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Method for extracting benzyl isothiocyanate from papaya seeds

A technology of benzyl isothiocyanate and extraction method, which is applied in the direction of organic chemistry, can solve the problems of high cost, flammability and explosion, complex process, etc., and achieve the effect of low cost, short extraction time and simple process

Inactive Publication Date: 2014-07-30
COCONUT RES INST OF CHINESE ACAD OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing benzyl thiocyanate mainly contains artificial synthesis method and extraction method, and synthetic method includes phosgene method, thiophosgene method and thiourea decomposition method etc., and process is complicated, and equipment cost is high, and the chemical substance used is poisonous or Flammable and explosive, low safety factor, and complicated steps are required to obtain high-purity isothiocyanate
And Chinese patent application (201010271962.2) discloses a kind of development process of papaya seed extract, and extraction process is complicated, and cost is high, and reagent consumption is big, and extraction purity is not high

Method used

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  • Method for extracting benzyl isothiocyanate from papaya seeds
  • Method for extracting benzyl isothiocyanate from papaya seeds
  • Method for extracting benzyl isothiocyanate from papaya seeds

Examples

Experimental program
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Effect test

Embodiment 1

[0042] 1.1 Experimental materials

[0043] Papaya, purchased in the fruit market; anhydrous sodium sulfate, analytically pure

[0044] 1.2 Experimental equipment

[0045] Plant essential oil extractor, electric heating mantle, syringe, 45um microporous filter membrane, essential oil bottle, refrigerator, heating mantle.

[0046] 1.3 Experimental method

[0047] 1.3.1 Drying method

[0048] 1) Cut the papaya open, take out the papaya seeds, remove the pulp as much as possible, put it on a tray and dry it in an oven at 50-60°C for 36-56 hours until the moisture content of the papaya seeds drops below 16%. Take it out and seal it in a ziplock bag, store it at room temperature, and keep it for later use.

[0049] 2) 300 grams of dried papaya seeds obtained in step 1) are pulverized, and the particle size of the powder is between 40-80 mesh.

[0050] 3) Put 100 grams of papaya seed powder obtained in step 2), add 700 grams of water, put it into a 1000ml round bottom flask, sti...

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Abstract

The invention discloses a method for extracting benzyl isothiocyanate from papaya seeds. The method is characterized by comprising the following steps: putting the crushed papaya seeds in a plant essential oil extractor, adding a proper amount of water, then heating to be boiled and distilled for certain time, cooling and collecting a benzyl isothiocyanate and water mixture at the bottom of the essential oil extractor, and removing water to obtain the benzyl isothiocyanate. According to the method, the high-purity benzyl isothiocyanate compound can be extracted directly from papaya seeds by using the matured-technology and low-cost plant essential oil extraction equipment, the method is simple in technology and short in extraction time, and the purity of the obtained benzyl isothiocyanate is more than 98%.

Description

technical field [0001] The invention belongs to the technical field of natural products, and in particular relates to a convenient method for extracting high-purity benzyl isothiocyanate from papaya seeds. Background technique [0002] Papaya (Caricapapaya L.), also known as Longevity Fruit, belongs to the genus Caricapapaya, and is used for both medicine and food. "Compendium of Materia Medica Supplements" calls it "papaya", and "Modern Practical Chinese Medicine" and "Chinese Materia Medica" call it "papaya", which has extremely high nutritional, health care and medicinal value. [0003] Benzyl thiocyanate (also known as: benzyl isothiocyanate) is an important secondary metabolite in cruciferous plants, which has a good effect on the prevention of various cancers. Studies have shown that papaya seeds contain isothiocyanate compounds (ITCs) with anticancer activity. So far, more than 20 kinds of natural or synthetic isothiocyanate compounds (ITCs) have been studied, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C331/24
Inventor 邓福明陈卫军梁淑云李成张涛
Owner COCONUT RES INST OF CHINESE ACAD OF TROPICAL AGRI SCI
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