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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 19, No. 4, 2015, pp. 787-792
Bioline Code: ja15098
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Applied Sciences and Environmental Management, Vol. 19, No. 4, 2015, pp. 787-792

 en Isolation and Physicochemical Characterization of Lignin from Chromolaena Odorata check for this species in other resources and Tithonia Diversifolia check for this species in other resources
FRIDAY, O. NWOSU & MUHAMMAD, M. MUZAKIR

Abstract

This study dealt with isolation of lignin from soft woods namely; Chromolaena Odorata check for this species in other resources (Siam Weed) and Tithonia Diversifolia check for this species in other resources (Mexican Sunflower) using alkali pretreatment method. The raw samples were characterized by some physico-chemical parameters before extraction. Chromolaena odorata gave higher lignin yield and lesser ash content of 15.12 % and 4.22 % respectively compared to Tithonia diversifolia with 7.40 % and 9.56 % respectively. The isolated lignins were characterized by some physico-chemical parameters and spectroscopy methods like Futran Transform Infrared Spectroscopy (FT-IR) and Scanning Electron Microscopy (SEM). Lignin from Chromolaena odorata was found to be more pure than the one from Tithonia diversifolia as evident from the values of ash content (4.22%) and klason lignin (33.65 %) for Chromolaena odorata while ash content (9.56 %) and klason lignin (21.96 %) were obtained from Tithonia diversifolia. The FT-IR spectra of both lignins revealed the presence of syringyl and guaiacyl units.

Keywords
Chromolaena odorata; Tithonia diversifolia; Lignin; FT-IR; Physico-chemical parameters

 
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