Production method for high-quality vegetable oil

Abstract

The invention discloses a production method for high-quality vegetable oil. The method comprises the following steps: separating non-oilseed impurities by integrating screening, winnowing, magnetic separation, color sorting and water separation devices, thereby acquiring clean fresh oilseeds; using hot air for preheating the oilseeds to 40 DEG C-55 DEG C, starting microwave processing and ending when the temperature is increased to 130 DEG C-170 DEG C; performing micro-mist jetting treatment and then performing wet film treatment, wherein the treatment time is 20min-35min and the temperature of the oilseeds after tempering is 40 DEG C-60 DEG C; adopting a screw oil press for squeezing the oilseeds under low temperature, thereby acquiring squeezed oil and squeezed cake; and heating the squeezed oil to 20 DEG C-50 DEG C; adding sodium bentonite, crystallized soda and a xanthan gum complexing agent in turn while stirring, filtering and separating. The production method has the advantages of short oil-preparing process chain, high oil-preparing efficiency, high product quality, low energy consumption and refining consumption, environmental protection, and the like.

Description

technical field [0001] The invention belongs to the technical field of oil processing and specifically relates to a production method of high-quality vegetable oil. Background technique [0002] The existing vegetable oil production technology mainly adopts flaking-steaming-pre-pressing and leaching technology, the purpose is to squeeze out the oil as thoroughly as possible. Generally, the oilseeds are flaked first, and then steamed and fried at a high temperature of 110-130°C for 30 ~40 minutes, not only consumes a lot of electricity and steam, but also due to serious damage to oilseed cells, complex biochemical reactions have occurred, resulting in dark color of crude oil, high acid value and phospholipid content, spicy flavor, serious oil oxidation and other problems, follow-up must go through Excessive refining such as degumming, deacidification, decolorization, and deodorization (240-260°C) can make the product meet the relevant national standards, and chemical reagents...

AI Technical Summary

Problems solved by technology

[0003] CN 1840623A discloses a method of low-temperature oil production from oil plants and oil-seed protein production. Crude oil is produced by peeling and low-temperature pressing. The crude oil is precipitated and finely filtered to obtain finished oil. The method is easy to operate and low in energy consumption, but Methods such as in-depth selection of oilseeds, microwave hot air conditioning and low-temperature refining of oils are not involved

[0004] CN 102517141A discloses a method for producing camellia oil at low temperature. Physical methods are used in the whole production process, and the treatment temperature is lower than 100°C. However, this process is only suitable for the processing of camellia oil seeds; however, it does not involve the deep selection of oil seeds , Microwave hot air conditioning and other methods

[0005] CN 102268325A discloses a method for extracting grape seed oil, which uses infrared pretreatment, then separates the grape seeds, and then adopts hydraulic pressing to obtain the finished grape seed oil; however, it does not involve deep selection of oil seeds, Methods such as microwave hot air conditioning and oil low temperature refining

[0006] CN 102002427A discloses a method for preparing peanut germ oil, which adopts a physical refining method combining low-temperature tempering, low-temperature pressing, low-temperature drying and dehydration, and filtration to prepare peanut germ oil, but does not involve deep selection of oilseeds, Methods such as microwave hot air conditioning and oil low temperature refining

[0007] CN 102293264A Moderately processed vegetable oil and its preparation method, using low-temperature degumming, low-temperature alkali refining, decolorization and deodorization technologies, the purpose is to reduce the generation of trans fatty acids and save energy and reduce consumption by reducing the refining temperature, but does not involve oilseeds Deep selection, microwave hot air conditioning and low-temperature refining of oil and other methods

[0008] From the perspective of the above-mentioned vegetable oil production methods, these processes either have insufficient raw material cleaning, or have low conditioning efficiency, or have low pressing efficiency, or have problems such as long process chain, high energy consumption, high refining consumption, and large discharge of three wastes. At the same time, it still needs to be improved in terms of production automation control and standardized management