Precise structural characterization and therapeutic potential of a glucomannan polysaccharide from dried rhizome of plant Bletilla striata against ulcerative colitis - Huidan Hou; Lifeng Li; Tahidul Islam; Jingchun Shi; Mengyang Hou; Siliang Jiang; Xiaohan Zhao; Chengyuan Lin; Quanbin Han; Lin Zhu; Zhaoxiang Bian (Carbohydrate Polymers, 2026)