Using three wine grape varieties, including Merlot Cabernet Sauvignon, and Chardonnay, planted under vertical independent Long-stem training system in Yuquanying farm, Ningxia Province, as test materials, the effect of different fruit set heights on the components and concentrations of aroma substances in wine were studied. The results showed that the total amount of aroma compounds in wine brewed by Merlot, Cabernet Sauvignon and Chardonnay with different fruit set heights in order was upper fruit set area>middle fruit set area>lower fruit set area, and the relative contents of main aroma compounds including esters and alcohols in order were upper fruit set area>middle fruit set area>lower fruit set area. Based on the principal component analysis of aroma components, the characteristic aroma components of wine with different fruit set heights were determined. This training system should be improved to keep the fruit set heights in a uniform height in order to obtain high-quality wine with the same aroma content.
WEI Shichao, LIU Shiqiu, HU Fan, ZHANG Zhenwen.
Effect of different fruit set heights on wine aroma compounds under the vertical independent Long-stem training system[J]. China Brewing, 2021, 40(6): 46-51 https://doi.org/10.11882/j.issn.0254-5071.2021.06.010