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Table 1

Oxidative stability parameters of virgin olive oils extacted from Saurani variety during 24 months storage.

Storage period (Month) Free Fatty Acid Content Peroxide Value K232 K270




F UF F UF F UF F UF
0 0.4 ± 0.00f 0.4 ± 0.00f 8.99 ± 0.003q 11.97 ± 0.003n 2.0 ± 0.00b 2.0 ± 0.00d 0.19 ± 0.00e 0.18 ± 0.00e
1 0.6 ± 0.00e 0.7 ± 0.00e 8.99 ± 0.000q 12.02 ± 0.038n 2.2 ± 0.00a 2.3 ± 0.00b 0.21 ± 0.00d 0.21 ± 0.00b
2 0.7 ± 0.00d 0.7 ± 0.00e 11.93 ± 0.0270 14.88 ± 0.015m 2.2 ± 0.00a 2.5 ± 0.00a 0.21 ± 0.00d 0.20 ± 0.00c
3 0.7 ± 0.00d 0.8 ± 0.00d 14.89 ± 0.025i 24.00 ± 0.003a 2.2 ± 0.00a 2.0 ± 0.00d 0.21 ± 0.00d 0.19 ± 0.00d
4 0.7 ± 0.00d 0.8 ± 0.00d 14.98 ± 0.020k 23.00 ± 0.135b 1.9 ± 0.00c 1.9 ± 0.00e 0.12 ± 0.00k 0.16 ± 0.00g
5 0.7 ± 0.00d 0.8 ± 0.00d 14.99 ± 0.001k 23.82 ± 0.069ab 1.7 ± 0.00e 1.5 ± 0.00i 0.11 ± 0.00l 0.10 ± 0.00j
6 0.7 ± 0.00d 0.8 ± 0.00d 17.94 ± 0.017g 21.01 ± 0.019c 1.8 ± 0.00d 1.7 ± 0.00g 0.24 ± 0.00b 0.21 ± 0.00b
7 0.7 ± 0.00d 0.8 ± 0.00d 17.97 ± 0.001g 20.88 ± 0.007cd 2.2 ± 0.00a 2.2 ± 0.00c 0.21 ± 0.00d 0.21 ± 0.00b
8 0.7 ± 0.00d 0.8 ± 0.00d 17.98 ± 0.013g 20.85 ± 0.007d 1.8 ± 0.00d 1.7 ± 0.00g 0.24 ± 0.00b 0.21 ± 0.00b
9 0.7 ± 0.00d 0.8 ± 0.00d 17.99 ± 0.005g 20.62 ± 0.031e 1.3 ± 0.00g 1.4 ± 0.00j 0.10 ± 0.00m 0.17 ± 0.00f
10 0.7 ± 0.00d 0.8 ± 0.00d 20.97 ± 0.002a 17.80 ± 0.060f 1.6 ± 0.00f 1.7 ± 0.00g 0.13 ± 0.00j 0.15 ± 0.00h
11 0.7 ± 0.00d 0.9 ± 0.00c 20.73 ± 0.030a 17.80 ± 0.010f 1.7 ± 0.00e 1.6 ± 0.00h 0.17 ± 0.00g 0.18 ± 0.00e
12 0.7 ± 0.00d 0.9 ± 0.00c 20.72 ± 0.048a 17.79 ± 0.023f 1.6 ± 0.00f 1.6 ± 0.00h 0.11 ± 0.00l 0.15 ± 0.00h
13 0.8 ± 0.00c 0.9 ± 0.00c 20.70 ± 0.007b 17.54 ± 0.012g 1.6 ± 0.00f 1.6 ± 0.00h 0.11 ± 0.00l 0.15 ± 0.00h
14 0.8 ± 0.00c 1.0 ± 0.01b 20.12 ± 0.013c 17.15 ± 0.042h 0.4 ± 0.00k 0.3 ± 0.000 0.14 ± 0.00i 0.17 ± 0.00l
15 0.8 ± 0.00c 1.0 ± 0.01b 19.84 ± 0.007d 17.02 ± 0.021h 0.5 ± 0.00j 0.4 ± 0.00n 0.22 ± 0.00c 0.21 ± 0.00b
16 0.8 ± 0.00c 1.0 ± 0.00b 19.56 ± 0.021e 16.35 ± 0.011i 1.1 ± 0.00h 0.9 ± 0.00m 0.21 ± 0.00d 0.13 ± 0.00i
17 0.8 ± 0.00c 1.0 ± 0.01b 18.48 ± 0.031f 16.31 ± 0.001i 2.0 ± 0.00b 1.6 ± 0.00h 0.17 ± 0.00g 0.13 ± 0.00i
18 0.8 ± 0.00c 1.0 ± 0.00b 17.95 ± 0.024g 16.12 ± 0.041j 1.0 ± 0.00i 1.2 ± 0.00k 0.19 ± 0.00e 0.21 ± 0.00b
19 0.8 ± 0.00c 1.0 ± 0.00b 17.62 ± 0.016h 16.12 ± 0.011j 1.8 ± 0.00d 1.7 ± 0.00g 0.18 ± 0.00f 0.15 ± 0.00h
20 0.8 ± 0.00c 1.0 ± 0.01b 16.33 ± 0.011i 15.85 ± 0.066k 1.8 ± 0.00d 1.9 ± 0.00e 0.15 ± 0.00h 0.13 ± 0.00i
21 0.8 ± 0.00c 1.0 ± 0.00b 15.49 ± 0.034j 15.46 ± 0.123l 2.0 ± 0.00b 1.9 ± 0.00e 0.17 ± 0.00g 0.16 ± 0.00g
22 0.8 ± 0.00c 1.0 ± 0.01b 14.67 ± 0.022m 14.95 ± 0.012m 1.6 ± 0.00f 1.8 ± 0.00f 0.12 ± 0.00k 0.22 ± 0.00a
23 0.9 ± 0.00b 1.1 ± 0.00a 13.98 ± 0.008n 14.93 ± 0.125m 1.7 ± 0.00e 1.7 ± 0.00g 0.12 ± 0.00k 0.13 ± 0.00i
24 1.0 ± 0.00a 1.1 ± 0.00a 11.56 ± 0.025p 11.73 ± 0.0250 1.8 ± 0.00d 1.8 ± 0.00f 0.14 ± 0.00i 0.17 ± 0.00f

Note: Different superscript letters in the same column indicate significant difference between mean values (P < 0.01), N = 28.

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