Screening of Quality Markers of Acorus calamus Based on Electronic Nose and Gas Chromatographic Techniques
The PEN3 electronic nose system was used to analyze the odour information of the volatile oil of different batches of Acorus calamus,and the data was processed by radar chart,Load-ing analysis and PCA analysis.The content of chemical components in the volatile oil was analyzed by gas chromatography.The correlation analysis was carried out,and the quality markers of Acorus calamus were screened.The results of the electronic nose odour analysis system showed that the overall odour information of the volatile oil of 21 batches of Acorus calamus was mainly reflected in W5S,W1W and W2W.The results of the gas chromatography analysis showed that the content of β-asarone ether in the volatile oil was the highest,followed by α-asarone ether.The correlation rela-tionship between β-asarone ether and W2W was significant.Therefore,the electronic nose combined with gas chromatography can be used to evaluate the quality of Acorus calamus,and β-asarone can be used as a quality marker for Acorus calamus.
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