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texto impreso
Transparent glycerol (Gly)-plasticized whey protein isolate (WPI) sheets could be formed from Gly-WPI mixtures using compression molding, demonstrating that such mixtures display flowability and fusion behavior under certain conditions. The effe[...]texto impreso
The thermal stability of starch cross-linked with tetraethylene glycol diacrylate was studied under nitrogen atmosphere by thermogravimetry (TG) and infrared spectroscopy (FTIR). The cross-linking reaction was confirmed by the increase in intens[...]texto impreso
Moisture sorption isotherms of high amylose corn starch (HACS) films at 5, 25, 35 and 45 oC within an approximate water activity (aw)range of 0.11–0.85 were obtained using a static gravimetric method. HACS films fitted a type III BET model at al[...]documento electrónico
VM HERNANDEZ-IZQUIERDO, Autor ; JM. KROCHTA, AutorIncreasing interest in high-quality food products with increased shelf life and reduced environmental impact has encouraged the study and development of edible and/or biodegradable polymer films and coatings. Edible films provide the opportunity[...]texto impreso
ALVES, V. D., Autor ; COELHOSO, I. M., Autor ; COSTA, N. R. R., AutorThe intense use of synthetic packaging films has led to serious ecological problems due to their non-biodegradability. Consequantly , research interest into the use of biodegradable natural biopolymers has greatly increased.texto impreso
Effects of plasticizers (glycerol, sorbitol, and 1:1 mixture of glycerol and sorbitol) on moisture sorption characteristics of cassava starch films were investigated at three levels of plasticizer concentration (0, 20, and 40 g/100 g starch). Th[...]texto impreso
The water vapor (WVP) and oxygen (O2P) permeabilities of beeswax (BW), candelilla wax (CnW), carnauba wax (CrW) and microcrystalline wax (MW), formed as freestanding films, were determined. CnW and CrW both had small values for O2P (0.29 and 0.2[...]texto impreso
Water transport in edible films of starch based products is a complex phenomenon due to the strong interaction of sorbed water molecules with polymeric structure of starch. Water sorption isotherms on high amylose starch based films are highly n[...]