College of Enology, Northwest A&F University, Yangling 712100, Shaanxi, China.
Shaanxi Engineering Research Center for Viti-Viniculture, Yangling 712100, Shaanxi, China.
Molecules. 2016 Oct 12;21(10):1354. doi: 10.3390/molecules21101354.
The anthocyanin composition, fatty acids, and volatile aromas are important for Cabernet Sauvignon grape quality. This study evaluated the effect of exogenous abscisic acid (ABA) and methyl jasmonate (MeJA) on the anthocyanin composition, fatty acids, lipoxygenase activity, and the volatile compounds of Cabernet Sauvignon grape berries. Exogenous ABA and MeJA improved the content of total anthocyanins (TAC) and individual anthocyanins. Lipoxygenase (LOX) activity also increased after treatment. Furthermore, 16 fatty acids were detected. The linoleic acid concentration gradually increased with ABA concentration. The fatty acid content decreased with increasing MeJA concentration and then increased again, with the exception of linoleic acid. After exogenous ABA and MeJA treatment, the C6 aroma content increased significantly. Interestingly, the exogenous ABA and MeJA treatments improved mainly the content of 1-hexanol, hexanal, and 2-heptanol. These results provide insight into the effect of plant hormones on wine grapes, which is useful for grape quality improvement.
花色苷组成、脂肪酸和挥发性香气物质对赤霞珠葡萄的品质很重要。本研究评估了外源脱落酸（ABA）和茉莉酸甲酯（MeJA）对赤霞珠葡萄浆果花色苷组成、脂肪酸、脂氧合酶活性和挥发性化合物的影响。外源 ABA 和 MeJA 提高了总花色苷（TAC）和单体花色苷的含量。处理后脂氧合酶（LOX）活性也增加。此外，还检测到 16 种脂肪酸。随着 ABA 浓度的增加，亚油酸浓度逐渐增加。随着 MeJA 浓度的增加，脂肪酸含量先降低后升高，亚油酸除外。外源 ABA 和 MeJA 处理后，C6 香气含量显著增加。有趣的是，外源 ABA 和 MeJA 处理主要提高了 1-己醇、己醛和 2-庚醇的含量。这些结果深入了解了植物激素对酿酒葡萄的影响，这对提高葡萄品质很有用。
