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Article: Effects of salinity on cell growth and docosahexaenoic acid content of the heterotrophic marine microalga Crypthecodinium cohnii

TitleEffects of salinity on cell growth and docosahexaenoic acid content of the heterotrophic marine microalga Crypthecodinium cohnii
Authors
KeywordsCrypthecodinium cohnii
Docosahexaenoic acid
Fatty acid composition
Heterotrophic production
Microalgae
Salinity
Issue Date1999
PublisherSpringer Verlag.
Citation
Journal Of Industrial Microbiology And Biotechnology, 1999, v. 23 n. 6, p. 508-513 How to Cite?
AbstractThe effects of salinity on cell growth and docosahexaenoic acid (DHA) content of three marine microalgal strains, Crythecodinium cohnii ATCC 30556, C. cohnii ATCC 50051 and C. cohnii RJH were investigated. The lag phases of the three strains increased with increasing salinity in Porphyridium medium. The specific growth rate of C. cohnii ATCC 30556 was the highest at 9 g L-1 NaCl while the other two strains had their highest specific growth rates at 5g L-1 NaCl. The highest cell dry weight concentrations of 2.51 g L-1 and 1.56 g L-1 were achieved at 9 g L- 1 NaCl for C. cohnii ATCC 30556 and ATCC 50051, respectively, while the highest dry weight concentration of 2.49 g l-1 was achieved at 5 g L-1 NaCl for C. cohnii RJH. The highest cell growth yield coefficient on glucose was 0.5 g g-1 for both C. cohnii ATCC 30556 and C. cohnii RJH and 0.45 g g-1 for C. cohnii ATCC 50051. All three strains responded to the change of salinity by modifying their cellular fatty acid compositions. At 9 g L-1 NaCl, C. cohnii ATCC 30556 had the highest total fatty acid content and DHA (C22:6) proportion. In contrast, C. cohnii ATCC 50051 and C. cohnii RJH had the highest DHA content at 5 g L-1 NaCl. C. cohnii ATCC 30556 and ATCC 50051 had the highest DHA yield (131.55 and 68.24 mg L-1 respectively) at 9 g L-1 NaCl while C. cohnii RJH had the highest DHA yield (128.83 mg L-1) at 5 g L-1 NaCl.
Persistent Identifierhttp://hdl.handle.net/10722/68715
ISSN
2015 Impact Factor: 2.745
2015 SCImago Journal Rankings: 0.966
References

 

DC FieldValueLanguage
dc.contributor.authorJiang, Yen_HK
dc.contributor.authorChen, Fen_HK
dc.date.accessioned2010-09-06T06:07:00Z-
dc.date.available2010-09-06T06:07:00Z-
dc.date.issued1999en_HK
dc.identifier.citationJournal Of Industrial Microbiology And Biotechnology, 1999, v. 23 n. 6, p. 508-513en_HK
dc.identifier.issn1367-5435en_HK
dc.identifier.urihttp://hdl.handle.net/10722/68715-
dc.description.abstractThe effects of salinity on cell growth and docosahexaenoic acid (DHA) content of three marine microalgal strains, Crythecodinium cohnii ATCC 30556, C. cohnii ATCC 50051 and C. cohnii RJH were investigated. The lag phases of the three strains increased with increasing salinity in Porphyridium medium. The specific growth rate of C. cohnii ATCC 30556 was the highest at 9 g L-1 NaCl while the other two strains had their highest specific growth rates at 5g L-1 NaCl. The highest cell dry weight concentrations of 2.51 g L-1 and 1.56 g L-1 were achieved at 9 g L- 1 NaCl for C. cohnii ATCC 30556 and ATCC 50051, respectively, while the highest dry weight concentration of 2.49 g l-1 was achieved at 5 g L-1 NaCl for C. cohnii RJH. The highest cell growth yield coefficient on glucose was 0.5 g g-1 for both C. cohnii ATCC 30556 and C. cohnii RJH and 0.45 g g-1 for C. cohnii ATCC 50051. All three strains responded to the change of salinity by modifying their cellular fatty acid compositions. At 9 g L-1 NaCl, C. cohnii ATCC 30556 had the highest total fatty acid content and DHA (C22:6) proportion. In contrast, C. cohnii ATCC 50051 and C. cohnii RJH had the highest DHA content at 5 g L-1 NaCl. C. cohnii ATCC 30556 and ATCC 50051 had the highest DHA yield (131.55 and 68.24 mg L-1 respectively) at 9 g L-1 NaCl while C. cohnii RJH had the highest DHA yield (128.83 mg L-1) at 5 g L-1 NaCl.en_HK
dc.languageengen_HK
dc.publisherSpringer Verlag.en_HK
dc.relation.ispartofJournal of Industrial Microbiology and Biotechnologyen_HK
dc.subjectCrypthecodinium cohniien_HK
dc.subjectDocosahexaenoic aciden_HK
dc.subjectFatty acid compositionen_HK
dc.subjectHeterotrophic productionen_HK
dc.subjectMicroalgaeen_HK
dc.subjectSalinityen_HK
dc.titleEffects of salinity on cell growth and docosahexaenoic acid content of the heterotrophic marine microalga Crypthecodinium cohniien_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1367-5435&volume=23&issue=6&spage=508&epage=513&date=1999&atitle=Effects+of+salinity+on+cell+growth+and+docosahexaenoic+acid+content+of+the+heterotrophic+marine+microalga+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.scopuseid_2-s2.0-0033396131en_HK
dc.identifier.hkuros52951en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033396131&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume23en_HK
dc.identifier.issue6en_HK
dc.identifier.spage508en_HK
dc.identifier.epage513en_HK
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridJiang, Y=24605346600en_HK
dc.identifier.scopusauthoridChen, F=7404907980en_HK

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