GINAPS

Sulfanilic acid-modified chitosan mini-spheres and their application for lysozyme purification from egg white

A cation exchange matrix with zwitterionic and multimodal properties was synthesized by a simple reaction sequence coupling sulfanilic acid to a chitosan based support. The novel chromatographic matrix was physico-chemically characterized by ss-NMR …

HPLC-UV platform for trace analysis of three isomeric mononitrophenols in water with chitin based solid phase extraction

A method is described for simultaneous determination of trace levels of three isomeric mononitrophenols (MNPs) in environmental water samples using chitin (cheap, effective, biocompatible, green and safe) based solid phase extraction and …

A new look at the halogenation of porphyrins

The present study describes the selective halogenation at the β-or meso-position of the porphyrin macrocycle. The reactions of deuteroporphyrin IX dimethyl ester, mesoporphyrin III dimethyl ester and their Cu(II) and Ni(II) complexes with …

Induction of ABCG2/BCRP restricts the distribution of zidovudine to the fetal brain in rats

Safety concerns for fetus development of zidovudine (AZT) administration as prophylaxis of vertical transmission of HIV persist. We evaluated the participation of the ATP-binding cassette efflux transporter ABCG2 in the penetration of AZT into the …

Phosphorus adsorption by a modified polyampholyte-diatomaceous earth material containing imidazole and carboxylic acid moieties: Batch and dynamic studies

The aim of this study was to investigate phosphorus removal in water by using a polyampholyte obtained by the reaction of methacrylic acid, ethylene glycol diglycidyl ether and imidazole by a one step synthesis, mixed with diatomaceous earth. The …

Sustainable and smart keratin hydrogel with pH-sensitive swelling and enhanced mechanical properties

Protein based hydrogels are a very interesting type of biomaterials with many probed strengths related to their source and chemical structure. Biocompatibility and biodegradability are accompanied by affordability when it comes to low cost sources. …

Thermo-responsive microgels based on encapsulated carbon quantum dots

In this work carbon quantum dot (CQD) nanoparticles are synthesized from d-lactose using a hydrothermal method and then they are coated with polyethylene glycol (CQDs@PEG). These particles exhibit a monodisperse spherical morphology with an average …

Thiabendazole adsorption on montmorillonite, octadecyltrimethylammonium- and Acremonium sp.-loaded products and their copper complexes

This study is a preliminary approach to develop novel montmorillonite (Mt) based adsorbents for removing inorganic and organic contaminants in a step-like process. Biomass (fungi) and surfactant (octadecyltrimethylammonium bromide) modified …

Transfection of bovine fetal fibroblast with polyethylenimine (PEI) nanoparticles: effect of particle size and presence of fetal bovine serum on transgene delivery and cytotoxicity

The development of efficient transfection protocols for livestock cells is crucial for implementation of cell-based transgenic methods to produce genetically modified animals. We synthetized fully deacylated linear 22, 87 and 217 kDa polyethylenimine …

Antimicrobial Activity of Starch Hydrogel Incorporated with Copper Nanoparticles

In order to obtain an antimicrobial gel, a starch-based hydrogel reinforced with silica-coated copper nanoparticles (Cu NPs) was developed. Cu NPs were synthesized by use of a copper salt and hydrazine as a reducing agent. In order to enhance Cu NP …