Artículo
Adsorption of nisin on raw montmorillonite
Ibarguren, Carolina
; Naranjo, Pablo Matias
; Stötzel, Christian; Audisio, Marcela Carina
; Sham, Edgardo Ling
; Farfan Torres, Elsa Monica
; Müller, Frank A.
Fecha de publicación:
03/2014
Editorial:
Elsevier Science
Revista:
Applied Clay Science
ISSN:
0169-1317
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The aim of the present work was to develop food-grade materials capable of releasing antimicrobial agents. Montmorillonite (Mt), a raw, abundant inexpensive clay mineral approved as a food additive, was used as support material. The immobilized antimicrobial agent was pure nisin (Danisco, UK). A series of antibacterial compounds were prepared, and the antimicrobial activity of the resultant montmorillonite-nisin (MtNis) immobilized systems was determined against Enterococcus faecium C1. The characterization of the antimicrobial powders showed evidences of nisin adsorption on by means of a "frustrated intercalation" model with a nisin loading (NL) saturation value close to 0.24. CEC (cation exchange capacity) of Mt. The antibacterial powders with NL above this value completely inhibited E. faecium C1 during 24. h of contact. These results are encouraging for the development of nisin-based bioprotectors immobilized on raw Mt.
Palabras clave:
Food Biopreservative
,
Montmorillonite
,
Nisin
,
Peptide/Support Interaction
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Articulos(INIQUI)
Articulos de INST.DE INVEST.PARA LA INDUSTRIA QUIMICA (I)
Articulos de INST.DE INVEST.PARA LA INDUSTRIA QUIMICA (I)
Citación
Ibarguren, Carolina; Naranjo, Pablo Matias; Stötzel, Christian; Audisio, Marcela Carina; Sham, Edgardo Ling; et al.; Adsorption of nisin on raw montmorillonite; Elsevier Science; Applied Clay Science; 90; 3-2014; 88-95
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