Journal
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
Volume 55, Issue 2, Pages 532-539Publisher
SPRINGER INDIA
DOI: 10.1007/s13197-017-2962-4
Keywords
Sesame protein isolate; Cross linking; Carboxylic acid; Tensile strength; Transparency; Films
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Films were developed from sesame protein crosslinked with three different carboxylic acids (malic acid, citric acid and succinic acid) at 1, 3 and 5% (w/w, on protein isolate basis). The effect of crosslinking on physical, mechanical, thermal and morphological properties was studied. Succinic acid crosslinked films exhibited least water vapor permeability the highest tensile strength and overall showed superlative properties among other films. X-ray diffraction showed single main crystalline reflection at 20A degrees indicating amorphous structure of films. DSC curves of films indicated single melting peak in the range of 103-161 A degrees C. All films exhibited weight loss in three stages. FTIR exhibited peak at 1700 cm(-1) confirming crosslinking reaction between carboxylic acids and protein. Crosslinked films were compact, nonporous and smooth as compared to film from native sesame protein isolate.
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