Acidity, Solubility and Chemical Utilization of Local Leucaena Leucocephala Stem Bark

Rafidah Md Salim and Jahimin Asik and Mohd Sani Sarjadi (2019) Acidity, Solubility and Chemical Utilization of Local Leucaena Leucocephala Stem Bark. Journal of Mechanical Engineering Research and Developments, 42 (5). pp. 194-201. ISSN 1024-1752

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Acidity, solubility and chemical properties of eleven years old of Leucaena leucocephala stem bark were investigated. The bark was peeled from the stem of tree and gentle washed in tap water to remove dirt before air-dried in the laboratory at room temperature (24 + 3°C) for 2-3 weeks. The bark was minced into coarse powder and grind to pass BS 250µm mesh sieve. After air-dried for several days, the samples were conducted to chemical analyses (ash content and pH value; solubility in 1%NaOH, hot and cold water solubility; extractive, cellulose and lignin content) based on ASTM standard methods. The results show that L. leucocephala stem bark considered as least acidic (pH value 6.04) and high ash content (15.76%). The solubility of bark components was higher in 1% NaOH (41.36%) compared to hot water (14.45%) and cold water (11.06%). Holocellulose and hemicellulose was 132.85% and 103.66%, respectively. Lignin was the major composition in L. leucocephala stem bark (38.4%) followed by cellulose (29.19%) and extractive (8.39%). This study indicated that the bark of L. leucocephala had less acidity. The high solubility of the bark potential as a carbohydrate resource, while the chemical component of the bark might influence rapid combustion during pyrolysis.

Item Type: Article
Keyword: Acidity , Solubility , Chemical properties , Leucaena leucocephala , Bark
Subjects: Q Science > QH Natural history > QH1-278.5 Natural history (General)
S Agriculture > SB Plant culture > SB1-1110 Plant culture
Department: FACULTY > Faculty of Tropical Forestry
Date Deposited: 28 Oct 2022 13:55
Last Modified: 28 Oct 2022 13:55

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