Stilbenes in the different organs of "Vitis vinifera" cv. Merlot grafted on Teleki Kober 5BB rootstock

• Gyöngyi Németh ^[1] ; Orsolya Hegyi ^[1] ; Attila Dunai ^[1] ; László Kocsis ^[1]
  1. [1] University of Pannonia

     University of Pannonia

     Hungría

     
• Localización: OENO ONE: Journal international des sciences de la vigne et du vin = International journal of vine and wine sciences, ISSN 1151-0285, Vol. 51, Nº 3, 2017, págs. 323-328
• Idioma: inglés
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• Resumen

  • Aim: To determine which of the grapevine organ is the richest in stilbene, like the t-piceid, t-resveratrol and ε-viniferin and would it be useful as by-product of viticulture for processing stilbene concentrate.

    Methods and results: Nine organs, such as cane, buds, shoot tips, inflorescences, clusters at veraison, matured berry skins, seeds and cluster stems, of Merlot grafted on Teleki Kober 5BB rootstock were collected during a year and its ethanolic extractions were analyzed via HPLC-FLD. Stilbene content of the different organs occurred in a wide range, the lowest was 3.15 mg/kg dry weight (dw) measured in the seeds and the highest 2265 mg/kg dw in the buds.

    Conclusion: The present research demonstrated that different grapevine organs contain different amount of stilbene in the vineyard. The winter-buds, the roots and the matured cane internodes of Merlot are significantly richer in t-resveratrol and t-ε-viniferin than the green vegetative and generative parts we examined in one growing year.

    Significance and impact of the study: According to our knowledge there was no stilbenes measuring in several plant organs of a vine cultivar in field study, in vineyard. Our research pointed out the pruned cane could be primary source of stilbene of the health-industry. Beside that grape root is a by-product of grapevine nursery is also rich in stilbene.