Effect of malva nut gum (purified and crude), sodium chloride and phosphate on cooking, texture, colour, rheology and microstructure of different chicken meat batters

Abstract

1. In the first experiment, the effect of adding purified malva nut gum (PMG) to comminuted poultry breast meat batters formulated with different contents of sodium chloride (NaCl; 10 to 30 g/kg) and tripolyphosphate (TPP; 0 and 5 g/kg) was studied. 2. Increasing salt (sodium chloride) content, along with the addition of 1 g/kg PMG, was beneficial in reducing cooking loss. At all salt contents, batters with PMG showed lower springiness than batters without PMG. Adding PMG to the batter with 20 g/kg salt and TPP decreased fracture force, springiness and chewiness. 3. In a second experiment, the effects of PMG (00, 30 and 60 g/kg), crude malva nut gum (CMG; 30 g/kg) and TPP (00 and 40 g/kg) on cooking loss, fat loss, colour, texture, rheology and microstructure of emulsified chicken meat batters were studied. 4. Increasing PMG reduced cooking and fat losses. Adding TPP increased hardness, springiness, cohesiveness and chewiness. The 10 g/kg PMG and TPP provided the greatest hardness. The batter with 30 g/kg PMG resulted in the lowest lightness (L&) and highest redness (a*). Adding PMG and TPP resulted in stable batters, as was evident by light microscopy results. The rheological evaluation showed the highest G' in the batter with 40 g/kg TPP followed in decreasing order by the batters containing TPP plus 30 g/kg PMG, TPP plus 10 g/kg PMG, 30 g/kg PMG, 10 g/kg PMG, 30 g/kg CMG and the control. 5. Overall, the results are important for developing new applications where malva nut gum can be used to improve yield and stability of meat products.