Boosting productivity of heterotrophic microalgae by efficient control of the oxygen transfer coefficient using a microbubble sparger

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dc.contributor.authorJung Hyun Ju-
dc.contributor.authorBaek Rock Oh-
dc.contributor.authorDong-Jin Ko-
dc.contributor.authorSun-Yeon Heo-
dc.contributor.authorJong-Jea Lee-
dc.contributor.authorY M Kim-
dc.contributor.authorK Yang-
dc.contributor.authorJeong-Woo Seo-
dc.contributor.authorW K Hong-
dc.contributor.authorChul Ho Kim-
dc.date.accessioned2019-10-28T16:30:12Z-
dc.date.available2019-10-28T16:30:12Z-
dc.date.issued2019-
dc.identifier.issn2211-9264-
dc.identifier.uri10.1016/j.algal.2019.101474ko
dc.identifier.urihttps://oak.kribb.re.kr/handle/201005/18887-
dc.description.abstractWe isolated and characterized an oleaginous Thraustochytrid microalga. Based on 18s rRNA sequencing, we classified this strain as Schizochytrium sp. SH103. Growth of these cells in a 5L fermentor with a microbubble-type sparger (MTS) efficiently increased the oxygen transfer coefficient (OTC), while inducing only low external stress. For fermentation under conditions of low agitation (100 rpm) and aeration (3L/min), the OTC was 8.6-fold higher using a MTS than a general type sparger (GTS). Under these same conditions, dry cell weight (DCW) productivity (0.54 vs. 1.26g/L·h) and total lipid productivity (0.29 vs. 0.61g/L·h) were each about 2.2-fold higher using a MTS than a GTS. Under conditions that optimized the OTC in a MTS fermentor (876 h -1), DCW productivity, total lipid productivity and DHA productivity were each 1.3-fold greater than non-optimized condition. Fed-batch fermentation experiments indicated the maximal DCW was 100.6g/L at 48 h, maximal DCW productivity was 2.1g/L·h, maximal lipid content was 48.6g/L at 48 h, and lipid productivity was 1.0 g/L·h. Additionally, the results of experiments using a 50L MTS fermentor (96.0g/L DCW and 44.3g/L total lipids at 48h) were similar to those using the 5L fermentor. Our results suggest that use of a MTS may help to achieve the efficient fermentation of heterotrophic microalgae for high cell densities.-
dc.publisherElsevier-
dc.titleBoosting productivity of heterotrophic microalgae by efficient control of the oxygen transfer coefficient using a microbubble sparger-
dc.title.alternativeBoosting productivity of heterotrophic microalgae by efficient control of the oxygen transfer coefficient using a microbubble sparger-
dc.typeArticle-
dc.citation.titleAlgal Research-Biomass Biofuels and Bioproducts-
dc.citation.number0-
dc.citation.endPage101474-
dc.citation.startPage101474-
dc.citation.volume41-
dc.contributor.affiliatedAuthorJung Hyun Ju-
dc.contributor.affiliatedAuthorBaek Rock Oh-
dc.contributor.affiliatedAuthorDong-Jin Ko-
dc.contributor.affiliatedAuthorSun-Yeon Heo-
dc.contributor.affiliatedAuthorJong-Jea Lee-
dc.contributor.affiliatedAuthorJeong-Woo Seo-
dc.contributor.affiliatedAuthorChul Ho Kim-
dc.contributor.alternativeName주정현-
dc.contributor.alternativeName오백록-
dc.contributor.alternativeName고동진-
dc.contributor.alternativeName허선연-
dc.contributor.alternativeName이종재-
dc.contributor.alternativeName김영민-
dc.contributor.alternativeName양권석-
dc.contributor.alternativeName서정우-
dc.contributor.alternativeName홍원경-
dc.contributor.alternativeName김철호-
dc.identifier.bibliographicCitationAlgal Research-Biomass Biofuels and Bioproducts, vol. 41, pp. 101474-101474-
dc.identifier.doi10.1016/j.algal.2019.101474-
dc.subject.keywordSchizochytrium sp.-
dc.subject.keywordBio-oil-
dc.subject.keywordMicrobubble-
dc.subject.keywordOxygen transfer coefficient-
dc.subject.localSchizochytrium sp.-
dc.subject.localBio-oil-
dc.subject.localbio-oil-
dc.subject.localMicrobubble-
dc.subject.localmicrobubble-
dc.subject.localOxygen transfer coefficient-
dc.description.journalClassY-
Appears in Collections:
Jeonbuk Branch Institute > Microbial Biotechnology Research Center > 1. Journal Articles
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