Oxidative stress is a key inducer of chronic diseases, and apple polyphenols exhibit significant antioxidant potential. This study systematically analyzed polyphenol accumulation characteristics and antioxidant activity of four apple cultivars (Qincui, Jiuyue Qiji, Orin, Ruixue) using a multi-lev...
The sample to be tested was fully ground into powder in the grinder, 50 mg of the sample was freeze-dried, 1000 μL of the extraction solution containing the inner target was added (methanol:acetonitrile:water, 2:2:1, v/v/v, internal standard concentration 20 mg/L) and vortex mixed for 30 s; then ...