丙酮酸发酵能力的提高

IMPROVEMENT OF PYRUVATE FERMENTATION ABILITY

筛选了 3 氟代丙酮酸敏感型突变株 ,丙酮酸发酵生产水平正突变率 1 0 0 % ,最高产酸达584mmol/L ,提高 77% ;作为对照 ,3 氟代丙酮酸抗性型的正突变率只有 1 2 .5%。第 2次γ 照射处理中 ,DG抗性突变株的残糖从 3 .2 1 g/L降至 0 .0 1 1 6g/L。

fluoropyruvate sensitive mutants were screened, positive mutation rate of pyruvic acid fermentation was 100% with the highest yield 584mM and increment of 77%. As a control, the positive rate of 3 fluoropyruvate resistant mutation was only 12.5%. After next treatment with γ radiation, residual glucose of DG resistant mutants decreased from 3.21g/L to \{0.0116\}g/L.\;