Structural characterization and systemic hypoglycemic effects of a new high-molecular-weight α-glucan from Grifola frondosa - Wei Zhong; Juan Wang; Yu Ding; Longhua Huang; Huixiang Tian; Qinzhao Ruan; Xiangmin Li; Yuanchao Liu; Tianqiao Yong; Shaodan Chen; Nan Miao; Huiyang Guo; et al. (Carbohydrate Polymers, 2026)