福建农林大学学报（自然科学版）2012，Vol.41Issue(2)：122-127,6.
密集烘烤定色期升温速度对烤烟类胡萝卜素降解和颜色的影响
Study on carotenoids degradation and color changes of flue-cured tobacco at leaf-drying stage during bulk curing
摘要
Abstract
In order to improve the aroma quality of flue-cured tobacco and provide a theoretical basis for the optimization of curing technology, effects of the temperature-increasing rate at the leaf-drying stage during bulk-curing on the carotenoid degradation, content of the aroma components produced by carotenoid degradation and color change of tobacco leaves were studied. Results showed that; carotenoid content decreased gradually at the leaf-drying stage; the degradation degrees of p-carotene, lutein, neoxanthin and violaxthin were all in order; slow heating rate ( T3 ) > medium heating rate ( T2 ) > high heating rate ( T,) ; the carotenoid degradation rate of T3 was the highest, I.e. 76.11%. Content of the aroma components of T3 was the highest, reaching 39.73 μg · g-1, next was the T2, I. E. 33.07 (Ag ? G-1. The color parameters reached their peaks 18 h after the starting of leaf-drying stage. There were negative correlations between the color parameters of tobacco L+ , a+ and the contents of carotenoids as well as the other components , and there was a good correlation between a+ and carotenoids contents. In general, heating rate of 1 T/2.0 h would benefit the sufficient degradation of carotenoids and improve the aroma and appearance quality of tobacco leaves at leaf-drying stage.关键词
密集烘烤/定色期/升温速度/类胡萝卜素降解/烤烟颜色Key words
bulk curing/ leaf-drying stage/ heating rate/ carotenoids/ flue-cured tobacco/ color分类
农业科技引用本文复制引用
詹军,周芳芳,贺帆,李伟,王涛,宫长荣..密集烘烤定色期升温速度对烤烟类胡萝卜素降解和颜色的影响[J].福建农林大学学报（自然科学版）,2012,41(2):122-127,6.基金项目
国家烟草专卖局资助项目(3300806156) （3300806156）
