在低浓度葡萄糖上需氧生长的乳酸链球菌的终产物和发酵平衡
End products and fermentation balances for lactic streptococci grown aerobically on low concentrations of glucose.
作者信息
Brown W V, Collins E B
出版信息
Appl Environ Microbiol. 1977 Jan;33(1):38-42. doi: 10.1128/aem.33.1.38-42.1977.
Maximum acetate produced aerobically by Streptococcus diacetilactis and Streptococcus cremoris was 14% of 1 to 7 mumol of glucose/ml in a partially defined medium that contained lipoic acid. Y (glucose) values were 35.3 (S. diacetilactis) and 31.4 (S. cremoris) with low concentrations (1 to 7 mumol/ml) of glucose in the medium and 21 (S. diacetilactis) with higher concentrations (6 to 15 mumol/ml). Y (adenosine 5'-triphosphate) values for the bacteria, determined by taking into account the end products produced, were 15.6 and 13.9 for S. diacetilactis and S. cremoris, respectively, in the partially defined medium containing 1 to 7 mumol of glucose/ml and higher (21.5 and 18.9, respectively) in a complex medium that contained 2 mumol of glucose/ml. Addition of citrate in addition to glucose did not result in higher molar growth yields.
在含有硫辛酸的部分限定培养基中，双乙酰链球菌和嗜热链球菌需氧条件下产生的最大乙酸盐量为每毫升1至7微摩尔葡萄糖的14%。当培养基中葡萄糖浓度较低（1至7微摩尔/毫升）时，双乙酰链球菌的Y（葡萄糖）值为35.3，嗜热链球菌为31.4；当葡萄糖浓度较高（6至15微摩尔/毫升）时，双乙酰链球菌的Y（葡萄糖）值为21。考虑到产生的终产物，在每毫升含有1至7微摩尔葡萄糖的部分限定培养基中，双乙酰链球菌和嗜热链球菌的Y（三磷酸腺苷）值分别为15.6和13.9；在每毫升含有2微摩尔葡萄糖的复合培养基中，Y（三磷酸腺苷）值更高（分别为21.5和18.9）。除葡萄糖外添加柠檬酸盐并未导致更高的摩尔生长产率。
Zotero 插件