An oligosaccharide-marker approach to quantify specific polysaccharides in herbal formula by LC-qTOF-MS: Danggui Buxue Tang, a case study

Lifeng Li, Tin-Long Wong, Jixia Zhang, Lishuang Zhou, Su‐Ping Bai, Hau-Yee Fung, Huiyuan Cheng, Quanwei Zhang, Hongming Zheng, Wan-Rong Bao, Dik‐Lung Ma, Chung‐Hang Leung, Ge Zhang, Zhaoxiang Bian, Aiping Lyu, Quan‐Bin Han