A comparative study of oil palm and Japanese beech on their fractionation and characterization as treated by supercritical water
Supercritical water treatment (380°C/100 MPa/ 8 s) was applied to extractive-free oil palm trunk and sapwood portion of Japanese beech and their fractionated products were comparatively characterized, for water-soluble portion and water-insoluble portion composed of methanol-soluble portion and meth...
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| Format: | Article |
| Language: | English |
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Springer Netherlands
2011
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| Online Access: | http://eprints.um.edu.my/11459/1/M._Varman_A_Comparative_Study_of_Oil_Palm_and_J__Beech_on_Their_Fractionation_and_Characterization_as_Treated_by_SCW.pdf |
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| author | Varman, M. Saka, S. |
| author_facet | Varman, M. Saka, S. |
| author_sort | Varman, M. |
| collection | UM |
| description | Supercritical water treatment (380°C/100 MPa/ 8 s) was applied to extractive-free oil palm trunk and sapwood portion of Japanese beech and their fractionated products were comparatively characterized, for water-soluble portion and water-insoluble portion composed of methanol-soluble portion and methanol-insoluble residue. As a result, the water-soluble portion was determined to be composed of carbohydrate-derived products such as organic acids, sugar decomposed products and lignin- derived products, etc. for both species. The oil palm, however, shows higher yield of organic acids (12.9%) and lignin-derived products (12.2%) compared to Japanese beech, in which organic acids were 4.7% in yield and lignin-derived products 9.8%. The methanol-soluble portion was, on the other hand, mainly composed of lignin-derived products, and in oil palm, these lignin-derived products consisted of both syringyl and guaiacyl-type similar to Japanese beech. The methanol-insoluble residue, was also mainly composed of lignin to be 99.2% in its content in the oil palm, compared to Japanese beech 93.7%. Moreover, the phenolic hydroxyl content deter- mined by aminolysis method was higher in oil palm (36.5 PhOH/100C9) compared to Japanese beech (16.9 PhOH/100C9). Furthermore, an alkaline nitrobenzene oxidation analysis indicated that, the methanol-insoluble residue of the oil palm was less in oxidation products whereas in Japanese beech nitrobenzene oxidation products completely diminished. These lines of evidence suggest that methanol-insoluble residue is composed of lignin with more condensed-type of linkages with high phenolic hydroxyl groups. In addition, the water-soluble portion could be utilized for organic acid production, whereas the methanol-soluble portion and its insoluble residue for phenolic chemical production, with oil palm showing higher potential compared to Japanese beech. |
| first_indexed | 2024-03-06T05:28:46Z |
| format | Article |
| id | um.eprints-11459 |
| institution | Universiti Malaya |
| language | English |
| last_indexed | 2024-03-06T05:28:46Z |
| publishDate | 2011 |
| publisher | Springer Netherlands |
| record_format | dspace |
| spelling | um.eprints-114592014-12-09T01:46:51Z http://eprints.um.edu.my/11459/ A comparative study of oil palm and Japanese beech on their fractionation and characterization as treated by supercritical water Varman, M. Saka, S. T Technology (General) Supercritical water treatment (380°C/100 MPa/ 8 s) was applied to extractive-free oil palm trunk and sapwood portion of Japanese beech and their fractionated products were comparatively characterized, for water-soluble portion and water-insoluble portion composed of methanol-soluble portion and methanol-insoluble residue. As a result, the water-soluble portion was determined to be composed of carbohydrate-derived products such as organic acids, sugar decomposed products and lignin- derived products, etc. for both species. The oil palm, however, shows higher yield of organic acids (12.9%) and lignin-derived products (12.2%) compared to Japanese beech, in which organic acids were 4.7% in yield and lignin-derived products 9.8%. The methanol-soluble portion was, on the other hand, mainly composed of lignin-derived products, and in oil palm, these lignin-derived products consisted of both syringyl and guaiacyl-type similar to Japanese beech. The methanol-insoluble residue, was also mainly composed of lignin to be 99.2% in its content in the oil palm, compared to Japanese beech 93.7%. Moreover, the phenolic hydroxyl content deter- mined by aminolysis method was higher in oil palm (36.5 PhOH/100C9) compared to Japanese beech (16.9 PhOH/100C9). Furthermore, an alkaline nitrobenzene oxidation analysis indicated that, the methanol-insoluble residue of the oil palm was less in oxidation products whereas in Japanese beech nitrobenzene oxidation products completely diminished. These lines of evidence suggest that methanol-insoluble residue is composed of lignin with more condensed-type of linkages with high phenolic hydroxyl groups. In addition, the water-soluble portion could be utilized for organic acid production, whereas the methanol-soluble portion and its insoluble residue for phenolic chemical production, with oil palm showing higher potential compared to Japanese beech. Springer Netherlands 2011 Article PeerReviewed application/pdf en cc_by_nc_nd http://eprints.um.edu.my/11459/1/M._Varman_A_Comparative_Study_of_Oil_Palm_and_J__Beech_on_Their_Fractionation_and_Characterization_as_Treated_by_SCW.pdf Varman, M. and Saka, S. (2011) A comparative study of oil palm and Japanese beech on their fractionation and characterization as treated by supercritical water. Waste and Biomass Valorization, 2 (3). pp. 309-315. ISSN 1877-2641, DOI https://doi.org/10.1007/s12649-011-9076-4 <https://doi.org/10.1007/s12649-011-9076-4>. http://link.springer.com/article/10.1007%2Fs12649-011-9076-4 10.1007/s12649-011-9076-4 |
| spellingShingle | T Technology (General) Varman, M. Saka, S. A comparative study of oil palm and Japanese beech on their fractionation and characterization as treated by supercritical water |
| title | A comparative study of oil palm and Japanese beech on their fractionation and characterization as treated by supercritical water |
| title_full | A comparative study of oil palm and Japanese beech on their fractionation and characterization as treated by supercritical water |
| title_fullStr | A comparative study of oil palm and Japanese beech on their fractionation and characterization as treated by supercritical water |
| title_full_unstemmed | A comparative study of oil palm and Japanese beech on their fractionation and characterization as treated by supercritical water |
| title_short | A comparative study of oil palm and Japanese beech on their fractionation and characterization as treated by supercritical water |
| title_sort | comparative study of oil palm and japanese beech on their fractionation and characterization as treated by supercritical water |
| topic | T Technology (General) |
| url | http://eprints.um.edu.my/11459/1/M._Varman_A_Comparative_Study_of_Oil_Palm_and_J__Beech_on_Their_Fractionation_and_Characterization_as_Treated_by_SCW.pdf |
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