File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Degradation of Ascorbic Acid in Aqueous Solution

TitleDegradation of Ascorbic Acid in Aqueous Solution
Authors
Keywords2-furoic acid
3-hydroxy-2-pyrone
Ascorbic acid
Degradation
Dehydroascorbic acid
Furfural
HPLC
Issue Date1998
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/jafcau
Citation
Journal Of Agricultural And Food Chemistry, 1998, v. 46 n. 12, p. 5078-5082 How to Cite?
AbstractAn HPLC method, for the simultaneous determination of the degradation products of ascorbic acid, was employed to investigate the degradation of ascorbic acid in aqueous solution at different pH values. After ascorbic acid aqueous solutions were heated at 100 °C for 2 h, four main degradation products, furfural, 2-furoic acid, 3-hydroxy-2-pyrone, and an unidentified compound, were separated and determined. In an acid aqueous solution, ascorbic acid was converted to 2-furoic acid and 3-hydroxy-2-pyrone via dehydroascorbic acid under aerobic conditions, whereas under anaerobic conditions, ascorbic acid degraded to furfural. Low pH conditions favored the formation of furfural, 2-furoic acid, and 3-hydroxy-2-pyrone; at extremely low pH (i.e., pH 1), the formation of furfural dominated. In an alkaline aqueous solution, the unknown compound became the main degradation product of ascorbic acid; at pH 10, only very small amounts of furfural and 3-hydroxy-2-pyrone with no 2-furoic acid were detected. Our results suggest that, in a hydrogen-ion-catalyzed environment, the anaerobic degradation of ascorbic acid to furfural is the main degradation pathway in an aqueous solution.
Persistent Identifierhttp://hdl.handle.net/10722/68742
ISSN
2015 Impact Factor: 2.857
2015 SCImago Journal Rankings: 1.246
References

 

DC FieldValueLanguage
dc.contributor.authorYuan, JPen_HK
dc.contributor.authorChen, Fen_HK
dc.date.accessioned2010-09-06T06:07:14Z-
dc.date.available2010-09-06T06:07:14Z-
dc.date.issued1998en_HK
dc.identifier.citationJournal Of Agricultural And Food Chemistry, 1998, v. 46 n. 12, p. 5078-5082en_HK
dc.identifier.issn0021-8561en_HK
dc.identifier.urihttp://hdl.handle.net/10722/68742-
dc.description.abstractAn HPLC method, for the simultaneous determination of the degradation products of ascorbic acid, was employed to investigate the degradation of ascorbic acid in aqueous solution at different pH values. After ascorbic acid aqueous solutions were heated at 100 °C for 2 h, four main degradation products, furfural, 2-furoic acid, 3-hydroxy-2-pyrone, and an unidentified compound, were separated and determined. In an acid aqueous solution, ascorbic acid was converted to 2-furoic acid and 3-hydroxy-2-pyrone via dehydroascorbic acid under aerobic conditions, whereas under anaerobic conditions, ascorbic acid degraded to furfural. Low pH conditions favored the formation of furfural, 2-furoic acid, and 3-hydroxy-2-pyrone; at extremely low pH (i.e., pH 1), the formation of furfural dominated. In an alkaline aqueous solution, the unknown compound became the main degradation product of ascorbic acid; at pH 10, only very small amounts of furfural and 3-hydroxy-2-pyrone with no 2-furoic acid were detected. Our results suggest that, in a hydrogen-ion-catalyzed environment, the anaerobic degradation of ascorbic acid to furfural is the main degradation pathway in an aqueous solution.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.subject2-furoic aciden_HK
dc.subject3-hydroxy-2-pyroneen_HK
dc.subjectAscorbic aciden_HK
dc.subjectDegradationen_HK
dc.subjectDehydroascorbic aciden_HK
dc.subjectFurfuralen_HK
dc.subjectHPLCen_HK
dc.titleDegradation of Ascorbic Acid in Aqueous Solutionen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-8561&volume=46&issue=12&spage=5078&epage=5082&date=1998&atitle=Degradation+of+ascorbic+acid+in+aqueous+solutionen_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-s2.0-0000019244en_HK
dc.identifier.hkuros45449en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0000019244&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume46en_HK
dc.identifier.issue12en_HK
dc.identifier.spage5078en_HK
dc.identifier.epage5082en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridYuan, JP=7403401467en_HK
dc.identifier.scopusauthoridChen, F=7404907980en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats