Study On The Aroma Compounds In Kinmen Sorghum Liquor

Kinmen sorghum liquor is one of the famous liquors in Taiwan,are loved by cross-strait people.Presently,study on aroma components in Kinmen sorghum liquor were reported rarely.In this paper,with the liquor as the research object,study on the aroma components in Kinmen sorghum liquor by head space solid phase microextraction combined with Gas Chromatography Mass Spectrometer.For analysis the whole quality,physical and chemical indicators,mineral elements and sensory evaluation were measured.As the same time,Xiamen King of Sorghum Liquor and Danfeng liquor were selected as references.The researchs were as follows:Physical and chemical indicators of Kinmen sorghum liquor were measured,as follows: soluble solids was 18.15%,total acid content of it was 1.10 g/L,total ester content of it was 2.28 g/L.Results of calcium,iron and magnesium which measured by atomic absorption spectrophotometry levels respectively was 2.9954 mg/L,0.1057 mg/L,3.1942 mg/L.Using sorting test method and fuzzy mathematics method,evaluated the senory of Kinmen sorghum liquor,Xiamen King of Sorghum Liquor and Danfeng liquor.The study found that in the comprehensive quality,Kinmen sorghum liquor slightly better than Xiamen King of Sorghum Liquor,better than Danfeng liquor.Using headspace solid phase microxtraction extracted the volatile components in wine,the best conditions were: alcohol was 15%vol,extraction temperature was 50℃ and extraction time was 30 min.Identification the volatile components in Kinmen sorghum liquor,Xiamen King of Sorghum Liquor and Danfeng liquor,using optimal extraction conditions by HS-SPME-GC-MS method.Kinmen sorghum liquor were identified 46 kinds of volatile compounds,Xiamen King of Sorghum Liquor identified 38 kinds of volatile components,Danfeng liquor were identified 36 species.Mainly esters,aldehydes,ketones,aromatics,alcoholss and so on.Esters were found most in Kinmen sorghum liquor,Xiamen King of Sorghum Liquor and Danfeng liquor.4-methyl guaiacol and 4-ethyl guaiacol separated from the in the Kinmen sorghum liquor.Unlike Kinmen sorghum liquor,isolated undecanone from Xiamen King of Sorghum Liquor and Danfeng liquor.Quantitated the volatile components of the Kinmen sorghum liquor by internal standard method.Study found: the several highest concentration aroma components in Kinmen sorghum liquor were: ethyl acetate,ethyl octanoate,ethyl lactate,ethyl decanoate,ethyl hexanoate.According to quantitative results,odor active value(OAVs)of these quantitative analyzed aroma compounds were calculated.There were respectively 22 kinds of aroma compounds OAV value>1 in Kinmen sorghum liquor.Xiamen King of Sorghum Liquor and Danfeng liquor have 18 species.OAV value of esters were largest in three liquor,esters have important contribution to Kinmen sorghum liquor,Xiamen King of Sorghum Liquor and Danfeng liquor.The largest OAV value of aromatic compounds is phenylacetaldehyde,followed by 2-phenethyl acetate.2-ethyl guaiacol has the largest OAV value in phenols.The largest odor active value of aldehydes and ketone is nonanal.