We investigated the effects of different concentrations of whey protein isolate (WPI) on oat starch characteristics in terms of pasting, thermal, and structural properties. The pasting properties of the starch showed that hot paste viscosity increased with the addition of WPI in the system, and relative breakdown decreased. Thermal analysis showed a significant effect of WPI on oat starch by increasing the peak temperature of differential scanning calorimeter endotherms. The Xray diffraction and Fourier transform infrared spectroscopy studies revealed that WPI increased the ordered structuration of starch paste, as evident by an increase in relative crystallinity; in addition, a decrease in infrared bands at 1,024 cm-1 and 1,080 cm-1 suggested decreased gelatinization of oat starch granules. Overall, WPI at different concentrations affected the oat starch gelatinization properties.
机构:
Stellenbosch Univ, Dept Food Sci, Private Bag X1, ZA-7602 Stellenbosch, South Africa
Univ Juba, Dept Agr Sci, POB 82, Juba, South SudanStellenbosch Univ, Dept Food Sci, Private Bag X1, ZA-7602 Stellenbosch, South Africa
Balet, Sandra
;
Guelpa, Anina
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Stellenbosch Univ, Dept Food Sci, Private Bag X1, ZA-7602 Stellenbosch, South AfricaStellenbosch Univ, Dept Food Sci, Private Bag X1, ZA-7602 Stellenbosch, South Africa
Guelpa, Anina
;
Fox, Glen
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机构:
Univ Queensland, Ctr Nutr & Food Sci, Queensland Alliance Agr & Food Sci, Hartley Teakle Bldg, Brisbane, Qld 4072, Australia
Univ Calif Davis, Dept Food Sci & Technol, Davis, CA 95616 USAStellenbosch Univ, Dept Food Sci, Private Bag X1, ZA-7602 Stellenbosch, South Africa
Fox, Glen
;
Manley, Marena
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Stellenbosch Univ, Dept Food Sci, Private Bag X1, ZA-7602 Stellenbosch, South AfricaStellenbosch Univ, Dept Food Sci, Private Bag X1, ZA-7602 Stellenbosch, South Africa
机构:
Stellenbosch Univ, Dept Food Sci, Private Bag X1, ZA-7602 Stellenbosch, South Africa
Univ Juba, Dept Agr Sci, POB 82, Juba, South SudanStellenbosch Univ, Dept Food Sci, Private Bag X1, ZA-7602 Stellenbosch, South Africa
Balet, Sandra
;
Guelpa, Anina
论文数: 0引用数: 0
h-index: 0
机构:
Stellenbosch Univ, Dept Food Sci, Private Bag X1, ZA-7602 Stellenbosch, South AfricaStellenbosch Univ, Dept Food Sci, Private Bag X1, ZA-7602 Stellenbosch, South Africa
Guelpa, Anina
;
Fox, Glen
论文数: 0引用数: 0
h-index: 0
机构:
Univ Queensland, Ctr Nutr & Food Sci, Queensland Alliance Agr & Food Sci, Hartley Teakle Bldg, Brisbane, Qld 4072, Australia
Univ Calif Davis, Dept Food Sci & Technol, Davis, CA 95616 USAStellenbosch Univ, Dept Food Sci, Private Bag X1, ZA-7602 Stellenbosch, South Africa
Fox, Glen
;
Manley, Marena
论文数: 0引用数: 0
h-index: 0
机构:
Stellenbosch Univ, Dept Food Sci, Private Bag X1, ZA-7602 Stellenbosch, South AfricaStellenbosch Univ, Dept Food Sci, Private Bag X1, ZA-7602 Stellenbosch, South Africa