Aflatoxin-effectively-removing peanut oil extracting method

Abstract

The invention provides an aflatoxin-effectively-removing peanut oil extracting method .The aflatoxin-effectively-removing peanut oil extracting method includes the following steps of pretreating, crude oil preparing, degumming, alkali refining, primary evaporating and separating of a solvent, secondary evaporating and separating of a solvent, dewaxing and deodorizing .By means of the aflatoxin-effectively-removing peanut oil extracting method, pigment and waxiness in grease are effectively removed, removing of aspergillus flavus and producing of peanut oil are combined accordingly, production of the peanut oil is not influenced, the content of the aspergillus flavus is greatly decreased, invariable nutrient substance ingredients are reserved through the produced peanut oil, taste is pure, fragrance is lasting, the requirements of persons for original-taste-and-flavor superfine peanut oil can be met, the reaction condition is wild, operation is easy, and good application prospects are achieved.

Description

[0001] Technical field The invention belongs to the technical field of biochemistry, in particular to a method for extracting peanut oil that effectively removes aflatoxin. Background technique [0002] my country is one of the most important major peanut producing countries in the world, with an output of more than 40% of the world's total output. According to statistics, the annual output of my country's peanuts has reached 15.22 million tons, surpassing that of soybeans (15.2 million tons), and has become the first oil crop in my country. The total output, per unit yield and export volume all rank first in the world. Peanut oil is the most edible and consumed edible oil by ordinary people in our country, but the safety of edible oil based on peanut oil is not optimistic. Aflatoxin contamination of peanut oil is a worldwide problem, and it is the biggest and most important risk faced by peanut oil export and consumption. Aflatoxin is a secondary metabolite produced by Asper...

AI Technical Summary

Problems solved by technology

[0005] At present, the nutritional functionality of peanut oil has been gradually recognized and accepted by consumers, and the development of its production technology has always been concerned and continuously improved. However, there are still problems to be solved urgently: the pigment in peanut oil is insoluble in water, but soluble in oil and organic solvents, so, in the process of oil production, the pigment is produced together with the oil, especially the oil produced by the leaching process has a darker color

Appropriately increasing the decolorization temperature is beneficial to reduce the peroxide value in peanut oil; but when the decolorization temperature exceeds 85°C to 100°C, the adsorption of peroxide by the decolorizer and the oxidation catalysis of peanut oil proceed simultaneously, and the oxidation catalytic effect is greater than the adsorption effect , making the peroxide value of peanut oil increase. In addition, peanut raw materials are susceptible to infection by Aspergillus flavus during storage and transportation. Peanut oil that has not been detoxified after processing often contains excessive aflatoxin (mainly aflatoxin B1), in the process of processing, high temperature is easy to produce benzopyrene, because vegetable oil contains multiple unsaturated double bonds, it is prone to oxidative rancidity in the process of storage and processing

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