Method for producing peanut oil

Abstract

The invention discloses a method for producing a peanut oil. The method comprises the following steps: pressing peeled peanut kernels to obtain a crude peanut oil A and peanut residues; adding ethanolto the peanut residues, stirring for 20-30 min, and performing supercritical carbon dioxide extraction to obtain a crude peanut oil B; mixing the crude peanut oil A with the crude peanut oil B to obtain a mixed crude oil, and refining the mixed oil to obtain the peanut oil. The method for producing the peanut oil provided by the invention adopts a production process of combining pressing with supercritical carbon dioxide extraction, and improves the purity and yield of the peanut oil; the peanut oil has substantially lossless nutrient components and is a natural green edible oil.

Description

Technical field [0001] The invention relates to the field of edible oil processing, in particular to a production method of peanut oil. Background technique [0002] Peanuts, also known as peanut kernels and peanuts, are well-known and commonly used foods rich in fats. They are grown and widely used all over the world. It contains protein, fat, carbohydrates, vitamins (A, B2, B6, D, E, K), calcium, phosphorus, iron and other minerals. It contains 8 kinds of amino acids and unsaturated fatty acids required by the human body. Lecithin, choline, carotene, crude fiber and other substances. The fat content is 44%-51%, the protein content is 24%-36%, and the sugar content is about 20%. It can be seen that peanuts are rich in nutrients and functional components, and have various health functions such as promoting the development of human brain cells, enhancing memory, improving and protecting the cardiovascular and cerebrovascular. [0003] Peanut oil is light yellow, transparent, clea...

AI Technical Summary

Problems solved by technology

The main disadvantages of the pressing method are low oil yield, high residue oil, unhygienic products, low reuse value of the residue, easy growth of microorganisms in the residue, and the oil may contain trace amounts of toxic protein substances.

The solvent extraction method mainly refers to the use of solvent oil (hexane, etc.) to extract the crushed peanuts at high temperature for a long time, and then obtain peanut oil through complex refining steps such as filtration, decolorization, deacidification, deodorization, dephosphatization, and dehydration. The disadvantages of this method are: the slag is damaged by high temperature and the residual solvent is high, so its reuse value is not high; the production process is complicated and there are serious safety hazards; the production cost is high; there are many organic solvents in the product; there is a lack of raw materials in the oil Inherent functional nutrients (such as vitamin E, phytosterols, phospholipids, carotenoids, etc.), and these functional nutrients have a good health care effect on people and antioxidant functions on products; the taste of oil is poor