Acid value, carbonyl value, peroxide value, saponification value, color and polarity compounds were selected to study the effect of magnesium silicate on frying oil. The results showed that acid value, carbonyl value, peroxide value, saponification value and polarity compounds of frying oil treated by magnesium silicate decreased, color shallowed and transparency improved; and the optimal adding amount of magnesium silicate was 1%. |