Extraction technology of perilla frutescens essential oil

A technology of perilla essential oil and extraction process, which is applied to seeds as raw materials, which can solve the problems of affecting purity and quality, low extraction yield, and affecting application, and achieve the effects of fast extraction time, high extraction efficiency, and reduced drug efficacy

Inactive Publication Date: 2012-04-25
JIANGSU NATURAL FOOD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both methods have obvious disadvantages. The oil obtained by the physical method often contains many impurities, is also easy to deteriorate, and the extraction rate is not high; the oil obtained by the chemical method often contains extraction residues, which affects its purity and quality. , also affects its application

Method used

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  • Extraction technology of perilla frutescens essential oil
  • Extraction technology of perilla frutescens essential oil
  • Extraction technology of perilla frutescens essential oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment one: see attached figure 1 , 4 , a kind of extraction process of perilla essential oil, comprises the following steps:

[0028] (1) Clean the broken wall: Put the perilla stem and seeds into the ultrasonic cleaning machine to clean the broken wall, the ultrasonic frequency is 20KHz, and the time is 10min;

[0029] (2) Freeze-drying: After the wall is broken, the raw materials are put into the quick-freezing tunnel to freeze, the freezing temperature is -20°C, and the freezing time is 6 hours; enter the vacuum drying chamber, and when the vacuum degree is 60Pa, start the heating programmer and set the drying curve of the heating programmer : 1. 20°C uniformly rises to 100°C for 45 minutes; 2. 100°C maintains for 360 minutes; 3. 100°C uniformly drops to 65°C for 210 minutes; 4. 65°C uniformly drops to 60°C for 150 minutes; 5. Keep at 60°C for 300 minutes;

[0030] (3) crushing and sieving: the perilla stem and seeds after freeze-drying are pulverized with a...

Embodiment 2

[0032] Embodiment two: see appendix figure 2 , 4 , a kind of extraction process of perilla essential oil, comprises the following steps:

[0033] (1) Clean the broken wall: Put the perilla stem and seeds into the ultrasonic cleaning machine to clean the broken wall, the ultrasonic frequency is 23KHz, and the time is 15min;

[0034] (2) Freeze-drying: After the wall is broken, the raw materials are put into the quick-freezing tunnel to freeze, the freezing temperature is -22°C, and the freezing time is 7h; enter the vacuum drying chamber, and the heating programmer is started at a vacuum degree of 80Pa, and the drying curve of the heating programmer is set. : 1. Rise from 20°C to 80°C evenly for 45 minutes; 2. Keep at 80°C for 450 minutes; 3. Fall from 80°C to 65°C evenly for 150 minutes; 4. Fall from 65°C to 60°C evenly for 150 minutes; 5. Keep at 60°C for 300 minutes;

[0035] (3) Pulverize and sieve: pulverize the perilla stem and seeds after freeze-drying with a unive...

Embodiment 3

[0037] Embodiment three: see attached image 3 , 4 , a kind of extraction process of perilla essential oil, comprises the following steps:

[0038] (1) Clean the broken wall: put the perilla stem and seeds into the ultrasonic cleaning machine to clean the broken wall, the ultrasonic frequency is 25KHz, and the time is 20min;

[0039] (2) Freeze-drying: After the wall is broken, the raw materials are put into the quick-freezing tunnel to freeze, the freezing temperature is -25°C, and the freezing time is 8 hours; enter the vacuum drying chamber, and when the vacuum degree is 100Pa, start the heating programmer and set the drying curve of the heating programmer : 1. Rise from 20°C to 100°C evenly for 45 minutes; 2. Keep at 100°C for 330 minutes; 3. Fall from 100°C to 65°C evenly for 210 minutes; 4. Keep at 65°C for 405m;

[0040] (3) Pulverize and sieve: pulverize the perilla stem and seeds after freeze-drying with a universal pulverizer, and pass through a sieve with a specif...

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Abstract

The invention relates to an extraction technology of a perilla frutescens essential oil. The technology comprises: cleaning, wall breaking, freezing drying, crushing and screening, as well as cycling extraction. The invention adopts ultrasonic wall breaking so as to make the subsequent extraction faster and reduces production cost. Employment of a freezing sublimation drying technology can reserve all the components in plants to the utmost, and the vacuum state avoids the influence of oxidation on drug effect. Meanwhile, essential oil yield is obviously improved. Carbon dioxide is an optimal extracting agent for pure natural substance extraction. As carbon dioxide has low viscosity and high diffusion coefficient, so that the extraction efficiency and the product yield can be high. Carbon dioxide is easily available and inexpensive, and is recyclable during extraction, thus reducing cost. As carbon dioxide is incombustible and non combustion-supporting, production sites have no danger. The invention makes use of the supercritical temperature of carbon dioxide for low temperature extraction so as to exempt biologically active substances from thermal degradation and other undesired auxiliary reactions.

Description

technical field [0001] The invention relates to a process for extracting active ingredients of natural plants, in particular to a process for extracting perilla essential oil from stems, leaves and seeds of perilla plant of Labiatae. Background technique [0002] Perilla is an annual herb belonging to the family Lamiaceae. It is native to the Himalayas and the central and southern regions of China. It is now mainly distributed in India, China, Japan, North Korea and other countries. It has also been commercially cultivated in the United States and Canada in the past two years. . In China, perilla is widely distributed, and is mainly produced in Heilongjiang, Liaoning, Shandong, Sichuan, Hubei, Zhejiang and Anhui provinces, and there are many cultivated varieties now. According to the records of "Flora of China" [1], there are 1 species and 3 varieties of perilla plants. Japanese scholars divide perilla plants into Pa, PK, EK, PL, PP, and C6 types according to the chemical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
Inventor 单艳琴张洪孝
Owner JIANGSU NATURAL FOOD
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