KOPRI Repository

Microalgal lipid production using the hydrolysates of rice straw pretreated with gamma irradiation and alkali solution

Cited 8 time in scopus
Metadata Downloads
Title
Microalgal lipid production using the hydrolysates of rice straw pretreated with gamma irradiation and alkali solution
Authors
Joe, Min-Ho
Kim, Ji-Youn
Lim, Sangyong
Kim, Dong-Ho
Bai, Suk
Park, Hyun
Lee, Sung Gu
Han, Se Jong
Choi, Jong-il
Subject
Biotechnology & Applied Microbiology; Energy & Fuels
Keywords
Rice straw; Pretreatment; Microalgae; Gamma ray irradiation; Lipid
Issue Date
2015
Citation
Joe, Min-Ho, et al. 2015. "Microalgal lipid production using the hydrolysates of rice straw pretreated with gamma irradiation and alkali solution". Biotechnol Biofuels, 8: 125.
Abstract
Background: Lignocellulosic biomass has long been recognized as a potential sustainable source of sugars for biofuels. However, many physicochemical structural and compositional factors inhibit the enzymatic digestibility of the lignocellulosic biomass. In this study, efficient pretreatment method of rice straw (RS) was developed and the RS hydrolysate was applied in the cultivation of microalgae for lipid production. Results: Gamma ray irradiation (GRI) and alkali solution were used for the pretreatment, and saccharification was carried out with lignocellulolytic enzymes. When RS was pretreated by combined GRI and alkali method, the glucose and xylose saccharification yield after enzymatic hydrolysis increased up to 91.65 and 98.84 %, respectively. The enzymatic hydrolysate from the RS pretreated with the combined method was used to cultivate Chlorella protothecoides for lipid production. The maximum concentrations of biomass and fatty acid methyl ester of cells were 6.51 and 2.95 g/L, respectively. The lipid content of C. protothecoides from RS hydrolysate was comparable to that from glucose, and the lipid composition was similar between different carbon sources. Conclusion: These results demonstrate that the combined pretreatment with gamma irradiation was highly effective in preparing hydrolysate, and the rice straw hydrolysate could be used as an alternative carbon source for microalgal lipid production for biofuel.
DOI
http://dx.doi.org/10.1186/s13068-015-0308-x
Files in This Item
General Conditions
      ROMEO Green
    Can archive pre-print and post-print or publisher's version/PDF
      ROMEO Blue
    Can archive post-print (ie final draft post-refereeing) or publisher's version/PDF
      ROMEO Yellow
    Can archive pre-print (ie pre-refereeing)
      ROMEO White
    Archiving not formally supported

    qrcode

    Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

    Browse