Optimization of Enzymatic-assisted Extraction of Polysaccharides from Roxburgh Rose Pomace and its Antioxidant ActivityXiaoli Zhou, Guangxu Zhu, Yansheng Yang, Bin Du and Dong LinE3S Web Conf., 78 (2019) 02014DOI: https://doi.org/10.1051/e3sconf/20197802014