Process for ultrasonic-assisted extraction of flavonoids from camellia chrysantha (Hu)Tuyama

A technology of auxiliary extraction and golden camellia, which is applied in the direction of drug combination, plant raw materials, medical preparations containing active ingredients, etc., can solve the problems of low extraction rate of flavonoids, unfavorable development and utilization of golden camellia, and poor removal ability of extracts, etc. , to achieve extensive development and utilization, good economic and social benefits, and good antioxidant capacity

Inactive Publication Date: 2019-08-23
QIANNAN NORMAL UNIV FOR NATTIES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the extraction of camellia camellia is basically in the primary stage of research at present, and the extraction rate of flavonoids in camellia camellia in the prior art is low, and the scavenging ability of the extract is poor, which is not conducive to the development and uti

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  • Process for ultrasonic-assisted extraction of flavonoids from camellia chrysantha (Hu)Tuyama
  • Process for ultrasonic-assisted extraction of flavonoids from camellia chrysantha (Hu)Tuyama
  • Process for ultrasonic-assisted extraction of flavonoids from camellia chrysantha (Hu)Tuyama

Examples

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Comparison scheme
Effect test

Embodiment 1

[0101] Example 1. A process for ultrasonically assisted extraction of flavonoids in camellia japonica, prepared according to the following steps:

[0102] a. After drying Camellia japonica in a drying oven at 100°C for 20 minutes, pulverize it in an ultra-high-speed pulverizer to 50 mesh, and store it in a low-temperature seal at 3°C ​​to obtain product A;

[0103] b. Ultrasonic extraction of product A with ethanol, the volume fraction of ethanol is 50%, and the material ratio of product A to ethanol is 1:10g·mL -1 , the extraction temperature was 40° C., and the extraction time was 10 minutes to obtain the flavonoid extract of Camellia japonica.

Embodiment 2

[0104] Example 2. A process for ultrasonically assisted extraction of flavonoids in camellia japonica, prepared according to the following steps:

[0105] a. After drying Camellia japonica in a drying oven at 105°C for 30 minutes, pulverize it in an ultra-high-speed pulverizer to 60 mesh, and store it in a low-temperature seal at 4°C to obtain product A;

[0106] b. Ultrasonic extraction of product A with ethanol, the volume fraction of ethanol is 60%, and the material ratio of product A to ethanol is 1:20g·mL -1 , the extraction temperature was 50° C., and the extraction time was 23 minutes to obtain the Camellia flavonoids extract.

Embodiment 3

[0107] Example 3. A process for ultrasonically assisted extraction of flavonoids in camellia japonica, prepared according to the following steps:

[0108] a. After drying Camellia japonica in a drying oven at 110°C for 20 minutes, pulverize it in an ultra-high-speed pulverizer to 70 meshes, and store it in a low-temperature seal at 3°C ​​to obtain product A;

[0109] b. Ultrasonic extraction of product A with ethanol, the volume fraction of ethanol is 70%, and the material ratio of product A to ethanol is 1:30g·mL -1 , the extraction temperature is 60° C., and the extraction time is 25 minutes to obtain Camellia flavonoids extract.

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Abstract

The invention discloses a process for ultrasonic-assisted extraction of flavonoids from camellia chrysantha (Hu)Tuyama. The process comprises the following preparation steps that a, the camellia chrysantha (Hu)Tuyama is dried, crushed and hermetically stored at low temperature to obtain a product A; b, the product A is subjected to ultrasonic extraction by adopting ethanol to obtain a flavonoid extract solution of the camellia chrysantha (Hu)Tuyama, wherein the volume fraction of the ethanol is 50-90%, the material ratio of the product A to the ethanol is 1:(10-50) g.mL<-1>, the extraction temperature is 40-90 DEG C, and the extraction time is 10-30 minutes. The process has the advantages that the extraction rate of the flavonoids in the camellia chrysantha (Hu)Tuyama is high, under the optimal technological conditions, the extraction rate of the flavonoids of the camellia chrysantha (Hu)Tuyama reaches 5.41%, the capabilities of removing DPPH free radicals and ABTS free radicals by theflavonoids of the camellia chrysantha (Hu)Tuyama are improved and reach 74% and 84% respectively, the removal capability of the extract is high, the oxidation resistance is good, the camellia chrysantha (Hu)Tuyama is widely developed and utilized, and the economic and social benefits are good.

Description

technical field [0001] The invention relates to flavonoids in camellia japonica, in particular to a process for extracting flavonoids in camellia japonica assisted by ultrasonic waves. Background technique [0002] Camellia chrysantha (Hu) Tuyama belongs to the family Theaceae and the genus Camellia. Because of its extremely rare yellow color gene KNA, it is also known as the "giant panda in the plant kingdom". Golden camellia contains more flavonoids such as vitesin, quercetin, and kaempferol, among which quercetin and kaempferol are the main ones. Relevant studies have shown that the extract of golden camellia tea leaves can significantly lower blood sugar, and has a strong ability to scavenge hydroxyl radicals (·OH), superoxide ions (O 2 ) ability, and the effect is proportional to the dose. However, the extraction of camellia camellia is basically in the primary stage of research at present, and the extraction rate of flavonoids in camellia camellia in the prior art i...

Claims

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Application Information

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IPC IPC(8): A61K36/82A61P39/06
CPCA61K36/82A61K2236/15A61K2236/17A61K2236/333A61P39/06
Inventor 周才碧宋丽莎周才元王佳菜刘丽明石悦周新杨璐陶旭
Owner QIANNAN NORMAL UNIV FOR NATTIES
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