Effects of temperature, starch concentration, and plasticizer concentration on the physical properties of ulluco (Ullucus tuberosus Caldas)-based edible films

2018 ◽  
Vol 120 ◽  
pp. 1834-1845 ◽  
Author(s):  
Luis Daniel Daza ◽  
Angie Homez-Jara ◽  
José Fernando Solanilla ◽  
Henry Alexander Váquiro
Keyword(s):  
Physical Properties ◽  
Edible Films ◽  
Starch Concentration ◽  
Ullucus Tuberosus ◽  
Effects Of Temperature ◽  
Plasticizer Concentration

Physical properties of edible films based on cassava starch as affected by the plasticizer concentration

2008 ◽  
Vol 21 (2) ◽  
pp. 85-89 ◽  
Author(s):  
P. V. A. Bergo ◽  
R. A. Carvalho ◽  
P. J. A. Sobral ◽  
R. M. C. dos Santos ◽  
F. B. R. da Silva ◽  
...  
Keyword(s):  
Physical Properties ◽  
Edible Films ◽  
Cassava Starch ◽  
Plasticizer Concentration

Physical Properties of Gelatin Films Plasticized with Glycerol, Studied by Spectroscopic Methods

2010 ◽  
Vol 636-637 ◽  
pp. 753-758 ◽  
Author(s):  
P. Bergo ◽  
R.A. Carvalho ◽  
A.C.S. Vadala ◽  
V.C.I. Guevara ◽  
P.J.A. Sobral
Keyword(s):  
Infrared Spectroscopy ◽  
Physical Properties ◽  
Silica Gel ◽  
Edible Films ◽  
Polymeric Matrix ◽  
Glycerol Content ◽  
Flexible Films ◽  
Gelatin Films ◽  
Hydrophilic Nature ◽  
New Interactions

The effect of glycerol content on the physical properties of gelatin-based edible films was studied in this work, on the basis of the interactions between the plasticizer and polymeric matrix. In this work, some non-usual techniques were used to characterize edible films. For dielectric measurements and infrared spectroscopy, these films were conditioned in silica gel in order to minimize the water effect. For other analysis, the films were conditioned in NaBr. Infrared spectroscopy showed no apparent changes in the position peaks, suggesting an absence of new interactions between the plasticizer and film matrix. It seems that the plasticizers only occupy some specific regions between the polymeric matrix, increasing their distance, and thus, affecting their mobility, which results in more flexible films. Dielectric constant of the films increased with plasticizer content, and decreased over silica gel conditioning. The polarizability was found to arise mainly from water molecules present in the film. Microwave response was found to be also sensitive to water content in the films, due to plasticizer hydrophilic nature. According to the diffractograms, gelatin films presented essentially an amorphous nature, independently of the glycerol content. The results suggest, therefore, that the glycerol induces no chemical modifications in the films.

scholarly journals Mechanical and Physical Properties of Pea Starch Edible Films in the Presence of Glycerol

2016 ◽  
Vol 40 (6) ◽  
pp. 1339-1351 ◽  
Author(s):  
Bahareh Saberi ◽  
Quan V. Vuong ◽  
Suwimol Chockchaisawasdee ◽  
John B. Golding ◽  
Christopher J. Scarlett ◽  
...  
Keyword(s):  
Physical Properties ◽  
Edible Films ◽  
Mechanical And Physical Properties ◽  
Pea Starch
Sign in / Sign up

Export Citation Format

Share Document