| Ripening-Induced Changes in Grape Skin Proanthocyanidins Modify Their Interaction with Cell Walls. | |
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MedLine Citation:
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PMID: 21351801 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Proanthocyanidins were isolated from the skins of Cabernet Sauvignon grapes at different stages of grape development in order to study the effect of proanthocyanidin modification on the interaction with grape cell wall material. After veraison, the degree of proanthocyanidin polymerization increased, and thereafter was variable between 24 and 33 subunits as ripening progressed. Affinity of skin cell wall material for proanthocyanidin decreased with proanthocyanidin ripeness following veraison. A significant negative relationship (R(2) = 0.93) was found for average proanthocyanidin molecular mass and the proportion of high molecular mass proanthocyanidin adsorbed by skin cell wall material. This indicated that as proanthocyanidin polymerization increased, the affinity of a component of high molecular mass proanthocyanidins for skin cell wall material declined. This phenomenon was only associated with skin proanthocyanidins from colored grapes, as high molecular mass proanthocyanidins of equivalent subunit composition from colorless mutant Cabernet Sauvignon grapes had a higher affinity for skin cell wall material. |
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Authors:
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Keren A Bindon; James A Kennedy |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-2-25 |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: - ISSN: 1520-5118 ISO Abbreviation: - Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-2-28 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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The Australian Wine Research Institute , P.O. Box 197, Glen Osmond, SA, 5064, Australia. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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