Production process of low-oil-fume sunflower seed oil

Abstract

The invention discloses a production process of low-oil-fume sunflower seed oil. The production process of the low-oil-fume sunflower seed oil comprises the following steps: degumming, deacidifying, washing with water, centrifuging, performing vacuum drying, performing winterization, decoloring, deodorizing, cooling and performing refined filtration, wherein the deodorizing process comprises the following steps: vacuumizing until the vacuum degree is not more than 2.0 mbar, performing heating circulation on a plate type tower, opening stripped vapor in the plate type tower when the oil temperature in the plate type tower reaches 180 DEG C, stirring and trapping fatty acid, wherein the trapping temperature is 40 to 60 DEG C; and when the oil temperature in the plate type tower reaches 220 to 260 DEG C, pumping the sunflower seed oil into a filling tower, entering the plate type tower and performing deodorization. Through improvements on the process condition, particularly on the deodorizing process, the quality of the obtained sunflower seed oil is greatly improved. The quantity of the oil fume generated when the sunflower seed oil produced by the production process is heated at high temperature is small; in the sunflower seed oil, the nutrient content is high and the trans-fatty acid content is extremely low.

Description

technical field [0001] The invention relates to a production process of edible oil, in particular to a production process of sunflower seed edible oil. Background technique [0002] At present, there are many problems to be solved in the preparation technology of sunflower oil in the prior art, for example: [0003] 1) In order to ensure the quality of the sunflower oil produced, the process conditions in the refining process are harsh. Once the process conditions are not met, the quality of the sunflower oil obtained will be reduced. For example: the existing technology uses a single tower structure for deodorization. Improper control of the high-pressure boiler makes the deodorization excessively high temperature, which will cause the value of trans fatty acid in the obtained sunflower oil to be 4 to 5 times the normal value; another example: the deodorization equipment or the finished product storage tank equipment are made of carbon steel, and the oil is cooled Inapprop...

AI Technical Summary

Problems solved by technology

[0003] 1) In order to ensure the quality of the sunflower oil produced, the process conditions in the refining process are harsh. Once the process conditions are not met, the quality of the sunflower oil obtained will be reduced. For example: the existing technology uses a single tower structure for deodorization. Improper control of the high-pressure boiler makes the deodorization excessively high temperature, which will cause the value of trans fatty acid in the obtained sunflower oil to be 4 to 5 times the normal value; another example: the deodorization equipment or the finished product storage tank equipment are made of carbon steel, and the oil is cooled Inappropriate, resulting in the addition of unnecessary antioxidants, resulting in poor oil preservation quality

[0004] 2) Disadvantages of the plate tower single tower: the control of the deodorization time cannot be flexibly adjusted

Long-term deodorization retention will easily cause slight hydrolysis of neutral oil in the deodorization tower, which will increase the content of free fatty acids, and may also produce new oil polymers. What is more serious is the gradual increase in the content of trans fatty acids in deodorized oil.

[0005] 3) Disadvantages of packed single tower: the main function is physical deacidification, and the deodorization effect is not as obvious as that of the plate deodorization tower. Because the liquid film of oil is very thin, the residence time of the deodorized oil in the tower is short, and the heat-sensitive pigment in the decolorized oil cannot Completely decomposed, the effect of thermal decolorization is not as good as that of plate tower, and the effect of deacidification is not obvious

[0006] 4) In the process of refining sunflower seed crude oil into sunflower seed oil, the refining is mostly operated by the operator based on experience. In order to increase the smoke point, the oil will produce trans fatty acids under high temperature and high vacuum, which will cause harm to the human body.

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