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

Adeyemi, Kazeem D.; Shittu, Rafiat M.; Sabow, Azad B.; Abubakar, Ahmed A.; Karim, Roselina; Karsani, Saiful A.; Sazili, Awis Q.

doi:10.1186/s40781-016-0105-5

Journal of Animal Science and Technology

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 ± 0.010^c	0.30 ± 0.012^b	0.34 ± 0.010^a	<.0001	0.219
	GM	0.30 ± 0.011^b	0.32 ± 0.021^b	0.35 ± 0.021^a	0.013
	P value	0.122	0.221	0.191
C14:0	IS	1.89 ± 0.021^c	2.00 ± 0.010^b	2.14 ± 0.020^a	0.001	0.130
	GM	1.98 ± 0.010^b	2.12 ± 0.010^a	2.14 ± 0.010^a	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 ± 0.021^c	0.65 ± 0.020^b	0.80 ± 0.040^a	<.0001	0.143
	GM	0.60 ± 0.011^b	0.64 ± 0.031^b	0.75 ± 0.011^a	0.014
	P value	0.201	0.345	0.167
C15:1	IS	0.60 ± 0.009^a	0.60 ± 0.012^a	0.70 ± 0.010^b	0.041
	GM	0.65 ± 0.008^a	0.67 ± 0.012^a	0.72 ± 0.011^b	0.020	0.230
	P value	0.144	0.125	0.223
C16:0	IS	19.20 ± 0.210^c	20.97 ± 0.310^b	21.22 ± 0.667^a	<.0001	0.331
	GM	19.41 ± 0.112^c	20.44 ± 0.121^b	21.10 ± 0.325^a	0.003
	P value	0.221	0.298	0.145
C16:1n-7	IS	1.20 ± 0.021^b	1.79 ± 0.061^a	1.75 ± 0.027^a	<.0001
	GM	1.98 ± 0.010^b	2.30 ± 0.020^a	2.33 ± 0.089^a	0.042	0.219
	P value	0.191	0.063	0.061
C17:0	IS	0.62 ± 0.036^b	0.64 ± 0.020^b	0.74 ± 0.021^a	0.017
	GM	0.71 ± 0.017^b	0.74 ± 0.010^b	0.80 ± 0.041^a	0.042	0.117
	P value	0.129	0.212	0.156
C17:1	IS	0.41 ± 0.010^b	0.65 ± 0.023^a	0.70 ± 0.021^a	<.0001
	GM	0.43 ± 0.011^c	0.59 ± 0.012^b	0.73 ± 0.012^a	<.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 ± 0.120^a	12.00 ± 0.110^b	11.05 ± 0.761^c	<.0001
	GM	12.06 ± 0.140^a	11.09 ± 0.120^b	10.21 ± 0.111^c	0.034	0.145
	P value	0.223	0.154	0.170
C18:3n-3	IS	2.00 ± 0.050^a	1.53 ± 0.030^b	1.02 ± 0.010^c	<.0001
	GM	1.98 ± 0.020^a	1.64 ± 0.010^b	1.21 ± 0.031^c	<.0001	0.134
	P value	0.210	0.130	0.230
C20:4n-6	IS	5.40 ± 0.111^a	4.47 ± 0.115^b	4.38 ± 0.091^b	<.0001
	GM	5.19 ± 0.132^a	4.60 ± 0.119^b	4.00 ± 0.145^c	<.0001	0.145
	P value	0.101	0.219	0.231
C20:5n-3	IS	1.11 ± 0.010^a	1.02 ± 0.020^ab	0.78 ± 0.031^b	<.0001	0.250
	GM	1.40 ± 0.021^a	1.37 ± 0.030^a	1.02 ± 0.012^b	0.024
	P value	0.142	0.133	0.212
C22:5n-3	IS	1.20 ± 0.041^a	1.00 ± 0.010^b	0.90 ± 0.020^c	0.041
	GM	1.31 ± 0.022^a	1.03 ± 0.020^b	1.00 ± 0.031^c	0.023	0.461
	P value	0.072	0.221	0.090
C22:6n-3	IS	0.90 ± 0.010^a	0.80 ± 0.022^b	0.75 ± 0.005^b	<.0001
	GM	0.91 ± 0.021^a	0.83 ± 0.021^b	0.72 ± 0.008^c	0.004	0.220
	P value	0.221	0.316	0.145
Intramuscular fat (mg/100 g)	IS	3030.23 ± 20.231^y	3100.15 ± 30.001^y	3050.00 ± 20.331^y	0.110
Intramuscular fat (mg/100 g)	GM	2880.90 ± 10.122^x	2840.69 ± 20.450^x	2890.21 ± 15.211^x	0.108	0.211
	P value	0.042	0.040	0.041
∑SFA	IS	42.72 ± 0.451^c	45.81 ± 0.141^b	47.74 ± 0.332^a	<.0001
	GM	43.41 ± 0.230^c	46.27 ± 0.220^b	48.35 ± 0.331^a	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 ± 0.547^a	22.73 ± 0.219^b	20.69 ± 0.425^c	0.001
	GM	24.60 ± 0.226^a	22.36 ± 0.137^b	19.95 ± 0.289^c	0.012	0.217
	P value	0.112	0.651	0.231
∑n-3	IS	5.21 ± 0.021^a	4.35 ± 0.017^b	3.45 ± 0.011^c	0.004
	GM	5.60 ± 0.050^a	4.87 ± 0.018^b	3.95 ± 0.010^c	0.001	0.431
	P value	0.230	0.112	0.349
∑n-6	IS	18.65 ± 0.292^a	16.57 ± 0.440^b	15.43 ± 0.115^c	0.001
	GM	17.25 ± 0.451^a	15.69 ± 0.225^b	14.21 ± 0.389^c	0.003	0.144
	P value	0.932	0.238	0.476
n-6:n-3	IS	3.57 ± 0.011^cy	3.80 ± 0.017^by	4.47 ± 0.016^ay	0.001	0.221
	GM	3.08 ± 0.022^cx	3.22 ± 0.008^bx	3.59 ± 0.025^ax	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 ± 0.010^b	0.43 ± 0.020^c	0.009
	GM	0.56 ± 0.028 ^a	0.47 ± 0.030 ^b	0.41 ± 0.010^c	0.032	0.109
	P value	0.142	0.182	0.112

^{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)

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