Metabolite Profiling of Grape: Flavonols and Anthocyanins

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• 作者：Fulvio Mattivi ; Raffaele Guzzon ; Urska Vrhovsek ; Marco Stefanini ; Riccardo Velasco
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2006
• 出版时间：October 4, 2006
• 年：2006
• 卷：54
• 期：20
• 页码：7692 - 7702
• 全文大小：284K
• 年卷期：v.54,no.20(October 4, 2006)
• ISSN：1520-5118

文摘

Flavonols are products of the flavonoid biosynthetic pathway, which also give rise to anthocyaninsand condensed tannins in grapes. We investigated their presence in the berry skins of 91 grapevarieties (Vitis vinifera L.), in order to produce a classification based on the flavonol profile. Thepresence of laricitrin 3-O-galactoside and syringetin 3-O-galactoside in red grapes is reported herefor the first time. In red grapes, the main flavonol was quercetin (mean = 43.99%), followed by myricetin(36.81%), kaempferol (6.43%), laricitrin (5.65%), isorhamnetin (3.89%), and syringetin (3.22%). Inwhite grapes, the main flavonol was quercetin (mean = 81.35%), followed by kaempferol (16.91%)and isorhamnetin (1.74%). The delphinidin-like flavonols myricetin, laricitrin, and syringetin weremissing in all white varieties, indicating that the enzyme flavonoid 3',5'-hydroxylase is not expressedin white grape varieties. The pattern of expression of flavonols and anthocyanins in red grapes wascompared, in order to gain information on the substrate specificity of enzymes involved in flavonoidbiosynthesis.