The effects of adding xanthan gum as a fat replacer on the quality characteristics of beef burgers

الملخص EN

The chemical, oxidative, microbiological, physical, and sensory properties of low-fat beef burgers containing varying levels of xanthan gum (0.5%, 1%, and 1.5%) as a fat replacer were evaluated.

the partial replacement of fat with xanthan gum resulted in a significant stabilizing of the formula during four different periods of being frozen in storage (0, 30, 60, and 90 days).

a chemical analysis of low-fat beef burger formulations (25%, 20%, and 15%) revealed that high concentrates of xanthan gum (1.5% and 1%) had significant capacity for the retention of the nutrients in the burger—especially proteins, ash, and moisture.

the freezing method had a higher impact in reducing the microbial load of the beef burger; adding more fats to burger formulations could be a potential source of microbial contamination.

the significant increase of the thiobarbituric acid reactive substances’ (tbars’) value in the high-fat control formulation (30%) showed a greater oxidative degradation of lipids during the frozen storage periods compared to low-fat formulations (20% and 15%).

physical analysis revealed that low-fat formulations containing xanthan gum had a significantly lower cooking loss and shrinkage rate than that of the high-fat control (c) formulation.

the sensory evaluation showed that a high percentage of xanthan gum (1.5 and 1%) had a significant effect of preserving the texture of low-fat burgers compared to the control sample, without significant differences to other sensory attributes.

thus, adding xanthan gum improved the quality characteristics of low-fat beef burgers compared to the high-fat control formulation while frozen and during the cooking process.