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 benefcial if utilized efciently due to its rich chemical compounds. In this study, an ethanol toluene-soluble extractive, alpha-cellulose and lignin obtained from Leucaena leucocephala bark were char...
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| Format: | Article |
| Language: | English English |
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Springer Nature
2021
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| Online Access: | https://eprints.ums.edu.my/id/eprint/26781/1/Chemical%20functional%20groups%20of%20extractives%2C%20cellulose%20and%20lignin%20extracted%20from%20native%20Leucaena%20leucocephala%20bark.pdf https://eprints.ums.edu.my/id/eprint/26781/2/Chemical%20functional%20groups%20of%20extractives%2C%20cellulose%20and%20lignin%20extracted%20from%20Leucaena%20leucocephala%20bark.pdf |
| _version_ | 1825714053679415296 |
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| author | Rafidah Md Salim Jahimin Asik Mohd Sani Sarjadi |
| author_facet | Rafidah Md Salim Jahimin Asik Mohd Sani Sarjadi |
| author_sort | Rafidah Md Salim |
| collection | UMS |
| description | Bark from trees is considered a worthless raw material. However, this resource could be economically benefcial if utilized efciently 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 fngerprint 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 | 2024-03-06T03:06:05Z |
| format | Article |
| id | ums.eprints-26781 |
| institution | Universiti Malaysia Sabah |
| language | English English |
| last_indexed | 2024-03-06T03:06:05Z |
| publishDate | 2021 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | ums.eprints-267812021-04-19T06:51:21Z https://eprints.ums.edu.my/id/eprint/26781/ Chemical functional groups of extractives, cellulose and lignin extracted from native Leucaena leucocephala bark Rafidah Md Salim Jahimin Asik Mohd Sani Sarjadi QD Chemistry Bark from trees is considered a worthless raw material. However, this resource could be economically benefcial if utilized efciently 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 fngerprint 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. Springer Nature 2021-01-23 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/26781/1/Chemical%20functional%20groups%20of%20extractives%2C%20cellulose%20and%20lignin%20extracted%20from%20native%20Leucaena%20leucocephala%20bark.pdf text en https://eprints.ums.edu.my/id/eprint/26781/2/Chemical%20functional%20groups%20of%20extractives%2C%20cellulose%20and%20lignin%20extracted%20from%20Leucaena%20leucocephala%20bark.pdf Rafidah 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, 55. pp. 259-313. https://doi.org/10.1007/s00226-020-01258-2 |
| spellingShingle | QD Chemistry Rafidah 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 | QD Chemistry |
| url | https://eprints.ums.edu.my/id/eprint/26781/1/Chemical%20functional%20groups%20of%20extractives%2C%20cellulose%20and%20lignin%20extracted%20from%20native%20Leucaena%20leucocephala%20bark.pdf https://eprints.ums.edu.my/id/eprint/26781/2/Chemical%20functional%20groups%20of%20extractives%2C%20cellulose%20and%20lignin%20extracted%20from%20Leucaena%20leucocephala%20bark.pdf |
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