Analysis of Appearance Quality and Chemical Composition Characteristics of Non High Quality Tobacco Leaves
[Objective]To summarize the common characteristics of non high quality flue-cured tobacco leaves to provide reference for quality improvement.[Method]Taking 10 industrial grade samples of tobacco leaves from each of 8 municipal producing areas as the research objects,the differences in appearance quality scores and chemical composition contents of different grades were compared,and the correlation between indexes was analyzed.[Result]Non high quality tobacco leaves showed different characteristics in different parts of appearance quality,with less oil,thinner body,and poor uniformity in lugs;less oil,poor uniformity,and variegated in cutters;and thicker body,variegated,and poor uniform-ity in leaf.The trend of chemical composition characteristics was similar among different parts,with higher content of nitrogenous compounds,pigments,and organic acids,lower content of sugar compounds,but the differences were greater in lower leaves.The depth of leaf color,thick-ness of body and tightness of leaf structure were mainly positively correlated with the content of nitrogen compounds and some neutral aroma components;oil content,uniformity and variegated score were mainly positively correlated with the content of sugar compounds,and negatively correlated with some organic acid content;color score was also negatively correlated with the content of nitrogen compounds.[Conclusion]The emphasis indexes of the relative characteristics of the appearance quality of non high quality tobacco leaves vary in three different parts,and there are common rules in the chemical composition differences,which are strongly correlated with appearance indexes.
Non high quality tobacco leavesAppearance qualityChemical compositionQuality characteristicsCorrelation
万方数据
维普
