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Article: Effect of postharvest treatments on Amaranthus betacyanin degradation evaluated by visible/near-infrared spectroscopy

TitleEffect of postharvest treatments on Amaranthus betacyanin degradation evaluated by visible/near-infrared spectroscopy
Authors
KeywordsAmaranthus
Betacyanins
Pigment degradation
Postharvest treatments
Visible/near infrared spectroscopy
Issue Date2001
PublisherWiley-Blackwell Publishing, Inc. The Journal's web site is located at http://www.wiley.com/bw/journal.asp?ref=0022-1147
Citation
Journal Of Food Science, 2001, v. 66 n. 8, p. 1112-1118 How to Cite?
AbstractA visible/near-infrared spectrophotometric method was developed for betacyanin and moisture content in Amaranthus samples. A standard error of prediction (SEP) of 0.25 mg/g for betacyanins (r 2=0.97) and 2.18% for moisture (r 2=0.99) was obtained on the validation sample set. Effect of 5 postharvest treatments on betacyanin degradation was assessed. Freeze-drying and -18°C frozen storage gave over 97% pigment retention, compared to natural air (52.8%), solar drying (63.5%), air oven drying (61.9 to 83.1%), and 14°C storage (78.3%). Air-drying gave the lowest degradation rate and longest half-life among the solar and oven-drying treatments for 8 h. Dried samples showed good pigment stability with 28.6 mo half-life at 25°C.
Persistent Identifierhttp://hdl.handle.net/10722/68430
ISSN
2015 Impact Factor: 1.649
2015 SCImago Journal Rankings: 0.839
References

 

DC FieldValueLanguage
dc.contributor.authorCai, YZen_HK
dc.contributor.authorCorke, Hen_HK
dc.date.accessioned2010-09-06T06:04:33Z-
dc.date.available2010-09-06T06:04:33Z-
dc.date.issued2001en_HK
dc.identifier.citationJournal Of Food Science, 2001, v. 66 n. 8, p. 1112-1118en_HK
dc.identifier.issn0022-1147en_HK
dc.identifier.urihttp://hdl.handle.net/10722/68430-
dc.description.abstractA visible/near-infrared spectrophotometric method was developed for betacyanin and moisture content in Amaranthus samples. A standard error of prediction (SEP) of 0.25 mg/g for betacyanins (r 2=0.97) and 2.18% for moisture (r 2=0.99) was obtained on the validation sample set. Effect of 5 postharvest treatments on betacyanin degradation was assessed. Freeze-drying and -18°C frozen storage gave over 97% pigment retention, compared to natural air (52.8%), solar drying (63.5%), air oven drying (61.9 to 83.1%), and 14°C storage (78.3%). Air-drying gave the lowest degradation rate and longest half-life among the solar and oven-drying treatments for 8 h. Dried samples showed good pigment stability with 28.6 mo half-life at 25°C.en_HK
dc.languageengen_HK
dc.publisherWiley-Blackwell Publishing, Inc. The Journal's web site is located at http://www.wiley.com/bw/journal.asp?ref=0022-1147en_HK
dc.relation.ispartofJournal of Food Scienceen_HK
dc.rightsThe definitive version is available at www3.interscience.wiley.com-
dc.subjectAmaranthusen_HK
dc.subjectBetacyaninsen_HK
dc.subjectPigment degradationen_HK
dc.subjectPostharvest treatmentsen_HK
dc.subjectVisible/near infrared spectroscopyen_HK
dc.titleEffect of postharvest treatments on Amaranthus betacyanin degradation evaluated by visible/near-infrared spectroscopyen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-1147&volume=66&issue=8&spage=1112&epage=1118&date=2001&atitle=Effect+of+postharvest+treatments+on+Amaranthus+betacyanin+degradation+evaluated+by+visible/near-infrared+spectroscopyen_HK
dc.identifier.emailCai, YZ: yzcai@hkucc.hku.hken_HK
dc.identifier.emailCorke, H: harold@hku.hken_HK
dc.identifier.authorityCai, YZ=rp00661en_HK
dc.identifier.authorityCorke, H=rp00688en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0035664994en_HK
dc.identifier.hkuros65891en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035664994&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume66en_HK
dc.identifier.issue8en_HK
dc.identifier.spage1112en_HK
dc.identifier.epage1118en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridCai, YZ=8684149300en_HK
dc.identifier.scopusauthoridCorke, H=7007102942en_HK

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