{"title":"CHANGES IN MOISTURE AND CHEMICAL COMPOSITION OF FLUE-CURED TOBACCO DURING CURING1","authors":"Y. Abubakar, J. H. Young, W. Johnson, W. Weeks","doi":"10.3381/0082-4623-44.1.51","DOIUrl":null,"url":null,"abstract":"Abstract The present study represents a portion of an effort to develop mathematical models for predicting changes in moisture and chemical composition of flue-cured tobacco during curing. In two experiments, concentrations of chlorophyll, starch, reducing sugars, and total alkaloids (as well as moisture contents) were measured. In the first experiment, tobacco was yellowed at temperatures of 30°C, 35°C, and 40°C with 3.33°C wet-bulb depression. In the second experiment, tobacco was yellowed at 35°C with wet-bulb depressions of 1.67°C, 3.33°C, and 5°C (or approximately 89, 81, and 70% relative humidity, respectively). In general, concentrations of chlorophyll and starch in the leaves decreased during curing, whereas concentrations of reducing sugars increased, and total alkaloids remained relatively unchanged. Yellowing temperature had no significant effect on moisture content at the end of the yellowing and leaf drying stages, nor on chlorophyll at the end of the yellowing stage and starch at the end of ...","PeriodicalId":10257,"journal":{"name":"中国烟草科学","volume":"122 1","pages":"51-58"},"PeriodicalIF":0.0000,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"中国烟草科学","FirstCategoryId":"1091","ListUrlMain":"https://doi.org/10.3381/0082-4623-44.1.51","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 9
Abstract
Abstract The present study represents a portion of an effort to develop mathematical models for predicting changes in moisture and chemical composition of flue-cured tobacco during curing. In two experiments, concentrations of chlorophyll, starch, reducing sugars, and total alkaloids (as well as moisture contents) were measured. In the first experiment, tobacco was yellowed at temperatures of 30°C, 35°C, and 40°C with 3.33°C wet-bulb depression. In the second experiment, tobacco was yellowed at 35°C with wet-bulb depressions of 1.67°C, 3.33°C, and 5°C (or approximately 89, 81, and 70% relative humidity, respectively). In general, concentrations of chlorophyll and starch in the leaves decreased during curing, whereas concentrations of reducing sugars increased, and total alkaloids remained relatively unchanged. Yellowing temperature had no significant effect on moisture content at the end of the yellowing and leaf drying stages, nor on chlorophyll at the end of the yellowing stage and starch at the end of ...
期刊介绍：
Chinese Tobacco Science is an academic scientific journal (bimonthly) under the supervision of the Ministry of Agriculture and Rural Affairs of the People's Republic of China, and sponsored by the Tobacco Research Institute of the Chinese Academy of Agricultural Sciences and the Qingzhou Tobacco Research Institute of China National Tobacco Corporation. It was founded in 1979 and is publicly distributed nationwide. The journal mainly publishes academic papers on scientific research results, new production technologies, and modern management in my country's tobacco science research and tobacco production technology. In addition, it also publishes forward-looking review articles in the field of tobacco research. There are columns such as tobacco genetics and breeding, cultivation technology, modulation and processing, physiology and biochemistry, plant protection, review or monograph, quality chemistry, etc.
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