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Mostrando publicaciones 1-12 de 12
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Comparative study of three dyes’ adsorption onto activated carbon from chenopodium quinoa willd and quillaja saponaria
Abril, Diana ; Ferrer, Victor; Mirabal-Gallardo, Yaneris; Cabrera-Barjas, Gustavo; Segura, Cristina; Marican, Adolfo; Pereira, Alfredo; Durán-Lara, Esteban F.; Valdés, Oscar (2022)The present study shows porous activated carbon obtained from Chenopodium quinoa Willd and Quillaja saponaria and their use as potential adsorbents to remove three types of dyes from aqueous solutions. The adsorption results ...
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Computational study on temperature driven structure–function relationship of polysaccharide producing bacterial lycosyl transferase enzyme
González-Faune, Patricio; Sánchez-Arévalo, Ignacio; Sarkar, Shrabana; Majhi, Krishnendu; Bandopadhyay, Rajib; Cabrera-Barjas, Gustavo; Gómez, Aleydis; Banerjee, Aparna (2021)Glycosyltransferase (GTs) is a wide class of enzymes that transfer sugar moiety, playing a key role in the synthesis of bacterial exopolysaccharide (EPS) biopolymer. In recent years, increased demand for bacterial EPSs has ...
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Development of eco-friendly polyurethane foams based on Lesquerella fendleri (A. Grey) oil-based polyol
Contreras-González, Jorge; Valdés-Lizama, Oscar; Mirabal-Gallardo, Yaneris; De la Torre, Alexander F.; Navarrete, José; Lisperguer, Justo; Durán-Lara, Esteban F.; Santos, Leonardo S.; Nachtigall, Fabiane M.; Cabrera-Barjas, Gustavo; abril, diana (2020)In this study, we investigated the potential of polyurethane foams (LPUF) prepared from Lesquerella fendleri (A. Grey) oil-derived polyol to use as an ecological and cheap substitute for the petroleum-based polyurethane ...
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Effect of cellulose nanofibrils on vancomycin drug release from chitosan nanocomposite films
Cabrera-Barjas, Gustavo; Becheran, Liliam; Valdés, Oscar; Giordano, Ady; Segura-del Río, Rodrigo; Bravo-Arrepol, Gastón; Durán-Lara, Esteban F.; Cea, Juan; Berg, Alex; Castaños, Johana; Rodríguez-Llamazares, Saddys; Fuentes, Gastón; Katsarov, Plamen; Lukova, Paolina; Delattre, Cédric (2023)Overuse of antibiotic drugs usually leads to the further development of resistance to targeted bacteria. In this context, a controlled release system could be a solution to achieve higher drug efficiency without overdosing ...
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Extremophilic exopolysaccharides: biotechnologies and wastewater remediation
Banerjee, Aparna; Sarkar, Shrabana; Govil, Tanvi; González-Faune, Patricio; Cabrera-Barjas, Gustavo; Bandopadhyay, Rajib; Salem, David R.; Sani, Rajesh K. (2021)Various microorganisms thrive under extreme environments, like hot springs, hydrothermal vents, deep marine ecosystems, hyperacid lakes, acid mine drainage, high UV exposure, and more. To survive against the deleterious ...
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Film dressings based on hydrogels: Simultaneous and sustained-release of bioactive compounds with wound healing properties
Ávila-Salas, Fabián; Marican, Adolfo; Pinochet, Soledad; Carreño, Gustavo; Valdés-Lizama, Oscar; Venegas, Bernardo; Donoso-Torres, Wendy; Cabrera-Barjas, Gustavo; Vijayakumar, Sekar; Durán-Lara, Esteban F. (2019)This research proposes the rational modeling, synthesis and evaluation of film dressing hydrogels based on polyvinyl alcohol crosslinked with 20 different kinds of dicarboxylic acids. These formulations would allow the ...
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Rational design of hydrogels for cationic antimicrobial peptide delivery: a molecular modeling approach
Pereira, Alfredo; Valdés-Muñoz, Elizabeth; Marican, Adolfo; Cabrera-Barjas, Gustavo; Vijayakumar, Sekar; Valdés, Oscar; Rafael, Diana; Andrade, Fernanda; Abaca, Paulina; Bustos, Daniel; Durán-Lara, Esteban F. (2022)In light of the growing bacterial resistance to antibiotics and in the absence of the development of new antimicrobial agents, numerous antimicrobial delivery systems over the past decades have been developed with the aim ...
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Sustained release of linezolid from prepared hydrogels with polyvinyl alcohol and aliphatic dicarboxylic acids of variable chain lengths
Carreño, Gustavo; Marican, Adolfo; Vijayakumar, Sekar; Valdés-Lizama, Oscar; Cabrera-Barjas, Gustavo; Castaño, Johanna; Durán-Lara, Esteban F. (2020)A series of hydrogels with a specific release profile of linezolid was successfully synthesized. The hydrogels were synthesized by cross-linking polyvinyl alcohol (PVA) and aliphatic dicarboxylic acids, which include ...
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Utilization of industrial by-product fungal biomass from Aspergillus niger and Fusarium culmorum to obtain biosorbents for removal of pesticide and metal ions from aqueous solutions
Cabrera-Barjas, Gustavo; Gallardo, Francisco; Nesic, Aleksandra; Taboada, Edelio; Marican, Adolfo; Mirabal-Gallardo, Yaneris; Avila-Salas, Fabian; Delgado, Nacarid; de Armas-Ricard, Merly; Valdés-Lizama, Oscar (2020)In this work, Aspergillus niger and Fusarium culmorum cell wall by-products were chosen as microbial sources for chitin and chitosan production. Both polysaccharides were characterized by FTIR and 13C-CPMAS NMR, but GPC ...
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Utilization of marine waste to obtain β-chitin nanofibers and films from giant Humboldt squid dosidicus gigas
Cabrera-Barjas, Gustavo; González, Cristian; Nesic, Aleksandra; Marrugo, Kelly P.; Gómez, Oscar; Delattre, Cédric; Valdés-Lizama, Oscar; Yin, Heng; Bravo, Gaston; Cea, Juan (2021)β-chitin was isolated from marine waste, giant Humboldt squid Dosidicus gigas, and further converted to nanofibers by use of a collider machine under acidic conditions (pH 3). The FTIR, TGA, and NMR analysis confirmed the ...
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Valorization of food waste to produce intelligent nanofibrous β-chitin films
Cabrera-Barjas, Gustavo; Radovanović, Neda; Bravo, Gaston; De la Torre, Alexander F.; Valdés, Oscar; Nesic, Aleksandra (2021)The efficient use of waste from food processing industry is one of the innovative approaches within sustainable development, because it can be transferred into added value products, which could improve economic, energetic ...
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Value-added long-chain aliphatic compounds obtained through pyrolysis of phosphorylated chitin
Cabrera-Barjas, Gustavo; Jimenez, Romel; Romero, Romina; Valdes, O.; Nesic, Aleksandra; Hernández-García, Ruber; Neira, Andrónico; Alejandro-Martín, Serguei; De la Torre, Alexander F. (2023)In this work, chitin, as a biobased polymer, is used as a precursor to obtain a phosphorylated derivatives. The influence of the different degree of phosphorylation in chitin on pyrolysis pattern was investigated. In order ...