Analysis on Main Aromatic Components of Chinese Traditional Fen-flavor Sichuan Xiaoqu Liquor by GC with Direct Injection

摘要

Commercially available Sichuan Xiaoqu Liquor of Chongqing Jiangjin, Chongqing Yongchuan, Sichuan Kaijiang, Sichuan Zigong were studied in this experiment. Gas Chromatography (GC) with direct injection was used for analysis on main aromatic components i.g., fusel oil (advanced alcohol), ethyl acetate, etc. The results showed that chromatogram with the similar peaks and kinds of aromatic components in four samples. And the highest among all aromatic components in Xiaoqu Liquor samples of Chongqing Jiangjin, Chongqing Yongchuan, Sichuan Kaijiang were isoamyl alcohol. The concentrations in these saples were 99.53 mg/100 mL, 117.01 mg/100 mL, 77.21 mg/100 mL, respectively. But the highest in the liquor of Sichuan Zigong was the ethyl acetate, mass concentration was up to 208.08 mg/100 mL. Isoamyl alcohol and normal propyl alcohol had close quantity relative ratio relationships in four samples, the ratio respectively were 1.0, 1.2, 1.1, 1.5, isoamyl alcohol and isobutyl alcohol ratio were 2.5, 1.8, 2.2, 2.4, respectively. Special ratio relationships among fusel oil can be used as a sign of Sichuan Xiaoqu Liquor. The main aromatic components of recovery test results was 82.09-116.53%, Relative Standard Deviation (RSD) was 1.23-6.88%. The method had fine accuracy and precision and suitable for quantitative analysis of aromatic constituents of Sichuan Xiaoqu Liquor.