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Energy Utilization for Polysaccharide Synthesis by Mixed Rumen Organisms Fermenting Soluble Carbohydrates

机译：混合瘤胃生物发酵可溶性碳水化合物合成多糖的能量利用

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摘要

Synthesis of reserve polysaccharide by mixed rumen organisms fermenting glucose, maltose, cellobiose, and xylose has been studied in relation to the adenosine triphosphate energy calculated to be available from substrate fermentation. About 80% of the energy available from glucose and xylose was used for polysaccharide synthesis, whereas, assuming hydrolytic cleavage of the disaccharides, more than 100% was used when cellobiose and maltose were the substrates. If, however, phosphorolytic cleavage of the disaccharides, for which there is evidence, was involved, the energy from both maltose and cellobiose fermentation was used with about the same efficiency as that from glucose and xylose fermentation. The rumen fluid used was collected 24 hr after feeding, and growth of microorganisms in such samples was sufficient to account for utilization of less than 10% of the total energy becoming available during the 40-min incubation period.
机译：已经研究了通过混合葡萄糖，麦芽糖，纤维二糖和木糖的瘤胃生物合成储备多糖的方法，该方法与可从底物发酵获得的三磷酸腺苷能量有关。从葡萄糖和木糖获得的能量中约有80％用于多糖合成，而假设二糖被水解裂解，则以纤维二糖和麦芽糖为底物时，使用的能量超过100％。但是，如果涉及二糖的磷酸裂解，则有证据表明，麦芽糖和纤维二糖发酵产生的能量与葡萄糖和木糖发酵产生的能量几乎相同。进食后24小时收集所用的瘤胃液，此类样品中微生物的生长足以说明在40分钟的培养期内不到总能量的10％被利用。

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