关键词: 白及（Bletilla striata）, 冻干片, 含量测定, 质量标准

Abstract: Based on the medicinal materials of Bletilla striata from 12 producing areas, the quality standards for its freeze-dried tablets were explored. By identifying the general physical and chemical properties of Bletilla striata freeze-dried tablets from different origins, and determining the total polysaccharide content, water content, total ash content, sulfur dioxide residue, the content of [4 -（β-D-glucopyranoxy） benzyl] -2-isobutyl malate Militarine and the content of extracts, the quality of Bletilla striata freeze-dried tablets was evaluated. The results showed that the total polysaccharide content of Bletilla striata freeze-dried tablets from 12 producing areas was 28.2%~50.9%, and the content of Militarine was 5.32%~10.73%. The total polysaccharide content, water content, total ash content, extract content, and Militarine content in Bletilla striata freeze-dried tablets complied with the standards of the “Pharmacopoeia of the People’s Republic of China： Four Parts”（2015 edition）.

Key words: Bletilla striata, freeze-dried tablets, content determination, quality standard