Extraction and preparation method of rose essential oil

Abstract

The invention relates to the technical field of extraction of essential oil, in particular to an extraction and preparation method of rose essential oil. The extraction and preparation method comprises the following steps: S1, cleaning for impurity removal; S2, drying in the shade: flatly spreading cleaned rose on a flat plate, and drying in the shade in an indoor environment; S3, crushing: crushing the rose obtained in the previous step by using a crushing machine; S4, distilling: adding the rose crushed in the previous step into a distilling pot, adding deionized water, and then distilling to obtain an oil-water mixture; S5, separating: separating oil from water, extracting an oil layer to obtain a crude extract containing a small amount of water; and S6, purifying: dewatering, and thenfiltering to obtain the rose essential oil. By the extraction and preparation method, convenient extraction of the rose essential oil can be achieved, an extraction process is easy to implement, the extracted rose essential oil has high purity and does not contain a harmful substance, and beneficial components of the rose essential oil can be greatly retained; the extraction and preparation methodis suitable for large-scale production.

Description

technical field [0001] The invention relates to the technical field of essential oil extraction, in particular to a method for extracting and preparing rose essential oil. Background technique [0002] Rose, Rosaceae Rosa is a deciduous shrub with beautiful flowers, color, fragrance and shape, and has extremely high economic value. Known as the "Golden Flower". Rose essential oil is the crown of flower oils, with elegant, soft, delicate, sweet and honey-like fragrance of roses. The fragrance is very strong, and two drops can be made into 1L of good perfume. It is expensive and has the reputation of "liquid gold". The extraction method of existing rose essential oil mainly contains: [0003] 1. Fat adsorption method, which uses oil to absorb the essential oil in roses. Although the process is simple, it is more difficult to separate the essential oil and oil in the follow-up. [0004] 2. Extraction method, using low boiling point solvents such as sherwood oil, hexane and ...

AI Technical Summary

Problems solved by technology

[0003] 1. Fat adsorption method, which uses oil to absorb essential oil in roses. Although the process is simple, it is more difficult to separate essential oil and oil in the follow-up

[0004] 2. Extraction method, using low boiling point solvents such as sherwood oil, hexane and other organic solvents to soak roses, extract the mixture of essential oils and organic solvents, and then distill off the organic solvents to obtain rose essential oils; this method has a high extraction rate of essential oils and low cost. Low, but it is easy to cause organic solvent residues, making the aroma of rose essential oil not pure enough

[0005] 3. Supercritical extraction method, using supercritical carbon dioxide fluid to immerse and extract rose essential oil; this method has the advantages of high yield and high product quality; but because supercritical carbon dioxide fluid is too soluble, non-essential oil components in roses are also It is extracted, and the water in the rose is not easy to separate, which makes the rose essential oil prone to mildew during storage, which limits the application range of the obtained product