Domingues Neto Francisco José, Tecchio Marco Antonio, Cunha Silvia Regina, Monteiro Harleson Sidney Almeida, Figueira Ricardo, Nunes Aline, Rodrigues João Domingos, Ono Elizabeth Orika, Moura-Furlan Mara Fernandes, Lima Giuseppina Pace Pereira
Sao Paulo State University (UNESP), School of Agricultural and Veterinary Sciences, Jaboticabal 14884-900, SP, Brazil.
Sao Paulo State University (UNESP), School of Agricultural Sciences, Botucatu 18618-689, SP, Brazil.
Plants (Basel). 2025 Jun 10;14(12):1766. doi: 10.3390/plants14121766.
Grapes are rich in bioactive compounds, including phenolics and anthocyanins, which exhibit antioxidant properties and offer potential health benefits. The accumulation of these compounds is influenced by agronomic practices, particularly rootstock selection and training systems. This study evaluated the effects of different rootstocks ('IAC 766 Campinas' and '106-8 Mgt') and training systems (low and high vertical shoot positioning) on the polyphenolic composition and antioxidant activity in the skins and pulps of and Brazilian hybrid grapes. The analyses included total phenolics, total flavonoids, monomeric anthocyanins, and antioxidant activity (DPPH and FRAP assays), as well as the individual polyphenolic profile in grape skins. The results indicated that both rootstock and training system significantly affected the accumulation of bioactive compounds and antioxidant capacity. Grapes trained on high trellises exhibited higher concentrations of bioactive compounds, while those from low trellises showed an enhanced phenolic composition. Among varieties, 'Bordô' had the highest bioactive compounds, while 'Isabel' stood out for specific phenolic acids. In hybrid cultivars, the '106-8 Mgt' rootstock boosted antioxidant compounds, while 'IAC 766 Campinas' enhanced flavonoid, anthocyanin, and phenolic acid levels. Malvidin-3-O-glucoside emerged as the predominant anthocyanin. These findings underscore the importance of optimizing rootstock selection and training systems to enhance the phenolic composition and antioxidant potential of grapes.
葡萄富含生物活性化合物，包括酚类和花青素，这些化合物具有抗氧化特性，并对健康有潜在益处。这些化合物的积累受农艺措施影响，特别是砧木选择和整形方式。本研究评估了不同砧木（‘IAC 766坎皮纳斯’和‘106 - 8 Mgt’）和整形方式（低和高垂直单干双臂）对 和巴西杂交葡萄果皮和果肉中多酚组成及抗氧化活性的影响。分析包括总酚、总黄酮、单体花青素和抗氧化活性（DPPH和FRAP测定），以及葡萄皮中单个多酚的谱图。结果表明，砧木和整形方式均显著影响生物活性化合物的积累和抗氧化能力。高篱架整形的葡萄生物活性化合物浓度较高，而低篱架整形的葡萄酚类组成有所增强。在 品种中，‘博尔朵’生物活性化合物含量最高，而‘伊莎贝尔’则以特定酚酸突出。在杂交品种中，‘106 - 8 Mgt’砧木提高了抗氧化化合物含量，而‘IAC 766坎皮纳斯’增强了黄酮类化合物、花青素和酚酸水平。矢车菊素 - 3 - O - 葡萄糖苷是主要的花青素。这些发现强调了优化砧木选择和整形方式以提高葡萄酚类组成和抗氧化潜力的重要性。
