Preparation method for high-purity rice bran oil

Abstract

The invention mainly relates to the technical field of oil processing, and discloses a preparation method for high-purity rice bran oil. The preparation method comprises the following steps: soaking,lactic acid fermentation, yeast fermentation, drying and squeezing. The method is simple and is convenient to operate, and the obtained rice bran oil is relatively high in purity, and a later-stage purifying process does not need to perform, so that production cost is reduced by 18.7%. The preparation method specifically comprises the following steps: adding a vitamin C solution into rice bran tokeep nutritional ingredients in rice bran and prevent color of rice bran from being darkened; and introducing lactic acid bacteria into the rice branch to ferment to decompose colloids and wax in therice bran. The method is simple, increases nutritional ingredients of small molecules, avoids adding a chemical reagent at a later stage to perform degumming and dewaxing, is silent and environmentally friendly, saves energy resources, reduces the production cost, and keeps flavor and nutrients of the rice bran oil; angel brewer's yeast is added to perform high-temperature fermentation after lactic acid fermentation, so that activity of glucosidase is improved, and free fatty acid and dark-color components in rice bran are decomposed, and therefore, the preparation method is efficient and quick, is green and environmentally friendly, and reduces a great deal of production cost.

Description

technical field [0001] The invention mainly relates to the technical field of oil processing, in particular to a method for preparing high-purity rice bran oil. Background technique [0002] Rice bran oil is a nutrient-rich vegetable oil. It is another healthy food oil produced after sunflower oil and corn germ oil. Long-term consumption of rice bran oil has the functions of preventing cardiovascular and cerebrovascular diseases, promoting metabolism and anti-aging; At the same time, rice bran oil also contains a large amount of unsaturated fatty acids, with a content of more than 80%. As far as my country's current situation is concerned, the annual output of rice bran in the country is very large. The scale is small, and it is difficult to concentrate rice bran for further processing and value-added. Only a small amount is used to make rice bran oil, so that rice bran oil can be comprehensively utilized and its nutritional value can be reused, while a large amount of rice br...

AI Technical Summary

Problems solved by technology

[0002] Rice bran oil is a nutrient-rich vegetable oil. It is another healthy food oil produced after sunflower oil and corn germ oil. Long-term consumption of rice bran oil has the functions of preventing cardiovascular and cerebrovascular diseases, promoting metabolism and anti-aging; At the same time, rice bran oil also contains a large amount of unsaturated fatty acids, with a content of more than 80%. As far as my country's current situation is concerned, the annual output of rice bran in the country is very large. The scale is small, and it is difficult to concentrate rice bran for further processing and value-added. Only a small amount is used to make rice bran oil, so that rice bran oil can be comprehensively utilized and its nutritional value can be reused, while a large amount of rice bran is only used to feed pigs, cattle, and sheep. The added value of rice bran oil is very low; and in the current preparation method of rice bran oil, purification processes such as dewaxing, degumming, decolorization and deacidification are carried out after the rice bran oil is extracted. cost