Photodegradation of sugar cane bagasse acidolysis lignins
Acidolysis lignins of unbleached (SCB) and peroxide bleached (PB-SCB) sugar cane bagasse fibers were submitted to UV irradiation to approach photodegradation of materials made from these fibers. Similar degradation was observed by UV-vis absorption on dilute solution (0.04 g mL-1) of lignins after irradiation at 254 nm (low pressure mercury lamp) or at wavelengths higher than 300 nm (medium pressure mercury lamp filtered by Pyrex glassware). Irradiation of PB-SCB and SCB lignins reveals that the bleaching process increases the sensibility of lignin to light, as revealed by fluorescence emission and UV-vis absorption. In other hand, efficient fragmentation of these two lignins was observed by size exclusion chromatography. 1H and 31P RMN spectroscopic analyses before and after irradiation were performed to observe the behavior of phenolic units in the lignin samples. They show an important decrease of the syringyl, guaiacyl and biphenyl phenolic elements, whereas p-hydroxyphenyl ones are less degraded. This point appears very important to promote the use of sugar cane bagasse fiber base materials when they have to be exposed to daylight.
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Subjects: | Q70 - Traitement des déchets agricoles, sous-produit de sucrerie, bagasse, canne à sucre, lignine, traitement, dégradation, photolyse, http://aims.fao.org/aos/agrovoc/c_7500, http://aims.fao.org/aos/agrovoc/c_776, http://aims.fao.org/aos/agrovoc/c_7501, http://aims.fao.org/aos/agrovoc/c_4329, http://aims.fao.org/aos/agrovoc/c_6195, http://aims.fao.org/aos/agrovoc/c_2159, http://aims.fao.org/aos/agrovoc/c_28496, |
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dig-cirad-fr-5284622024-01-28T13:54:35Z http://agritrop.cirad.fr/528462/ http://agritrop.cirad.fr/528462/ Photodegradation of sugar cane bagasse acidolysis lignins. Ruggiero Reinaldo, Machado Antonio E.H., Gardrat Christian, Hoareau William, Grelier Stéphane, Siegmund Bertrand, Castellan Alain. 2005. Journal of Photochemistry and Photobiology. A, Chemistry, 173 : 150-155.https://doi.org/10.1016/j.jphotochem.2005.01.014 <https://doi.org/10.1016/j.jphotochem.2005.01.014> Photodegradation of sugar cane bagasse acidolysis lignins Ruggiero, Reinaldo Machado, Antonio E.H. Gardrat, Christian Hoareau, William Grelier, Stéphane Siegmund, Bertrand Castellan, Alain eng 2005 Journal of Photochemistry and Photobiology. A, Chemistry Q70 - Traitement des déchets agricoles sous-produit de sucrerie bagasse canne à sucre lignine traitement dégradation photolyse http://aims.fao.org/aos/agrovoc/c_7500 http://aims.fao.org/aos/agrovoc/c_776 http://aims.fao.org/aos/agrovoc/c_7501 http://aims.fao.org/aos/agrovoc/c_4329 http://aims.fao.org/aos/agrovoc/c_6195 http://aims.fao.org/aos/agrovoc/c_2159 http://aims.fao.org/aos/agrovoc/c_28496 Acidolysis lignins of unbleached (SCB) and peroxide bleached (PB-SCB) sugar cane bagasse fibers were submitted to UV irradiation to approach photodegradation of materials made from these fibers. Similar degradation was observed by UV-vis absorption on dilute solution (0.04 g mL-1) of lignins after irradiation at 254 nm (low pressure mercury lamp) or at wavelengths higher than 300 nm (medium pressure mercury lamp filtered by Pyrex glassware). Irradiation of PB-SCB and SCB lignins reveals that the bleaching process increases the sensibility of lignin to light, as revealed by fluorescence emission and UV-vis absorption. In other hand, efficient fragmentation of these two lignins was observed by size exclusion chromatography. 1H and 31P RMN spectroscopic analyses before and after irradiation were performed to observe the behavior of phenolic units in the lignin samples. They show an important decrease of the syringyl, guaiacyl and biphenyl phenolic elements, whereas p-hydroxyphenyl ones are less degraded. This point appears very important to promote the use of sugar cane bagasse fiber base materials when they have to be exposed to daylight. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/528462/1/528462.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1016/j.jphotochem.2005.01.014 10.1016/j.jphotochem.2005.01.014 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=188076 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jphotochem.2005.01.014 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1016/j.jphotochem.2005.01.014 |
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Q70 - Traitement des déchets agricoles sous-produit de sucrerie bagasse canne à sucre lignine traitement dégradation photolyse http://aims.fao.org/aos/agrovoc/c_7500 http://aims.fao.org/aos/agrovoc/c_776 http://aims.fao.org/aos/agrovoc/c_7501 http://aims.fao.org/aos/agrovoc/c_4329 http://aims.fao.org/aos/agrovoc/c_6195 http://aims.fao.org/aos/agrovoc/c_2159 http://aims.fao.org/aos/agrovoc/c_28496 Q70 - Traitement des déchets agricoles sous-produit de sucrerie bagasse canne à sucre lignine traitement dégradation photolyse http://aims.fao.org/aos/agrovoc/c_7500 http://aims.fao.org/aos/agrovoc/c_776 http://aims.fao.org/aos/agrovoc/c_7501 http://aims.fao.org/aos/agrovoc/c_4329 http://aims.fao.org/aos/agrovoc/c_6195 http://aims.fao.org/aos/agrovoc/c_2159 http://aims.fao.org/aos/agrovoc/c_28496 |
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Q70 - Traitement des déchets agricoles sous-produit de sucrerie bagasse canne à sucre lignine traitement dégradation photolyse http://aims.fao.org/aos/agrovoc/c_7500 http://aims.fao.org/aos/agrovoc/c_776 http://aims.fao.org/aos/agrovoc/c_7501 http://aims.fao.org/aos/agrovoc/c_4329 http://aims.fao.org/aos/agrovoc/c_6195 http://aims.fao.org/aos/agrovoc/c_2159 http://aims.fao.org/aos/agrovoc/c_28496 Q70 - Traitement des déchets agricoles sous-produit de sucrerie bagasse canne à sucre lignine traitement dégradation photolyse http://aims.fao.org/aos/agrovoc/c_7500 http://aims.fao.org/aos/agrovoc/c_776 http://aims.fao.org/aos/agrovoc/c_7501 http://aims.fao.org/aos/agrovoc/c_4329 http://aims.fao.org/aos/agrovoc/c_6195 http://aims.fao.org/aos/agrovoc/c_2159 http://aims.fao.org/aos/agrovoc/c_28496 Ruggiero, Reinaldo Machado, Antonio E.H. Gardrat, Christian Hoareau, William Grelier, Stéphane Siegmund, Bertrand Castellan, Alain Photodegradation of sugar cane bagasse acidolysis lignins |
description |
Acidolysis lignins of unbleached (SCB) and peroxide bleached (PB-SCB) sugar cane bagasse fibers were submitted to UV irradiation to approach photodegradation of materials made from these fibers. Similar degradation was observed by UV-vis absorption on dilute solution (0.04 g mL-1) of lignins after irradiation at 254 nm (low pressure mercury lamp) or at wavelengths higher than 300 nm (medium pressure mercury lamp filtered by Pyrex glassware). Irradiation of PB-SCB and SCB lignins reveals that the bleaching process increases the sensibility of lignin to light, as revealed by fluorescence emission and UV-vis absorption. In other hand, efficient fragmentation of these two lignins was observed by size exclusion chromatography. 1H and 31P RMN spectroscopic analyses before and after irradiation were performed to observe the behavior of phenolic units in the lignin samples. They show an important decrease of the syringyl, guaiacyl and biphenyl phenolic elements, whereas p-hydroxyphenyl ones are less degraded. This point appears very important to promote the use of sugar cane bagasse fiber base materials when they have to be exposed to daylight. |
format |
article |
topic_facet |
Q70 - Traitement des déchets agricoles sous-produit de sucrerie bagasse canne à sucre lignine traitement dégradation photolyse http://aims.fao.org/aos/agrovoc/c_7500 http://aims.fao.org/aos/agrovoc/c_776 http://aims.fao.org/aos/agrovoc/c_7501 http://aims.fao.org/aos/agrovoc/c_4329 http://aims.fao.org/aos/agrovoc/c_6195 http://aims.fao.org/aos/agrovoc/c_2159 http://aims.fao.org/aos/agrovoc/c_28496 |
author |
Ruggiero, Reinaldo Machado, Antonio E.H. Gardrat, Christian Hoareau, William Grelier, Stéphane Siegmund, Bertrand Castellan, Alain |
author_facet |
Ruggiero, Reinaldo Machado, Antonio E.H. Gardrat, Christian Hoareau, William Grelier, Stéphane Siegmund, Bertrand Castellan, Alain |
author_sort |
Ruggiero, Reinaldo |
title |
Photodegradation of sugar cane bagasse acidolysis lignins |
title_short |
Photodegradation of sugar cane bagasse acidolysis lignins |
title_full |
Photodegradation of sugar cane bagasse acidolysis lignins |
title_fullStr |
Photodegradation of sugar cane bagasse acidolysis lignins |
title_full_unstemmed |
Photodegradation of sugar cane bagasse acidolysis lignins |
title_sort |
photodegradation of sugar cane bagasse acidolysis lignins |
url |
http://agritrop.cirad.fr/528462/ http://agritrop.cirad.fr/528462/1/528462.pdf |
work_keys_str_mv |
AT ruggieroreinaldo photodegradationofsugarcanebagasseacidolysislignins AT machadoantonioeh photodegradationofsugarcanebagasseacidolysislignins AT gardratchristian photodegradationofsugarcanebagasseacidolysislignins AT hoareauwilliam photodegradationofsugarcanebagasseacidolysislignins AT grelierstephane photodegradationofsugarcanebagasseacidolysislignins AT siegmundbertrand photodegradationofsugarcanebagasseacidolysislignins AT castellanalain photodegradationofsugarcanebagasseacidolysislignins |
_version_ |
1792496273340760064 |