SACARIFICACIÓN DEL RESIDUO PROVENIENTE DEL PROCESAMIENTO DE LA JACA (ARTOCARPUS HETEROPHYLLUS) PARA PROPÓSITOS FERMENTATIVOS
In recent decades, interest has been awakened in the use of lignocellulosic waste (renewable resource), consisting of cellulose, hemicellulose and lignin, which can be used as carbohydrate producers through chemical and/or biological processes. Carbohydrates can be used to produce several chemical c...
| Autores: | , |
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| Formato: | tesis de maestría |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | México |
| Recursos: | Universidad Autónoma de Nayarit |
| Repositorio: | Repositorio Institucional Aramara de la UAN |
| Idioma: | español |
| OAI Identifier: | oai:dspace.uan.mx:123456789/2320 |
| Acesso em linha: | http://dspace.uan.mx:8080/jspui/handle/123456789/2320 |
| Access Level: | acceso abierto |
| Palavra-chave: | RESIDUOS, LIGNOCELULÓSICOS, CELULOSA, HEMICELULOSA, LIGNIA, CARBOHIDRATOS CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA [6] |
| Resumo: | In recent decades, interest has been awakened in the use of lignocellulosic waste (renewable resource), consisting of cellulose, hemicellulose and lignin, which can be used as carbohydrate producers through chemical and/or biological processes. Carbohydrates can be used to produce several chemical compounds similar to those obtained from petroleum, such as biofuels, which can be implemented to provide part of the energy demand. The lignocellulosic biomass as waste or by-product can come from diverse sources such as: agriculture, forestry activities, sawmills, agroindustry, among others. The generation of lignocellulosic residues by the processing and commercialization of the jackfruit (Artocarpus heterophyllus) is an alternative for the obtaining of usable sugars. The present work deals with a study on the performance of the lignocellulosic waste of jackfruit for its use as a source of reducing sugars, through the process of acid hydrolysis and enzymatic hydrolysis. The composition of the waste of the jackfruit was 25.36% cellulose, 13.24% hemicellulose and 9.29% lignin. The optimum conditions for acid hydrolysis were 90°C of temperature, 6% (w/w) of sulfuric acid concentration and 120 min of time; obtaining a production of reducing sugars of 9.8104 g/L and a reaction yield of 22.69%. In the case of enzymatic hydrolysis, the optimal conditions of temperature, Rs/l and time for the production of reducing sugars were 40°C, 7.5% and 2 h, respectively, with which a concentration of sugars of 25.26 g/L was obtained, using cellulases and hemicellulases of Aspergillius niger (Sigma Aldrich®), with a reaction yield of 58.48%. The mathematical models studied and applied to the experimental data showed adjustments of 0.9662 for a Rs/l of 7.5%, a value of 0.9886 for a Rs/l of 10% and an adjustment of 0.9881 for an Rs/l of 12.5%. Based on the yields obtained for the optimals conditions, it was determined that the enzymatic hydrolysis was 2.6 times more efficient than the acid hydrolysis. |
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