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| Influence of phospholipids composition in crude soybean oil on phospholipase A1 deep degumming |
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| KeyWord:crude soybean oil phospholipids composition phospholipase A1 degumming |
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| Abstract: |
| In order to ensure a smooth operation for following refining, the phosphorus content in crude soybean oil should be reduced below 10 mg/kg by degumming. The deep degumming effect of 22 kinds of crude soybean oils from different origins with phospholipase A1 (PLA1) was studied. The results showed that the phospholipids composition in crude soybean oil had influences on the effect of PLA1 deep degumming. The phosphatidic acid (PA) ratio had a remarkable and positive correlation with phosphorus content in PLA1 deep degummed oil(p＜0.01). The phosphatidylcholine(PC) ratio had a negative correlation with phosphorus content in PLA1 deep degummed oil(p＜0.05). The ratio of PA to PC had a remarkable and positive correlation with phosphorus content in PLA1 deep degummed oil(p＜0.01). The degumming effect of the crude soybean oil with higher content of PA and lower content of PC was relatively poor. However, the phosphorus contents in PLA1 deep degummed oil were ordinarily below 10 mg/kg to satisfy the requirements of following refining. |
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