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PREPARATION OF EDIBLE AND BIODEGRADABLE FILMS FROM VITAL WHEAT GLUTEN | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 12, Issue 1, 2007, Pages 0-0 | ||
| Authors | ||
| A. A. H. Al-Bayati; M. J. Hindi; M. D. Al-Kaisy | ||
| Abstract | ||
| An edible and biodegradable films were prepared from vital wheat gluten. It was self - standing, transparent, tasteless, odorless, colorless, clear, homogenous, bendable, glossy and flexible. Films thickness ranged between 0.061-0.078mm. The tensile strength (TS) and percentage of elongation at break (E) ranged between 2.69-10.5 MPa and 8.2-65% respectively. The water solubility ranged between 24.66-38.21% and the water vapor permeability (WVP) ranged between 0.74-1.37 gm.mm/m2 day. mmHg. Films prepared at pH 10 and 75C° had better mechanical and barrier properties than that prepared at pH 4 and 45C°. Partial substitution of wheat gluten with 20, 30 or 50% corn zein, produced films with higher TS and lower E and WVP than control. Partial substitution of wheat gluten with 10, 20,or 30% gelatin, produced films with higher TS, solubility and WVP but lower E in comparism with control | ||
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