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Method for simultaneously extracting limonin and crude fat from pomelo nucleus by using solvent acetone

A technology of limonin and crude fat, applied in chemical instruments and methods, fat production, separation methods, etc., can solve the problems of high cost and complicated process, and achieve the effect of simple operation, low boiling point, and easy recycling

Active Publication Date: 2018-10-23
ZHONGKAI UNIV OF AGRI & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the problems of extracting only one kind of substance, limonin or crude fat, high cost and complex process in the prior art, and provide a simple, practical, low-cost and suitable for large-scale industrial production. A method for simultaneously extracting limonin and crude fat from pomelo cores using a solvent without complex equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Weigh 10 kg of pomelo kernels with a moisture content of 18%, break them, pass through a 30-mesh sieve, and pour them into an extraction tank. Measure 100kg of acetone aqueous solution with a volume fraction of 99.5% into the extraction tank, extract once at 45°C, recover the solvent to obtain a mixed solution containing crude fat and limonin, add 95% ethanol water solvent to the mixed solution, Separate the light phase crude fat and the heavy phase limonin solution, and recover the solvent to obtain the product limonin. The recoveries of limonin and crude fat at different extraction times are shown in Table 1.

[0035] Table 1 Recovery rate of limonin and crude fat at different extraction times

[0036] Extraction time (min)

Embodiment 2

[0038] Weigh 15kg of grapefruit kernels with a water content of 15%, crush them, pass through a 30-mesh sieve, and pour them into an extraction tank. Measure 150 kg of acetone aqueous solution with a volume fraction of 95% into the extraction tank, extract for 60 minutes at a temperature of 50°C, and recover Solvent, to obtain a mixed solution containing crude fat and limonin, add 70% ethanol water solvent to the mixed solution, separate the light phase crude fat, heavy phase limonin solution, and recover the solvent to obtain the product limonin. The recoveries of limonin and crude fat at different extraction times are shown in Table 2.

[0039] Table 2 Recovery rate of limonin and crude fat at different extraction times

[0040] Extraction times (times)

Embodiment 3

[0042] Weigh 20 kg of pomelo kernels with a moisture content of 12%, break them, pass through a 35-mesh sieve, and pour them into an extraction tank. Measure the acetone solvent into the extraction tank, extract 4 times, each time for 40 minutes, the temperature is 50 ° C, recover the solvent, and obtain a mixed solution containing crude fat and limonin, add 65% ethanol water solvent to the mixed solution, and separate The light phase is crude fat, the heavy phase is limonin solution, and the solvent is recovered to obtain the product limonin. The influence of acetone solvent dosage and the volume fraction of acetone in the solvent on limonin and crude fat recovery, as shown in Table 3.

[0043] The impact of the volume fraction of acetone in table 3 acetone dosage and solvent on limonin and crude fat recovery

[0044] Acetone consumption (kg)

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PUM

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Abstract

The present invention relates to a method for simultaneously extracting limonin and crude fat from pomelo nucleus by using a solvent acetone. The method comprises: (1) pretreatment: peeling pomelo nucleus to obtain pomelo nucleus kernel, drying the pomelo nucleus kernel, and breaking; (2) extraction: adding an acetone solvent to the broken pomelo nucleus kernel, extracting 1-7 times, and recovering the solvent to obtain a mixture; and (3) separation: adding an ethanol aqueous solution with a volume fraction of 50-95% to the mixture, stirring, carrying out static layering or centrifugation to obtain crude fat and an ethanol solution containing limonin, and recovering the solvent in the solution to obtain limonin. According to the present invention, limonin and crude fat are simultaneously extracted from the pomelo nucleus by using the one solvent acetone, wherein the recovery rates of limonin and crude fat can respectively achieve more than 95% under the preferred conditions, the product is easy to separate, and acetone is the renewable solvent, has the low boiling point, and is easily recycled; the method is easy to enlarge, can be used for large-scale production, does not requirecomplicated equipment, and is easy to operate; and the prepared limonin can be used as the drug preparation raw material, and the crude fat can be used as food and feed after being refined, and can beused as the raw material for the preparation of fine chemicals, slow release fertilizers or controlled release fertilizers.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of pomelo seeds, and specifically relates to a method for simultaneously extracting limonin and crude fat from pomelo seeds by using a solvent—acetone. Background technique [0002] Pomelo core, also known as pomelo core, is the seed of Citrus maxima (Burm.) Merr., a Rutaceae plant, which is rich in limonin, crude fat, flavonoids and fat-soluble vitamins. Discarded pomelo cores not only result in a waste of resources, but also put enormous pressure on the environment. Limonin is a class of compounds that can replace part of the furan ring. It has certain biological activities. The most important thing is that it can be used to prevent cancer. At the same time, it also has anti-oxidation, inhibits liver microsomal metabolism, and regulates cholesterol levels in the human body. Improve sleep quality, increase appetite, improve digestion, anti-virus and effectively inhibit virus re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07J73/00B01D11/02C11B1/10
CPCB01D11/0288C11B1/10C07J73/008
Inventor 阎杰魏静冯晓萌林海琳陈琪
Owner ZHONGKAI UNIV OF AGRI & ENG
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