Relevant bibliographies by topics / Lignine sulfatée

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Academic literature on the topic 'Lignine sulfatée'

Author: Grafiati
Published: 25 May 2024
Last updated: 31 July 2025

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Journal articles on the topic "Lignine sulfatée"

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Penín, Lucía, Heiko Lange, Valentín Santos, Claudia Crestini, and Juan Carlos Parajó. "Characterization of Eucalyptus nitens Lignins Obtained by Biorefinery Methods Based on Ionic Liquids." Molecules 25, no. 2 (2020): 425. http://dx.doi.org/10.3390/molecules25020425.

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Eucalyptus nitens wood samples were subjected to consecutive stages of hydrothermal processing for hemicellulose solubilization and delignification with an ionic liquid, i.e., either 1-butyl-3-methylimidazolium hydrogen sulfate or triethylammonium hydrogen sulfate. Delignification experiments were carried out a 170 °C for 10–50 min. The solid phases from treatments, i.e., cellulose-enriched solids, were recovered by centrifugation, and lignin was separated from the ionic liquid by water precipitation. The best delignification conditions were identified on the basis of the results determined fo
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Levdansky, Alexander V., Natalya Yu Vasilyeva, Yuriy N. Malyar, et al. "An Efficient Method of Birch Ethanol Lignin Sulfation with a Sulfaic Acid-Urea Mixture." Molecules 27, no. 19 (2022): 6356. http://dx.doi.org/10.3390/molecules27196356.

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For the first time, the process of birch ethanol lignin sulfation with a sulfamic acid-urea mixture in a 1,4-dioxane medium was optimized experimentally and numerically. The high yield of the sulfated ethanol lignin (more than 96%) and containing 7.1 and 7.9 wt % of sulfur was produced at process temperatures of 80 and 90 °C for 3 h. The sample with the highest sulfur content (8.1 wt %) was obtained at a temperature of 100 °C for 2 h. The structure and molecular weight distribution of the sulfated birch ethanol lignin was established by FTIR, 2D 1H and 13C NMR spectroscopy, and gel permeation
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Malyar, Yuriy Nikolayevich, Natal'ya Yur'yevna Vasil'yeva, Aleksandr Sergeyevich Kazachenko, Galina Pavlovna Skvortsova, Irina Vladimirovna Korol'kova, and Svetlana Alekseyevna Kuznetsova. "SULFATION OF ABIES ETHANOL LIGNIN WITH COMPLEXES OF SULFUR TRIOXIDE WITH 1,4-DIOXANE AND PYRIDINE." chemistry of plant raw material, no. 3 (October 22, 2020): 5–15. http://dx.doi.org/10.14258/jcprm.2020036931.

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In this work, we optimized the process of sulfating abies ethanol lignin with complexes of sulfuric anhydride with pyridine and 1,4-dioxane. Experimentally found are the conditions for the implementation of the process of sulfation of abies ethanol lignin by complexes of sulfur trioxide with 1,4-dioxane and pyridine, providing a high sulfur content (12.0–12.6%). It was shown that a high sulfur content of 12.0–13.5% (mass.) in the obtained ethanol lignin sulfate is achieved when the ratio of the amount of chlorosulfonic acid to the amount of abies ethanol lignin is 20.22 : 1 mmol : g and the du
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Arrieta, Alberto Albis, Ever Ortiz Muñoz, Ismael Piñeres Ariza, Juan Osorio Cardozo, and Jennifer Monsalvo Morales. "Catalytic effect of ferric sulfate and zinc sulfate on lignin pyrolysis." Applied Chemical Engineering 5, no. 1 (2022): 59. http://dx.doi.org/10.24294/ace.v5i1.1449.

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The effect of zinc sulfate and ferric sulfate on the pyrolysis process of lignin was studied at three different heating rates by using the thermogravimetric analysis technique. It was found that the pyrolysis of pure lignin is barely affected with the change of heating rates between 10 to 100 °C/min, which is unexpected because of the kinetic nature of pyrolysis. The pyrolysis kinetics of this major component of biomass was studied by using three fitting methods: the differential method with reaction order model n, the isoconversional method, and the distribution of activation energies model,
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Belesov, Artyom V., Anton V. Ladesov, Ilya I. Pikovskoi, Anna V. Faleva, and Dmitry S. Kosyakov. "Characterization of Ionic Liquid Lignins Isolated from Spruce Wood with 1-Butyl-3-methylimidazolium Acetate and Methyl Sulfate and Their Binary Mixtures with DMSO." Molecules 25, no. 11 (2020): 2479. http://dx.doi.org/10.3390/molecules25112479.

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Ionic liquids (ILs) based on 1-butyl-3-methylimidazolium (bmim) cation have proved to be promising solvents for the fractionation of plant biomass with the production of cellulose and lignin. This study deals with the characterization of lignins isolated from coniferous (spruce) wood using [bmim]OAc and [bmim]MeSO4 ionic liquids and their binary mixtures with DMSO (80:20). Molecular weight distributions, functional composition, and structural features of IL lignins were studied by size-exclusion chromatography, NMR spectroscopy (1D and 2D) and atmospheric pressure photoionization high-resoluti
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Albis Arrieta, Alberto Ricardo, Ever Ortiz Muñoz, Ismael Enrique Piñeres Ariza, Juan Sebastián Osorio Cardozo, and Jennifer Monsalvo Morales. "Efecto catalítico del sulfato de zinc y el sulfato férrico en la pirólisis de la lignina/Catalytic effect of zinc sulfate and ferric sulfate on lignin pyrolysis." Prospectiva 16, no. 1 (2017): 41–50. http://dx.doi.org/10.15665/rp.v16i1.1397.

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Recurriendo al uso de la técnica análisis termogravimétrico, se estudió el efecto del sulfato de zinc y del sulfato férrico en el proceso de pirólisis de la lignina a tres velocidades de calentamiento. Se encontró que la pirólisis de la lignina pura se afecta muy poco con el cambio de las velocidad de calentamiento entre 10 y 100 °C/min, lo cual es inesperado por la naturaleza cinética de la pirólisis. La cinética de pirólisis de este componente de la biomasa fue estudiada teniendo en cuenta tres métodos de ajuste: el método diferencial con modelo de orden de reacción n, el método isoconversio
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Martínez-Cortés, Teresa, Federico Pomar, and Esther Novo-Uzal. "Evolutionary Implications of a Peroxidase with High Affinity for Cinnamyl Alcohols from Physcomitrium patens, a Non-Vascular Plant." Plants 10, no. 7 (2021): 1476. http://dx.doi.org/10.3390/plants10071476.

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Physcomitrium (Physcomitrella) patens is a bryophyte highly tolerant to different stresses, allowing survival when water supply is a limiting factor. This moss lacks a true vascular system, but it has evolved a primitive water-conducting system that contains lignin-like polyphenols. By means of a three-step protocol, including ammonium sulfate precipitation, adsorption chromatography on phenyl Sepharose and cationic exchange chromatography on SP Sepharose, we were able to purify and further characterize a novel class III peroxidase, PpaPrx19, upregulated upon salt and H2O2 treatments. This per
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Kazachenko, Aleksandr S., Feride Akman, Natalya Yu Vasilieva, et al. "Sulfation of Wheat Straw Soda Lignin with Sulfamic Acid over Solid Catalysts." Polymers 14, no. 15 (2022): 3000. http://dx.doi.org/10.3390/polym14153000.

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Soda lignin is a by-product of the soda process for producing cellulose from grassy raw materials. Since a method for the industrial processing of lignin of this type is still lacking, several research teams have been working on solving this problem. We first propose a modification of soda lignin with sulfamic acid over solid catalysts. As solid catalysts for lignin sulfation, modified carbon catalysts (with acid sites) and titanium and aluminum oxides have been used. In the elemental analysis, it is shown that the maximum sulfur content (16.5 wt%) was obtained with the Sibunit-4® catalyst oxi
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Ferreira, Bruno G., Renan Falcioni, Lubia M. Guedes, et al. "Preventing False Negatives for Histochemical Detection of Phenolics and Lignins in PEG-Embedded Plant Tissues." Journal of Histochemistry & Cytochemistry 65, no. 2 (2016): 105–16. http://dx.doi.org/10.1369/0022155416677035.

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Polyethylene glycol (PEG) is a low-cost and advantageous embedding medium, which maintains the majority of cell contents unaltered during the embedding process. Some hard or complex plant materials are better embedded in PEG than in other usual embedding media. However, the histochemical tests for phenolics and lignins in PEG-embedded plant tissues commonly result in false negatives. We hypothesize that these false negatives should be prevented by the use of distinct fixatives, which should avoid the bonds between PEG and phenols. Novel protocols for phenolics and flavanols detection are effic
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Rotondo, Felipe, Rodrigo Coniglio, Leandro Cantera, Ignacio Di Pascua, Leonardo Clavijo, and Andrés Dieste. "Lignin-based coatings for controlled P-release fertilizer consisting of granulated simple superphosphate." Holzforschung 72, no. 8 (2018): 637–43. http://dx.doi.org/10.1515/hf-2017-0176.

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AbstractA novel lignin-based slow release fertilizer with low environmental impact has been developed. More precisely, a granulated simple superphosphate fertilizer, consisting of calcium phosphate monobasic [Ca(H2PO4)2·H2O] and gypsum (CaSO4·2H2O) was coated with modified kraft lignins and the diffusion of phosphorus was observed as a function of time. The lignin was hydroxymethylated with formaldehyde and subsequently cross-linked with phenol-formaldehyde resin resulting in HML-PF as coating. Moreover, coating films were prepared from a mixture of acetylated lignin (Lac) and acetylated cellu
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Dissertations / Theses on the topic "Lignine sulfatée"

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Lorquin, Faustine. "Développement de préparations solaires éco-participatives et de nouvelle génération : utilisation de la lignine comme booster de SPF et production d'une mélanine de substitution." Electronic Thesis or Diss., Aix-Marseille, 2020. http://theses.univ-amu.fr.lama.univ-amu.fr/201215_LORQUIN_365ob597het970zyydtn580hoga_TH.pdf.

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Ce travail sur l’amélioration de la protection solaire suivant un concept éco-participatif propose 2 parties, (i) l’élaboration d’une formulation simple, (ii) la synthèse d’une mélanine de substitution. La formulation contient seulement 8 ingrédients, dont 2 filtres organiques sélectionnés sur leur photostabilité, caractéristiques physicochimiques, et l'absence d'impact (santé, écosystèmes), le BEMT et le DHHB. Une protection totale est atteinte par l’addition de lignine sulfatée (LiS), polymère largement disponible, non toxique, antiradicalaire et soluble dans l’eau. Des méthodologies expérim
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Mehta, Akul. "Synthetic, Sulfated, Lignin-Based Anticoagulants." VCU Scholars Compass, 2014. http://scholarscompass.vcu.edu/etd/598.

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Chemoenzymatically synthesized low molecular weight lignin polymers have been previously found to be potent inhibitors of a number of serine proteases via allosteric mechanisms targeting heparin binding sites. Herein, we describe the creation of synthetic sulfated β-O4 lignin (SbO4L) polymer, which is more homogenous compared to previous lignins with respect to its inter-monomeric linkage. SbO4L is a selective inhibitor of thrombin and plasmin. SbO4L was found to act via a unique mechanism targeting thrombin exosite 2 in a manner similar to platelet glycoprotein Ibα (GPIbα). Advanced hemostasi
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Ko, Jae-Jung. "Biodegradation of high molecular weight lignin under sulfate reducing conditions." 京都大学 (Kyoto University), 2009. http://hdl.handle.net/2433/124527.

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Oliveira, Caroline Tirolla. "Estudos de separação de lignina do licor negro kraft em diferentes condições experimentais: caracterização e fracionamento." Universidade Federal de São Carlos, 2016. https://repositorio.ufscar.br/handle/ufscar/8797.

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Submitted by Milena Rubi (milenarubi@ufscar.br) on 2017-06-01T13:12:06Z No. of bitstreams: 1 OLIVEIRA_Caroline_2016.pdf: 20263298 bytes, checksum: b9231bba4d6cfab2b96f7832a2dca959 (MD5)<br>Approved for entry into archive by Milena Rubi (milenarubi@ufscar.br) on 2017-06-01T13:12:14Z (GMT) No. of bitstreams: 1 OLIVEIRA_Caroline_2016.pdf: 20263298 bytes, checksum: b9231bba4d6cfab2b96f7832a2dca959 (MD5)<br>Approved for entry into archive by Milena Rubi (milenarubi@ufscar.br) on 2017-06-01T13:12:22Z (GMT) No. of bitstreams: 1 OLIVEIRA_Caroline_2016.pdf: 20263298 bytes, checksum: b9231bba4d6cfab
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Schorr, Diane. "Caractérisation et modification des lignines industrielles." Doctoral thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25365.

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Les lignines sont des polymères naturels et renouvelables. C’est le polymère le plus abondant sur la terre après la cellulose. De nos jours, les lignines sont sous-exploitées et seulement 2 % de la lignine est valorisée par an, leur application capital restant comme combustible dans les industries papetières pour la production d'énergie. Au Québec, 130 000 tonnes de liqueur noire contenant de la lignine pourraient être extraites par an afin de les valoriser, sans perturber la production dans ces industries papetières. Sa valorisation pourrait contribuer à créer de nouveaux produits à valeur aj
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Polowski, Natascha Vigdis. "Modelagem e analise de digestores Kraft descontinuo." [s.n.], 2004. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267689.

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Orientadores: Rubens Maciel Filho, Eduardo Coselli Vasco de Toledo<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-08-04T01:49:23Z (GMT). No. of bitstreams: 1 Polowski_NataschaVigdis_M.pdf: 4178236 bytes, checksum: 955c3738e418197b8c3759e9d8e7d75f (MD5) Previous issue date: 2004<br>Resumo: Em nível global, a indústria de celulose e papel está começando a experimentar os beneficios dos recentes desenvolvimentos na área de modelagem e controle de processos.Técnicas avançadas de simulação e controle oferecem ferr
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Qiao, Ming. "Fundamental study of kraft pulp kappa uniformity /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/5603.

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Thakkar, Jay N. "DISCOVERY OF LIGNIN SULFATE AS A POTENT INHIBITOR OF HSV ENTRY INTO CELLS." VCU Scholars Compass, 2006. http://scholarscompass.vcu.edu/etd/711.

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The herpes virus family consists of more than hundred members that infect organisms, of which eight, differing markedly in the biology are known to infect humans. HSV- I is the most common one, causing oral lesions and sporadic encephalitis. These infections are highly prevalent affecting at least one in three individuals in the United States.The entry of the herpes virus into the cell is a two-step process. The initial step involves the cell surface heparan sulfate and glycoproteins in the viral envelope which enables the virus to penetrate into the cell. The second step is the fusion step. D
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Verghese, Jenson. "SYNTHESIS AND BIOCHEMICAL STUDIES ON SULFATED MONOMERS OF LOW MOLECULAR WEIGHT LIGNINS." VCU Scholars Compass, 2009. http://scholarscompass.vcu.edu/etd/1868.

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Anticoagulants are used as the first line therapy for management and prevention of thrombotic disorders. Thrombin and factor Xa have been the prime targets for regulation of the coagulation cascade. In this work, a small library of 17 benzofuran derivatives were synthesized and screened against thrombin and factor Xa. The derivatives that displayed inhibitory potential were docked on the exosite-II of factor Xa using a docking protocol that was developed in our research group. These compounds were based on the β-5 structural unit found in the oligomer -'CDSO3‘, which was prepared in our lab an
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Zou, Haixuan. "Effect of Kraft Pulping on Oxygen Delignification." Fogler Library, University of Maine, 2002. http://www.library.umaine.edu/theses/pdf/ZouH2002.pdf.

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Books on the topic "Lignine sulfatée"

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Bezúch, Bohuslav. Structure of hardwood lignin and its behaviour in kraft pulping. Paper and Pulp Research Institute, 1987.

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Book chapters on the topic "Lignine sulfatée"

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Setiati, Rini, Septoratno Siregar, and Deana Wahyuningrum. "Laboratory Optimization Study of Sulfonation Reaction toward Lignin Isolated from Bagasse." In Biomass [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.93662.

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Bagasse is scientifically defined as waste from the extraction of sugarcane liquid after the grinding process. Bagasse is biomass which is used as raw material to be processed into surfactants. Bagasse fiber cannot be dissolved in water because it consists mostly of cellulose, pentosane and lignin. The optimum conditions for obtaining the highest yield and the best conversion of bagasse to lignin were achieved when used 80 mesh bagasse and 3 M NaOH as a hydrolysis agent. Then lignin is reacted with 0.25 sodium bisulfite to the surfactant sodium lignosulfonate. Lignin and sodium lignosulfonate
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Setiati, Rini, Aqlyna Fatahanissa, Shabrina Sri Riswati, Septoratno Siregar, and Deana Wahyuningrum. "Potential of Bagasse as Raw Material for Lignosulfonate Surfactant." In Sugarcane [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96373.

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Anionic surfactants are generally used in surfactant injections because they are good, resistant in storage and stable. Furthermore, Commercially, anions are produced in the form of carboxylates, sulfates, sulfonates, phosphates, or phosphonates. The surfactants used in the process of implementing Enhanced Oil Recovery (EOR) are generally petroleum-based, such as Petroleum Sulfonate. Therefore, an increase in oil price, leads to an increase in the price of surfactant and the operational costs becomes relatively expensive. Lignosulfonate is a type of anionic surfactant which is made with lignin
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Kaushalya Mendis Abeysekera, Walimuni Prabhashini, Walimuni Kanchana Subhashini Mendis Abeysekera, Danushika Charyangi Manatunga, and Sankalya Ambagaspitiye. "Anti-Aging Properties of Seaweeds." In The Role of Seaweeds in Blue Bioeconomy. BENTHAM SCIENCE PUBLISHERS, 2024. http://dx.doi.org/10.2174/9789815223644124010013.

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Aging is a natural phenomenon that occurs due to diverse changes in cells and tissues over time, and it is impossible to halt or reverse the process. However, extrinsic skin aging, caused by environmental factors, is largely preventable. Natural products have long been used in skin anti-aging treatments. Seaweeds are multicellular, large-sized marine organisms that have a variety of economic values. They are used in cosmetics, cosmeceuticals, and nutricosmetics due to their versatility and richness in valuable bioactive compounds and other nutrients found in different species of seaweed. This
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Conference papers on the topic "Lignine sulfatée"

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Mhd Ramle, Sitti Fatimah Binti, Mohammad Aiman Bin Mohd Zawawi, Zubaidah Aimi Binti Abdul Hamid, Nur Sakinah Bt Mohamed Tamat, and Nadiah Bte Ameram. "Characterization of Cellulose Bio-Foam (CBF) Derived from Bamboo." In International Conference on X-Rays and Related Techniques in Research and Industry 2023. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-f0ooaa.

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Synthetic foam will negatively impact the environment and living beings. To solve this issue, synthetic materials may be substituted with more eco-friendly materials, such as foam derived from bamboo. The structure of bamboo and the substances inside make it highly useful for various applications. This research produced a biodegradable foam from the difference in weight fraction of cellulose derived from bamboo. The Kraft pulping process has been used to remove lignin and to get cellulose from bamboo (Bambusa vulgaris). The foam substance was produced by combining starch and cellulose derived
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Kozlov, I. A., V. A. Pashinin, and P. I. Sukhov. "Saving Humanity from Global Warming. New Ecologically Balanced Catalytic Method for Processing of Renewable Plant Raw Materials: Quantitative 1H and 13C NMR Spectroscopy." In International scientific and practical conference “Smart cities and sustainable development of regions” (SMARTGREENS 2024). Crossref, 2025. https://doi.org/10.63550/iceip.2025.1.1.131.

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The most high-tonnage product of processing vegetable raw materials is cellulose. Currently, sulfate cooking is the most common method of pulp production. However, this method is extremely toxic and has a huge negative impact on the environment. An alternative to this is a catalytic process. Catalysts reduce harmful emissions into the atmosphere by up to 80%. During cellulose cooking, the most important chemical reaction is the destruction (hydrolysis) of lignin macromolecules. A comparative study of the macromolecular structure of pine dioxane lignin and lignins obtained by various methods of
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