Method for extracting rose essential oil from rose dregs

A technology of rose residue and rose essential oil, which is applied in the direction of essential oil/fragrance, fat production, etc., to achieve the effect of improving economic benefits

Inactive Publication Date: 2010-10-06
平阴县玫瑰研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Extraction of rose oil by steam distillation is currently the most widely used rose oil production technology, but the oil yield is only 3/10,000. Pingyin County produces 500 kg of rose oil by steam ...

Method used

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Examples

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Embodiment 1

[0034] Embodiment 1, a kind of method extracting rose essential oil from rose pomace, mainly comprises the following steps:

[0035] 1. Dehydration: Dehydrate the fresh rose residue with a centrifugal dehydrator;

[0036] 2. Extraction Weigh 5kg of stored rose dregs into a 75L stainless steel container, add 4 times the solvent (volume ratio), stir once every half an hour, extract for more than 2 hours, then filter, and the filtrate is used for concentration. Add 4 times more solvent for the second extraction, pour the second extract into another plastic bucket containing 5Kg roses, add 4 times more solvent to the flower residue, and extract four times in this way. The flower residue after four extractions was discarded after recovering the solvent.

[0037] 3. Filtration Use coarse filter paper to filter the first extract, and the filtrate is used for concentration.

[0038] 4. Atmospheric pressure concentration Put the filtrate into the distillation tank to heat, recover th...

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PUM

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Abstract

The invention discloses a method for extracting rose essential oil from rose dregs and belongs to an extract method of essential oil, in particular relates to a method for extracting rose essential oil by using the organic solvent extraction and molecular distillation technology. The method comprises the following steps of: firstly, soaking and extracting the rose dregs by using petroleum ether and methylene dichloride as the mixed solvent; secondly, filtering the solution, condensing the filtrate, adding absolute ethyl alcohol, freezing and filtering the filtrate, removing the vegetable wax, condensing the filtrate to get the condensed solution; and thirdly, removing the residual solvent, vegetable wax, pigment and the like by a molecular distillation device to finally obtain the rose essential oil. The invention provides a new technology for the sufficient utilization of the rose and the improvement of the economic benefit of the rose processing enterprises.

Description

technical field [0001] The invention belongs to a method for extracting spice oil, in particular to a method for extracting rose essential oil by using organic solvent extraction and molecular distillation techniques. Background technique [0002] Pingyin County, Shandong Province is the hometown of roses in China. The rose planting area has reached more than 30,000 mu, and the quality of rose oil ranks first in China. Extraction of rose oil by steam distillation is currently the most widely used rose oil production technology, but the oil yield is only 3 / 10,000. Pingyin County produces 500 kg of rose oil by steam distillation every year and produces 1,700 tons of rose waste. The waste residue is currently used only as fertilizer or fuel. There is no report of using rose residue to extract essential oil at home and abroad. Contents of the invention [0003] The purpose of the present invention is to make full use of the steam distillation method to extract the remaining ...

Claims

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Application Information

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IPC IPC(8): C11B9/02
Inventor 郭永来
Owner 平阴县玫瑰研究所
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