特集 「微生物によるバイオ水素製造技術の現状」
青森県土壌より単離したClostridium beijerinckii HU-1によるりんご搾り粕を原料とした水素発酵
2013 年 38 巻 1 号 p. 9-13
詳細
2013 年 38 巻 1 号 p. 9-13
Aomori prefecture, in which Hirosaki University is located, has a low average annual number of hours of sunshine (1541.9 h in 2011) and a large amount of agricultural residues such as apple pomace, pruned branches from apple trees, and rice straw that consist of various sugars. Therefore, we selected a fermentation process for biological H2 production. Apple pomace is one of the major agricultural residues in Aomori, and it would be useful to develop an effective application for it. In this article, we report that the insoluble material from apple pomace stimulated H2 production by a newly isolated Clostridium beijerinckii strain, HU-1. HU-1 produced H2 with a production rate of 14.5 mmol of H2/L/h in a fed-batch culture at 37°C, pH 6.0, and we determined that HU-1 was one of the highest H2-producing strains in Clostridia. When HU-1 was cultivated in a culture containing the insoluble material from apple pomace, HU-1 produced H2 at a rate approximately 1.2-fold greater than that observed without the addition of the insoluble material from apple pomace.
