Proanthocyanidin diversity in the EU 鈥楬ealthyHay鈥?sainfoin (Onobrychis viciifolia) germplasm collection

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• 作者：Elisabetta Stringano^a ; ^{e.stringano@gmail.com} ; Christine Hayot Carbonero^b ; ¹ ; Lydia M.J. Smith^b ; Ronald H. Brown^a ; Irene Mueller-Harvey^a
• 关键词：BM ; benzyl mercaptan ; C ; catechin ; Cis ; cis-flavanols (epicatechin or epigallocatechin) ; EC ; epicatechin ; EGC ; epigallocatechin ; G ; gallocatechin ; HPLC ; high performance liquid chromatography ; mDP ; mean degree of polymerisation ; PA ; proanthocyanidin ; PC
• 刊名：Phytochemistry
• 出版年：2012
• 期刊代码：85_00319422
• 类别：ch
• 出版时间：May, 2012
• 卷：77
• 期：Complete
• 页码：197-208
• 文件大小：1174 K

摘要

This study investigated 37 diverse sainfoin (Onobrychis viciifolia Scop.) accessions from the EU 鈥楬ealthyHay鈥?germplasm collection for proanthocyanidin (PA) content and composition. Accessions displayed a wide range of differences: PA contents varied from 0.57 to 2.80 g/100 g sainfoin; the mean degree of polymerisation from 12 to 84; the proportion of prodelphinidin tannins from 53%to 95%, and the proportion of trans-flavanol units from 12%to 34%. A positive correlation was found between PA contents (thiolytic versus acid-butanol degradation; P < 0.001; R² = 0.49). A negative correlation existed between PA content (thiolysis) and mDP (P < 0.05; R² = 鈭?.30), which suggested that accessions with high PA contents had smaller PA polymers. Cluster analysis revealed that European accessions clustered into two main groups: Western Europe and Eastern Europe/Asia. In addition, accessions from USA, Canada and Armenia tended to cluster together. Overall, there was broad agreement between tannin clusters and clusters that were based on morphological and agronomic characteristics.