Microbial biodiesel production from oil palm biomass hydrolysate using marine Rhodococcus sp. YHY01. (June 2017)

• Record Type: Journal Article
• Authors: Bhatia, Shashi Kant; Kim, Junyoung; Song, Hun-Seok; Kim, Hyun Joong; Jeon, Jong-Min; Sathiyanarayanan, Ganesan; Yoon, Jeong-Jun; Park, Kyungmoon; Kim, Yun-Gon; Yang, Yung-Hun
• Is Part Of: Bioresource technology. Volume 233(2017)
• Page Start: 99
• Page End: 109
• Publication Date: 2017-06
• Subjects: Biomass -- Biodiesel -- Fatty acids -- Lignocellulose -- Rhodococcus; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2017.02.061
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Rhodococcus sp. YHY 01 is able to utilize acetate, 4-HB and vanillin as carbon source. HMF, 4-HB and vanillin enhance saturated fatty acid content. Salt stress increases the content of unsaturated fatty acids. Production in EFBH hydrolysate results in 69% fatty acid accumulation. EFBH hydrolysate enhanced fatty acid accumulation by 37% in comparison to glucose. Abstract: The effect of various biomass derived inhibitors (i.e. furfural, hydroxymethylfurfural (HMF), vanillin, 4-hydroxy benzaldehyde (4-HB) and acetate) was investigated for fatty acid accumulation in Rhodococcus sp. YHY 01. Rhodococcus sp. YHY01 was able to utilize acetate, vanillin, and 4-HB for biomass production and fatty acid accumulation. The IC50 value for furfural (3.1 mM), HMF (3.2 mM), vanillin (2.0 mM), 4-HB (2.7 mM) and acetate (3.7 mM) was calculated. HMF and vanillin affect fatty acid composition and increase saturated fatty acid content. Rhodococcus sp. YHY 01 cultured with empty fruit bunch hydrolysate (EFBH) as the main carbon source resulted in enhanced biomass (20%) and fatty acid productivity (37%), in compression to glucose as a carbon source. Overall, this study showed the beneficial effects of inhibitory molecules on growth and fatty acid production, and support the idea of biomass hydrolysate utilization for biodiesel production by avoiding complex efforts to remove inhibitory compounds.