Preparation method of rosemary extract

A rosemary extract and extract technology, applied in the field of preparation of plant extracts, can solve the problems of difficult industrialization, waste of rosemary resources, complicated preparation process, etc., achieve low equipment requirements, improve utilization rate, and simple operation Effect

Active Publication Date: 2017-12-26
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the research on the extraction and separation of carnosol, carnosic acid and ursolic acid in rosemary branches and leaves is mainly to extract and separate carnosol and/or carnosic acid of diterpenes, or to extract them separately...

Method used

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  • Preparation method of rosemary extract
  • Preparation method of rosemary extract
  • Preparation method of rosemary extract

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preparation example Construction

[0035] A preparation method of rosemary extract, may comprise the steps:

[0036] 100. Pretreating rosemary branches and leaves, the pretreatment includes extracting rosemary essential oil and water-soluble components.

[0037] 101. Taking rosemary branches and leaves as raw materials, simultaneously extracting carnosol, carnosic acid and ursolic acid to obtain extract Ⅰ;

[0038] 102. Concentrate the extract I to obtain a concentrate; wherein, the volume of the concentrate is concentrated to 1 / 4-3 / 4 of the extract I.

[0039] 103. Add water to the concentrated solution for dilution to obtain a suspension; wherein the volume of the water is 1-5 times the volume of the concentrated solution.

[0040] 104. The suspension is treated with an alkali-dissolving process to obtain extract II and extract I containing ursolic acid; wherein the alkali-dissolving process includes: adding the suspension to the suspension at a volume ratio of 20:1-10 : 1 Add an alkali-water solution with ...

Embodiment 1

[0049] Pretreatment of raw materials: (step 200)

[0050] Weigh 2.5kg of rosemary branches and leaves, place them in an essential oil extractor, add 50L of water, heat to boiling state, extract the essential oil and water-soluble components in rosemary branches and leaves by steam distillation, until the amount of distilled essential oil When there is no change, the heating is stopped, the rosemary essential oil and the extract containing rosemary water-soluble components are collected respectively, and the remaining solid residue is dried and pulverized to obtain the pretreated raw material.

[0051] Simultaneous extraction of carnosol, carnosic acid and ursolic acid: (step 201)

[0052] Weigh 1kg of the above-mentioned pretreated raw material, put it in a 50L extraction tank, add 6L of ethanol-water solution with a volume fraction of ethanol of 80% according to the ratio of solid to liquid 1:6 (kg / L), stir, and put it at 80°C Extract at constant temperature for 90 minutes, ...

Embodiment 2

[0080] Pretreatment of raw materials: (step 300)

[0081] Weigh 2.5kg of rosemary branches and leaves, place them in an essential oil extractor, add 50L of water, heat to boiling state, extract the essential oil and water-soluble components in rosemary branches and leaves by steam distillation, until the amount of distilled essential oil When there is no change, the heating is stopped, the rosemary essential oil and the extract containing rosemary water-soluble components are collected respectively, and the remaining solid residue is dried and pulverized to obtain the pretreated raw material.

[0082] Simultaneous extraction of carnosol, carnosic acid and ursolic acid: (step 301)

[0083] Weigh 1kg of the above-mentioned pretreated raw material, put it in a 50L extraction tank, add 12L of ethanol-water solution with a volume fraction of ethanol of 60% according to the solid-liquid ratio of 1:12 (kg / L), stir, and put it at 90°C Extract at a constant temperature for 150 minutes...

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Abstract

The invention discloses a preparation method of a rosemary extract. The method comprises the steps of S1, taking rosemary branches and leaves as raw materials and extracting carnosol, carnosic acid and ursolic acid at the same time to obtain an extracting solution I; S2, concentrating the extracting solution I to obtain a concentrated solution; S3, adding water into the concentrated solution for dilution to obtain turbid liquid; S4, treating the turbid liquid by an alkali dissolution process to obtain an extracting solution II and an extract I containing the ursolic acid; S5, treating the extracting solution II by adopting an acid sediment process to obtain an extract II containing the carnosol and the carnosic acid, thus realizing the synchronous extraction and separation of the extract containing the carnosol and the carnosic acid and the extract containing the ursolic acid.

Description

technical field [0001] The invention relates to a preparation method of a plant extract, in particular to a preparation method of a rosemary extract. Background technique [0002] Rosemary (Rosemary), Latin name Rosmarinus officinalis L., Lamiaceae Rosemary plant. Rosemary is planted in large areas in Hunan, Yunnan, Hainan, Henan, Guangxi, Guizhou, Xinjiang, Zhejiang and other provinces. The largest rosemary planting base in China is located in Yuzhou City, Henan Province. In 2012, its standardized planting base and nursery base reached 20,000 mu and 200 mu respectively. The planned planting area of ​​the base is 100,000 mu. As far as Hunan Province is concerned, Yueyang, Changsha, Changde, Hengyang, Huaihua, Xiangxi Autonomous Prefecture and other places have successively established rosemary planting bases, with a total planting area of ​​more than 5,000 mu and an annual output of more than 4,000 tons of fresh rosemary leaves. If this trend continues, my country's rosema...

Claims

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Application Information

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IPC IPC(8): C07J63/00C07C51/42C07C51/47C07C51/43C07C51/44C07C62/32C07D311/00
CPCC07C51/42C07C51/43C07C51/445C07C51/47C07D311/00C07J63/008C07C62/32
Inventor 杨国恩张磊毕志成李超凡
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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