Viscoelastic Properties of Reduced-fat and Full-fat Cheddar Cheeses |
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Authors: | L MA MA DRAKE GV BARBOSA-CÁNOVAS BG SWANSON |
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Affiliation: | Authors Ma and Barbosa-Cánovas are with the Dept. of Biological Systems Engineering and authors Drake and Swanson are with the Dept. of Food Science &Human Nutrition, Washington State Univ., Pullman, WA 99164–6120. Address inquiries to Dr. Barbosa-Cánovas. |
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Abstract: | Viscoelastic properties of cheeses with and without 0.2% or 0.5% (w/w) lecithin were studied using oscillatory dynamic experiments and creep tests. Elastic and loss moduli of reduced-fat cheese with lecithin were greater (p < 0.01) than reduced-fat cheese without lecithin, but less (p < 0.01) than these values for full-fat cheese. In creep/recovery tests, the residual strain of full-fat cheese, reduced-fat cheese with 0.5% or 0.2% lecithin, and reduced-fat cheese without lecithin were 7.8, 7.9, 8.1, and 15.4%, respectively. There was good agreement in terms of compliance behavior of the four types of cheese between experimental data and prediction by the generalized Kelvin model with six elements. |
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Keywords: | viscoelastic properties reduced-fat cheddar cheese creep |
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