反应详情

The strains Enterobacter agglomerans AJ13355 and the Klebsiella planticola AJ13399 were transformed with pMWC or pMWCB. Each of the resulting transformants AJ13355/pMWC, AJ13355/pMWCB, AJ13399/pMWC and AJ13399/pMWCB and the parent strains were inoculated into 500 ml-volume flask containing 20 ml of culture medium comprising 40 g/L glucose, 20 g/L ammonium sulfate, 0.5 g/L magnesium sulfate heptahydrate, 2 g/L potassium dihydrogenphosphate, 0.5 g/L sodium chloride, 0.25 g/L calcium chloride heptahydrate, 0.02 g/L ferrous sulfate heptahydrate, 0.02 g/L manganese sulfate tetrahydrate, 0.72 mg/L zinc sulfate dihydrate, 0.64 mg/L copper sulfate pentahydrate, 0.72 mg/L cobalt chloride hexahydrate, 0.4 mg/L boric acid, 1.2 mg/L sodium molybdate dihydrate, 2 g/L yeast extract, and 30 g/L calcium carbonate, and cultured at 37° C. for 15 hours with shaking. After the cultivation was completed, L-glutamic acid accumulated in the culture medium and residual glucose were measured. The results are shown in Table 1.

1. additioncontaining 20 ml of culture medium
2. extractionextract