GC-FID and NMR Spectroscopic Studies on Gamma Irradiated Walnut Lipids
Table 2
Fatty acids composition % of (Total Fatty Acids) TFA in total lipids of non-irradiated and irradiated walnuts packaged in vacuum.
Fatty acids
0 kGy
5 kGy
10 kGy
13 kGy
C12:0
0.03 ± 0.00a
0.03 ± 0.00a
0.03 ± 0.00a
0.03 ± 0.00a
C14:0
0.04 ± 0.00a
0.04 ± 0.00a
0.04 ± 0.00a
0.04 ± 0.00a
C14:1
0.02 ± 0.00a
0.02 ± 0.00a
0.02 ± 0.00a
0.02 ± 0.00a
iso-C15:0
0.01 ± 0.00a
0.01 ± 0.00a
0.01 ± 0.00a
0.01 ± 0.00a
C15:0
0.35 ± 0.01a
0.35 ± 0.01a
0.35 ± 0.01a
0.39 ± 0.01b
C15:1ω-5
0.01 ± 0.00a
0.01 ± 0.00a
0.01 ± 0.00a
0.01 ± 0.00a
C16:0
6.76 ± 0.07a
7.25 ± 0.04b
8.20 ± 0.04c
9.41 ± 0.02d
iso-C16:0
0.06 ± 0.00a
0.07 ± 0.01a
0.07 ± 0.01a
0.10 ± 0.01b
C16:1ω-7
0.08 ± 0.01a
0.09 ± 0.00a
0.09 ± 0.00a
0.09 ± 0.01a
iso-C17:0
—
0.01 ± 0.00a
0.01 ± 0.00a
0.01 ± 0.00a
anteiso-C17:0
0.01 ± 0.00a
0.02 ± 0.00b
0.01 ± 0.00a
0.02 ± 0.00b
cyclo-C17:0
0.01 ± 0.00a
0.01 ± 0.00a
0.01 ± 0.00a
0.01 ± 0.00a
C17:0
0.03 ± 0.00a
0.05 ± 0.00b
0.05 ± 0.00b
0.06 ± 0.01b
C17:1ω-7
0.02 ± 0.00a
0.02 ± 0.00a
0.02 ± 0.00a
0.02 ± 0.00a
C18:0
2.30 ± 0.03a
2.57 ± 0.04b
2.75 ± 0.08c
3.14 ± 0.07d
C18:1ω-9
19.77 ± 0.07a
19.62 ± 0.04b
19.30 ± 0.04c
18.93 ± 0.03d
C18:1ω-7
0.52 ± 0.01a
0.53 ± 0.02a
0.50 ± 0.01ab
0.47 ± 0.02b
C18:2ω-6
59.71 ± 0.16a
59.19 ± 0.05b
58.75 ± 0.10c
57.64 ± 0.05d
C18:3ω-6
0.07 ± 0.00a
0.07 ± 0.01a
0.05 ± 0.00b
0.05 ± 0.00b
C18:3ω-3
9.52 ± 0.02a
9.36 ± 0.05b
9.08 ± 0.06c
8.90 ± 0.06d
C18:4ω-3
0.06 ± 0.00a
0.06 ± 0.00a
0.05 ± 0.00b
0.06 ± 0.00a
C19:0
0.01 ± 0.00a
0.01 ± 0.00a
0.01 ± 0.00a
0.01 ± 0.00a
C20:0
0.01 ± 0.00a
0.01 ± 0.00a
0.01 ± 0.00a
0.02 ± 0.01a
C20:1ω-9
0.17 ± 0.00a
0.17 ± 0.01a
0.17 ± 0.01a
0.19 ± 0.00b
C20:3ω-6
0.02 ± 0.00a
0.02 ± 0.00a
0.02 ± 0.00a
0.02 ± 0.00a
C20:4ω-6
0.01 ± 0.00a
0.01 ± 0.00a
0.01 ± 0.00a
0.01 ± 0.00a
C20:5ω-3
0.02 ± 0.00a
0.02 ± 0.00a
0.01 ± 0.00b
0.01 ± 0.00b
C22:4ω-6
0.02 ± 0.00a
0.02 ± 0.00a
0.02 ± 0.00a
0.01 ± 0.00b
C22:5ω-6
0.03 ± 0.00a
0.03 ± 0.00a
0.02 ± 0.00b
0.02 ± 0.00b
C22:5ω-3
0.01 ± 0.00a
0.01 ± 0.00a
0.01 ± 0.00a
0.01 ± 0.00a
C22:6ω-3
0.32 ± 0.01a
0.32 ± 0.01a
0.31 ± 0.01ab
0.29 ± 0.01b
SFA
9.62 ± 0.10a
10.44 ± 0.02b
11.55 ± 0.06c
13.25 ± 0.05d
MUFA
20.59 ± 0.05a
20.46 ± 0.05b
20.11 ± 0.03c
19.73 ± 0.04d
PUFA
69.79 ± 0.15a
69.10 ± 0.07b
68.34 ± 0.05c
67.02 ± 0.05d
UFA
90.38 ± 0.10a
89.56 ± 0.04b
88.45 ± 0.06c
86.75 ± 0.05d
Σω-6
59.86 ± 0.17a
59.33 ± 0.04b
58.87 ± 0.10c
57.75 ± 0.05d
Σω-3
9.93 ± 0.02a
9.77 ± 0.04b
9.46 ± 0.05c
9.27 ± 0.05d
ω-6/ω-3
6.03 ± 0.03a
6.07 ± 0.02a
6.22 ± 0.04b
6.23 ± 0.03b
MUFA/SFA
2.14 ± 0.02a
1.96 ± 0.01b
1.74 ± 0.02c
1.49 ± 0.01d
PUFA/MUFA
3.39 ± 0.02a
3.38 ± 0.01a
3.40 ± 0.01a
3.40 ± 0.01a
PUFA/SFA
7.26 ± 0.09a
6.62 ± 0.02b
5.92 ± 0.04c
5.06 ± 0.02d
C18:1ω-9/C18:2ω-6
0.33 ± 0.00a
0.33 ± 0.00a
0.33 ± 0.00a
0.33 ± 0.00a
C16:0/C18:0
2.94 ± 0.01a
2.82 ± 0.06b
2.98 ± 0.09a
3.00 ± 0.07a
Values are the mean of three determinations from two individual experiments ( = 6). Means in the same row bearing different letters differ significantly ().