Publicación: EFFECT OF POLYGODIAL ON MECHANICAL, OPTICAL AND BARRIER PROPERTIES OF CHITOSAN FILMS
Fecha
2010
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Editor
JOURNAL OF FOOD PROCESSING AND PRESERVATION
Resumen
THE MECHANICAL, OPTICAL AND BARRIER PROPERTIES OF CHITOSAN FILMS CONTAINING POLYGODIAL (0.0, 2.7, 13.9, 25.0?MG/G OF CHITOSAN) WERE STUDIED. WATER VAPOR PERMEABILITY (WVP), TENSILE STRENGTH, PERCENTAGE ELONGATION AT BREAK, CIELAB COLOR PARAMETERS, HUE ANGLE AND CHROMA OF FILMS WERE DETERMINED. FOURIER TRANSFORM INFRARED (FTIR) WAS ALSO PERFORMED TO DETERMINE FUNCTIONAL GROUP INTERACTION BETWEEN THE MATRIX AND POLYGODIAL ADDED. THE USE OF POLYGODIAL RESULTED IN STRONGER FILMS WITHOUT LOSING THEIR EXTENSIBILITY AND WITH LOW WVP. FILMS BECAME DARKER WITH YELLOW-GREEN COLORATION WITH INCREASING POLYGODIAL CONCENTRATION. POLYGODIAL ADDED TO CHITOSAN FILMS DID NOT HAVE ANY INTERACTION WITH THE AMINO GROUPS OF CHITOSAN AS MEASURED BY FTIR. POLYGODIAL AS A NATURAL DIALDEHYDE CAN EFFECTIVELY BE APPLIED TO ENHANCE SOME PHYSICAL PROPERTIES OF EDIBLE FILMS PREPARED WITH CHITOSAN.
