3Jeanelle Boyer, Rui Hai Liu. Apple phytochemicals and their health benefits [ J ]. Nutrition Journal, 2004,3:5.
4Vayndorf EM, et al. Whole apple extracts increase lifespan, healthspan and resistance to stress in Caenorhabditis elegans [ J]. Journal of Functional Foods, 2013,5 ( 3 ) : 1236-1243.