Optimization of extraction of polysaccharides from Suaeda salsa (L.) Pall. by ultrasonic: characterization, purification and antioxidant assessmentJianxin Fu, Jiawei Shao, Meng Wang, Guixiang Zhang and Yishan FangE3S Web Conf., 145 (2020) 01025DOI: https://doi.org/10.1051/e3sconf/202014501025