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您的检索式：作者名="Jalel Labidi"
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| 1 | Lignin depolymerization for phenolic monomers production by sustainable processes显示文摘Biomass wastes(almond shell and olive tree pruning) were used in this work as raw materials for the extraction of high purity lignin by different delignification methods. A pretreatment stage was carried out to remove the major hemicelluloses content in the solid feedstocks. Afterward, two sulfur-free pulping processes(soda and organosolv) were applied to extract the largest fraction of lignin. The extracted lignin contained in the liquors was isolated using selective precipitation methods to design a tailor-made technique for obtaining high-purity lignin(in all cases more 90% of purity was reached). Soda process allowed the extraction of more lignin(around 40%–47%) than organosolv process(lower than 20%) regardless of the lignocellulosic source employed.Once the different lignin samples were isolated and characterized, they were depolymerized for the obtaining of small phenolic compounds. Three main streams were produced after the reaction: phenolic enriched oil, residual lignin and coke. After the purification of these fractions, their quantifications and characterization were conducted.The most abundant product of the reaction was residual lignin generated by the undesirable repolymerization of the initial lignin with yields around 30%–45%. The yield of the stream enriched in phenolic oil was higher than 20%. Coke, the lowest added-value product, presented a yield lower than 12% in all the cases. Lignin from organosolv presented higher phenolic oil yields, mainly due to their lower molecular size. This parameter was, thus, considered a key factor to obtain higher yields. | Javier Fernández-Rodríguez Xabier Erdocia Cristina Sánchez María González Alriols Jalel Labidi | 2017 | Journal of Energy Chemistry2017，26，4： | 4 |
| 2 | Study of the antioxidant capacity of Miscanthus sinensis lignins显示文摘 | Araceli García Ana Toledano Maria ángeles Andrés Jalel Labidi | 2010 | Process Biochemistry2010，，6： | 1 |
| 3 | Conversion of Waste Parasitic Insect(Hylobius abietis L.)into Antioxidative,Antimicrobial and Biodegradable Films显示文摘Hylobius abietis is a plant parasitic insect belonging to the order Coleoptera and which causes severe damages to coniferous forests in Northern and Eastern Europe.This current study is aimed to provide a new viewpoint into the waste of this insect by producing chitosan.Dry insect corpses consisted of 27.9%chitin and 86.2%of the chitin was converted into the chitosan.FT-IR spectra analyses confirmed the purity and the deacetylation degree of the produced chitosan(molecular weight of chitosan;7.3 kDa).This chitosan exhibited antimicrobial activity against 18 bacterial strains.Further,biodegradable chitosan composite films with β-carotene were produced.Antioxidant activity of chitosan films were found to be higher than chitosan gels;andβ-carotene incorporation further increased the antioxidative properties of the chitosan films.This study demonstrated that the waste of parasitic insect like H.abietis can be evaluated as a source for production of biodegradable and edible chitosan-based films for applications in food coating. | Murat Kaya Idris Sargin Povilas Mulerčikas Jalel Labidi Asier M.Salaberria Yavuz S.Cakmak Sonata Kazlauskaitė Demet Erdonmez Vykintas Baublys | 2019 | Journal of Renewable Materials2019，7，3： | 0 |
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