1. College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, Shaanxi 710119, P. R. China
2. National Research & Development Center of Apple Processing Technology, Shaanxi Normal University, Xi’an, Shaanxi 710119, P. R. China
3. Engineering Research Center of High Value Utilization of Western China Fruit Resources, Ministry of Education, Shaanxi Normal University, Xi’an, Shaanxi 710119, P. R. China