厚朴质量的研究

目的 :摸清影响厚朴药材质量的要素 ,为厚朴药材质量评价、遗传改良、产区区划提供理论依据。方法 :采集浙、闽、川、桂、湘、赣、鄂等厚朴主产区 (7省 11县 )产地药材样品 82个 ,以及上述厚朴主产区种源 ,在浙江景宁试验林中的厚朴药材样品 39个 ,共 12 1个厚朴药材样品。用高效液相色谱法 (HPLC)测定厚朴酚类含量。结果 :基本摸清了影响厚朴药材质量的因素和要素。结论 :厚朴质量受种源、叶形、胸径、树高、冠幅、树龄、皮厚、粉末颜色、油性、易磨性、树皮类型、采样部位等多种因素的影响。其中 ,种源、叶形、粉末颜色、皮厚、胸径是对厚朴质量影响最大的要素 ,今后厚朴药材质量评价、遗传改良应充分考虑这些要素。

A Study on Bark Quality of Magnolia officinalis Rehd.et Wils.

Objective:To understand the main factors influencing the bark quality of Magnolia officinalis so as to theoretically establish a basis for quality assessment,genetic improvement and layout of bark producing areas. Method:Eighty two samples from the main bark producing areas(11 counties of 7 provinces such as Zhejiang,Fujian,Sichuan,Hunan,Guangxi,Jiangxi and Hubei)were collected.Totally there were 121 samples,including 39 from the trial stand located in Jingning of Zhejiang the obtained out of the seeds from the bark producing areas mentioned above.HPLC was used in the analysis of phenols contained in the bark of Magnolia officinalis .Result:The main factors influencing the bark quality have been made clear. Conclusion:The quality is affected by provenance,leaf shape,DBH,tree height,crown size,age,bark thickness color of bark powder, oiliness, grounding nature, bark type, position of sampling, etc., of which provenance, leaf shape, powder color, bark thickness and DBH are the most influential factors. These factors should be fully considered when making quality assessment and genetic improvement of the bark of Magnolia officinalis .