| 烘烤过程中烟叶颜色变化与主要化学成分的关系 |
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| 引用本文： | 贺帆.烘烤过程中烟叶颜色变化与主要化学成分的关系[J].中国烟草学报,2014,20(6):97-102. |
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| 作者姓名： | 贺帆 |
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| 作者单位： | 河南农业大学 |
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| 摘 要： | 以烤烟NC89中部叶为试验材料，对密集烘烤过程中烤烟烟叶亮度值L、红度值a、黄度值b、饱和度C、色相角H°、色泽比H和色差值?E的变化规律及其与主要化学成分的关系进行了研究。结果表明，烘烤过程中烟叶正面与背面L、a、b、C、H°和H值的变化趋势基本一致；其均在鲜烟叶至42℃结束时变化剧烈，42℃结束之后变化幅度趋缓。烟叶正背面色差值的变化则相对平稳，从鲜烟叶至42℃开始略有上升，在54℃稳温结束时略有下降。相关分析表明，烘烤过程中烟叶各颜色参数与淀粉、还原糖、叶绿素、类胡萝卜素、蛋白质、氨基酸和含水量之间相关性明显，大部分都达到了显著或极显著水平。通过对烟叶颜色参数与化学成分的回归分析，建立了烟叶颜色参数与主要化学成分动态变化的预测方程；除叶绿素外，烘烤过程中烤烟烟叶其他主要化学成分预测值与实测值符合程度较好，预测精度高。通过色差计量化烘烤过程中的烟叶颜色参数，从而建立烘烤过程中主要化学成分的预测模型，进行快速准确的预测，提高烘烤操作的准确性。
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| 关 键 词： | 烤烟 烘烤 颜色 化学成分 |
| 收稿时间： | 2013-07-04 |
Color Changes and Relationship between Chemical Components of Flue-cured Tobacco Leaves during Curing Process |
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| Abstract: | Taking lumbar leaves of NC89 as experimental materials, Changes of color indexes such as L, a, b, C, H°, H and ?E and their relationship between chemical components of flue-cured tobacco leaves during bulk curing were studied. The results showed that, the value of L, a, b, C, H° and H had same trends during curing. It had acute changes from the fresh tobacco leaves to the ending of 42℃, and slow changes after the ending of 42℃. The color difference between front and back of tobacco leaves changed smoothly. And it increased smally from fresh tobacco leaves to the beginning of 42℃, and decreased smally at the ending of 54℃. Correlation analysis showed that, the color parameters showed positive correlation with the contents of starch, reducing sugar, chlorophyll, carotenoid, protein, amino acid and moisture, with significant or extremely significant level. The prediction equations were established between color parameters and chemical components by regression analysis. By regression model verification, the predicted values approached the tested value of chemical components except chlorophyll. The changes of chemical components could predict quickly and accurately by taking color difference meter to quantitate color parameters. And it could improve the accuracy of curing technology. |
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