Effect of Antioxidants on the Storage Quality of Tobacco Leaves After Nitrogen-enriched Air Conditioning and Dispersion
In this study,high and low concentrations of three different antioxidants were used to treat tobacco strips to explore the quality changes of cured tobacco leaves after nitrogen-enriched air conditioning and dispersion.The changes of iodine value,pH,color difference and polyphenol oxidase activity were analyzed by using C3F redried tobacco strips in Wenshan of Yunnan Province,which had continuously undergone nitrogen-enriched air conditioning for 28 months.The effects of different treatments on slowing the iodine value increase of tobacco leaves of natural storage for 3 months were as follows:Ve-cyclodextrin complex treatment＞nitrogen-enriched air conditioning treatment＞0.75 g/L Ve＞0.75 g/L Vc＞0.075 g/L Vc/0.075 g/L Ve.After 6 months of natural storage,the treatment effects of high concentration of Ve and Vc were the best.The pH of the samples treated with Ve-cyclodextrin complex decreased at the lowest rate,and the original pH of the samples was maintained the best.The treatment of low and high concentrations of Ve and high concentration of Vc and Ve-cyclodextrin complex can improve the chroma of tobacco leaves of natural storage within 6 months after dispersion.After 6 months of natural storage,the activity of polyphenol oxidase was the lowest under high concentration of Ve treatment.The three kinds of antioxidants can effectively delay the changes of properties of tobacco leaves under natural storage after nitrogen-enriched air conditioning and dispersion,and high concentration of Ve has the least influence on the sensory evaluation of tobacco leaves.
antioxidantnitrogen-enriched air conditioningdispersing and curingtobacco leavesphysical and chemical properties
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