Frying period (hr) Tiger nut oil (TNO) Sunflower oil (SO) TNO + SO(v/v) 10: 90   20:80      30: 70   40: 60       50: 50
0 0.04x ±0.01 0.07vwx ±0.01 0.04wx ±0.02 0.05wx ±0.01 0.05wx ±0.01 0.06 wx ±0.01 0.06 ±0.00
5 0.11uv ±0.05 0.16tu ±0.04 0.15tu ±0.04 0.15 tu ±0.03 0.14 tu ±0.02 0.14 tu ±0.01 0.10 vw ±0.00
10 0.15tu ±0.06 0.32o ±0.04 0.25pqr ±0.03 0.20rst ±0.05 0.20rst ±0.02 0.19st ±0.03 0.15tu ±0.02
15 0.21qrs ±0.06 0.53ij ±0.03 0.52ij ±0.02 0.49jkl ±0.04 0.46klm ±0.00 0.42mn ±0.02 0.26pq ±0.03
20 0.27op ±0.01 0.79b ±0.02 0.59gh ±0.03 0.55hi ±0.04 0.50ijk ±0.05 0.49jkl ±0.05 0.40n ±0.06
25 0.30op ±0.00 0.92a ±0.01 0.72c ±0.03 0.71cd ±0.02 0.66def ±0.04 0.60fg ±0.02 0.44lmn ±0.00
30 0.55hi ±0.04 0.97a ±0.02 0.81b ±0.01 0.73c ±0.03 0.70cde ±0.01 0.65ef ±0.09 0.61fg ±0.01
LSD at 0.05 =   0.05124
Data are expressed as mean ± SD. Values given represent means of three determinations Values followed by the same letter are not significantly different (p<0.05)
Table3: Changes in thiobarbituric acid value (Absorbance at 532 nm) of sunflower blended with different portions of Tiger nut oil during deep fat frying at (180°C ± 5°C).