Abstract
A three-factor Box-Behnken design was adopted for studying the simultaneous effects of processing variables such as fat (10–30%), wheat bran (5–15%) and NaCl (0–2%) on physicochemical, textural and sensory properties of cooked beef patties. In addition, the ridge analysis was conducted to find the values of processing variables that maximise and minimise the texture profile analysis (TPA) parameters (hardness, chewiness, gumminess, adhesiveness, springiness, resilience and cohesiveness) and sensory ratings. Experimental design allowed for evaluation of potential interactive and quadratic effects between these variables; fat wheat bran and NaCl. It was found that protein and fat contents of patties was decreased and increased, respectively as the amount of wheat bran increased. NaCl increased the ash content of patties. Fat and wheat bran had a notable influence on textural properties, which improved the textural properties at certain levels. Lower addition of wheat bran and NaCl into patty resulted in higher acceptable product with respect to firmness, juiciness and overall quality properties.
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