1. College of Enology, Northwest A&F University, Yangling 712100, China
2. College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
3. Shaanxi Engineering Research Center for Viti-viniculture, Yangling 712100, China
4. Shaanxi Key Laboratory for Viti-viniculture, Yangling 712100, China