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Extract products of exopleura of sorghum, extracting method and application

An extraction method and a technology of the outer testa, which is applied in the field of sorghum outer testa extract, can solve the problems of little research on proanthocyanidins, and achieve the effect of auxiliary treatment and prevention of alcoholic liver injury, low price and low price

Inactive Publication Date: 2005-01-12
GUANGDONG FOOD IND INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the extraction raw materials of proanthocyanidins mainly include grape seeds, grape skins, pine bark, etc., and the extraction methods mainly include organic solvent method, supercritical carbon dioxide extraction method and adsorption chromatography, etc., but there are few studies on proanthocyanidins in sorghum outer testa

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Grinding 1 kg of dried sorghum outer testa material to 40 mesh; adding 10 liters of 50% acetone, stirring at reflux for 3 hours at a temperature of 80° C., filtering or centrifuging to remove residue, and concentrating under reduced pressure; adding ammonium sulfate to the concentrate, Make the final concentration 20%, remove the residue by filtration or centrifugation, and obtain the supernatant; add 3 liters of ethyl acetate, extract twice, combine the ethyl acetate layers, concentrate under reduced pressure, add anhydrous sodium sulfate, and collect the filtrate by filtration Add 3 liters of petroleum ether again, let stand at 30°C for 4 hours, filter or centrifuge to collect the precipitate, recrystallize once, and finally dry to obtain about 30 grams of sorghum testa extract, which contains 28.5 grams of proanthocyanidins and 27.0 grams of low Polyproanthocyanidins account for 95% and 90% of the total extract respectively.

Embodiment 2

[0023] Grind 100 kg of sorghum testa through 40 sieves, add 1000 liters of 70% methanol solution, extract at 50°C for 2 hours, filter to remove the residue, concentrate under reduced pressure; add 50 kg of sodium chloride to the remaining solution, and collect the supernatant by filtration liquid; add 600 liters of ethyl acetate for extraction, separate and obtain ethyl acetate, concentrate under reduced pressure; then add 300 liters of petroleum ether, stand at 4°C for 4 hours, filter and collect the precipitate; recrystallize once, and finally dry to obtain 3.2 kg of sorghum The seed coat extract contains 3.04 kg of proanthocyanidins and 2.88 kg of oligomeric proanthocyanidins, accounting for 95% and 90% of the total amount of the extract respectively.

Embodiment 3

[0025] The sorghum testa extract of the present invention is mixed with mannitol or lactose in a ratio of 1:4, pressed into granules, and packaged to make the sorghum testa extract granule with liver-protecting effect. Adults consume 1-10 grams per day, which has a good protective effect on alcoholic liver damage.

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PUM

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Abstract

This invention process consists of procedures of: raw material kaoliang external seed husk is crushed, sieve extracted, vacuum distillation concetrated, filtered, impurity removed; then, extracted, concentrated, added with crystallization agent to separate precipitate. Then it is proceeded with another purification step, to obtain extract of external seed husk of kaoliang with high anti-oxidation function. advantages are: low cost of raw material, simple prodn. process, low pollution, comerciazation prodn., its waste can be used as fodder, the product is used as health-care food benifit to liver.

Description

technical field [0001] The invention relates to a sorghum testa extract, and also relates to a method for extracting the sorghum testa extract and its application in preparing health food with liver-protecting effect. Background technique [0002] Proanthocyanidins are a class of polyphenolic polymers widely present in plants. Since the French professor Jacques Masquelier first extracted proanthocyanidins from the bark of Mediterranean pine in 1951, people have continuously discovered new resources rich in proanthocyanidins in nature, and analyzed and identified their composition and structure. Modern biology and pharmacology have proved that proanthocyanidins are non-toxic, non-carcinogenic, non-distorting, and non-allergic. damage to the body, thereby reducing the occurrence of various diseases caused by the destructive effect of free radicals, such as reducing the incidence of cancer, coronary heart disease, retinopathy caused by diabetes and other diseases; reducing all...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L33/105A61K31/352A61P1/16C07D311/62
CPCY02P20/582
Inventor 吕振岳王庆华钟细娥杨楠李春荣王三永
Owner GUANGDONG FOOD IND INST
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