| Tobacco in China's economic composition accounted for a large proportion of aroma is an important factor in measuring the availability of tobacco,tobacco quality depends on the quality of aroma quality.‘K326',‘Yunyan 87' and the new tobacco variety ‘Xiangyan 3' were the main varieties in the main tobacco producing areas of China.Selected Luzhou-flavor,middle flavor and fragrance-type tobacco producing areas as the test point.By comparing the average data for four years and four points,systematic analysis of different chemical composition and aroma components of different flue-cured tobacco varieties in different flue-cured tobacco producing areas.The aim of this paper was to analyze the material basis of the difference of flue-cured tobacco,reveal the breeding of different flavor tobacco varieties and the reasonable distribution of varieties theoretical basis.The main results :(1)Between different pilot areas,Guiyang and Jiang Yong in the conventional chemical composition has a certain similarity,both in the nicotine,chlorine,potassium,calcium and petroleum ether extract content showed high In other producing areas,according to Luzhou-flavor,intermediate flavor and fragrance type decreased in descending and there are significant differences.The content of total sugar and starch in Huayuan was higher than that in other producing areas.According to the middle flavor,the flavor and fragrance were decreasing and there was significant difference.In the same way,flue-cured tobacco leaves were found in different flavor areas,and the aroma-flavor and the middle flavor were decreased in the same way.Most of the existence of significant or very significant differences,to verify the different flavor areas of tobacco leaf flavor characteristics of the formation is a certain material basis.Luzhou-style characteristics of the material base include: high levels of phenylalanine products(benzaldehyde,benzyl alcohol,phenylacetaldehyde,phenylethyl alcohol),maillard reaction product(butyrolactone,furfural,furfuryl alcohol,indole,pyridine,2-acetylpyrrole,2-acetylpyrroline,5-methylfurfuryl alcohol)and plastid pigment degradation products(lutein,beta-carotene and acyclic carotenoid degradation products).Intermediate fragrance style material basis includes:High levels of chlorophyll degradation products(new plant diene)and cisplatin-like degradation products(3-hydroxy-2-butanone,eggplant ketone,cyproterone diol B);Fragrance style material basis includes:High level of cetane degradation products(eggplant,ketone,dextrose diacetone,cyproterone diol,A,and maillard reaction products(2,6-nonadienal,2,3-dihydrobenzofuran,breadone).Conclusion the above-described high levels are relative terms of content of aroma.(2)the conventional chemical composition of different varieties,only some indicators of significant differences and no rules to follow.There were significant or significant differences in the content of most of the products from the different varieties of flue-cured tobacco leaves,and some of the phenylalanine products,more than half of the degradation products of ciproparine.Differences between the different varieties of fragrant substances are different.'Yunyan 87' plastrophin degradation product content(5,6-epoxy-?-iridone,soyrendenone A,dirtatriene B,dirtatriene C,daidzetriene D,4-oxidized isophorone,beta-cyclic citral,dihydro kiwi lactone,dehydrogenated dihydro-?-ionone)were significantly or significantly higher than those of 'K326' and 'Xiangyan 3'.'Xiangyan 3' in the maillard reaction products(furfural,2,6-nonadienal,2,3-dihydrobenzofuran,bread ketone,indole,2-acetyl pyrrole,2-acetyl pyrrole Is similar to 'Yunyan 87',but both are significantly higher than 'K326'.The 'K326' is similar in the phenylalanine product(phenylacetaldehyde,phenylethyl alcohol)to 'Yunyan 87',but both are significantly higher than those of ‘Xiangyan 3'. |
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