Chemical functional groups of extractives, cellulose and lignin extracted from native Leucaena leucocephala bark
Bark from trees is considered a worthless raw material. However, this resource could be economically benificial if utilized efficiently due to its rich chemical compounds. In this study, an ethanol toluene-soluble extractive, alpha-cellulose and lignin obtained from Leucaena leucocephala bark wer...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Springerlink
2021
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| Online Access: | https://eprints.ums.edu.my/id/eprint/36350/1/MdSalim2021_Article_ChemicalFunctionalGroups.pdf https://eprints.ums.edu.my/id/eprint/36350/3/FULL%20TEXT.pdf |
| _version_ | 1825715293329031168 |
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| author | Rafdah Md Salim Jahimin Asik Mohd Sani Sarjadi |
| author_facet | Rafdah Md Salim Jahimin Asik Mohd Sani Sarjadi |
| author_sort | Rafdah Md Salim |
| collection | UMS |
| description | Bark from trees is considered a worthless raw material. However, this resource could be economically benificial if utilized efficiently due to its rich chemical compounds. In this study, an ethanol toluene-soluble extractive, alpha-cellulose and lignin obtained from Leucaena leucocephala bark were characterized to determine their chemical functional groups. Based on FTIR spectral analysis, the results indicated that the bands of the functional groups of the extractive from the original bark remain unchanged; however, the absorbance intensity was found to be weaker in the group frequency and fingerprint regions. Removal of extractive, pectin, hemicellulose and lignin from the bark indirectly increased the strong absorbance intensity of cellulose. Broad peaks of OH stretching found in all spectra were assigned to the presence of phenolic OH and aliphatic structures for extractive and aromatic structures of lignin. It was revealed that aromatic functional groups were mainly found in the extractive, while water, carbonyl and ether were the dominant groups in cellulose, and methyl, methylene, carbonyl and carboxyl groups were enriched in lignin. |
| first_indexed | 2024-03-06T03:24:41Z |
| format | Article |
| id | ums.eprints-36350 |
| institution | Universiti Malaysia Sabah |
| language | English English |
| last_indexed | 2024-03-06T03:24:41Z |
| publishDate | 2021 |
| publisher | Springerlink |
| record_format | dspace |
| spelling | ums.eprints-363502023-08-08T07:45:23Z https://eprints.ums.edu.my/id/eprint/36350/ Chemical functional groups of extractives, cellulose and lignin extracted from native Leucaena leucocephala bark Rafdah Md Salim Jahimin Asik Mohd Sani Sarjadi QK1-989 Botany QL461-599.82 Insects Bark from trees is considered a worthless raw material. However, this resource could be economically benificial if utilized efficiently due to its rich chemical compounds. In this study, an ethanol toluene-soluble extractive, alpha-cellulose and lignin obtained from Leucaena leucocephala bark were characterized to determine their chemical functional groups. Based on FTIR spectral analysis, the results indicated that the bands of the functional groups of the extractive from the original bark remain unchanged; however, the absorbance intensity was found to be weaker in the group frequency and fingerprint regions. Removal of extractive, pectin, hemicellulose and lignin from the bark indirectly increased the strong absorbance intensity of cellulose. Broad peaks of OH stretching found in all spectra were assigned to the presence of phenolic OH and aliphatic structures for extractive and aromatic structures of lignin. It was revealed that aromatic functional groups were mainly found in the extractive, while water, carbonyl and ether were the dominant groups in cellulose, and methyl, methylene, carbonyl and carboxyl groups were enriched in lignin. Springerlink 2021-01 Article NonPeerReviewed text en https://eprints.ums.edu.my/id/eprint/36350/1/MdSalim2021_Article_ChemicalFunctionalGroups.pdf text en https://eprints.ums.edu.my/id/eprint/36350/3/FULL%20TEXT.pdf Rafdah Md Salim and Jahimin Asik and Mohd Sani Sarjadi (2021) Chemical functional groups of extractives, cellulose and lignin extracted from native Leucaena leucocephala bark. Wood Science and Technology. pp. 1-19. ISSN 1432-5225 10.1007/s00226-020-01258-2 |
| spellingShingle | QK1-989 Botany QL461-599.82 Insects Rafdah Md Salim Jahimin Asik Mohd Sani Sarjadi Chemical functional groups of extractives, cellulose and lignin extracted from native Leucaena leucocephala bark |
| title | Chemical functional groups of extractives, cellulose and lignin extracted from native Leucaena leucocephala bark |
| title_full | Chemical functional groups of extractives, cellulose and lignin extracted from native Leucaena leucocephala bark |
| title_fullStr | Chemical functional groups of extractives, cellulose and lignin extracted from native Leucaena leucocephala bark |
| title_full_unstemmed | Chemical functional groups of extractives, cellulose and lignin extracted from native Leucaena leucocephala bark |
| title_short | Chemical functional groups of extractives, cellulose and lignin extracted from native Leucaena leucocephala bark |
| title_sort | chemical functional groups of extractives cellulose and lignin extracted from native leucaena leucocephala bark |
| topic | QK1-989 Botany QL461-599.82 Insects |
| url | https://eprints.ums.edu.my/id/eprint/36350/1/MdSalim2021_Article_ChemicalFunctionalGroups.pdf https://eprints.ums.edu.my/id/eprint/36350/3/FULL%20TEXT.pdf |
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