STUDY OF ANTIMICROBIAL STARCH Study of antimicrobial starch films properties and additive kinetic release.

OLIVIA V. LÓPEZ, LEDA GIANUZZI, NOEMÍ E. ZARITZKY, MARÍA ALEJANDRA GARCÍA.

Campinas

Jornada; III Jornadas Internacionais sobre Avanços na Tecnologia de Filmes e Coberturas Funcionais em Alimentos.; 2011

CYTED

the effect of potassium sorbate addition to polymer matrixes of native corn starch on film properties was evaluated. Films were obtained by casting method from gelatinized starch suspensions (5% w/w) with glycerol (1.5% w/w) and potassium sorbate (0.3% w/w). Active films resulted more yellow than films without sorbate. UV films barrier properties were improved by sorbate incorporation. It was confirmed that this additive has an additional effect as plasticizer on film matrixes.  Diffusion kinetic additive to a semisolid medium was studied. It was demonstrated that sorbate matrix incorporation resulted more effective, compared with its application by immersion or spray methods.  III Jornadas Internacionais sobre Avanços na Tecnologia de Filmes e Coberturas Funcionais em Alimentos. Centro de Convenções da Unicamp Campinas - Brasil. 27 al 28 de setiembre 2011