Method for degumming fragrant rap oil through enzymic process

Abstract

The invention discloses a method for degumming fragrant rap oil through an enzymic process. The method is characterized by comprising the following steps: heating the squeezed fragrant crude rap oil without impurities to about 40 DEG C, adding a 50% citric acid aqueous solution according to 0.1% by weight of the oil, mixing the 50% citric acid aqueous solution with the fragrant crude rap oil, mixing and stirring at a rate of 50-60r / min, and stirring for one hour; adding soft water according to 1.8% by weight of the oil, adding a phospholipase A, phospholipase B or phospholipase C solution diluted to 100 times according to 0.13% of the total mass of oil and water, simultaneously stirring and reacting for 60 minutes at a rate of 40-50r / min under the temperature of 30-50 DEG C, filtering or centrifugally separating, and drying to obtain the finished product of the fragrant rap oil.

Description

technical field [0001] The invention relates to a method for degumming fragrant rapeseed oil, in particular to a method using phospholipase A 1 or phospholipase A 2 A method for removing phospholipid colloids in fragrant rapeseed oil. Background technique [0002] The existing method for preparing fragrant rapeseed oil by degumming crude fragrant rapeseed oil as raw material is to adopt hydration degumming and acid degumming. Water degumming is to use the hydrophilicity of phospholipids and other colloids, add hot water to the oil under stirring, so that the phospholipids absorb water and swell and condense, and the expanded oil can absorb other colloids in the oil, so that the colloids in the oil Solubility decreased, separated from oil by natural sedimentation. Acid degumming is to heat the crude oil first, then fully mix it with phosphoric acid or citric acid solution to react, then add water and then separate. [0003] Hydration degumming can only remove hydratable p...

AI Technical Summary

Problems solved by technology

Whether it is hydration degumming or acid degumming, it cannot remove the non-hydratable phospholipids well, which affects the effect of degumming

If the degumming effect is not good, it will increase the burden of subsequent decolorization, deacidification and deodorization, and increase the loss of oil refining and the consumption of auxiliary materials

Difficulty in filtration, coking of equipment, increased consumption of white clay, low refining yield, and high phosphorus content is often accompanied by more metal ions, resulting in easy rancidity and color reversion of oil, affecting oil quality and economic benefits

At the same time, it is easy to have adverse effects on the equipment, such as coking of equipment affects the heat transfer effect, the filter screen is easily blocked and affects the filtration speed, resulting in difficult decolorization and increased clay consumption.

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