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Article: Effects of medium glucose concentration and pH on docosahexaenoic acid content of heterotrophic Crypthecodinium cohnii

TitleEffects of medium glucose concentration and pH on docosahexaenoic acid content of heterotrophic Crypthecodinium cohnii
Authors
KeywordsCrypthecodinium cohnii
Docosahexaenoic acid
Fatty acid composition
Glucose
Heterotrophic growth
pH
Issue Date2000
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/procbio
Citation
Process Biochemistry, 2000, v. 35 n. 10, p. 1205-1209 How to Cite?
AbstractThe effects of medium glucose concentration and pH on growth and docosahexaenoic acid (DHA, C22:6 ω-3) content of Crypthecodinium cohnii were investigated. Over a range of glucose concentrations (5-40 g 1-1) investigated, the highest specific growth rate (0.12 h-1), highest cell dry weight concentration (3.13 g 1-1) and highest growth yield on glucose (0.6 g g-1) were obtained at 20 g 1-1 glucose. However, the highest degree of fatty acid unsaturation (3.2) and highest DHA proportion (53.4% of total fatty acids) were achieved at 5 g 1-1 glucose. Low glucose concentrations enhanced the degree of fatty acid unsaturation and DHA formation. Medium pH also affected cell growth, fatty acid unsaturation and DHA proportion. When medium pH was 7.2, the highest specific growth rate (0.089 h-1), highest cell dry weight concentration (2.73 g 1-1), highest growth yield on glucose (0.564 g g-1), highest degree of fatty acid unsaturation (3.4) and highest DHA proportion (56.8% of total fatty acids) were obtained. Results suggest that glucose concentration and pH value could be effectively manipulated to achieve maximum DHA production by C. cohnii. (C) 2000 Elsevier Science Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/68591
ISSN
2015 Impact Factor: 2.529
2015 SCImago Journal Rankings: 0.937
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorJiang, Yen_HK
dc.contributor.authorChen, Fen_HK
dc.date.accessioned2010-09-06T06:05:57Z-
dc.date.available2010-09-06T06:05:57Z-
dc.date.issued2000en_HK
dc.identifier.citationProcess Biochemistry, 2000, v. 35 n. 10, p. 1205-1209en_HK
dc.identifier.issn1359-5113en_HK
dc.identifier.urihttp://hdl.handle.net/10722/68591-
dc.description.abstractThe effects of medium glucose concentration and pH on growth and docosahexaenoic acid (DHA, C22:6 ω-3) content of Crypthecodinium cohnii were investigated. Over a range of glucose concentrations (5-40 g 1-1) investigated, the highest specific growth rate (0.12 h-1), highest cell dry weight concentration (3.13 g 1-1) and highest growth yield on glucose (0.6 g g-1) were obtained at 20 g 1-1 glucose. However, the highest degree of fatty acid unsaturation (3.2) and highest DHA proportion (53.4% of total fatty acids) were achieved at 5 g 1-1 glucose. Low glucose concentrations enhanced the degree of fatty acid unsaturation and DHA formation. Medium pH also affected cell growth, fatty acid unsaturation and DHA proportion. When medium pH was 7.2, the highest specific growth rate (0.089 h-1), highest cell dry weight concentration (2.73 g 1-1), highest growth yield on glucose (0.564 g g-1), highest degree of fatty acid unsaturation (3.4) and highest DHA proportion (56.8% of total fatty acids) were obtained. Results suggest that glucose concentration and pH value could be effectively manipulated to achieve maximum DHA production by C. cohnii. (C) 2000 Elsevier Science Ltd.en_HK
dc.languageengen_HK
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/procbioen_HK
dc.relation.ispartofProcess Biochemistryen_HK
dc.rightsProcess Biochemistry. Copyright © Elsevier Ltd.en_HK
dc.subjectCrypthecodinium cohniien_HK
dc.subjectDocosahexaenoic aciden_HK
dc.subjectFatty acid compositionen_HK
dc.subjectGlucoseen_HK
dc.subjectHeterotrophic growthen_HK
dc.subjectpHen_HK
dc.titleEffects of medium glucose concentration and pH on docosahexaenoic acid content of heterotrophic Crypthecodinium cohniien_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1359-5113&volume=35&spage=1205&epage=1209&date=2000&atitle=Effects+of+medium+glucose+concentration+and+pH+on+docosahexaenoic+acid+content+of+heterotrophic+Crypthecodinium+cohniien_HK
dc.identifier.emailChen, F: sfchen@hku.hken_HK
dc.identifier.authorityChen, F=rp00672en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0032-9592(00)00163-1en_HK
dc.identifier.scopuseid_2-s2.0-0033926893en_HK
dc.identifier.hkuros52819en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033926893&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume35en_HK
dc.identifier.issue10en_HK
dc.identifier.spage1205en_HK
dc.identifier.epage1209en_HK
dc.identifier.isiWOS:000088155200016-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridJiang, Y=24605346600en_HK
dc.identifier.scopusauthoridChen, F=7404907980en_HK

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