Optimization of Frosting Process of Semen Euphorbiae with Orthogonal Design and Comparison Analysis of Fatty Oil Components Before and After Frosting
Objective:To optimize the best mechanical compression frosting process of Semen Euphorbiae,clarify its process parameters,and analyze the changes of fatty oil of Semen Euphorbiae before and after frosting.Methods:The appearance characteristics and fatty oil content of Semen Euphorbiae Pulveratum in the 2020 edition of Pharmacopoeia of the People's Republic of China were used as evaluation indexes.The L9(34)orthogonal test method was used to optimize the frosting temperature,compression time and frosting pressure of the mechanical compression frosting process of Semen Euphorbiae to determine the best mechanical compression frosting process of Semen Euphorbiae.The fatty oils before and after frosting were analyzed by gas chromatography-mass spectrometry(GC-MS).Results:The optimum mechanical compression frosting process conditions were as follows:the Semen Euphorbiae seed kernels were ground into mud(particle size of about 40-60 mesh),pressed once at 50 ℃ and 50 MPa pressure for 10 min.A total of 14 common fatty acid methyl esters were detected in the fatty oil of raw and frosted products of Semen Euphorbiae.The composition of fatty acid components in the fatty oil before and after frosting was basically the same,with slight differences in relative content,but little changes.Conclusion:The optimized mechanical compression frosting process of Semen Euphorbiae is stable,reliable and simple,which can provide reference for the production and quality control of Semen Euphorbiae Pulveratum decoction pieces.
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