm3 of cultural fluid as compared with the known one. EFFECT: increased activity of inulinase, decreased cost of enzyme.
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机译:领域:生物技术,生物化学,酶。物质本发明涉及制备用于食品工业,医学和饮食食品的细胞外菊粉酶。制备细胞外菊粉酶的方法包括在营养培养基中培养多粘芽孢杆菌VKMV-722作为菊粉酶的菌株生产者,所述营养培养基含有糖蜜作为碳源,维生素B2的量为8-10重量%,磷酸氢铵为氮源。荧光粉的用量为0.5-1.0重量%,介质的pH值为7.0。与已知的相比,本发明提供了菊粉酶活性从21U / cm 3 Sup>增加到67.0-76.2U / cm 3 Sup>。效果:菊粉酶活性增加,酶成本降低。
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