ALVAREZ IGARZABAL CECILIA INES
Artículos
Título:
Cross-linked soy protein as material for biodegradable films: Synthesis, characterization and biodegradation
Autor/es:
AGUSTIN GONZALEZ; MIRIAM C. STRUMIA; CECILIA I. ALVAREZ IGARZABAL*
Editorial:
ELSEVIER SCI LTD
Referencias:
Año: 2011 vol. 106 p. 331 - 331
Resumen:
he modification of soy protein isolate (SPI) with different amounts of a naturally occurring cross-linking
agent (genipin, Gen) and glycerol used as plasticizer was carried out in this work. The films yielded were
cast from heated and alkaline aqueous solution of SPI, glycerol and Gen and then dried in an oven. Total
soluble matter, water vapor permeability and mechanical properties were improved by adding small
amounts of Gen. These properties were not significantly affected (PP0.05) by additions exceeding
2.5% (w/w of SPI). The opacity and cross-linking degree were linearly increased with the addition of
Gen, whereas the swelling ratios in water were decreased. All the films were submitted to degradation
under indoor soil burial conditions and the weight loss of the films was measured at different times. This
study revealed that the film biodegradation time can be controlled or modified from at least 14 to
33 days. The tests performed showed the potential of Gen to improve