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Object To identify Fritillaria cirrhosa D. Don., Fritillaria thunbergii Miq. and Fritillaria thunbergii Miq. var. chekiangensis Hsiao et K. C. Hsia. with FTIR.Methods Their IR spectra were obtained by direct FTIR.Results The infrared spectra of F. cirrhosa, F. thunbergii, F. thunbergii var. chekiangensis were different.Conclusion F. cirrhosa, F. thunbergii, and F. thunbergii var. chekiangensis were identified by FTIR directly, fastly and accurately.
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Objective: To establish a method for determination of paracetamol in Vc Yinqiao tablets (Vc, paracetamol, Flos lonicerae, Fructus Forsythies), etc. Methods: Diffuse Relectance FTIR was used to determinate paracetamol in the Vc Yinqiao tablets. Results: The content of paracetamol could be obtained directly, and the relationship between the absorbance and the concentration was linear. The average recovery of paracetamol was 98.40, and RSD was 3.18%. Conclusion: The method is simple, fast and reliable. It has been proved to be a good practice for determination of Vitamin C in the Vc Yinqiao Tablets.
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AIM:To analyse the chemical constituents of volatile components from Viola yedoensis Makino. METHODS: The essential oils from Viola yedoensis Makino(collected from Jinhua city and Changchun city) were extracted by steam distillation.The chemical compounds were separated and identified by GC-MS.The relative content of each component was determined by area normalization. RESULTS: Twenty-five and twenty-three constituents were separated from Viola yedoensis Makino collected from Changchun city and Jinhua city;twenty-one and twenty-two compounds were identified respectively.The ratios of identification of total compounds were 88.00% and 91.30% respectively. CONCLUSION: There are significant difference between two varieties of Viola yedoensis Makino,the main coustituents in each plant are n-hexadecanoic acid(16.77%)and phytol(26.97%).