1. Vitamin D Research Institute, College of Bioscience and Bioengineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, China
2. College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
3. Shaanxi Key Laboratory of Bioresource, College of Bioscience and Bioengineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China