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The isolates from putrefying soybean curd were identified as Acinetobacter calcoaceticus, Bacillus cereus, Bacillus sp., Cardiobacterium sp., Escherichia coli, Klebsiella pneumoniae, Pantoea sp., Salmonella typhimurium, Staphylococcus aureus, Xenorhabdus luminescens, Yersinia sp.. The existence perc...

The isolates from putrefying soybean curd were identified as Acinetobacter calcoaceticus, Bacillus cereus, Bacillus sp., Cardiobacterium sp., Escherichia coli, Klebsiella pneumoniae, Pantoea sp., Salmonella typhimurium, Staphylococcus aureus, Xenorhabdus luminescens, Yersinia sp.. The existence percentages of the bacteria from putrefying soybean curd at room temperature storage were Bacillus cereus J55 23.57%, Xenorhabdus luminescens J48 22.73%, Acinetobacter calcoaceticus J61 22.26%, Klebsiella pneumoniae J62 21.25%, Salmonella typhimurium J51 2.87%, Pantoea sp. J57 2.65%, Bacillus sp. J58 1.43%, Cardiobacterium sp. J54 1.26%, Escherichia coli J53 1.20%, Staphvlococcus aureus J6O 0.93%, Yersinia sp. J50 0.05%, respectively. Four out of eleven bacteria as B. cereu J55, X. luminescens J48, Ac. calcoaceticus J61, Kl. pneumoniae J62 putrefied soybean curd and those bacteria produce amylase or proteinase as a extracellular enzyme. But S. typhimurium J51, Pantoea sp. J57, Bacillus sp. J58, Cardiobacterium sp. J54, E. coli 153, St. aureus J60, Yersinia sp. J50 were not putrefied soybean curd. The isolates detected to resistant on various antimicrobial agents. The majority were resistant to aminoside antiboitics as amicacin, gentamicin, tobramycin and were susceptible to ${\beta}$-lactamine antibiotics as penicillin G, oxacillin, cephalothin cefazolin, cefamandole.

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