Lignin reinforcement of urea-crosslinked starch films for reduction of starch biodegradability to improve slow nitrogen release properties under natural aerobic soil condition
The urea-crosslinked starch (UcS) film has a major drawback of very rapid biodegradability when applied as slow release fertilizer in soil. Lignin reinforcement of the UcS was used to prepare composite films, aimed to reduce the starch biodegradability and slow the release of nitrogen in aerobic soi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Walter de Gruyter
2016
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| Online Access: | http://psasir.upm.edu.my/id/eprint/47466/1/Lignin%20reinforcement%20of%20urea-crosslinked%20starch%20films%20for%20reduction%20of%20starch%20biodegradability%20to%20improve%20slow%20nitrogen%20release%20properties%20under%20natural%20aerobic%20soil%20condition.pdf |
| _version_ | 1825929811176980480 |
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| author | Majeed, Zahid Mansor, Nurlidia Man, Zakaria Abd. Wahid, Samsuri |
| author_facet | Majeed, Zahid Mansor, Nurlidia Man, Zakaria Abd. Wahid, Samsuri |
| author_sort | Majeed, Zahid |
| collection | UPM |
| description | The urea-crosslinked starch (UcS) film has a major drawback of very rapid biodegradability when applied as slow release fertilizer in soil. Lignin reinforcement of the UcS was used to prepare composite films, aimed to reduce the starch biodegradability and slow the release of nitrogen in aerobic soil condition. Study results revealed that mineralization of the composite films was delayed from 6.40 to 13.58% more than UcS film. Inhibition of composite films mixing with soil, the Michaelis-Menten reaction rates for α-amylase were inhibited ~1.72–2.03 times whereas the Michaelis-Menten reaction rates for manganese peroxidase were increased ~1.07–1.41 times compared to UcS film. Saccharides–glucose, maltose and maltotriose demonstrated that their rates of formation (zero-order reaction) and depletion (first-order reaction); both were slowed more in aerobic soil which received the composite films. Increasing of lignin in composite films, the acid to aldehyde ratios of vanillyl and syringyl phenols of the lignin declined from 1.18 to 1.17 (~0.76%) and 1.59–1.56 (~1.78%), respectively. The diffusivity of nitrogen was effectively slowed 0.66–0.94 times by the lignin in composite films and showed a “Fickian diffusion” mechanism (release exponent n=0.095–0.143). |
| first_indexed | 2024-03-06T09:02:10Z |
| format | Article |
| id | upm.eprints-47466 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T09:02:10Z |
| publishDate | 2016 |
| publisher | Walter de Gruyter |
| record_format | dspace |
| spelling | upm.eprints-474662016-05-20T01:44:52Z http://psasir.upm.edu.my/id/eprint/47466/ Lignin reinforcement of urea-crosslinked starch films for reduction of starch biodegradability to improve slow nitrogen release properties under natural aerobic soil condition Majeed, Zahid Mansor, Nurlidia Man, Zakaria Abd. Wahid, Samsuri The urea-crosslinked starch (UcS) film has a major drawback of very rapid biodegradability when applied as slow release fertilizer in soil. Lignin reinforcement of the UcS was used to prepare composite films, aimed to reduce the starch biodegradability and slow the release of nitrogen in aerobic soil condition. Study results revealed that mineralization of the composite films was delayed from 6.40 to 13.58% more than UcS film. Inhibition of composite films mixing with soil, the Michaelis-Menten reaction rates for α-amylase were inhibited ~1.72–2.03 times whereas the Michaelis-Menten reaction rates for manganese peroxidase were increased ~1.07–1.41 times compared to UcS film. Saccharides–glucose, maltose and maltotriose demonstrated that their rates of formation (zero-order reaction) and depletion (first-order reaction); both were slowed more in aerobic soil which received the composite films. Increasing of lignin in composite films, the acid to aldehyde ratios of vanillyl and syringyl phenols of the lignin declined from 1.18 to 1.17 (~0.76%) and 1.59–1.56 (~1.78%), respectively. The diffusivity of nitrogen was effectively slowed 0.66–0.94 times by the lignin in composite films and showed a “Fickian diffusion” mechanism (release exponent n=0.095–0.143). Walter de Gruyter 2016 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/47466/1/Lignin%20reinforcement%20of%20urea-crosslinked%20starch%20films%20for%20reduction%20of%20starch%20biodegradability%20to%20improve%20slow%20nitrogen%20release%20properties%20under%20natural%20aerobic%20soil%20condition.pdf Majeed, Zahid and Mansor, Nurlidia and Man, Zakaria and Abd. Wahid, Samsuri (2016) Lignin reinforcement of urea-crosslinked starch films for reduction of starch biodegradability to improve slow nitrogen release properties under natural aerobic soil condition. e-Polymers, 16 (2). pp. 159-170. ISSN 2197-4586; ESSN: 1618-7229 http://www.degruyter.com/view/j/epoly.2016.16.issue-2/epoly-2015-0231/epoly-2015-0231.xml 10.1515/epoly-2015-0231 |
| spellingShingle | Majeed, Zahid Mansor, Nurlidia Man, Zakaria Abd. Wahid, Samsuri Lignin reinforcement of urea-crosslinked starch films for reduction of starch biodegradability to improve slow nitrogen release properties under natural aerobic soil condition |
| title | Lignin reinforcement of urea-crosslinked starch films for reduction of starch biodegradability to improve slow nitrogen release properties under natural aerobic soil condition |
| title_full | Lignin reinforcement of urea-crosslinked starch films for reduction of starch biodegradability to improve slow nitrogen release properties under natural aerobic soil condition |
| title_fullStr | Lignin reinforcement of urea-crosslinked starch films for reduction of starch biodegradability to improve slow nitrogen release properties under natural aerobic soil condition |
| title_full_unstemmed | Lignin reinforcement of urea-crosslinked starch films for reduction of starch biodegradability to improve slow nitrogen release properties under natural aerobic soil condition |
| title_short | Lignin reinforcement of urea-crosslinked starch films for reduction of starch biodegradability to improve slow nitrogen release properties under natural aerobic soil condition |
| title_sort | lignin reinforcement of urea crosslinked starch films for reduction of starch biodegradability to improve slow nitrogen release properties under natural aerobic soil condition |
| url | http://psasir.upm.edu.my/id/eprint/47466/1/Lignin%20reinforcement%20of%20urea-crosslinked%20starch%20films%20for%20reduction%20of%20starch%20biodegradability%20to%20improve%20slow%20nitrogen%20release%20properties%20under%20natural%20aerobic%20soil%20condition.pdf |
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