Glukhova E V, Shenderov B A, Iarotskiĭ S V
Antibiot Med Biotekhnol. 1985 Jul;30(7):490-5.
The effect of the carbohydrate source in the cultivation medium on the intensity of the synthesis of exopolysaccharides of two variants of Bacillus polymyxa was studied. No significant effect of the nature of the carbohydrate source on accumulation of the culture biomass was observed, while the fermentation broth viscosity, the yield of the extracellular polysaccharides and their monosaccharide composition, as well as the ratio of the neutral and acid components significantly changed. Differences in the composition and properties of the exopolysaccharides produced in the cultures of the variant strain under identical conditions were noted. Certain correlation between the exoproduct yield and the quantity of the accumulated biomass, as well as between the composition of the exopolysaccharides and viscosity of the fermentation broth was shown, which ensures a goal-oriented effect on the synthesis of the exopolysaccharide complex by variation of the medium composition.
研究了培养基中碳水化合物来源对多粘芽孢杆菌两个变体胞外多糖合成强度的影响。未观察到碳水化合物来源的性质对培养物生物量积累有显著影响，而发酵液粘度、胞外多糖产量及其单糖组成，以及中性和酸性成分的比例均发生了显著变化。注意到在相同条件下变体菌株培养物中产生的胞外多糖在组成和性质上存在差异。结果表明，胞外产物产量与积累的生物量数量之间，以及胞外多糖组成与发酵液粘度之间存在一定的相关性，这通过改变培养基组成确保了对胞外多糖复合物合成的定向影响。
