Method for removing ricin in castor pulp by continuous phase-change extraction

A technology for ricin and castor meal, which is applied in the field of continuous phase change extraction to remove ricin in castor meal, can solve the problems of long time for microbial fermentation and detoxification, loss of nutrients, influence on palatability, etc. The effect of large-scale industrialized continuous production, ensuring no loss and low production cost

Active Publication Date: 2014-05-07
曹庸
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the detoxification process of castor meal mainly includes 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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 A kind of continuous phase change extraction removes the method for ricin in castor meal, comprises the following steps:

[0028] (1) The castor oil is removed after the castor bean is extracted by low-temperature continuous phase change, so that the oil content is ≤3%, and the castor meal raw material is obtained.

[0029] (2) Weigh 10kg of the processed castor meal raw material, put it into the extraction kettle of the continuous phase change extraction device, feed methanol with a concentration of 100%, flow through the extraction kettle at a certain flow rate, and enter the analysis kettle. The medium phase changes into a gas, and the extracted substance falls into the desorption tank, and the detoxified solvent is cooled into a liquid, and the material is repeatedly detoxified. The extraction conditions are: extraction temperature 95°C, extraction pressure 0.15Mpa, continuous extraction for 180min, flow rate 200L / h, analysis temperature 75°C, analysis ...

Embodiment 2

[0030] Embodiment 2 A kind of continuous phase change extraction removes the method for ricin in castor meal, comprises the following steps:

[0031] (1) The castor oil is removed after the castor bean is extracted by continuous phase change, so that the oil content is ≤3%, and the raw material of the castor meal is obtained.

[0032] (2) Weigh 10kg of the processed castor meal raw material, put it into the extraction kettle of the continuous phase change extraction device, feed methanol with a concentration of 90%, flow through the extraction kettle at a certain flow rate, and enter the analysis kettle. The medium phase changes into a gas, and the extracted substance falls into the desorption tank, and the detoxified solvent is cooled into a liquid, and the material is repeatedly detoxified. The extraction conditions are: extraction temperature 45°C, extraction pressure 0.35Mpa, continuous extraction for 210min, flow rate 210L / h, analysis temperature 85°C, analysis pressure -...

Embodiment 3

[0033] Embodiment 3 A method of phase change extraction of ricin in castor meal, comprising the following steps:

[0034] (1) The castor oil is removed after the castor bean is extracted by continuous phase change, so that the oil content is ≤3%, and the raw material of the castor meal is obtained.

[0035] (2) Weigh 10kg of the processed castor meal raw material, put it into the extraction kettle of the continuous phase change extraction device, feed methanol with a concentration of 80%, flow through the extraction kettle at a certain flow rate, and enter the analysis kettle. The medium phase changes into a gas, and the extracted substance falls into the desorption tank, and the detoxified solvent is cooled into a liquid, and the material is repeatedly detoxified. The extraction conditions are: extraction temperature 75°C, pressure 0.95Mpa, continuous extraction for 180min, flow rate 130L / h, analysis temperature 95°C, analysis pressure -0.09Mpa. After the detoxification is com...

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Abstract

The invention provides a method for removing ricin in castor pulp by continuous phase-change extraction, which comprises the following steps: putting a castor pulp raw material into an extraction kettle, and carrying out continuous extraction at 45-95 DEG C under the extraction pressure of 0.15-0.95 Mpa for 100-250 minutes at the flow rate of 130-210 L / hour; and after extracting the castor pulp, enabling the liquid to flow into a resolution kettle, and resolving at 70-95 DEG C under the pressure of -0.15 to -0.05 Mpa. The extractant is heated under reduced pressure into a gas phase and instantly cooled into a liquid, flows through the extraction kettle, and is subjected to toxin removal; and the cycle is repeated many times. The extractant is 30-100% methanol, ethanol and butanol. The method has the advantages of high toxin removal efficiency, almost no solvent residue and short time, and has the characteristics of high conventional solvent extraction capacity, high batch treatment capacity, low production cost and the like.

Description

technical field [0001] The invention belongs to the technical field of animal feed development, in particular to a method for continuous phase-change extraction and removal of ricin 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. Global production is increasing steadily, reaching 2.77 million tons in 2011, with India, Brazil and China accounting 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 of plastic pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/14C11B1/10
Inventor 曹庸杜洁廖明娟戴伟杰李俊
Owner 曹庸
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