Table 8. Physico-chemical characteristics of nuggets during freezing storage at −18°C for 45 days

Storage days Treatments
T1 T2 T3 T4 T5 T6
pH 0 5.72±0.02 5.83±0.02 5.94±0.02 5.95±0.02 6.04±0.02 6.22±0.04
15 5.79±0.02 5.89±0.01 6.04±0.02 6.09±0.01 6.14±0.01 6.33±0.03
30 5.85±0.01 5.94±0.01 5.76±0.5 6.16±0.01 6.21±0.02 6.39±0.02
45 5.94±0.03 5.96±0.01 6.12±0.03 6.18±0.01 6.26±0.02 6.53±0.02
Water holding capacity (%) 0 80.90±0.5 81.93±0.1 83.20±0.4 84.56±0.2 85.20±0.1 86.23±0.1
15 80.23±0.3 81.23±0.3 82.30±0.4 83.20±0.2 83.76±0.9 85.50±0.1
30 78.26±0.1 79.26±0.1 80.467±0.5 81.53±0.2 82.33±0.4 83.53±0.1
45 74.23±0.1 75.33±0.1 76.40±0.4 77.10±0.1 78.20±0.6 79.53±0.1
Color (CTn) 0 104.3±3 111±1 118.3±2.5 119±2 123.6±2 130.6±1.5
15 102.3±1.15 104.6±1.15 111.0±1 114±1 115.6±0.5 118.3±1.5
30 100.0±1 101.0±1 103.0±1 107±1 109.0±1 109.67±1.5
45 100.0±1 101.0±2 103.0±1.15 106.0±1.73 109.0±1 112.6±1.15
Texture 0 1,143±1 1,135±1 1,131±1 1,126±2 1,118±1.5 1,114±2.5
15 1,147±2 1,142±2 1,139±1 1,129±1 1,124±1 1,118±1
30 1,155±1 1,149±2 1,144±2 1,138±1 1,133±1 1,125±2
45 1,157±1 1,151±1 1,147±1 1,142±1 1,133±1 1,129±1
T1, basal feed (control); T2, 50 mg bioactive peptides/kg of feed; T3, 100 mg bioactive peptides/kg of feed; T4, 150 mg bioactive peptides/kg of feed; T5, 200 mg bioactive peptides/kg of feed, T6, 250 mg bioactive peptides/kg of feed.
Mean values with different superscripts differ significantly.
All values expressed as mean±SD.