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| Effect of ascorbyl palmitate on the storage stability of maize oil |
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| KeyWord:ascorbyl palmitate maize oil antioxidation stability |
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| Abstract: |
| The Rancimat method was used to determine the oxidation induction time(OSI) of maize oil with different dosage of ascorbyl palmitate (AP) to screen out the AP dosage 150 mg/kg as the target dosage to maize oil with a similar OSI to that of 50 mg/kg tert-butyl hydroquinone(TBHQ), then the accelerated storage test of maize oil was carried out for six weeks. In order to evaluate the effect of AP on the stability of maize oil during storage, samples were taken out every 7 d from AP groups (150 mg/kg), TBHQ group (dosage 50 mg/kg), nitrogen filling group and blank group to analyse acid value, peroxide value, color reversion (red value), phytosterol content and vitamin E content. The results showed that during storage, AP group did not have any significant difference in acid value, peroxide value, color reversion (red value) and phytosterol content compared with TBHQ group and nitrogen filling group. However, the addition of AP significantly increased the retention of vitamin E in maize oil compared with adding TBHQ and nitrogen filling. |
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