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Table 5 Intramuscular fat (mg/100 g) and fatty acid composition (% of total fatty acid) of infraspinatus (IS) and gluteus medius (GM) muscles in goats during postmortem chill storage

From: Comparison of myofibrillar protein degradation, antioxidant profile, fatty acids, metmyoglobin reducing activity, physicochemical properties and sensory attributes of gluteus medius and infraspinatus muscles in goats

   Storage time (days) P value
Parameter Muscle 0 4 7 Storage Muscle × storage
C12:0 IS 0.26 ± 0.010c 0.30 ± 0.012b 0.34 ± 0.010a <.0001 0.219
  GM 0.30 ± 0.011b 0.32 ± 0.021b 0.35 ± 0.021a 0.013  
  P value 0.122 0.221 0.191   
C14:0 IS 1.89 ± 0.021c 2.00 ± 0.010b 2.14 ± 0.020a 0.001 0.130
  GM 1.98 ± 0.010b 2.12 ± 0.010a 2.14 ± 0.010a 0.011  
  P value 0.110 0.210 0.923   
C14:1 IS 0.10 ± 0.010 0.09 ± 0.011 0.10 ± 0.010 0.429 0.213
  GM 0.12 ± 0.121 0.11 ± 0.120 0.12 ± 0.110 0.500  
  P value 0.712 0.115 0.345   
C15:0 IS 0.54 ± 0.021c 0.65 ± 0.020b 0.80 ± 0.040a <.0001 0.143
  GM 0.60 ± 0.011b 0.64 ± 0.031b 0.75 ± 0.011a 0.014  
  P value 0.201 0.345 0.167   
C15:1 IS 0.60 ± 0.009a 0.60 ± 0.012a 0.70 ± 0.010b 0.041  
  GM 0.65 ± 0.008a 0.67 ± 0.012a 0.72 ± 0.011b 0.020 0.230
  P value 0.144 0.125 0.223   
C16:0 IS 19.20 ± 0.210c 20.97 ± 0.310b 21.22 ± 0.667a <.0001 0.331
  GM 19.41 ± 0.112c 20.44 ± 0.121b 21.10 ± 0.325a 0.003  
  P value 0.221 0.298 0.145   
C16:1n-7 IS 1.20 ± 0.021b 1.79 ± 0.061a 1.75 ± 0.027a <.0001  
  GM 1.98 ± 0.010b 2.30 ± 0.020a 2.33 ± 0.089a 0.042 0.219
  P value 0.191 0.063 0.061   
C17:0 IS 0.62 ± 0.036b 0.64 ± 0.020b 0.74 ± 0.021a 0.017  
  GM 0.71 ± 0.017b 0.74 ± 0.010b 0.80 ± 0.041a 0.042 0.117
  P value 0.129 0.212 0.156   
C17:1 IS 0.41 ± 0.010b 0.65 ± 0.023a 0.70 ± 0.021a <.0001  
  GM 0.43 ± 0.011c 0.59 ± 0.012b 0.73 ± 0.012a <.0001 0.127
  P value 0.110 0.201 0.120   
C18:0 IS 20.21 ± 0.450 c 21.25 ± 0.300 b 22.50 ± 0.561 a 0.031  
  GM 20.41 ± 0.210 c 22.01 ± 0.110 b 23.21 ± 0.472 a 0.042 0.222
  P value 0.161 0.540 0.07   
C18:1n-9 IS 27.52 ± 0.705 27.07 ± 0.209 27.09 ± 0.767 0.142  
  GM 26.23 ± 0.338 26.14 ± 0.217 28.24 ± 0.189 0.213 0.223
  P value 0.649 0.136 0.598   
C18:1 t-11 IS 1.60 ± 0.021 1.65 ± 0.022 1.64 ± 0.010 0.117  
  GM 1.64 ± 0.012 1.56 ± 0.051 1.67 ± 0.051 0.238 0.192
  P value 0.190 0.167 0.221   
CLA cis-9 trans-11 IS 0.90 ± 0.011 0.92 ± 0.011 0.90 ± 0.012 0.142  
  GM 0.93 ± 0.051 0.96 ± 0.032 0.94 ± 0.043 0.134 0.219
  P value 0.141 0.132 0.113   
CLA trans-10 cis-12 IS 0.90 ± 0.038 0.89 ± 0.005 0.91 ± 0.021 0.195  
  GM 0.82 ± 0.016 0.84 ± 0.006 0.85 ± 0.048 0.175 0.223
  P value 0.100 0.213 0.163   
C18:2n-6 IS 13.25 ± 0.120a 12.00 ± 0.110b 11.05 ± 0.761c <.0001  
  GM 12.06 ± 0.140a 11.09 ± 0.120b 10.21 ± 0.111c 0.034 0.145
  P value 0.223 0.154 0.170   
C18:3n-3 IS 2.00 ± 0.050a 1.53 ± 0.030b 1.02 ± 0.010c <.0001  
  GM 1.98 ± 0.020a 1.64 ± 0.010b 1.21 ± 0.031c <.0001 0.134
  P value 0.210 0.130 0.230   
C20:4n-6 IS 5.40 ± 0.111a 4.47 ± 0.115b 4.38 ± 0.091b <.0001  
  GM 5.19 ± 0.132a 4.60 ± 0.119b 4.00 ± 0.145c <.0001 0.145
  P value 0.101 0.219 0.231   
C20:5n-3 IS 1.11 ± 0.010a 1.02 ± 0.020ab 0.78 ± 0.031b <.0001 0.250
  GM 1.40 ± 0.021a 1.37 ± 0.030a 1.02 ± 0.012b 0.024  
  P value 0.142 0.133 0.212   
C22:5n-3 IS 1.20 ± 0.041a 1.00 ± 0.010b 0.90 ± 0.020c 0.041  
  GM 1.31 ± 0.022a 1.03 ± 0.020b 1.00 ± 0.031c 0.023 0.461
  P value 0.072 0.221 0.090   
C22:6n-3 IS 0.90 ± 0.010a 0.80 ± 0.022b 0.75 ± 0.005b <.0001  
  GM 0.91 ± 0.021a 0.83 ± 0.021b 0.72 ± 0.008c 0.004 0.220
  P value 0.221 0.316 0.145   
Intramuscular fat (mg/100 g) IS 3030.23 ± 20.231y 3100.15 ± 30.001y 3050.00 ± 20.331y 0.110  
GM 2880.90 ± 10.122x 2840.69 ± 20.450x 2890.21 ± 15.211x 0.108 0.211
  P value 0.042 0.040 0.041   
∑SFA IS 42.72 ± 0.451c 45.81 ± 0.141b 47.74 ± 0.332a <.0001  
  GM 43.41 ± 0.230c 46.27 ± 0.220b 48.35 ± 0.331a 0.001 0.112
  P value 0.126 0.327 0.114   
∑MUFA IS 31.43 ± 0.110 31.85 ± 0.420 31.98 ± 0.610 0.212  
  GM 32.00 ± 0.191 31.37 ± 0.291 32.14 ± 0.171 0.450 0.341
  P value 0.116 0.221 0.145   
∑PUFA IS 25.66 ± 0.547a 22.73 ± 0.219b 20.69 ± 0.425c 0.001  
  GM 24.60 ± 0.226a 22.36 ± 0.137b 19.95 ± 0.289c 0.012 0.217
  P value 0.112 0.651 0.231   
∑n-3 IS 5.21 ± 0.021a 4.35 ± 0.017b 3.45 ± 0.011c 0.004  
  GM 5.60 ± 0.050a 4.87 ± 0.018b 3.95 ± 0.010c 0.001 0.431
  P value 0.230 0.112 0.349   
∑n-6 IS 18.65 ± 0.292a 16.57 ± 0.440b 15.43 ± 0.115c 0.001  
  GM 17.25 ± 0.451a 15.69 ± 0.225b 14.21 ± 0.389c 0.003 0.144
  P value 0.932 0.238 0.476   
n-6:n-3 IS 3.57 ± 0.011cy 3.80 ± 0.017by 4.47 ± 0.016ay 0.001 0.221
  GM 3.08 ± 0.022cx 3.22 ± 0.008bx 3.59 ± 0.025ax 0.001  
  P value 0.045 0.032 0.023   
UFA:SFA IS 1.34 ± 0.017 1.19 ± 0.010 1.10 ± 0.007 0.779 0.100
  GM 1.33 ± 0.028 1.16 ± 0.020 1.08 ± 0.039 0.174  
  P value 0.212 0.661 0.132   
PUFA:SFA IS 0.60 ± 0.016 a 0.49 ± 0.010b 0.43 ± 0.020c 0.009  
  GM 0.56 ± 0.028 a 0.47 ± 0.030 b 0.41 ± 0.010c 0.032 0.109
  P value 0.142 0.182 0.112   
  1. a, b, c means having different superscript along the same row are significantly different (P < 0.05). x, y means having different superscript along the same column are significantly different (P < 0.05). ∑SFA = (C14:0 + C15:0 + C16:0 + C17:0 + C18:0), ∑MUFA = (C14:1 + C15:1 + C16:1+ C17:1 + C18:1+ C18:1 trans-11), ∑UFA = (∑MUFA + C18:1 trans-11+ CLA cis-9 trans-11+ CLA cis-12 trans-10 + ∑n-3 + ∑n-6), ∑PUFA = (CLA cis-9 trans-11+ CLA cis-12 trans-10 + ∑n-3 + ∑n-6), ∑n-3 = (C18:3n-3 + C20:5n-3 + C22:5n-3 + C22:6n-3), ∑n-6 = (C18:2n-6 + C20:4n-6) n-6:n-3 = (C18:2n-6 + C20:4n-6) ÷ (C18:3n-3 + C20:5n-3 + C22:5n-3 + C22:6n-3), UFA:SFA = (∑UFA)/∑SFA), PUFA:SFA = (∑PUFA/∑SFA)