Canonical Correlation Between Main Polyphenols and Sensory Quality of Flue-cured Tobacco

In order to investigate the relationship between contents of main polyphenols in flue-cured tobacco and its sensory quality,the canonical correlation analysis of chlorogenic acid,neochlorogenic acid,rutin,scopoline contents with sensory quality scores of 153 flue-cured tobacco samples was conducted.The results indicated that: 1) the first two pairs of canonical correlation coefficients of these four polyphenols with the aromatic characteristic indexes were significant at 1% and 5% confidence level,respectively;and significant at 1% confidence level with the smoke and taste characteristic indexes;2) neochlorogenic acid positively correlated with smoke impact,smoothness,dryness and sweetness,while negatively correlated with aromatic quantity;3) chlorogenic acid positively correlated with smoke intensity,glomeration,dryness,sweetness and aromatic indexes;4) rutin positively correlated with smoke intensity,glomeration and aromatic indexes,while negatively correlated with irritation and aftertaste;5) scopoline positively correlated with smoke intensity and glomeration,while not significantly correlated with aromatic and taste indexes.