Gómez-Plaza Encarna, Bautista-Ortín Ana B, Ruiz-García Yolanda, Fernández-Fernández José I, Gil-Muñoz Rocío
Food Science and Technology Department, Faculty of Veterinary Science, University of Murcia, Campus de Espinardo, 30071, Murcia, Spain.
Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario, Ctra. La Alberca s/n, 30150, Murcia, Spain.
J Sci Food Agric. 2017 Feb;97(3):977-983. doi: 10.1002/jsfa.7823. Epub 2016 Jun 30.
The effect of the application of benzothiadiazole (BTH) and methyl jasmonate (MeJ) at veraison on the phenolic composition of grapes from three varieties (Monastrell, Syrah and Merlot) was studied during the ripening period, using HPLC techniques to measure flavonols, anthocyanins and tannins.
The effects of the treatments differed in the three varieties, and the maximum concentration of phenolic compounds was not always reached at the end of the ripening period but some days before harvest. At the end of ripening both treated Syrah grapes only differed from control grapes in the flavonol concentration, whereas MeJ-treated Merlot grapes presented higher anthocyanin and skin tannin contents than the control and BTH-treated grapes. Only the anthocyanin content was significantly higher in treated Monastrell grapes at the moment of harvest.
The results indicate that the moment of elicitor treatment should be more studied since differences between treated and control grapes were, in general greater several days before harvest in all three varieties. © 2016 Society of Chemical Industry.
在葡萄成熟期间，研究了在转色期施用苯并噻二唑（BTH）和茉莉酸甲酯（MeJ）对三个品种（慕合怀特、西拉和梅洛）葡萄酚类成分的影响，采用高效液相色谱技术测定黄酮醇、花青素和单宁。
处理效果在三个品种中有所不同，酚类化合物的最大浓度并非总是在成熟期结束时达到，而是在收获前几天。在成熟末期，仅处理过的西拉葡萄在黄酮醇浓度上与对照葡萄不同，而用MeJ处理的梅洛葡萄的花青素和果皮单宁含量高于对照和用BTH处理的葡萄。在收获时，仅处理过的慕合怀特葡萄的花青素含量显著更高。
结果表明，应更多地研究诱导剂处理的时机，因为在所有三个品种中，处理过的葡萄与对照葡萄之间的差异通常在收获前几天更大。© 2016化学工业协会。
