Abstract:

Electronic nose was used for the detection of odor fingerprint change of Radix Peucedani before and after blossom  and the applicability of electronic nose in the quality evaluation of traditional Chinese medicinal herbs was discussed. Response values of electronic nose for detecting odor of preblossom and postblossom Radix Peucedani were subjected to principal component analysis and discriminant factor analysis (DFA) to establish characteristic fingerprints. In addition, statistical quality control analysis (SQC) was conducted. Results showed that electronic nose could make a sensitive response to odor change of Radix Peucedani before and after blossom for distinguishing preblossom and postblossom Radix Peucedani. Consequently, this technique can be applied to the odor identification of traditional Chinese medicinal herbs.

Key words: electronic nose, Radix Peucedani, odor, fingerprint, quality evaluation