Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for extracting compound of carotenoid and flavonoid from leaves of purple operilla

A technology of flavonoids and carotene, which is applied in the production of organic chemistry and bulk chemicals, can solve the problems of high price of fresh leaves, small yield, and ineffective use of natural nutrients, and achieve simple production process and easy The effect of operational control

Inactive Publication Date: 2005-10-26
WUHAN POLYTECHNIC UNIVERSITY
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also people who grow perilla in greenhouses to pick young leaves, wash and dry them at low temperature, and then export them to Korea and Japan as vegetables or kimchi. They can directly ingest carotenoids and flavonoids in perilla leaves, but the fresh leaves are expensive and the yield is low. Small, more importantly, some natural nutrients in perilla leaves have not been effectively utilized

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for extracting compound of carotenoid and flavonoid from leaves of purple operilla

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Example 1: Dry the harvested perilla leaves naturally in the shade or at 30°C, coarsely crush them to 1 mm, and use supercritical CO 2 Extraction, the extraction temperature is 20°C, the extraction pressure is 10Mpa, the extraction time is 5h, and the oily extract and residue are obtained, wherein the oily extract is the extracted carotenoid (content is 300mg / kg), and the concentration is 40% The ethanol extracts the residue after drying or directly dry perilla leaves, the solid-to-liquid ratio is 1:10, the extraction temperature is 30°C, the extraction time is 5h, and the extraction is performed 3 times, and the ethanol extracts are combined, The paste extract obtained after distilling and recovering ethanol is the extracted flavonoids (content is 40mg / g).

Embodiment 2

[0010] Example 2: Dry the harvested perilla leaves at a temperature of 60°C at a low temperature, coarsely crush them to 10 mm, and use supercritical CO 2 Extract, and use perilla oil as the entrainer of extraction, its consumption is by weight: perilla leaf: perilla oil=30: 1 (W / W), and extraction temperature is 45 ℃, and extraction pressure is 40Mpa, and extraction time is 1h, to obtain the oily extract and residue, wherein the oily extract is the extracted carotenoid (content is 1000mg / kg), continue to use 95% ethanol to soak the dried residue or directly dry perilla leaf Extraction, the solid-liquid ratio is 1:20, the extraction temperature is 70°C, the extraction time is 1h, the extraction is performed 5 times, the ethanol extraction solution is combined, and the paste extract obtained after distillation and recovery of ethanol is the extracted flavonoids compound (content is 10mg / g).

[0011] The carotenoids and flavonoids obtained in the above examples can be made into...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The method for extracting carrotenoid and flavone compound from perilla leaf includes the following steps: naturally drying perilla leaf in dark or low-temperature stoving perilla leaf at 30-60 deg.C, pulverizing dried perilla leaf to 1-10 mm, adopting supercritical CO2 extraction, extraction temperature is 20-45 deg.c, extraction pressure is 10-40 MPa and extraction time is 1-5 h. to obtain oil-live extract and residue, said oil-like extract is extracted carrotenoid, then continuously using ethyl alcohol whose concentration is 40%-95% to extract dried residue or directly extract dried perilla leaf, solid-liquid ratio is 1:10-20, extraction temperature is 30-70 deg.C, extraction time is 1-5 h, extracting for 1-3 times, combining ethyl alcohol extracts, distalling to recover ethylalcohol to obtain paste-like extract, namely extracted flavone compound.

Description

technical field [0001] The invention relates to a method for extracting natural components carotenoids and flavonoids from perilla leaves. Background technique [0002] Perilla is an annual herb of Lamiaceae. It has been cultivated in my country for more than 2,000 years. It is a traditional medicinal and edible plant. It has been developed and utilized in food, medicine, chemical and other industries, especially with perilla seeds as raw materials. Because the prepared perilla oil is rich in α-linolenic acid, which is beneficial to human health, perilla has been planted in large quantities, and the resources are spread over more than 20 provinces in the country. Along with the harvest of perilla, there are also a large number of perilla leaves. In the past, it has been used as a medicinal material for relieving exterior cold, promoting qi and stomach, but in a small amount. There are also people who grow perilla in greenhouses to pick young leaves, wash and dry them at low ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07C403/24
CPCY02P20/54
Inventor 刘大川李江平苏望懿李俊胡小泓尤火松韩江平
Owner WUHAN POLYTECHNIC UNIVERSITY