Analysis of Volatile Components in Coffee Extraction by Micropool Headspace Method
Based on the region of small grain of coffee in Yunnan province as raw material,adopting micro pool headspace extraction combined with gas chromatography/mass spectrometry(GC-MS),the research explored suitable for quick analysis methods of the study on volatile com-ponent,construct the analysis methed of GC-MS instrument identification of coffee micro pool headspace extraction technology of volatile com-ponents.The results show that the best extraction conditions was solid-liquid ratio of 1 g∶25 mL,extraction time of 60min,extraction tempera-ture of 65℃,using ethyl acetate as extraction agent,by which the 68 volatile compounds were detected from coffee,and the main volatile com-pounds were2,2′-methylene[6-(1,1-dimethylethyl-4-methyl]phenol(27.65%),2-furfuryl alcohol(21.93%),9-octadeceno-amide(Z)(6.90%).The volatile substances detected were classified,including pyrazines,pyrrole,pyridine,furans,alkenes,aromatics,am-ides,alcohols,ketones,phenols,ethers,aldehydes and other compounds.
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