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Article: Kinetics for the reversible isomerization reaction of trans-astaxanthin

TitleKinetics for the reversible isomerization reaction of trans-astaxanthin
Authors
KeywordsAstaxanthin
First-order reversible reaction
Isomerization
Kinetics
Issue Date2001
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/foodchem
Citation
Food Chemistry, 2001, v. 73 n. 2, p. 131-137 How to Cite?
AbstractThe isomerization of cis-astaxanthins in organic solvents, a reverse reaction of the isomerization of trans-astaxanthin, was investigated. HPLC analysis revealed that cis-astaxanthins could be also isomerized to produce trans-astaxanthin and the other cis-astaxanthin. The results showed that the isomerization of trans-astaxanthin to cis-astaxanthin was a reversible reaction and followed first-order reversible reaction kinetics. The effect of temperature on the isomerization reaction of trans-astaxanthin, dissolved in dimethyl sulfoxide at 20-70°C or in a mixture of dichloromethane and methanol (25:75) at 10°C, respectively, was also studied. The results indicated that increasing temperature could markedly increase the reaction rate of trans-astaxanthin isomerization. Temperature-dependence of the isomerization rate constants of trans-astaxanthins could be described by the Arrhenius equation with activation energy (Ea) of 105.8±4.2 kJ/mol. Copyright © 2001 Elsevier Science Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/68558
ISSN
2015 Impact Factor: 4.052
2015 SCImago Journal Rankings: 1.620
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYuan, JPen_HK
dc.contributor.authorChen, Fen_HK
dc.date.accessioned2010-09-06T06:05:40Z-
dc.date.available2010-09-06T06:05:40Z-
dc.date.issued2001en_HK
dc.identifier.citationFood Chemistry, 2001, v. 73 n. 2, p. 131-137en_HK
dc.identifier.issn0308-8146en_HK
dc.identifier.urihttp://hdl.handle.net/10722/68558-
dc.description.abstractThe isomerization of cis-astaxanthins in organic solvents, a reverse reaction of the isomerization of trans-astaxanthin, was investigated. HPLC analysis revealed that cis-astaxanthins could be also isomerized to produce trans-astaxanthin and the other cis-astaxanthin. The results showed that the isomerization of trans-astaxanthin to cis-astaxanthin was a reversible reaction and followed first-order reversible reaction kinetics. The effect of temperature on the isomerization reaction of trans-astaxanthin, dissolved in dimethyl sulfoxide at 20-70°C or in a mixture of dichloromethane and methanol (25:75) at 10°C, respectively, was also studied. The results indicated that increasing temperature could markedly increase the reaction rate of trans-astaxanthin isomerization. Temperature-dependence of the isomerization rate constants of trans-astaxanthins could be described by the Arrhenius equation with activation energy (Ea) of 105.8±4.2 kJ/mol. Copyright © 2001 Elsevier Science Ltd.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/foodchemen_HK
dc.relation.ispartofFood Chemistryen_HK
dc.rightsFood Chemistry. Copyright © Elsevier BV.en_HK
dc.subjectAstaxanthinen_HK
dc.subjectFirst-order reversible reactionen_HK
dc.subjectIsomerizationen_HK
dc.subjectKineticsen_HK
dc.titleKinetics for the reversible isomerization reaction of trans-astaxanthinen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0308-8146&volume=73&issue=2&spage=131&epage=137&date=2001&atitle=Kinetics+for+the+reversible+isomerization+reaction+of+trans-astaxanthinen_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/S0308-8146(01)00107-8en_HK
dc.identifier.scopuseid_2-s2.0-0035057474en_HK
dc.identifier.hkuros61478en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035057474&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume73en_HK
dc.identifier.issue2en_HK
dc.identifier.spage131en_HK
dc.identifier.epage137en_HK
dc.identifier.isiWOS:000168227400001-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridYuan, JP=7403401467en_HK
dc.identifier.scopusauthoridChen, F=7404907980en_HK

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