烤烟烟叶短期储存颜色变化分析

Color Change of Flue-cured Tobacco During Short-term Storage

为研究湖北主栽烤烟品种烟叶颜色差异及其在150天短期储存过程中颜色变化情况,测定‘云烟87’、‘K326’、‘金神农1号’C3F等级烟叶的颜色值亮度L^(*)、红度a^(*)、黄度b^(*)、饱和度C^(*)。结果表明,3个品种烟叶颜色差异达极显著水平,其中‘云烟87’烟叶颜色亮度、黄度和饱和度高;‘金神农1号’烟叶颜色红度、黄度和饱和度较高;‘K326’烟叶颜色亮度、红度居中,黄度和饱和度较低。‘云烟87’、‘K326’、‘金神农1号’烟叶颜色均匀度依次降低。在150天短期存放过程中,3个品种烟叶的颜色亮度、黄度和饱和度逐渐增高,但红度逐渐降低。随储存时间延长,3个品种烟叶色差相对于烤后初期逐渐增大,色差最大的‘金神农1号’烟叶,其次是‘云烟87’,而‘K326’色差最小。说明短期储存中烟叶颜色最稳定的品种是‘K326’,其次为‘云烟87’‘,金神农1号’易随贮藏时间发生颜色变化。

To study the color difference of main flue-cured tobacco varieties in Hubei Province and their color changes during short-term storage for 150 days,the color values of‘Yunyan 87’,‘K326’and‘Jinshennong No.1’were measured,including brightness L^(*),redness a^(*),yellowness b^(*),and saturation C^(*).The results showed that the color difference of the three varieties’leaves reached a very significant level,among which,‘Yunyan 87’had high color brightness,yellowness and saturation,‘Jinshennong No.1’had relatively high color redness,yellowness and saturation,‘K326’had middle color brightness and redness,and relatively low yellowness and saturation.The color uniformity of‘Yunyan 87’,‘K326’and‘Jinshennong No.1’decreased in turn.During the short-term storage of 150 days,the color brightness,yellowness and saturation of the three varieties increased gradually,but the redness gradually decreased.With the extension of the storage time,the color difference of the three varieties increased gradually compared with the early stage after curing.The biggest color difference was found in‘Jinshennong No.1’,followed by that of‘Yunyan 87’,and then‘K326’.Therefore,‘K326’is the most stable color variety in short-term storage,followed by‘Yunyan 87’,and‘Jinshennong No.1’is most likely to change color with the storage time.