Utilization of the acid hydrolysate of defatted Chlorella biomass as a sole fermentation substrate for the production of biosurfactant from Bacillus subtilis C9

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dc.contributor.authorJin-Ho Yun-
dc.contributor.authorDae Hyun Cho-
dc.contributor.authorB Lee-
dc.contributor.authorYong Jae Lee-
dc.contributor.authorDong Yun Choi-
dc.contributor.authorHee-Sik Kim-
dc.contributor.authorY K Chang-
dc.date.accessioned2020-04-24T16:30:29Z-
dc.date.available2020-04-24T16:30:29Z-
dc.date.issued2020-
dc.identifier.issn2211-9264-
dc.identifier.uri10.1016/j.algal.2020.101868ko
dc.identifier.urihttps://oak.kribb.re.kr/handle/201005/19413-
dc.description.abstractAlthough algal biofuels have been promoted as a carbon-neutral alternative to fossil fuels, several economic and technological barriers challenge the much-anticipated success of algae as a commercial bio-feedstock. In particular, utilizing only a lipid portion of harvested algal biomass limits possible monetary returns from algal biomass within which non-lipid compounds generally comprise a major proportion. Previous studies thus demonstrated the production of ethanol from defatted algal biomass to improve overall economic outlook of the nascent algae industry; however, it is also possible to utilize residual algal biomass as a fermentation substrate for bacterial strains producing high value alternative products. Therefore, the goal of this study was to compare the yield of biosurfactant from B. subtilis C9 in conventional culture medium and the acid hydrolysate of defatted Chlorella biomass (DCB). Although increasing the concentration of acid catalyst from 0 N to 1.0 N was expected to proportionally enhance the effectiveness of dilute acid hydrolysis, the results indicated that DCB hydrolysates treated under different acid conditions at 121 °C for 15 min exhibited the highest yield of fermentable monosaccharides when treated with 0.25 N HCl. Subsequently, the fermentation of B. subtilis C9 was performed in both Luria-Bertani (LB) and DCB hydrolysate medium after adjusting salinity and monosaccharide concentration to identical levels; a significantly greater yield of biosurfactant was observed in the culture grown with DCB hydrolysate medium, while the presence of magnesium and manganese co-factors in DCB hydrolysate contributed to a greater biosurfactant yield. Collectively, these results suggest that the valorization of defatted algal biomass could be also accomplished by incorporating biosurfactant fermentation into algal biorefinery processes and call for further process optimization efforts that consider factors associated with the operation of industrial algal biorefineries.-
dc.publisherElsevier-
dc.titleUtilization of the acid hydrolysate of defatted Chlorella biomass as a sole fermentation substrate for the production of biosurfactant from Bacillus subtilis C9-
dc.title.alternativeUtilization of the acid hydrolysate of defatted Chlorella biomass as a sole fermentation substrate for the production of biosurfactant from Bacillus subtilis C9-
dc.typeArticle-
dc.citation.titleAlgal Research-Biomass Biofuels and Bioproducts-
dc.citation.number0-
dc.citation.endPage101868-
dc.citation.startPage101868-
dc.citation.volume47-
dc.contributor.affiliatedAuthorJin-Ho Yun-
dc.contributor.affiliatedAuthorDae Hyun Cho-
dc.contributor.affiliatedAuthorYong Jae Lee-
dc.contributor.affiliatedAuthorDong Yun Choi-
dc.contributor.affiliatedAuthorHee-Sik Kim-
dc.contributor.alternativeName윤진호-
dc.contributor.alternativeName조대현-
dc.contributor.alternativeName이봉수-
dc.contributor.alternativeName이용재-
dc.contributor.alternativeName최동윤-
dc.contributor.alternativeName김희식-
dc.contributor.alternativeName장용근-
dc.identifier.bibliographicCitationAlgal Research-Biomass Biofuels and Bioproducts, vol. 47, pp. 101868-101868-
dc.identifier.doi10.1016/j.algal.2020.101868-
dc.subject.keywordAcid hydrolysis-
dc.subject.keywordBacillus subtilis-
dc.subject.keywordBiosurfactant-
dc.subject.keywordChlorella-
dc.subject.keywordDefatted algal biomass-
dc.subject.keywordFermentation-
dc.subject.localAcid hydrolysis-
dc.subject.localBacillus subtilis-
dc.subject.localbacillus subtilis-
dc.subject.localBiosurfactant-
dc.subject.localbiosurfactant-
dc.subject.localBiosurfactants-
dc.subject.localChlorella-
dc.subject.localchlorella-
dc.subject.localDefatted algal biomass-
dc.subject.localfermentation-
dc.subject.localFermentation-
dc.description.journalClassY-
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Synthetic Biology and Bioengineering Research Institute > Cell Factory Research Center > 1. Journal Articles
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