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Article: Growth dynamics and the proximate biochemical composition and fatty acid profile of the heterotrophically grown diatom Cyclotella cryptica

TitleGrowth dynamics and the proximate biochemical composition and fatty acid profile of the heterotrophically grown diatom Cyclotella cryptica
Authors
KeywordsAsh
Bacillariophyta
Carbohydrate
Lipid
Mixing
Protein
PUFAs
Issue Date2010
PublisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0921-8971
Citation
Journal Of Applied Phycology, 2010, v. 22 n. 2, p. 165-171 How to Cite?
AbstractTo investigate the nutritional value of the diatom Cyclotella cryptica as an alternative feed for aquaculture, its heterotrophic growth characteristics were studied. First, the proximate biochemical composition and fatty acid profiles were studied under a controlled heterotrophic growth condition. The approximate total ash, carbohydrate, lipid, and protein content were 245 mg g -1 (dry weight), 360 mg g -1, 165 mg g -1 and 260 mg g -1, respectively. Polyunsaturated fatty acids accounted for 24.5, 31.3, 45.1 and 17.3% of the total lipids in the phospholipid, sterol, free fatty acid and triglyceride classes. Secondly, the effect of aeration and agitation rates on the specific growth rate of C. cryptica under heterotrophic conditions was studied. The maximum specific growth rate was not significantly affected (P > 0.05) by the rate of agitation within the range of 100 to 160 rpm, but it was significantly affected (P > 0.05) by the rate of aeration. Optimal growth occurred when the aeration rate was within the range of 0.44 to 1.07 v/v/min. Viability measurements throughout the growth period showed that the C. cryptica cells remained viable in spite of the varied cultivation conditions. Hydrodynamic forces are an important parameter within biological systems, and optimisation is crucial for the successful scale-up of microalgal cultivation systems. Whilst the investigation was preliminary in nature, the information gained in this study will be useful for the continual development of an alternative and cost-effective feed for bivalve spat rations. © 2009 Springer Science+Business Media B.V.
Persistent Identifierhttp://hdl.handle.net/10722/124062
ISSN
2015 Impact Factor: 2.372
2015 SCImago Journal Rankings: 0.852
PubMed Central ID
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorPahl, SLen_HK
dc.contributor.authorLewis, DMen_HK
dc.contributor.authorChen, Fen_HK
dc.contributor.authorKing, KDen_HK
dc.date.accessioned2010-10-19T04:37:09Z-
dc.date.available2010-10-19T04:37:09Z-
dc.date.issued2010en_HK
dc.identifier.citationJournal Of Applied Phycology, 2010, v. 22 n. 2, p. 165-171en_HK
dc.identifier.issn0921-8971en_HK
dc.identifier.urihttp://hdl.handle.net/10722/124062-
dc.description.abstractTo investigate the nutritional value of the diatom Cyclotella cryptica as an alternative feed for aquaculture, its heterotrophic growth characteristics were studied. First, the proximate biochemical composition and fatty acid profiles were studied under a controlled heterotrophic growth condition. The approximate total ash, carbohydrate, lipid, and protein content were 245 mg g -1 (dry weight), 360 mg g -1, 165 mg g -1 and 260 mg g -1, respectively. Polyunsaturated fatty acids accounted for 24.5, 31.3, 45.1 and 17.3% of the total lipids in the phospholipid, sterol, free fatty acid and triglyceride classes. Secondly, the effect of aeration and agitation rates on the specific growth rate of C. cryptica under heterotrophic conditions was studied. The maximum specific growth rate was not significantly affected (P > 0.05) by the rate of agitation within the range of 100 to 160 rpm, but it was significantly affected (P > 0.05) by the rate of aeration. Optimal growth occurred when the aeration rate was within the range of 0.44 to 1.07 v/v/min. Viability measurements throughout the growth period showed that the C. cryptica cells remained viable in spite of the varied cultivation conditions. Hydrodynamic forces are an important parameter within biological systems, and optimisation is crucial for the successful scale-up of microalgal cultivation systems. Whilst the investigation was preliminary in nature, the information gained in this study will be useful for the continual development of an alternative and cost-effective feed for bivalve spat rations. © 2009 Springer Science+Business Media B.V.en_HK
dc.languageengen_HK
dc.publisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0921-8971en_HK
dc.relation.ispartofJournal of Applied Phycologyen_HK
dc.rightsSpringer Science+Business Media B.V.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectAshen_HK
dc.subjectBacillariophytaen_HK
dc.subjectCarbohydrateen_HK
dc.subjectLipiden_HK
dc.subjectMixingen_HK
dc.subjectProteinen_HK
dc.subjectPUFAsen_HK
dc.titleGrowth dynamics and the proximate biochemical composition and fatty acid profile of the heterotrophically grown diatom Cyclotella crypticaen_HK
dc.typeArticleen_HK
dc.identifier.emailChen, F: sfchen@hku.hken_HK
dc.identifier.authorityChen, F=rp00672en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1007/s10811-009-9436-7en_HK
dc.identifier.pmid21037795-
dc.identifier.pmcidPMC2953630-
dc.identifier.scopuseid_2-s2.0-77951978299en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77951978299&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume22en_HK
dc.identifier.issue2en_HK
dc.identifier.spage165en_HK
dc.identifier.epage171en_HK
dc.identifier.eissn1573-5176en_HK
dc.identifier.isiWOS:000275538700007-
dc.publisher.placeNetherlandsen_HK
dc.description.otherSpringer Open Choice, 01 Dec 2010-
dc.identifier.scopusauthoridPahl, SL=26435314600en_HK
dc.identifier.scopusauthoridLewis, DM=7404751390en_HK
dc.identifier.scopusauthoridChen, F=7404907980en_HK
dc.identifier.scopusauthoridKing, KD=7202001375en_HK
dc.identifier.citeulike4403178-

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