Table 3.
Oxidative parameters of oil samples during 3 days of frying.
| Analyses | Oil samples | Before deep frying | Day 1 | Day 2 | Day 3 |
|---|---|---|---|---|---|
| PV | CO | 0.82 ± 0.05A,a | 2.50 ± 0.36A,b | 2.80 ± 0.31A,c | 5.24 ± 1.97A,d |
| SFO | 0.36 ± 0.05B,a | 11.12 ± 4.64BC,b | 12.21 ± 4.38B,c | 14.54 ± 3.67BC,d | |
| SO | 0.49 ± 0C,a | 8.34 ± 0.08CD,b | 10.90 ± 0.16BC,c | 12.76 ± 0.06B,d | |
| CSO | 1.70 ± 0D,a | 4.15 ± 1.82AD,b | 7.35 ± 0.28C,c | 8.46 ± 0.96A,d | |
| SSO | 2.38 ± 0.05E,a | 14.10 ± 2.54B,b | 16.78 ± 2.23D,c | 17.73 ± 2.25C,d | |
| p-AV | CO | 5.69 ± 0.66A,a | 36.44 ± 11.95A,b | 73.26 ± 14.82AC,c | 101.53 ± 22.22A,d |
| SFO | 6.18 ± 0.57AB,a | 40.75 ± 9.61A,b | 105.25 ± 7.47B,c | 137.26 ± 4.31B,d | |
| SO | 7.55 ± 0.81BD,a | 41.44 ± 8.51A,b | 81.78 ± 8.96A,c | 106.40 ± 12.39A,d | |
| CSO | 10.05 ± 0.46C,a | 33.34 ± 1.14A,b | 58.19 ± 3.33C,c | 95.43 ± 12.45A,d | |
| SSO | 8.88 ± 2.05CD,a | 34.50 ± 8.56A,b | 76.59 ± 13.93A,c | 92.09 ± 11.30A,c | |
| TOTOX | CO | 7.34 ± 0.69A,a | 41.44 ± 12.62A,b | 78.87 ± 15.43A,c | 112.02 ± 26.09A,d |
| SFO | 6.91 ± 0.67A,a | 62.99 ± 10.53B,b | 129.69 ± 1.43B,c | 166.35 ± 3.31B,d | |
| SO | 8.53 ± 0.80A,a | 58.13 ± 8.37B,b | 103.60 ± 8.67C,c | 131.93 ± 12.49A,d | |
| CSO | 13.47 ± 0.47B,a | 41.64 ± 3.03A,b | 72.90 ± 3.63A,c | 112.36 ± 10.52A,d | |
| SSO | 13.65 ± 1.94B,a | 62.71 ± 4.54B,b | 110.16 ± 17.57C,c | 127.57 ± 11.36A,c | |
| TPC | CO | 6.33 ± 0.25AB,a | 10.00 ± 0.54AC,b | 12.50 ± 1.22AB,c | 16.50 ± 1.44A,d |
| SFO | 6.75 ± 0.27A,a | 10.58 ± 0.58A,b | 15.41 ± 1.02C,c | 18.83 ± 0.40B,d | |
| SO | 6.08 ± 0.20B,a | 8.83 ± 0.40B,b | 10.25 ± 0.61D,c | 15.83 ± 0.60A,d | |
| CSO | 6.25 ± 0.27B,a | 9.58 ± 0.37BC,b | 11.41 ± 1.31AD,c | 15.91 ± 0.37A,d | |
| SSO | 6.45 ± 0.24AB,a | 10.25 ± 0.52AC,b | 13.91 ± 1.59BC,c | 18.75 ± 0.52B,d | |
| FFA | CO | 0 ± 0A,a | 0.31 ± 0.04AC,b | 0.53 ± 0.12AB,c | 0.86 ± 0.16A,d |
| SFO | 0 ± 0A,a | 0.38 ± 0.04C,b | 0.80 ± 0.10B,c | 1.08 ± 0.09B,d | |
| SO | 0 ± 0A,a | 0.18 ± 0.04B,b | 0.35 ± 0.05A,c | 0.81 ± 0.07A,d | |
| CSO | 0 ± 0A,a | 0.28 ± 0.04A,b | 0.45 ± 0.10A,c | 0.83 ± 0.05A,d | |
| SSO | 0 ± 0A,a | 0.35 ± 0.05AC,b | 0.68 ± 0.14B,c | 1.06 ± 0.08B,d | |
| TBARs | CO | 1.07 ± 0.07A,a | 2.93 ± 0.49AB,b | 3.54 ± 0.68AB,c | 4.68 ± 1.00AB,d |
| SFO | 0.58 ± 0.12B,a | 2.31 ± 0.35A,b | 3.33 ± 0.46A,c | 3.70 ± 0.58A,d | |
| SO | 0.91 ± 0.10A,a | 3.24 ± 0.47B,b | 3.92 ± 0.21AB,c | 5.73 ± 1.52B,d | |
| CSO | 1.33 ± 0.05C,a | 3.24 ± 0.56B,b | 4.24 ± 0.24B,c | 5.44 ± 0.59B,d | |
| SSO | 1.46 ± 0.16C,a | 3.21 ± 0.30B,b | 3.99 ± 0.36AB,c | 4.93 ± 0.49AB,d | |
| CD | CO | 3.42 ± 0A,a | 4.51 ± 0.46A,b | 7.03 ± 1.34A,c | 11.02 ± 1.12A,d |
| SFO | 1.65 ± 0.17B,a | 4.52 ± 0.35A,b | 13.40 ± 4.30B,c | 16.01 ± 2.22B,d | |
| SO | 5.27 ± 0.05C,a | 8.15 ± 0.19B,b | 11.33 ± 0.02B,c | 14.10 ± 0.20C,d | |
| CSO | 3.55 ± 0.02A,a | 5.60 ± 0.12C,b | 7.12 ± 0.19A,c | 10.46 ± 0.22A,d | |
| SSO | 3.47 ± 0.03A,a | 7.88 ± 0.64B,b | 13.29 ± 0.52B,c | 16.89 ± 0.19B,d | |
| CT | CO | 2.05 ± 0A,a | 2.39 ± 0.29AC,b | 2.75 ± 0.41A,c | 3.38 ± 0.28A,d |
| SFO | 1.50 ± 0.01B,a | 2.00 ± 0.03B,b | 3.55 ± 0.69B,c | 4.26 ± 0.33B,d | |
| SO | 1.29 ± 0.14C,a | 2.04 ± 0.05B,b | 2.80 ± 0.02A,c | 3.25 ± 0.05A,d | |
| CSO | 1.77 ± 0D,a | 2.18 ± 0.04AB,b | 2.44 ± 0.02A,c | 3.31 ± 0.04A,d | |
| SSO | 1.38 ± 0.03C,a | 2.44 ± 0.06C,b | 3.54 ± 0.06B,c | 4.92 ± 0.63C,d |
CO: corn oil; SFO: sunflower oil; SO: sesame oil; CSO: sesame-corn oil; SSO: sunflower-sesame oil. For each analysis, different small letters in each row show significant differences at level of p < 0.05. For each analysis, different capital letters in each column show significant differences at level of p < 0.05.