BatchFrecycled181.238.13 Fed-batchGrecycled45.32.275.96 Fed-batchG/Srecycled45.43.48.9 Fed-batchG/Srecycled92.64.786.14 Fed-batchS/Sfresh34.23.7513.3 BatchS/Sfresh171.288.4 相关专利:WO9635799、US5599689 (三)利用酵母菌S.cerevisiae和细菌K.pneumoniae两步法发酵生产1,3-丙二醇 第一步,利用酵母菌S.cerevisiae将葡萄糖转化为甘油;第二步,利用细菌K.pneumoniae将甘油转化为1,3-丙二醇。 不同的菌株组合两步法发酵生产1,3-丙二醇的得率: 第一步第二步yieldcyieldd Aerobic,46hr,30℃ S.cerevisiae ATCC4132Aerobic,22hr,30℃ K.pneumoniae ATCC259553.03.6 Aerobic,38hr,30℃ S.cerevisiae ATCC64236Aerobic,23hr,30℃ K.pneumoniae ATCC259554.124.9 Aerobic,46hr S.cerevisiae ATCC64236Aerobic,22hr K.pneumoniae ATCC259551.882.24 Aerobic,38hr S.cerevisiae ATCC64236Aerobic,23hr K.pneumoniae ATCC259554.174.9 Aerobic,46hr S.cerevisiae ATCC4132Aerobic,32hr K.pneumoniae ATCC259556.748.0 Aerobic,38hr S.cerevisiae ATCC4132Aerobic,32hr K.pneumoniae ATCC259553.13.7 c:消耗100克碳水化合物产生的1,3-丙二醇的克数 d:丙二醇碳的摩尔数/消耗碳水化合物的碳摩尔数 相关专利:WO9635799、US5599689 (四)转甘油—3—磷酸脱氢酶或(和)甘油—3—磷酸酶基因的工程菌 (责任编辑:泉水) |