Comparison analysis of physical and chemical properties and neutral aroma component for different sun-cured tobacco and flue-cured tobacco

【Objective】Physical and chemical properties and neutral aroma differences of domestic large-scale cultivation of sun-cured tobacco and flue-cured tobacco were studied in order to provide references for developing special and low-tar Chinese tobacco brand.【Method】Filling value,chemical composition,flavor and neutral aroma components of sun-cured tobacco in Hunan Ningxiang,Yunnan Baoshan and Guangxi and flue-cured tobacco in Yunnan Kunming and America were compared and analyzed.【Result】The filling value of sun-cured tobacco was generally higher than that of flue-cured tobacco.The filling value of Kenna from Yunnan Baoshan was the highest(5.88 cm3/g) and the lowest(2.99 cm3/g) was the flue-cured tobacco from Yunnan Kunming.Chemical components of sun-cured and flue-cured tobacco from different producing areas vastly varied,which led to sensory quality differences.The main flavor notes of sun-cured tobacco of Hunan Ningxiang were baking and woody flavor.The sweet flavor notes of the sun-cured tobacco of Yunan Baoshan were obvious.The main flavor notes of the sun-cured tobacco of Guangxi were resinous and nuts.The main flavor notes of the flue-cured tobacco of America were hay-like and caramel.The main flavor notes of the flue-cured tobacco of Kunming were freshness and sweetness.Forty kinds of neutral aroma components were detected in the six tobacco varieties,in which ketone substances were the most(23) followed by aldehydes(7).Multiple comparison and analysis showed that 36 kinds of neutral aroma components were significantly different(P0.05).【Conclusion】Differences existed in physical and chemical properties and neutral aroma components of different suncured tobacco and flue-cured tobacco.Tobacco enterprises can set appropriate ratio to obtain raw materials for Chinese-style tobacco.Among them,Hunan Ningxiang sun-cured tobacco could be used in high-quality cigarette.Yunnan Baoshan sun-cured tobacco had a good application value in researching and developing low tar and low harm cigarette.Guangxi Hezhou yellow suncured tobacco not only could be used in the mixed type cigarettes,but also in flue-cured tobacco leaf group formulation.