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广东烤烟总挥发碱、总挥发酸和pH的分析
作者: 刘春奎1  贾 琳2  王晓宾3  许嘉阳4  王建民1  田君同5  李红星6  
单位: (1 郑州轻工业学院 烟草科学与工程学院/烟草行业烟草工业生物技术重点实验室  郑州 450001;2 河南农业大学 农学院  
关键词: 烤烟  总挥发碱  总挥发酸  pH  广东  
分类号:S572
出版年,卷(期):页码:2014 ,45 ( 9 ): 页码:1647-1651
摘要:

【目的】研究广东主产烟区烤烟总挥发碱、总挥发酸和pH的特点,为广东烤烟的种植与生产利用提供理论依据。【方法】对广东不同产区、不同等级、不同品种烤烟的总挥发碱、总挥发酸和pH进行对比分析,并对三者间的关系进行偏相关分析。【结果】广东烤烟总挥发碱含量较低,为(0.27±0.09)%;总挥发酸含量偏低,为(0.11±0.04)%;pH均值为5.32±0.20。广东不同产区、不同等级和不同品种烤烟的总挥发碱、总挥发酸和pH均存在差异,以pH的差异最明显。广东烤烟总挥发碱和总挥发酸含量在不同产区、不同等级、不同品种间的差异均不显著(P>0.05),pH在不同产区和不同品种间的差异达极显著水平(P<0.01),不同等级间的pH无显著差异。广东烤烟总挥发酸含量与总挥发碱含量、pH呈极显著负相关,总挥发碱含量与pH呈显著负相关。【结论】生产上可通过提高烤烟的采收成熟度、合理施用铵态与硝态氮肥、科学陈化烟叶等措施,适当提高广东烤烟总挥发碱和总挥发酸含量。

【Objective】Characteristics of total volatile alkali, total volatile acid and pH value were researched in flue-cured tobacco samples from Guangdong tobacco-growing areas, in order to provide theoretical references for cultivation and utilization of Guangdong flue-cured tobacco. 【Method】Contents of total volatile alkali, total volatile acid and pH value in flue-cured tobacco leaves from Guangdong Province among different production areas, different tobacco grades and different tobacco cultivars were compared, and the relationship among total volatile alkali, total volatile acid and pH value was researched by partial correlation analysis.【Result】Content of total volatile alkali in Guangdong flue-cured tobacco was low, with the mean content of (0.27±0.09)%, and total volatile acid content was very low, with the mean content of (0.11±0.04)%, and the average pH value was 5.32±0.20. Contents of total volatile alkali, total volatile acid and pH value in Guangdong flue-cured tobacco leaves had some differences among different tobacco-growing areas, different grades and different cultivars, and difference of pH value was bigger. Contents of total volatile alkali and total volatile acid of Guangdong flue-cured tobacco leaves had no significant difference (P>0.05) among different tobacco-growing areas, different grades and different cultivars, and pH value had highly significant difference (P<0.01) among different tobacco-growing areas and different cultivars, but there were not significant differences among different grades. Total volatile acid had highly significant negative correlation with total volatile alkali and pH value in Guangdong flue-cured tobacco leaves, and total volatile alkali had highly significant negative correlation with pH value. 【Conclusion】Total volatile alkali content is low, and total volatile acid contents are generally low in Guangdong flue-cured tobacco samples. Total contents of volatile alkali and volatile acid in flue-cured tobacco can be increased appropriately by improving maturity degree of tobacco harvest, applying ammonium and nitrate nitrogen reasonably and fermenting tobacco leaves scientifically.

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