INVESTIGADORES
ZARITZKY Noemi Elisabet
artículos
Título:
Edible starch films and coatings characterization: SEM, water vapor and gas permeabilities.
Autor/es:
M.A. GARCÍA, M.N. MARTINO , N.E. ZARITZKY.
Revista:
SCANNING
Editorial:
JOHN WILEY & SONS INC
Referencias:
Lugar: New York; Año: 1999 vol. 21 p. 348 - 353
ISSN:
0161-0457
Resumen:
Effects of coating formulation (starch type and plasticizer) on microstructure, water vapor, and gas permeabilities of films and coatings were analyzed. Plasticizer addition was necessary for films and coatings integrity to avoid pores and cracks. A satisfactory correlation between microstructure observations by scanning electron microscopy, electronic thickness measurements, and water vapor and gas permeability determinations was observed. Films and coatings with high amylose content starches showed lower water vapor and gas permeabilities compared with films and coatings with medium amylose content starches.Films and coatings with sorbitol showed lower water vapor and gas permeabilities than those with glycerol, with the most effective plasticizer concentration being 20 g/l.
