The Influence Of Chemical Compounds And Aroma And Taste Of Cured-leaf On Flue-cured Environment In The Yellowing Stage

With the best regression of two factors of temperature and relative humidity and curing by improved flue-curing oven, the experiment studied the relationship between leaf quality and curing environment in the yellowing stage of flue-cured tobacco . the result indicate that multiple scores of compounds index .content of petroleum ether extract, aroma and taste of cured-leaf presented a trend of parabola curve , which increased to a higher level of peak platform in the range from 36.5 to 39 degrees of temperature and 84 to 90 percent of relative humidity , while the lower leaf quality would produced in the extremely treatments of lower temperature and relative humidity, low temperature and high relative humidity , high temperature and low relative humidity, high temperature and relative humidity. The study also showed that the influence if temperature outweigh that of the relative humidity.According to the study , author suggested that giving a stale temperature of 36.3-37℃ and relative humidity of 85~90% is necessary considering of the quality promotion especially the improving of aroma and taste and the operation of flue curing in the yellowing stage.