“…Shaanxi is one of the main production areas; a vast planting area, high annual production and the export of apple concentrated juice lead the nation. Polyphenols are important components of apple because of their antioxidation (Biedrzycka & Amarowicz, ; He & Liu, ; Rupasinghe et al ., ), antiviral (Chanwitheesuk et al ., ), antigenic (Sul et al ., ), antimicrobial (Jung et al ., ), (Weichselbaum et al ., ) and anticancer properties and is also used in the treatment for cardiovascular diseases (Jedrychowski et al ., ; Shao et al ., ). Different tissue types have different compositions of polyphenols, and the peel comprises only a small percentage of the entire fruit weight.…”