Differences Analysis of Different Parts of Cinnamomi Ramulus Based on Chemical Pattern Recognition and Entropy TOPSIS Method
The UPLC fingerprints of Cinnamomi Ramulus and its different parts were established,and the differences of Cinnamomi Ramulus and its different parts were investigated by similarity evaluation,chemical pattern recognition and entropy TOPSIS method.The results showed that six common peaks were determined and five components were identified in the fingerprints of Cinnamomi Ramulus,xylem and phloem.The similarity values of Cinnamomi Ramulus,xylem and phloem in ten batches were all greater than 0.990.The results of variance analysis showed that there were significant differences in six components between xylem and phloem.Cluster analysis and principal component analysis showed that the chemical compositions of Cinnamomi Ramulus were more similar to those of phloem than xylem.The results of orthogonal partial least square discriminant analysis could cluster Cinnamomi Ramulus and its different parts into three categories,which were Cinnamomi Ramulus,xylem and phloem.And cinnamaldehyde was screened as the main variable causing the difference of different parts of Cinnamomi Ramulus.The results of entropy TOPSIS method showed that the Euclid approach degree(Ci)of Cinnamomi Ramulus,xylem and phloem were 0.458,0.249 and 0.577,respectively.The established method can reflect the differences of Cinnamomi Ramulus,and provide a reference for the quality control of Cinnamomi Ramulus.
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