| Title: | Effects of Regulated Deficit Irrigation on Amino Acid Profiles and Their Derived Volatile Compounds in Cabernet Sauvignon (Vitis vinifera L.) Grapes and Wines |
| Author(s): | Ju YL; Xu GQ; Yue XF; Zhao XF; Tu TY; Zhang JX; Fang YL; |
| Address: | "College of Enology, Northwest A & F University, Yangling 712100, China. juyanlun2016@nwsuaf.edu.cn. Ningxia Grape and Wine Research Institute, Ningxia University, Yinchuan 750000, China. xugql@163.com. College of Enology, Northwest A & F University, Yangling 712100, China. yuexiaofeng@nwsuaf.edu.cn. College of Enology, Northwest A & F University, Yangling 712100, China. zhaoxianfang@nwsuaf.edu.cn. College of Enology, Northwest A & F University, Yangling 712100, China. tuty@lzlj.com. Ningxia Grape and Wine Research Institute, Ningxia University, Yinchuan 750000, China. zhangjunxiang@126.com. College of Enology, Northwest A & F University, Yangling 712100, China. fangyulin@nwsuaf.edu.cn. Shaanxi Engineering Research Center for Viti-Viniculture, Yangling 712100, China. fangyulin@nwsuaf.edu.cn" |
| DOI: | 10.3390/molecules23081983 |
| ISSN/ISBN: | 1420-3049 (Electronic) 1420-3049 (Linking) |
| Abstract: | "Amino acid contents and their derived volatile compositions in Cabernet Sauvignon grapes and wines after regulated deficit irrigation (RDI) were investigated during the 2015 and 2016 growing seasons in Yinchuan (NingXia, China). High-performance liquid chromatography (HPLC) and gas chromatography-mass spectrometry (GC-MS) were used for amino acid and volatile compound analyses. Three RDI strategies were tested: 60% (RDI-1), 70% (RDI-2), and 80% (RDI-3) of grapevine estimated evapotranspiration (ETc), and 100% ETc was used as the control group (CK). RDI-treated vines had lower yields and berry weights with higher total soluble solids than the control treatment. RDI-1 increased proline levels in berries and wines. RDI-2 enhanced tyrosine and asparagine levels in wines. RDI-3 enhanced arginine, alanine, valine, leucine, and isoleucine levels in berries and wines. RDI-2 and RDI-3 increased the concentrations of 2-methyl-1-butyl acetate, benzaldehyde, 3-methyl-1-pentanol, and 3-methyl-1-butanol in wines. The accumulation of volatile compounds was closely related to the amino acid concentrations-especially isoleucine, valine, and leucine-in grapes. Our results showed that RDI treatments altered amino acid concentrations and their derived volatile compositions in wines" |
| Keywords: | *Agricultural Irrigation Amino Acids/*analysis Cluster Analysis Fruit/*chemistry Vitis/*chemistry Volatile Organic Compounds/*analysis Weather Wine/*analysis red wine secondary metabolism water deficit irrigation winegrape; |
| Notes: | "MedlineJu, Yan-Lun Xu, Guo-Qian Yue, Xiao-Feng Zhao, Xian-Fang Tu, Ting-Yao Zhang, Jun-Xiang Fang, Yu-Lin eng Switzerland 2018/08/12 Molecules. 2018 Aug 9; 23(8):1983. doi: 10.3390/molecules23081983" |
