Optimization of the processing technology of rehmannia glutinosa nine steamed and nine prepared by combining uniform design methodwith AHP entropy weighted topsis mixed weighting method
Objective Calculate weight coefficients based on AHP entropy weight TOPSIS mixed weighting method,de-sign experimental plans using uniform design method,and optimize the processing technology of rehmannia glutinosa nine steamed and nine processed.Methods Three factors were investigated for the processing technology of nine steaming and nine making rehmannia glutinosa,including the time of moistening rehmannia glutinosa,the time of steaming reh-mannia glutinosa,and the number of times of steaming rehmannia glutinosa.The content of five indicator components in rehmannia glutinosa,including catalpol,rehmannia glycoside D,rehmannia glycoside A,piloside glycoside,and isopi-loside glycoside,was used as the evaluation index for the processing technology of nine steaming and nine making reh-mannia glutinosa.The mixed weighting method,which combines subjective assignment of AHP method and entropy weight TOPSIS evaluation method,is used to determine the weight coefficients of five indicator components in the nine steamed and nine prepared rehmannia glutinosa.The U8*(84)uniform experimental design method is used to optimize the processing technology of the nine steamed and nine prepared rehmannia glutinosa.Results The optimized process for preparing rehmannia glutinosa with nine steaming and nine processing methods includes a time of 1 hour for moiste-ning rehmannia glutinosa,2 hours for steaming rehmannia glutinosa,and 9 times for steaming rehmannia glutinosa.The average comprehensive score of the validation test for the processing technology of three batches of rehmannia glutinosa with nine steaming and nine preparation is 95.30 points(RSD=0.17％,n=3).Conclusion The optimized process-ing technology of nine steamed and nine processed rehmannia glutinosa is stable and feasible,providing reference and basis for the standardization and production application of the processing technology of nine steamed and nine processed rehmannia glutinosa.
Rehmannia glutinosaNine steamed and nine madeAHP entropy weight TOPSIS mixed weighting methodUniform design method
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