Objective: Using machine vision and electronic nose technology to identify Strychni Semen pieces and its processed products with different processing degree

and to explore correlation of its color

smell and internal components. Method: Machine vision and electronic nose was employed to obtain information of color and odor of Strychni Semen and its processed products

variation in processing process was analyzed by combining chemometric methods (principal component analysis and discriminant factor analysis).HPLC was adopted to determine contents of strychnine and brucine in pieces with different processing degree

correlation between value of color

odor and composition in different samples was analyzed by correlation analysis. Result: With deepening of processing degree of Strychni Semen

statistical analysis of samples concluded its processing color change present that hue H value became smaller

saturation S became larger

brightness V value became smaller;differentiation and identification of processed products can realize by principal component analysis (PCA) and discriminant factor analysis (DFA).Smell of different processing degree of Strychni Semen had significant different and showed some variation;with increasing of processing time

contents of strychnine and brucine in Strychni Semen decreased.Correlation analysis showed that there were significant correlation between color change (hue H and brightness V) and contents of strychnine and brucine

but correlation between odor changes and contents of these two components was not obvious. Conclusion: By objective evaluation of machine vision and electronic nose technology to color and odor can achieve identification between Strychni Semen and its processed products.Color as a control index in processing of Strychni Semen has certain scientific in traditional method.