This work was performed under a Turkish Ministry of Education competitive grant with additional funding from the South Carolina Agricultural Experimental Station. It is technical contribution no. 4378 of the SCAES.
Chitosan Film Mechanical and Permeation Properties as Affected by Acid, Plasticizer, and Storage
Article first published online: 20 JUL 2006
Journal of Food Science
Volume 63, Issue 6, pages 1049–1053, November 1998
How to Cite
Caner, C., Vergano, P. J. and Wiles, J. L. (1998), Chitosan Film Mechanical and Permeation Properties as Affected by Acid, Plasticizer, and Storage. Journal of Food Science, 63: 1049–1053. doi: 10.1111/j.1365-2621.1998.tb15852.x
- Issue published online: 20 JUL 2006
- Article first published online: 20 JUL 2006
- Ms received 1/31/98; revised 5/18/98; accepted 6/12/98
- edible film;
The effects of acid (acetic, formic, lactic, propionic) concentrations, plasticizer concentrations, and storage time (up to 9 wk) on mechanical properties, water vapor permeability, and oxygen permeability of solution-cast chitosan films were determined. Measured water vapor permeability coefficients ranged from 5.35 to 13.20 × 10−1 g/m·day·atm. Oxygen permeated coefficients ranged from 0.08 to 31.67 × 10−3 cc O2 m·day·atm. Neither property was affected by storage time. Tensile strength (6.85–31.88 Mpa) also was not time dependent, but elongation (14–70%) decreased with storage time. Lactic acid solutions produced the lowest oxygen permeability values, formic acid the highest. Films formed with 7.5% lactic acid solutions had uniquely high values for elongation at break.