Li Wanping, Yao Heng, Chen Keqin, Ju Yanlun, Min Zhuo, Sun Xiangyu, Cheng Zhenglong, Liao Zusong, Zhang Kekun, Fang Yulin
College of Enology, Viti-Viniculture Engineering Technology Center of State Forestry and Grassland Administration, Shaanxi Engineering Research Center for Viti-Viniculture, Heyang Viti-Viniculture Station, Northwest A&F University, Yangling 712100, China.
Moutai Institute, Renhuai 564500, China.
Food Chem. 2021 Jul 30;351:129308. doi: 10.1016/j.foodchem.2021.129308. Epub 2021 Feb 18.
This study investigated the effects of foliar application of fulvic acid antitranspirant (FA-AT) on Cabernet Sauvignon (CS) and Riesling grapes and wines in a warm viticulture region of China. FA-AT controlled the contents of total soluble solids, fructose and glucose in mature grapes and alcohol in wines. FA-AT improved total phenols and flavonoids in Riesling grapes, and total tannin and individual flavanols in CS grapes and wine, while reducing total individual phenolic acids and flavonols in CS wine. Increased volatiles in CS grapes (hexyl acetate, linalool) and wine (isoamyl alcohol, 1-hexanol, 2-phenylethanol) detected by SPME-GC-MS can contribute to the fruity and floral aroma. FA-AT reduced the accumulation of anthocyanins in CS grapes and wine without an eventual reduction in the tonality of wine by sensory analysis, and improved the taste and balance of Riesling wine. Overall, FA-AT can improve the quality of grapes and wines produced in warm viticulture regions.
本研究调查了在中国温暖葡萄种植区叶面喷施黄腐酸抗蒸腾剂（FA-AT）对赤霞珠（CS）和雷司令葡萄及葡萄酒的影响。FA-AT控制了成熟葡萄中总可溶性固形物、果糖和葡萄糖的含量以及葡萄酒中的酒精含量。FA-AT提高了雷司令葡萄中的总酚和黄酮类物质，以及CS葡萄和葡萄酒中的总单宁和单体黄烷醇，同时降低了CS葡萄酒中总单体酚酸和黄酮醇的含量。通过固相微萃取-气相色谱-质谱联用（SPME-GC-MS）检测到CS葡萄（乙酸己酯、芳樟醇）和葡萄酒（异戊醇、1-己醇、2-苯乙醇）中挥发性物质的增加有助于产生果香和花香。FA-AT减少了CS葡萄和葡萄酒中花色苷的积累，感官分析表明葡萄酒的色调最终并未降低，且改善了雷司令葡萄酒的口感和平衡度。总体而言，FA-AT可以提高温暖葡萄种植区生产的葡萄和葡萄酒的品质。
