Study On Initial Processing Method And Quality Evaluation Of Astragali Radix

Based on the investigation of the development status of astragalus membranaceus medicinal in wushan area of gansu province.Found the astragali radix origin pretreating method mainly "kneading",without the use of other methods,so the acquisition of locally grown 10 batches of astragali radix,with astragali radix origin pretreating method "kneading" origin in raw processing.Each batch of astragali radix was divided into non-kneading group,kneading a group,kneading the group of two times,kneading the group of three times.In the process of kneading,to ensure the kneading strength,the weight of the pressure plate on each astragali radix is equal to manual kneading pressure,and the board is pushed back and forth for 3 minutes to complete the kneading operation.According to the original processing habit,the astragalus membranaceus medicinal are placed in the shade to dry for two days after each kneading,to facilitate the evaporation of water.The four groups of astragali radix were different with different kneading times,and the other operations were the same.Through the use of Chinese medicine identification,stoichiometry and other related knowledge,systematic scientific research on the origin of astragali radix.A Study on the effect of "kneading" on the appearance and microstructure of astragalus.According to the study,the appearance and character of astragalus medicinal materials have disappeared in a straight state with the increase of "kneading".The texture of medicinal materials is flexible and not easily broken.After the "kneading" operation,the root of radix astragalus root was badly damaged,and the surface dust was significantly reduced,and the color of the cambium was obviously deepened from the cross section of the herb.Aspects of microstructure,the production of astragalus medicinal through paraffin section observation found that accompany with the increase of number of "kneading" astragalus medicinal cambium and bolt lining cells and organization structure is seriously damaged,intercellular space greatens,arranged disorder,and in the cell cytoplasm color becomes shallow or disappear.Through the experimental research proved that the origin of pretreating "kneading" operation through the analysis of the effect of external mechanical forces destroy astragalus medicinal cambium and phelloderm and neighboring cells and organizational structure to influence the quality of astragalus medicinal.B Multi-index evaluation "kneading" impact on the quality of radix astragali medicinal materials researchBy measuring indicators affecting the quality of astragalus medicinal composition content,using the AHP method and entropy weight method to determine the index weight,and by using weighted comprehensive formula of maximum avoid the limitations of the two,both the advantages of two methods.Based on this,a TOPSIS evaluation model was established to evaluate the quality of radix astragali.The results showed that the quality of astragalus was superior to that of the unrubbed radix astragali,and it was better to knead twice.It is indicated that the "kneading" operation can positively affect the quality of astragalus medicinal materials,which is in line with the experience cognition of the plant farmers of astragalus C Study on the effect of accelerated experiment on the quality of radix astragali.By accelerating the experiment,we're looking at the changes in the various parameters of the storage process of the traditional Chinese medicine in the extreme environment,and it's a scientific Angle to analyze the change in the elements in the extreme environment.It was found that,except for that total ash,the content of the indicator component of the astragalus herb which was "knead" in the high-temperature high-wet environment was higher than that of the non-" kneaded " astragalus medicinal material,indicating that the " kneading " operation of the raw material not only affect the quality of the astragalus root,but also affected the retention of the indicator component of the astragalus root in extreme environment.D The use of NIRDRS technology to quickly identify the raw astragalus medicinal materialsBy comparing the classification results of PCA and OPLS-DA model,found OPLS-DA model of scattered points in the diagram each origin raw astragalus medicinal gathered classified clearly,not knead with three other group can achieve more perfect classification identification,the effect of OPLS-DA model can achieve four groups of rapid identification of astragalus medicinal.This section from the side indicating origin raw "knaeding" operation can cause chemical changes in astragalus medicinal,experimental research results for the standard astragalus medicinal origin pretreating methods provide a train of thought,and for the quality of raw astragalus medicinal regions to identify research provide a scientific theory basis.