山东烤烟烟叶颜色量化分析及与多酚和类胡萝卜素含量的关系

摘要

In order to investigate the relationship between color characteristics and chromogenic substances of the flue-cured tobacco leaves from Shandong, the cured leaf was sampled and leaf color was quantitatively analyzed, and the relationships between color characteristic values and contents of polyphenol and carotenoid were discussed. The results showed that: the color spectra of tobacco leaves from different areas of Shandong Province differed obviously. The spectrum reflectivity and brightness (L*) of leaves from Yishui and Feixian and the red index (a*) of leaves from Linqu were higher than those from the other areas. The contents of polyphenol and carotenoid in tobacco leaves from different areas also differed greatly. Yishui and Feixian leaves possessed higher polyphenol content and lower caroteniod content, while Linqu leaves had lower polyphenol content and higher carotenoid content. The correlation analysis indicated that the contents of new chlorogenic acid, 4-o-caffoylquinic acid and chlorogenic acid significantly or extremely significantly positively correlated to V and negatively correlated to a, while lutein,β-carotene and carotenoid significantly or extremely significantly negatively correlated to V and significantly positively correlated to a'.%为明确山东烤烟烟叶颜色特征及与显色物质的关系,采集烤后烟叶样品对烟叶颜色进行了量化分析,并探讨了烟叶颜色特征值与多酚和类胡萝卜素含量的关系.结果表明,山东不同产区烟叶颜色光谱特征存在明显的地域性差异,沂水和费县烟叶的光谱反射率较高,烟叶明度L*较高,临朐烟叶红度a*明显高于其他产区.山东不同产区烟叶多酚和类胡萝卜素含量均存在较大差异.沂水和费县烟叶的多酚含量较高,而类胡萝卜素含量较低；临朐烟叶多酚含量较低,但具有较高的类胡萝卜素含量.相关分析表明,新绿原酸、4-O-咖啡奎尼酸和绿原酸含量与颜色特征值L*呈显著或极显著正相关,而与a*呈负相关关系；叶黄素、β-胡萝卜素和类胡萝卜素含量与颜色特征值L*呈显著或极显著负相关,而与a*呈极显著正相关.