Journal
LWT-FOOD SCIENCE AND TECHNOLOGY
Volume 74, Issue -, Pages 528-533Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.lwt.2016.08.013
Keywords
Protein-polysaccharide dispersion; Mixed gel; Apparent viscosity; Viscoelasticity; Thermal gelation
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Funding
- Commonweal Guild Grain Scientific Research Project of China [201513004]
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The effect of addition of flaxseed gum (FG) on the rheological and thermal gelation properties of peanut protein isolate (PPI) was studied. Small quantity (1-5 g/kg) of FG was added to PPI solution (140 g/kg) and the resultant rheological properties were studied using steady shear and small amplitude oscillatory measurements. The apparent viscosity of all samples increased with the increase from 1 to 5 g/kg in the concentration of FG and was fitted well by the Herschel-Bulldey model (R-2 > 0.99). The addition of FG reduced the gelling time almost from 1000 to 500 s and increased the strength of FG-PPI mixed gels from 2000 to more than 3000 Pa. These FG-PPI gels showed the behavior of physical gels since their storage modulus (G') was much higher than the loss modulus (G) and G' was only slightly frequency dependent. (C) 2016 Elsevier Ltd. All rights reserved.
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