気体巻込み方式の搭型醗酵装置によるプロパン資化菌の培養

概要

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Cultivation of a strain of propane-utilizing bacteria isolated from soil was studied in a tower-type fermenter with a gas entrainment process under the closed gaseous phase of propane-oxygen mixture. The culture in the fermenter was performed successfully, and the results of the culture indicated that the fermenter is available for aerobic fermentation with a gaseous substrate. Since the fermenter employed as a gas entrainment apparatus for supplying the gas substrates, it was expected that the power consumption for the supply in the fermenter could by reduced, compared with that in a conventional stirred fermenter generally used. The addition of 0.2 g/l yeast extract to the culture medium improved effectively the bacterial growth. The cellular material obtained from the culture was found to contain about 56% protein and 12% fat. The amino acid content of the cellular protein was found normal for microbial cell materials. These results indicate that the cellular protein has a nutritional value as a feed. The propane-utilizing bacteria was identified as a related species of Corynebacterium hydrocarboclastus by the taxonomical study.
社団法人日本生物工学会の論文
1973-05-25