不同产地当归饮片的鉴定学及质量研究

Abstract

目的 对不同产地的当归饮片进行鉴别,并对其质量进行比较.方法 分别从甘肃岷县、漳县、渭源以及云南鹤庆等四地的中药材有限公司处收集不同产地当归饮片作为研究标本,对其性状特征、显微特征、理化特征等进行比较.结果 不同产地当归整体近于圆柱状,表面凹凸不平,并有纵向生长的褶皱和横向长皮孔样突起.当归的横断面存在点状分泌腔.味微苦,甘辛.其中甘肃岷县所产的当归表面为黄棕色,颜色相对较深,断面呈黄白色,有明显的点状分泌腔,且香气十分浓郁,油室最多,其木部导管排列散乱无序;韧皮的薄壁细胞呈纺锤形,壁稍厚,表面出现极微细斜向交错的纹理,质量最优.在理化性质的比较上,甘肃岷县、漳县、渭源、云南鹤庆所产的当归的含水量、醇溶出物含量、挥发油的含量也均以甘肃岷县最高,渭源最低.结论 甘肃岷县所产的当归质量最优,掌握其与其他产地当归各项特性上的差异,有利于采购以及后续医疗用途中当归的合理选择.

Objective To identify the different habitats of angelica pieces and compare their quality. Methods Traits from Min county, Weiyuan, Zhang county in Gansu, and Heqing in Yunnan and other places of the four Chinese herbal medicine limited collection of angelica sinensis from different habitats were selected as research sample, its characters, microscopic characteristics, physical and chemical characteristics were compared. Results Angelica sinensis from different habitats was nearly cylindrical, uneven surface, and the longitudinal growth of the folds and transverse lenticel like protrusions. There was a punctate secretory cavity in the transverse section of angelica sinensis, camsing bitter. The surface of angelica sinensis produced in Min county, Gansuis yellow brown, the color was relatively deep, white section, had obvious punctate secretory cavity and the aroma was very strong, oil room at most, the arrangement of xylem ducts was disordered. The phloem parenchyma cells were spindle shaped, slightly thicker wall, the texture of the surface was very fine and oblique, and the quality was the best. In comparison of physical and chemical properties of angelica, Min county, Weiyuan Zhang county in Gansu, Heqing in Yunnan produced water and ethanol soluble extracts content, the content of volatile oil in Gansu were highest in Min county, lowest in Weiyuan. Conclusion The quality of angelica sinensis produced in Min county of Gansu province is the best, and it can be used as a reasonable choice for purchasing andsubsequent use of angelica sinensis.