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Development of Monomeric and Polymeric Flavan-3-ols in Grape Seeds During Grape Berry Development

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年20
Page:
16-20
Research Field:
Publishing date:

Info

Title:
Development of Monomeric and Polymeric Flavan-3-ols in Grape Seeds During Grape Berry Development
Author(s):
DING Yan1; 2; HARRISON Roland3; WANG Chaoping1; HAN Xiaomei1; WU Xinying1; 2
(1.Shandong Academy of Grape,Jinan,Shandong 250100;2.Shandong Engineering Technology Research Centre of Viticulture and Grape Intensive Processing,Jinan,Shandong 250100;3.Department of Wine,Food and Molecular Biosciences,Lincoln University,Canterbury,New Zealand 7647)
Keywords:
grape seed; berry development; flavan-3-ol; proanthocyanidin
PACS:
-
DOI:
10.11937/bfyy.20194771
Abstract:
The ‘Pinot Noir’ wine grapes were used as test materials,the development of monomeric and polymeric flavan-3-ols in grape seeds was studied by HPLC,with a view to provide scientific basis for optimizing the grape harvesting period and brewing process.The results showed that the isolated flavan-3-ol monomers consisted of (+)-catechin (CAT),(-)-epicatechin (EC) and (-)-epicatechin-3-O-gallate (ECG).The proportion of (+)-catechin was relatively higher at veraison and there before,while after veraison,the proportion of (-)-epicatechin rised up to the higher relative to other flavan-3-ol monomers.The amounts of monomeric and polymeric flavan-3-ols reached maximum at different stages,in which monomers reached maximal near veraison,while the highest amount of proanthocyanidins occurred approximately one week before veraison.The terminal and extension subunits of proanthocyanidins in ‘Pinot Noir’ grape seeds were all mainly composed of CAT,EC and ECG.The amounts of terminal and extension subunits also reached maximum at different stages,in which terminal reached maximal two weeks after veraison,while the highest amount of proanthocyanidins occurred approximately one week before veraison.There was an overall decline in the mean degree of polymerization (mDP) of proanthocyanidins through berry development.

References:

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Last Update: 2020-12-30