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Method for extracting allicin by using microwave-ultrasonic wave

An ultrasonic and allicin technology, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve the problems of low allicin extraction rate, not fresh enough allicin, and many impurities in the extract, and achieve accelerated extraction efficiency , shorten the extraction time, simple process effect

Inactive Publication Date: 2013-12-11
NANJING ZELANG AGRI DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Steam distillation has the characteristics of simple equipment, low cost, and good stability. It is one of the most commonly used methods. However, due to relatively high fermentation and distillation temperatures, the activity of alliinase decreases, and allicin is lost. The extraction rate is low, and the obtained allicin is not fresh enough; the advantages of the supercritical fluid extraction method are low operating temperature, good product quality, and high extraction yield.
The solvent extraction method has a high yield of allicin, but there are many impurities in the extract, which requires further purification

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: put fresh garlic into acetic acid solution and soak for 10d, take it out, wash with water, crush to obtain deodorized garlic slurry; add 1:3 times of 80% ethanol solution to the above slurry, adjust the pH value to 5, Enzyme hydrolysis for 40 minutes at a temperature of 35°C; add the above-mentioned solvent to the material after enzymatic conversion, so that the weight ratio of garlic pulp and solvent is adjusted to 1:5, put it in a microwave-ultrasonic cooperative extractor, set the microwave power to 250W, and ultrasonically The power is 100W, and the extraction time is 7 minutes; after centrifugation, solid-liquid separation, and precision filtration, nanofiltration is performed, and a circular composite nanofiltration membrane is used to separate and remove macromolecular substances. The pore size of the nanofiltration membrane is 300 μm, the pressure is 0.5MPa, and the temperature at 40°C; the clear liquid after removal of impurities was routinely vacu...

Embodiment 2

[0015] Embodiment 2: put fresh garlic into the acetic acid solution and soak for 13d, take it out, wash with water, break up, obtain the garlic slurry of deodorization; Add 1:4 times of 90% ethanol solution to the above slurry, adjust the pH value to 6.5, Enzyme hydrolysis for 60 minutes at a temperature of 38°C; add the above-mentioned solvent to the enzyme-converted material to adjust the weight ratio of garlic pulp to solvent to 1:6, place it in a microwave-ultrasonic cooperative extractor, set the microwave power to 200W, and ultrasonically The power is 50W, and the extraction time is 5min; after centrifugation, solid-liquid separation, and precision filtration, nanofiltration is performed, and a circular composite nanofiltration membrane is used to separate and remove macromolecular substances. The pore size of the nanofiltration membrane is 250 μm, the pressure is 0.6MPa, and the temperature at 35°C; the supernatant after removal of impurities was routinely vacuum freeze-...

Embodiment 3

[0016] Embodiment 3: put fresh garlic into the acetic acid solution and soak for 15d, take it out, wash with water, break up, obtain the garlic slurry of deodorization; Add 1:5 times of 80% ethanol solution to the above slurry, adjust the pH value to 7, Enzyme hydrolysis for 30 minutes at a temperature of 40°C; add the above-mentioned solvent to the material after enzyme conversion, adjust the weight ratio of garlic pulp to solvent to 1:8, place it in a microwave-ultrasonic cooperative extractor, set the microwave power to 150W, and ultrasonically The power is 80W, and the extraction time is 6 minutes; after centrifugation, solid-liquid separation, and precision filtration, nanofiltration is performed, and a circular composite nanofiltration membrane is used to separate and remove macromolecular substances. The pore size of the nanofiltration membrane is 1000 μm, the pressure is 0.8MPa, and the temperature at 30°C; the clear liquid after removal of impurities was conventionally...

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Abstract

The invention relates to a method for extracting allicin by using microwave-ultrasonic wave. The method comprises the following steps of: pretreating garlic to obtain serous fluid; adding an ethanol solution, adjusting pH, and carrying out enzymatic method conversion; extracting by using a microwave-ultrasonic wave assisted exactor; carrying out membrane separation; freeze-drying to obtain the allicin. According to the method, the garlic is used as a raw material, and the superposition effect of the microwave and the ultrasonic wave is fully utilized, so that the method has the advantages of simple process, low energy consumption, high extraction rate and high purity and is easy for industrial production.

Description

technical field [0001] The invention relates to a method for separating and purifying effective components in plants, in particular to a method for extracting allicin by utilizing microwave-ultrasonic waves. Background technique [0002] Garlic, also known as garlic, garlic, gourd, and garlic, is a plant of the genus Allium in the family Liliaceae, and its nutrients are very rich. my country's "Compendium of Materia Medica" records that garlic has miraculous effects such as detoxifying, dispelling bloat, disinfecting gas, removing wind and breaking cold, invigorating the spleen and treating diarrhea, etc. The hemiproline derivatives in garlic are effective for drug poisoning, pregnancy poisoning, metal poisoning and various allergies. Sexual diseases have a significant effect. Allicin is the main active ingredient of garlic. Its chemical name is diallyl trisulfide. It is an oily liquid. It is not heat-resistant. It is unstable to alkali but stable to acid. etc miscible. Al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P11/00C07C321/18C07C319/28
Inventor 苏刘花
Owner NANJING ZELANG AGRI DEV
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