Coproduction of exopolysaccharide and polyhydroxyalkanoates from Sphingobium yanoikuyae BBL01 using biochar pretreated plant biomass hydrolysate
- Authors
- Bhatia, Shashi Kant; Gurav, Ranjit; Kim, Byungchan; Kim, Suhyun; Cho, Do-Hyun; Jung, Heeju; Kim, Yun-Gon; Kim, Jae-Seok; Yang, Yung -Hun
- Issue Date
- Oct-2022
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Exopolysaccharide; Polyhydroxyalkanoates; Biomass; Biochar; Detoxification; Pretreatment
- Citation
- BIORESOURCE TECHNOLOGY, v.361
- Journal Title
- BIORESOURCE TECHNOLOGY
- Volume
- 361
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/43639
- DOI
- 10.1016/j.biortech.2022.127753
- ISSN
- 0960-8524
- Abstract
- Sphingobium yanoikuyae BBL01 can produce exopolysaccharides (EPS) and polyhydroxyalkanoates (PHAs). The effect of side products (furfural, hydroxymethylfurfural (HMF), vanillin, and acetate) produced during pre-treatment of biomass was evaluated on S. yanoikuyae BBL01. It was observed that a certain concentration range (0.01-0.03 %) of these compounds can improve growth, EPS production, and polyhydroxybutyrate (PHB) accumulation. The addition of HMF increases glucose and xylose utilization while other side products have a negative effect. The C/N of 5 favors EPS production (3.24 +/- 0.05 g/L), while a higher C/N ratio of 30 promotes PHB accumulation (38.7 +/- 0.08 % w/w), when commercial sugar is used as a carbon source. Pine biomass -derived biochar was able to remove 40 +/- 2.1 % of total phenolic. Various biomass hydrolysates were evalu-ated and the use of detoxified pine biomass hydrolysate (DPH) as a carbon source resulted in the higher coproduction of EPS (2.83 +/- 0.03 g/L) and PHB (40.8 +/- 2.4 % w/w).
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