Technology for extracting plant oil through aqueous enzymatic method

Abstract

The invention discloses a technology for extracting plant oil through an aqueous enzymatic method. The technology comprises the following steps: grinding oil crops, adjusting the solid to liquid ratio to 1:15-20, adding an enzyme, hydrolyzing for 18-20h, carrying out solid-liquid separation after the above enzymatic hydrolysis ends to obtain a liquid phase oil and water mixture containing a small amount of water-soluble proteins, removing the proteins through an isoelectric precipitation method, further concentrating the liquid phase for 12h, and separating to obtain the oil. Enzymatic hydrolysis conditions are mild, and the temperature of hexane leaching for recovering a solvent after the enzymatic hydrolysis is not higher than 80DEG C, so the energy consumption is obviously lower than that in traditional methods, the performances of oil proteins are well kept, and the simultaneous utilization purpose of oil and proteins is realized; and high temperature treatment of oil is avoided, so the quality of the extracted oil is obviously improved.

Description

technical field [0001] The invention relates to the field of vegetable oil extraction, in particular to a process for extracting vegetable oil by an aqueous enzymatic method. Background technique [0002] The traditional vegetable oil extraction methods are pressing and solvent leaching. Although they have a high oil yield, most oils need to be steamed or baked before pressing or leaching, which will highly denature the oil protein and destroy its cell structure. , to achieve favorable oil production conditions. The above-mentioned process not only has many steps and complex equipment, but more importantly, the protein is seriously denatured after oil extraction, which makes it difficult to use, resulting in a great waste of resources. Contents of the invention [0003] Aiming at the above shortcomings, the present invention provides a process for extracting vegetable oil by aqueous enzymatic method. Due to the mild enzymatic hydrolysis conditions, even if the solvent is ...

AI Technical Summary

Problems solved by technology

The above-mentioned process not only has many steps and complex equipment, but more importantly, the protein is seriously denatured after oil extraction, which makes it difficult to use, resulting in a great waste of resources.