The Effect of Hydroxypropyl Cellulose on Different Properties of Thin Layers Gluten

Vajiheh Heshmati, Mohamadreza Kasaei
2017 Pizhūhish va Nuāvarī dar ̒Ulūm va Sanāyi̒-i Ghaz̠āyī  
The effects of hydroxypropyl cellulose (HPC) on oxygen and water vapour permeability and mechanical properties of gluten-containing glycerol (10 and 20 wt% gluten) at different relative humidity (RH= 32, 52 and 75%) were studied.Water vapour permeability (WVP) has been measured using a vial coated by a film. Oxygen transmission rate (OTR) of a film was determined from measurement of peroxide value for a definite amount of oil in a vial and coated by a film. Mechanical properties were measured
more » ... ies were measured using a tensile machine. Microstructure and structure of the films were investigated by scanning electron microscopy (SEM) and infrared spectroscopy (FTIR), respectively. Results showed that WVP of all films increased with the increase of relative humidity (P<0.05).The amounts of water vapor permeability for the gluten-HPC-glycerol film increased with increasing glycerol concentration (P<0.05). Oxygen permeability for gluten-glycerol (containing 20 wt% glycerol) and gluten-HPC-glycerol films (containing 10 wt% of glycerol) were smaller than other films, in relative humidity of 32% and 52% (P<0.05). Tensile strength of the films increased with an increase in HPC, whereas their amounts decreased with an increase in glycerol (P<0.05). The percentage of elongation for the films increased with an increase in glycerol.
doi:10.22101/jrifst.2017.02.26.008 doaj:894524325fc74f80966692d41c9b9785 fatcat:6dhvlwevwjdrroc6scafpvgmry