| Title: | Changes in global aroma profiles of Cabernet Sauvignon in response to cluster thinning |
| Author(s): | Wang Y; He YN; He L; He F; Chen W; Duan CQ; Wang J; |
| Address: | "Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China. College of Enology, Northwest A&F University, Yangling 712100, Shanxi, China. CITIC Guoan Wine Co. Ltd., Manas 832200 Xinjiang, China. Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China. Electronic address: jun_wang@cau.edu.cn" |
| DOI: | 10.1016/j.foodres.2019.03.061 |
| ISSN/ISBN: | 1873-7145 (Electronic) 0963-9969 (Linking) |
| Abstract: | "Cluster thinning (CT) is a common practice to prevent overcropping in viticulture. CT affects vine balance between vegetative and productive growth and further modifies grape composition. This study investigated the effects of cluster thinning treatments applied at pea-size stage (CT-AF) and the onset of veraison (CT-V), respectively, on volatile compounds of Cabernet Sauvignon in two seasons (2013-2014). The experimental vineyard was located in the north-west of China with semi-arid and monsoon climate. CT exhibited limited effects on the evolutions of volatile compounds. CT-AF exhibited an inhibition on 6-methyl-5-heptene-2-one accumulation. There were no differences in terpene concentrations between CT-treated and control grapes regardless of CT time. Regarding C(6)/C(9) compounds and their derivatives, CT-AF decreased nonanal concentration whilst CT-V increased (Z)-3-hexen-1-ol concentration. Additionally, there were increases in nonanal, (E)-2-hexen-1-ol, (Z)-2-hexen-1-ol and (Z)-3-hexen-1-ol concentrations in grapes with delayed CT. Among benzene derivatives, earlier CT resulted in lower phenol concentrations" |
| Keywords: | Benzene Derivatives/analysis Cluster Analysis Fruit/chemistry Norisoprenoids/analysis Odorants/*analysis Terpenes/analysis Vitis/*chemistry Volatile Organic Compounds/analysis Wine/*analysis Benzene derivatives C(6)/C(9) compounds and their derivatives Ca; |
| Notes: | "MedlineWang, Yu He, Yan-Nan He, Lei He, Fei Chen, Wu Duan, Chang-Qing Wang, Jun eng Research Support, Non-U.S. Gov't Canada 2019/06/24 Food Res Int. 2019 Aug; 122:56-65. doi: 10.1016/j.foodres.2019.03.061. Epub 2019 Mar 28" |
