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Table 5 Effect of diet and postmortem storage on antioxidants and TBARS values of semimembranosus muscle in goats

From: Influence of dietary canola oil and palm oil blend and refrigerated storage on fatty acids, myofibrillar proteins, chemical composition, antioxidant profile and quality attributes of semimembranosus muscle in goats

   Level of CPOBa, %   P value
Parameter Time 0 4 8 SE Diet Diet x time
  0 d 2.43bx 3.66ax 4.39ax 0.54 0.026 0.476
α-tocopherol, mg/kg 1 d 2.40bx 3.33ay 4.20ax 0.34 0.034
  4 d 2.36bx 3.05aby 3.91ax 0.34 0.024
  7 d 2.00by 2.76ay 3.10ay 0.32 0.395
  P value 0.012 0.022 0.031    
  0 0.70bx 0.80ax 0.83ax 0.08 0.048 0.614
γ-tocopherol, mg/kg 1 0.67by 0.79ax 0.80ax 0.05 0.045
  4 0.65ay 0.73ay 0.73ay 0.03 0.001
  7 0.65ay 0.68ay 0.70ay 0.07 0.272
  P value 0.010 0.042 0.044    
  0 0.09x 0.08x 0.11x 0.01 0.530 0.513
δ-tocopherol, mg/kg 1 0.07x 0.08x 0.09xy 0.03 0.058
  4 0.05y 0.05y 0.07y 0.16 0.411
  7 0.04y 0.05y 0.07y 0.01 0.164
  P value 0.001 0.003 0.003    
  0 0.14x 0.27x 0.38x 0.04 0.053 0.231
  1 0.11y 0.19y 0.22y 0.05 0.051
Total carotenoids, mg/kg 4 0.11y 0.15y 0.14y 0.03 0.053
  7 0.11y 0.14y 0.14y 0.08 0.176
  P value 0.043 0.022 0.019    
  0 81.41 64.77 60.33 13.71 0.052 0.134
  1 86.55 67.44 62.97 12.44 0.055
GPX activityb 4 86.76 57.05 50.21 13.08 0.192
  7 87.36 76.76 66.56 7.25 0.149
  P value 0.187 0.901 0.782    
  0 0.12x 0.10x 0.08x 0.11 0.466 0.612
TBARS, mg MDA/kg 1 0.25x 0.26x 0.24y 0.15 0.264
  4 0.42xy 0.40x 0.34y 0.25 0.393
  7 0.85ay 0.64by 0.56by 0.21 0.047
  P value 0.030 0.011 0.023    
  1. a, b, c, means having different superscript along the same row are significantly different (P < 0.05). x, y, z means having different superscript along the same column are significantly different (P < 0.05). bGlutathione peroxidase activity is expressed as nmoles NADPH oxidized /min/mg protein. a80 % canola oil and 20 % palm oil blend