Study On Characteristics Of Chemical Components And Smoking Quality Of Tobacco Leaf And Their Relations In Hongda Variety

Bai Autonomous Prefecture of Dali, one of suitable region for tobacco growth, had provided quality tobacco material for many important industrial companies for many years, especially, the yield of Hong-Da variety has amounted to 50000 tons. Coming from four field tests, the research of material was tested in conventional chemicals, pre-fragrance material, volatile normal fragrance material and smoke panel test. Data analysis is mainly about function models, similar analysis method. Typical relevant methods were used in evaluating Hong-Da variety discriminative chemical material characteristics with other three varieties and the relation between smoke panel test and chemical material. The results are as follow:1 Conventional chemical material characteristics in Hong-Da varietyComparing to other three varieties, the Hong-Da variety has the characteristics of lower total sugar content, higher K icon content and higher proportion of total sugar/ reducing sugar.2 Pre-fragrance material characteristics in Hong-Da varietyThe pre-fragrance material content keeps higher level in phytoxanthin,β-carotene, carotenoid, polyphenol type material, rutin, oxalic acid, malic acid, non- volatile organic acid, cetylic acid, octadecanoic acid, linoleic acid, higher fatty acid saturation, common valeric acid andβ-methyl pentanoic acid, but lower in citric acid content, comparing to other three varieties.3 Volatile normal fragrance material characteristcs in Hong-Da varietyCompare to the products degraded by cembrane, there is little difference between HongDa variety and Yun85 variety, but the content of products is degraded by cembrane in HongDa variety. For instance, sibyl three ene glycol 1-3 is higher than the variety of K326 and Yun87. In HongDa variety, the degraded material content of aromatic amino acid is lower than other varieties, because of lower content in the material of benzil alcohol, phenethyl alcohol, benzaldehyde,2-acetyl pyrrole etc. The Maillard reaction products content in HongDa variety is higher than Yun85, but lower than Yun87 and K326 varieties. The degraded material content of neophytadiene and neophytadiene in HongDa variety is higher than other varieties, especially the content of ionol. 4 Smoke panel test quality characteristics in HongDa varietyThe smoke panel test quality of HongDa variety is superior to the other three varieties in fragrance, smoke, taste and industrial usability characteristics. From this research point of view, smoke panel test quality characteristics of HongDa variety in DaLi region are as follows:typical delicate fragrance, good fragrant quality, abundant fragrant density, fine and smooth fragrant, feeling sweet after finishing smoking, secondary level smoke concentration, less bad smoke, less prick feeling, good smoke diffusiveness, good smoke clustering, remaining taste cleaning and good industral usability.5 Similarity analysis to other varieties in chemical materialBy analyzing, there is similarity between HongDa and Yun87 variety in the following chemical materials:reducing sugar, nicotine, total nitrogen/nicotine, K/Cl, total sugar/nicotine, oleic acid, solanone,2-acetyl pyrrole, benzpyrole,3-hydroxy Geranyl acetone,3-methyfuranone, neophytadien, megastigmatrieone D,2-hydroxyl damascon, ionol and 3- oxidize dihydrogen ionol. Comparing to Yun85 variety, the similarity in chemical material is mainly about:total nitrogen, K/Cl,β- carotene, malic acid, norsolanadione, p-xylene, furanone,5-hydroxyl-3-methyl-1-indanone, megastigmatrieone C and ionol. Generally speaking, the chemical material of Cl, total sugar/nicotine, oleic acid, sibyl three ene glycol 1-3, cyclopentadiene, isolongifolene, phenyl acetaldehyde, 2,4-heptadienal, furfural,3-hydroxy Geranyl acetone and oxidize ionol has similarity to Yun85 variety.6 Chemical component characteristics of HongDa varietyBy screening from hundreds chemical material, the characteristics of HongDa variety is the higher chemical material content in total sugar/reducing sugar, volatile total organic acids, lutein, rutin, oxalic acid, cetylic acid, furfural, and the lower chemical material content in total volatile alkali, citric acid, phenyl ethyl alcohol,2-methoxy-4-vinylphenol, nicky acetone,3-ethyl-2-methyl-pyrrole-2,5-dione,5-hepten-2-cone and 3- hydroxyl damascon.7 The relationship between chemical component and smoke panel test in HongDa varietyThe canonical correlation analysis results show that nicotine is positive correlation to fragrant concentration and negative correlation to bad smoke concentration. Higher content ofβ-carotene, rutin, oxalic acid, linoleic acid and lower content of malic acid, oleic acid positive to smoking feeling such as the index of smoke peameation, prick feeling, sweet ect., but negative to remaining taste clean smoke slustering and smoke concentration. The relationship of bad smoke and oxide caryophyllene is positive correlation, with negative relationship to methyl linoleate.3-hydroxyl heptanoic acid and indole are negative to smoke concentration.3-ethyl-2-methyl-pyrrole-2,5-dione and 3-hydroxy Geranyl acetone are positive to fragrant concentration but negative to smoke concentration, on the contrary, is the 3-methyfuranone to fragrant and smoke concentration. The degraded material of plastid pigment, for example, megastigmatrieone B is positive correlation to smoke concentration while 3- oxhydryl damascon is negative correlation to smoke concentration.