Extraction, purification, structural characterization, biological activity, structure-activity relationship, and applications of polysaccharides derived from Polygonatum sibiricum: A review - Jiasu Wu; Chang Tan; Hongye Li; Siya Wang; Xingkui Wang; Shan Wang; Chong Ning; Weixuan Li; Chongting Guo (Trends in Food Science & Technology, 2025)