Thermogravimetric study on stem biomass of Nicotiana tabacum

• Published in: Thermochimica acta Vol. 486; no. 1; pp. 1 - 4
• Main Authors: Sung, Yong Joo, Seo, Yung Bum
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier B.V 20.03.2009; Elsevier
• Subjects: Agronomy. Soil science and plant productions; Biological and medical sciences; Biomass; Fundamental and applied biological sciences. Psychology; General agronomy. Plant production; Hot water extraction; Stem; Thermogravimetric analysis; Tobacco; Use of agricultural and forest wastes. Biomass use, bioconversion; Hot water extraction; Tobacco; Biomass; Thermogravimetric analysis; Stem; Thermogravimetry; Vegetal by product; Solvent extraction; Nicotiana tabacum; Hot water; Surface structure; Dicotyledones; Morphology; Angiospermae; Spermatophyta; Solanaceae; Thermal analysis; Scanning transmission electron microscopy
• ISSN: 0040-6031; 1872-762X
• DOI: 10.1016/j.tca.2008.12.010

The non-isothermal behavior of the stem biomass of Nicotiana tabacum was investigated in depth using thermogravimetric analyzer (TGA). The thermal behavior of tobacco stems showed different patterns depending on decomposition conditions as well as tobacco varieties. The higher contents of the volatile components and simple sugar in the bright stem resulted in the greater thermal decomposing in the temperature range ca. 120–250 °C. The structural difference in hemicellulose and cellulose depending on tobacco varieties could be detected by the temperature difference in the derivative TG result. The thermal analysis of the freeze-dried soluble obtained from hot water extraction of tobacco stem demonstrated that the distinct weight loss of the bright stem at around 570 °C was due to oxidation of the residual char originated from the soluble fraction, such as simple sugar.