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Preparation method for rose absolute oil

A technology of rose purification and rose, applied in the direction of essential oils/spices, fat generation, etc., can solve the problems of turbid color, great loss of rose oil aroma, uneven heating, etc., and achieves low moisture and wax content, natural and pure fragrance. protective effect

Active Publication Date: 2014-11-12
无锡悦禧玫瑰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Indigenous equipment extraction method is to put rose flowers into the essential oil extraction tank, add tap water 3 to 4 times the weight of rose flowers, cover the material inlet cover, screw the seal tightly and heat the lower part of the extraction tank directly, without stirring device, Uneven heating causes a great loss of rose oil aroma, accompanied by an unpleasant smell, and there are many impurities in the oil, the color is cloudy, easy to oxidize and change taste, and the characteristic aroma of rose oil is lost

Method used

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  • Preparation method for rose absolute oil
  • Preparation method for rose absolute oil

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Embodiment 1

[0021] A preparation method of rose absolute, comprising the following steps:

[0022] (1) Extraction: extract fresh rose petals with a mixed solvent of n-hexane:dichloromethane volume ratio 1:1, fresh rose petals and non-polar organic solvent volume-to-mass ratio is 1:6, cyclic extraction 3 times, 4 hours for the first extraction, 2.5 hours each for the last two extractions, extraction temperature 40°C;

[0023] (2), concentrating under reduced pressure: merge three extracts, filter, the filtrate is concentrated under reduced pressure, vacuum degree-0.09Mpa, obtain rose extract;

[0024] (3), the rose extract is dissolved in absolute ethanol, the mass volume ratio of rose extract and absolute ethanol is 1:6, immersed at 20°C for 8 hours, and the insoluble raw wax is filtered off to obtain the rose dissolved filtrate, Continue to freeze at -10°C for 15 hours;

[0025] (4), the frozen rose dissolving filtrate is subjected to high-speed centrifugation, the rotating speed is 10...

Embodiment 2

[0029] A preparation method of rose absolute, comprising the following steps:

[0030] (1) Extraction: extract fresh rose petals with a mixed solvent of n-pentane:dichlorodifluoroethane with a volume ratio of 1:1, and the volume-to-mass ratio of fresh rose petals to non-polar organic solvents is 1:8 , 3 times of circulating extraction, 4 hours for the first extraction, 2.5 hours each for the last two extractions, extraction temperature 50°C;

[0031] (2), concentrating under reduced pressure: combine three extracts, filter, and the filtrate is concentrated under reduced pressure, vacuum degree-0.1Mpa, to obtain rose extract;

[0032] (3), the rose extract is dissolved in absolute ethanol, the mass volume ratio of rose extract and absolute ethanol is 1:8, immersed at 25°C for 8 hours, the insoluble raw wax is filtered off, and the rose dissolved filtrate is obtained. Continue to freeze at -15°C for 15 hours;

[0033] (4), the frozen rose dissolving filtrate is subjected to hi...

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Abstract

The invention discloses a preparation method for rose absolute oil. The preparation method comprises the following steps of: extracting: leaching fresh rose petals by virtue of a non-polar organic solvent; combining extracting liquor, filtering, and concentrating filtrate under reduced pressure to obtain rose extract; dissolving the rose extract in absolute ethyl alcohol or 95% alcohol, filtering to remove insoluble raw wax to obtain rose-dissolved filtrate, and continuously freezing for 15-20 hours; centrifuging the frozen rose-dissolved filtrate at a high speed, so that the wax is deposited to obtain rose wax and rose liquid supernatant; concentrating the wax-removed rose liquid supernatant in vacuum to obtain the rose absolute oil. According to the preparation method disclosed by the invention, a molecular distillation step is omitted by virtue of secondary wax removal, so that the prepared rose absolute oil is clear and transparent, and low in moisture and wax content, and thus, defects that the conventional rose oil is relatively sharp in aroma, more in aroma component loss, incomplete in aroma characteristics, relatively great in variation between the aroma and the aroma of fresh flowers, and easy to oxidize and deteriorate are overcome.

Description

technical field [0001] The invention belongs to the field of plant extraction and relates to a preparation method of rose absolute. Background technique [0002] Rose belongs to Rosaceae plants, deciduous erect shrubs, native to northern my country, and now cultivated all over the country. Roses not only have a strong aroma and bright color, but also are rich in pigments, sugars, proteins and trace elements, and have good antioxidant capacity. They are called gentleman medicine in Chinese pharmacy. Chinese medicine believes that roses are sweet and slightly bitter, warm in nature, non-toxic, and enter the liver and spleen meridians. Roses can not only be used as medicine, but also as food. Flowers can be used as rose wine and rose sauce, petals can be used as candy, cakes, honey money, spices, dried flowers can be made into tea, and rose essential oil is a precious spice. Edible roses can clear away heat and quench thirst, regulate qi and activate blood, and nourish qi an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
Inventor 王文敦
Owner 无锡悦禧玫瑰科技有限公司
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