A method for continuous phase change extraction to remove lectin in castor meal

Abstract

The invention provides a continuous phase transition extraction removal method for agglutinin from castor seed meal. The method comprises the following steps of feeding a castor seed meal raw material in an extraction kettle, causing the castor seed meal raw material to flow through the extraction kettle at flow velocity of 120 L / h to 180L / h to be continuously extracted for 50 to 130min at extraction temperature of 60 to 95 DEG C under extraction pressure of 0 to 0.9Mpa, causing the castor seed meal to flow into a resolution kettle after the castor seed meal is extracted, performing resolution at resolution temperature of 65 to 95 DEG C under resolution pressure of -0.095 to -0.07Mpa, performing heating and pressure reduction on an extracting agent to realize the phase transition of the extracting agent into gas, performing instant cooling to realize the phase transition of the gas into liquid, causing the liquid to flow through the extraction kettle, detoxifying the material, and repeating the operation for many times, wherein the extracting agent is 75 to 100 percent methanol or 80 to 95 percent ethanol. Compared with a conventional detoxification process, the continuous phase transition extraction method has the advantages of high detoxification efficiency, few solvent residues and short time, and also has the characteristics of large conventional solvent extraction volume, high batch processing capacity, low production cost and the like.

Description

technical field [0001] The invention belongs to the technical field of animal feed development, and in particular relates to a method for continuous phase-change extraction and removal of lectin in castor meal. Background technique [0002] castor ( Ricinus communis L. ), Euphorbiaceae castor plant, perennial plant, tall plant, multi-branched, yellow-green flowers bloom in late summer every year, spherical fruit, castor bean is generally brown pattern, with white seed inside. It is mainly grown in temperate and tropical regions such as India, Brazil and China. The global production is increasing steadily, reaching 2.77 million tons in 2011, and India, Brazil and China account for more than 80% of the total production, and China's annual output is about 200,000 tons. The economic value of castor is very high. The oil content of castor bean is generally 46%~56%. Castor oil has been used as a lubricant or coating agent in medical and industrial applications or as a component ...

AI Technical Summary

Problems solved by technology

At present, the detoxification process of castor meal mainly involves high pressure and high temperature, acid-base treatment and microbial fermentation. Although the traditional process has a certain removal rate for toxins, high temperature and high pressure are likely to cause excessive damage to amino acids and affect palatability. Alkali treatment causes serious loss of nutrients, microbial fermentation takes too long to detoxify, etc.