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Author(s): Quelemes PV.
de Araujo AR.
Placido A.
Delerue-Matos C.
Maciel JS.
Bessa LJ.
Ombredane AS.
Joanitti GA.
Soares MJD.
Eaton P.
da Silva DA.
Leite JRSA
Title: Quaternized cashew gum: An anti-staphylococcal and biocompatible cationic polymer for biotechnological applications
Publisher: Elsevier
Issue Date: 2017
Abstract: Chemical modifications to cashew gum (CG) structure have been previously reported to obtain new physicochemical characteristics, however until now there were no reports of modifications by introduction of new functional groups to add cationic character. This study presents a quaternization route for CG using a quaternary ammonium reagent. The chemical features of the quaternized cashew gum derivatives (QCG) were analyzed by: FTIR, elemental analysis, degree of substitution, Zeta potential, H-1 NMR and H-1-C-13 correlation (HSQC). QCG were evaluated for their anti-staphylococcal activity by determining minimum inhibitory and bactericidal concentrations against pathogenic Staphylococcus spp. and by imaging using atomic force microscopy. Moreover, the mammalian cell biocompatibility were also assessed through hemolytic and cell toxicity assays. QCG presented promising antimicrobial activity against methicillin-resistant S. aureus and biocompatibility on tested cells. These results show that QCG could be a promising tool in the development of biomaterials with an anti-septic action. (C) 2016 Elsevier. All rights reserved.
Source: Carbohydrate Polymers, vol. 157, p. 567-575
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:CIIMAR - Artigo em Revista Científica Internacional

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