| Ascorbic acid concentration in Cv. conference pears during fruit development and postharvest storage. | |
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MedLine Citation:
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PMID: 14705909 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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L-ascorbic acid (L-AA) concentration changes during the development of cv. Conference pears and the influence of postharvest handlings (gas condition, cooling rate, cooling duration) on L-AA breakdown were studied. L-AA concentration fluctuates in young fruits, remains stable during fruit maturation, and starts to decline 1 week before commercial harvest. The most rapid decrease in L-AA concentration was found during immediate controlled atmosphere. During short-term storage, only the gas condition was found to influence L-AA breakdown; no significant difference between gradually or immediately cooled pears was determined. Under air conditions, both cooling strategies did not differ from the L-AA breakdown in pears allowed to ripen on the tree up until 3 weeks after the optimal harvest date. During long-term storage, the cooling duration (1-3 weeks) had no effect whereas both O2 and CO2 had a significant effect on L-AA retention. After 7 months of storage, no difference was found in dehydroascorbic acid concentration; the L-AA and total L-AA concentrations, in contrast, were significantly lower in the 5% CO2 conditions. |
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Authors:
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Christine Franck; Mieke Baetens; Jeroen Lammertyn; Pieter Verboven; Mark W Davey; Bart M Nicolaï |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: 51 ISSN: 0021-8561 ISO Abbreviation: J. Agric. Food Chem. Publication Date: 2003 Jul |
Date Detail:
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Created Date: 2004-01-06 Completed Date: 2005-01-31 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: United States |
Other Details:
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Languages: eng Pagination: 4757-63 Citation Subset: IM |
Affiliation:
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Flanders Center/Laboratory of Postharvest Technology, Katholieke Universiteit Leuven, W. de Croylaan 42, 3001 Leuven, Belgium. christine.franck@agr.kuleuven.ac.be |
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| MeSH Terms | |
Descriptor/Qualifier:
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Ascorbic Acid
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analysis* Carbon Dioxide / administration & dosage Cold Temperature Dehydroascorbic Acid / analysis Food Preservation* / methods Fruit / chemistry*, growth & development* Oxygen / administration & dosage Pyrus / chemistry* Time Factors |
| Chemical | |
Reg. No./Substance:
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124-38-9/Carbon Dioxide; 490-83-5/Dehydroascorbic Acid; 50-81-7/Ascorbic Acid; 7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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