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Título
Structural characterization of a homopolysaccharide produced by Weissella cibaria FMy 2-21-1 and its potential application as a green corrosion inhibiting film
Autor
Año del Documento
2024
Editorial
Elsevier
Descripción
Producción Científica
Documento Fuente
International Journal of Biological Macromolecules, Julio 2022, vol. 212. p. 193-201
Zusammenfassung
Steel corrosion is a global issue that affects safety and the economy. Currently, the homopolysaccharide (HoPS) structure of a novel lactic acid bacterium (LAB) is under study, as well as its application as a green corrosion inhibitor. Weissella cibaria FMy 2-21-1 is a LAB strain capable of producing HoPS in sucrose enriched media. The isolated and purified HoPS was characterized by different spectroscopic analyses as a linear α-1,6 dextran adopting a random coil conformation, with high molecular weight and extended size in water. The polysaccharide showed a semi-crystalline organization, which is a requirement for film formation. Its biocoating showed a grainy network structure, with a slightly lesser hydrophobic role in the aqueous environment than in the ionic one. The electrochemical measurements of the steel-HoPS coating showed that the biopolymer layer acts as an anodic-type corrosion inhibitor, with high resistance to corrosion by water and with chloride ions which prevent pitting, a corrosion process typical of bare steel. Few reports have cited the application of LAB HoPS as corrosive coating inhibitors. This work is the first to explore the influence of a structurally characterized dextran from Weissella cibaria strain as a potential steel corrosion inhibitor in ionic environments.
Materias (normalizadas)
Corrosión
Materias Unesco
23 Química
32 Ciencias Médicas
Palabras Clave
HoPS structure
Biocoating
Corrosion inhibitor
ISSN
0141-8130
Revisión por pares
SI
Patrocinador
We thank Dr. Mozzi for providing the Weisella strain and the following fundings: PICT 1705 (ANPCyT–FONCyT, Argentina), PID2019-110709RB-100, RTI2018-096320-B-C22, RED2018-102417-T (Spanish Government), VA317P18, Infrared2018-UVA06 (Junta de Castilla y Le´on), 0624_2IQBIONEURO_6_E (Interreg V España Portugal POCTEP) and Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y Leon
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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