Table 4. The peroxide value (PV) and anisidine value (AV) of the kolkhoung kernel oil during at heating process 100, 110 and 120 °C.
| Time/h | Temperature/°C | |||||||
|---|---|---|---|---|---|---|---|---|
| 100 | 110 | 120 | ||||||
| PV/(meq O2 per kg of oil) |
AV | PV/(meq O2 per kg of oil) |
AV | PV/(meq O2 per kg of oil) |
AV | |||
| 0 | (3.44±0.08)jB | (4.20±0.06)jA | (3.44±0.08)jB | (4.20±0.06)jA | (3.44±0.08)jB | (4.20±0.06)jA | ||
| 4 | (5.56±0.09)iC | (5.08±0.08)iD | (6.14±0.03)iB | (5.66±0.07)iC | (7.01±0.04)iA | (6.17±0.05)iB | ||
| 8 | (7.85±0.03)hD | (6.35±0.05)hF | (9.12±0.04)hC | (7.02±0.07)hE | (15.60±0.07)hA | (10.10±0.04)hB | ||
| 12 | (10.40±0.07)gE | (7.84±0.04)gF | (16.48±0.06)gB | (11.05±0.10)gD | (20.11±0.05)gA | (13.20±0.08)gC | ||
| 16 | (12.47±0.05)fE | (8.91±0.08)fF | (20.88±0.06)fB | (13.80±0.05)fD | (26.30±0.08)fA | (16.38±0.07)fC | ||
| 20 | (19.08±0.09)eD | (12.94±0.07)eF | (25.50±0.07)eB | (17.01±0.09)eE | (30.90±0.08)eA | (19.60±0.06)eC | ||
| 24 | (23.60±0.05)dC | (16.25±0.05)dF | (30.14±0.07)dB | (20.03±0.05)dE | (35.40±0.05)dA | (22.90±0.08)dD | ||
| 28 | (28.20±0.06)cC | (18.80±0.09)cF | (34.07±0.10)cB | (22.59±0.08)cE | (40.30±0.14)cA | (26.30±0.06)cD | ||
| 32 | (33.40±0.04)bC | (19.91±0.09)bF | (38.70±0.10)bB | (25.63±0.08)bE | (45.12±0.10)bA | (29.70±0.06)bD | ||
| 36 | (40.05±0.14)aC | (23.13±0.08)aF | (43.36±0.09)aB | (28.50±0.07)aE | (50.17±0.13)aA | (33.11±0.06)aD |
Mean values±S.D. (standard deviation) within a column with the same lowercase letters are not significant at p<0.05 Mean values±S.D. (standard deviation) within a row with the same uppercase letters are not significant at p<0.05