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Effect of inulin, β-Glucan and their mixtures on emulsion stability, color and textural parameters of cooked meat
1Department of Food Technology, Human Nutrition and Food Safety, University of Murcia, 30071 Murcia, Spain. dalvarez@um.es
Abstract:
The effects of fat level (20.0, 12.5 and 5.0%), Inulin (gel-IG, and powder-IP) and β-Glucan (βG) on emulsion stability, color, textural characteristics and microstructure of cooked meat batters were investigated. Reducing fat to 5.0% increased cooking loss and decreased emulsion stability, lightness, hardness and fracturability of cooked emulsions. Inulin, βG, and their mixtures were used as fat replacers in low fat formulations. Adding IP provided better emulsion stability compared to IG, which had no significant effect on stability. IP also produced harder (27-34 N) low fat products with a high fracturability (26-29 N). On the contrary, emulsions containing IG resulted in creamy and softer characteristics. The results were supported by light micrographs, which indicated that appropriate addition of IG and βG mixtures (3%-IG & 0.3%-βG, 6%-IG & 0.6%-βG) could compensate for some of the changes brought about by fat reduction, and maintained several of the textural characteristics of the product as well as reducing cook loss.
