Relationship between Antioxidant Capacity and Quality of Flue-cured Tobacco
WANG Xiaofei
WANG Baoxiang
ZHANG Mingyue
ZHANG Guang
CAO Yubo
QIU Liyou
Abstract：To explore the relationship between antioxidant capacity and quality of flue-cured tobacco, Yunyan 97 was cultivated in three typical tobacco soils with different textures in Luzhou. The three typical tobacco soils were flint soil,yellow soil,and paddy soil. The total antioxidant capacity,total phenolic con-tent and carotenoid content of the middle and upper leaves were detected when the leaf age was 15 d to 75 d,further more the total antioxidant capacity and the contents of neutral aroma components of the flue-cured tobacco leaves were determined. In flint soil,the total antioxidant capacity of the middle and upper leaves increased at the leaf age of 15—45 d,and then slightly decreased at the leaf age of 60—75 d. In yellow soil,the total antioxidant capacity of the middle leaves steadily increased through the whole growth stage,while the upper leaves decreased in earlier growth stage and then steadily increased. In paddy soil, the total antioxidant capacity of the middle and upper leaves had no distinct change in the whole growth stage. The total antioxidant capacity of the middle and upper leaves cultivated in flint and yellow soils at a leaf age of 75 d was significantly higher than that in paddy soil,the middle leaves were 67. 38% and 75. 80% higher,and the upper leaves were 131. 76% and 99. 67% higher,respectively. The total pheno-lics and carotenoids contents showed significant or very significant positive correlation with the total an-tioxidant capacity of the middle leaves cultivated in three typical soils with different textures,while the to-tal phenolics contents and the total antioxidant capacity of the upper leaves showed a very significant posi-tive correlation. The contents of carotenoid catabolites, cembrane catabolites, and neutral aroma compo-nents( except of neophytadiene) of the flue-cured tobacco leaves showed significant or very significant positive correlation with the total antioxidant capacity. The results confirm that there is a close relationship between the antioxidant capacity and the quality of tobacco leaves,thus the antioxidant capacity of the to-bacco leaves may be used as an important index to represent the quality of tobacco leaves.
Keywords：flue-cured tobaccoantioxidant capacitytotal phenolcarotenoidneutral aroma compo-nents
Publication Date：2015-08-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 32-37 )