Elucidation of PHA accumulation mechanism by mixed microbial cultures with high PHA accumulation ability from wastewater substrates

2014 Fiscal Year Final Research Report

• Project/Area Number: 24681010
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Environmental technology/Environmental materials
• Research Institution: Kitasato University
• Principal Investigator: INOUE Daisuke 北里大学, 医療衛生学部, 准教授 (70448091)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 省資源技術 / バイオリファイナリー / PHA / 下水汚泥 / 微生物挙動解析

Outline of Final Research Achievements

This study aimed to elucidate the PHA accumulation mechanism from wastewater substrates by mixed microbial cultures with high PHA accumulation ability that are constructed from activated sludge by a feast-famine method. Results of this study revealed the followings: (1) Most of activated sludge bacteria are capable of producing PHA, (2) short-chain fatty acids are preferable substrates for PHA production by PHA-accumulating bacteria in activated sludge, and (3) PHA-accumulating bacteria belonging to Rhodocyclales make a great contribution to PHA accumulation by mixed microbial cultures constructed from activated sludge by a feast-famine method.

Free Research Field

生物環境工学