烟草科技2024，Vol.57Issue(5)：23-34,12.
类黄酮和类胡萝卜素代谢物的变化特征及其与褪色的关系
Variations of flavonoid and carotenoid metabolites in cured tobacco and their relationships with color fading
摘要
Abstract
To investigate the characteristics of metabolites in cured tobacco during color fading and their relationship,the easily fading flue-cured tobacco variety Yunyan 87 was treated under 200 μmol/(m2·s)light intensity for 0,15,and 30 d to obtain tobacco leaves with different degrees of fading.The color differences and the characteristic flavonoid and carotenoid metabolites before and after color fading were observed,and their relationships with the degree of fading were analyzed.The results showed that:1)The L* value first decreased and then increased,and the a* and b* values decreased continuously during the fading process of cured tobacco.2)A total of 4 987 metabolites belonging to 25 categories were detected in the cured tobacco after different fading treatments.The more severe the fading was,the higher the amounts of differential metabolites and down-regulated differential metabolites.3)The results of metabolic pathway analysis showed that the transformation metabolic pathways of flavonoid and carotenoid metabolites were significantly enriched during the fading process,indicating that these two pathways were closely related to the development of tobacco color.Quantitative analysis revealed that there were strong correlations between the flavonoid and carotenoid metabolite contents(mass fractions)and the color indexes of the cured tobacco leaves.The degradation and transformation of flavonoid and carotenoid metabolites were closely related to the decrease of redness and yellowness values of the cured tobacco,which might be the main internal cause of cured tobacco fading.关键词
烤烟/褪色/化学成分/代谢物/类黄酮/类胡萝卜素/色差值Key words
Flue-cured tobacco/Color fading/Chemical component/Metabolite/Flavonoid/Carotenoid/Color difference value分类
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钟帅,王维,肖友萍,梁耀星,黄凯祥,郭俊杰,蔡一霞,何经纬,冯玉龙,金保锋..类黄酮和类胡萝卜素代谢物的变化特征及其与褪色的关系[J].烟草科技,2024,57(5):23-34,12.基金项目
广东中烟工业有限责任公司科技计划资助项目"梅州烟区原烟褪色对烟叶质量的影响及其防控措施"(2022440000340008) （2022440000340008）
广东省烟草专卖局科技计划资助项目"广东烟区烤后烟叶褪色原因研究"(2021440000240141),"基于'双喜'品牌广东烟叶高端原料定制化开发"(2023440000240044). （2021440000240141）
