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Article: Antioxidant activity of betalains from plants of the Amaranthaceae

TitleAntioxidant activity of betalains from plants of the Amaranthaceae
Authors
KeywordsAmaranthaceae
Anti-oxidants
Antioxidant activity
Betacyanins
Betalains
Betaxanthins
Colorants
DPPH.
Issue Date2003
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/jafcau
Citation
Journal Of Agricultural And Food Chemistry, 2003, v. 51 n. 8, p. 2288-2294 How to Cite?
AbstractAntioxidant activity of betalain pigments (seven pure compounds and four combined fractions) from plants of the family Amaranthaceae was evaluated using the modified DPPH. (1,1-diphenyl-2-picrylhydrazyl) method. All tested betalains exhibited strong antioxidant activity. Their EC50 values ranged from 3.4 to 8.4 μM. Gomphrenin type betacyanins (mean = 3.7 μM) and betaxanthins (mean = 4.2 μM) demonstrated the strongest antioxidant activity, 3-4-fold stronger than ascorbic acid (13.9 μM) and also stronger than rutin (6.1 μM) and catechin (7.2 μM). Antioxidant activity of the tested betalains decreased in the following order: simple gomphrenins > acylated gomphrenins > dopamine-betaxanthin > (S)-tryptophan-betaxanthin > 3-methoxytyramine-betaxanthin > betanin/isobetanin > celosianins > iresinins > amaranthine/isoamaranthine. This study also investigated and discussed the relationship between the chemical structure and the activity of the betalains. The free radical scavenging activity of the betalains usually increased with the numbers of hydroxyl/imino groups and, moreover, depended on the position of hydroxyl groups and glycosylation of aglycones in the betalain molecules.
Persistent Identifierhttp://hdl.handle.net/10722/68641
ISSN
2015 Impact Factor: 2.857
2015 SCImago Journal Rankings: 1.246
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorCai, Yen_HK
dc.contributor.authorSun, Men_HK
dc.contributor.authorCorke, Hen_HK
dc.date.accessioned2010-09-06T06:06:23Z-
dc.date.available2010-09-06T06:06:23Z-
dc.date.issued2003en_HK
dc.identifier.citationJournal Of Agricultural And Food Chemistry, 2003, v. 51 n. 8, p. 2288-2294en_HK
dc.identifier.issn0021-8561en_HK
dc.identifier.urihttp://hdl.handle.net/10722/68641-
dc.description.abstractAntioxidant activity of betalain pigments (seven pure compounds and four combined fractions) from plants of the family Amaranthaceae was evaluated using the modified DPPH. (1,1-diphenyl-2-picrylhydrazyl) method. All tested betalains exhibited strong antioxidant activity. Their EC50 values ranged from 3.4 to 8.4 μM. Gomphrenin type betacyanins (mean = 3.7 μM) and betaxanthins (mean = 4.2 μM) demonstrated the strongest antioxidant activity, 3-4-fold stronger than ascorbic acid (13.9 μM) and also stronger than rutin (6.1 μM) and catechin (7.2 μM). Antioxidant activity of the tested betalains decreased in the following order: simple gomphrenins > acylated gomphrenins > dopamine-betaxanthin > (S)-tryptophan-betaxanthin > 3-methoxytyramine-betaxanthin > betanin/isobetanin > celosianins > iresinins > amaranthine/isoamaranthine. This study also investigated and discussed the relationship between the chemical structure and the activity of the betalains. The free radical scavenging activity of the betalains usually increased with the numbers of hydroxyl/imino groups and, moreover, depended on the position of hydroxyl groups and glycosylation of aglycones in the betalain molecules.en_HK
dc.languageengen_HK
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/jafcauen_HK
dc.relation.ispartofJournal of Agricultural and Food Chemistryen_HK
dc.subjectAmaranthaceaeen_HK
dc.subjectAnti-oxidantsen_HK
dc.subjectAntioxidant activityen_HK
dc.subjectBetacyaninsen_HK
dc.subjectBetalainsen_HK
dc.subjectBetaxanthinsen_HK
dc.subjectColorantsen_HK
dc.subjectDPPH.en_HK
dc.subject.meshAmaranthaceae - chemistry-
dc.subject.meshAntioxidants - chemistry - pharmacology-
dc.subject.meshAscorbic Acid - pharmacology-
dc.subject.meshBetalains-
dc.subject.meshQuaternary Ammonium Compounds - chemistry - isolation and purification - pharmacology-
dc.titleAntioxidant activity of betalains from plants of the Amaranthaceaeen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-8561&volume=51&issue=8&spage=2288&epage=2294&date=2003&atitle=Antioxidant+activity+of+betalains+from+plants+of+the+Amaranthaceaeen_HK
dc.identifier.emailCai, Y: yzcai@hkucc.hku.hken_HK
dc.identifier.emailSun, M: meisun@hkucc.hku.hken_HK
dc.identifier.emailCorke, H: harold@hku.hken_HK
dc.identifier.authorityCai, Y=rp00661en_HK
dc.identifier.authoritySun, M=rp00779en_HK
dc.identifier.authorityCorke, H=rp00688en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/jf030045uen_HK
dc.identifier.pmid12670172-
dc.identifier.scopuseid_2-s2.0-0242515915en_HK
dc.identifier.hkuros81855en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0242515915&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume51en_HK
dc.identifier.issue8en_HK
dc.identifier.spage2288en_HK
dc.identifier.epage2294en_HK
dc.identifier.isiWOS:000182037000031-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridCai, Y=8684149300en_HK
dc.identifier.scopusauthoridSun, M=7403181447en_HK
dc.identifier.scopusauthoridCorke, H=7007102942en_HK

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