A kind of extraction method of rose essential oil

Abstract

The invention discloses a method for extracting rose essential oil, and belongs to the technical field of chemical industry. The method for extracting the rose essential oil disclosed by the invention comprises the following steps: feeding rose flowers and water to a distillation kettle to distill; cooling a slipped matter in the distillation kettle, so as to obtain effluent; intruding the cooled effluent to an oil-water separator to carry out oil-water separation, wherein the oil-water separation comprises two stages; finishing the first stage until 1-1.5 hours after the liquid inside the distillation kettle boils, wherein the oil-water separation temperature is 26-30 DEG C, collecting an oil layer separated by the oil-water separator, so as to obtain hair sesame oil, wherein the second stage is from the end of the first stage to the end of the overall distillation process, and the oil-water separation temperature is 30-40 DEG C, collecting the oil layer separated by the oil-water separator, so as to obtain the common rose essential oil. By adopting the method for extracting the rose essential oil disclosed by the invention, the gross of the rose essential oil and the gross of the hair essential oil are high in extraction rate, and the essential oil is good in quality.

Description

technical field [0001] The invention relates to a method for extracting essential oil, in particular to a method for extracting rose essential oil, and belongs to the technical field of chemical industry. Background technique [0002] Rose essential oil is the king of flower essential oils, which is extracted from rose flowers. Rose essential oil is expensive and has the reputation of "liquid gold". It is a world-renowned high-grade concentrated essence, a boutique in essential oils, and an important and expensive raw material for making high-end and precious perfumes. It is not only used to make beauty, skin care, hair care and other cosmetics, but also widely used in medicine and food. After the natural aroma of rose essential oil enters the brain through the olfactory nerve, it can stimulate the front lobe of the brain to secrete two hormones, endorphin and enkephalin, and make the spirit present the most comfortable state, which is the best way to protect the soul; rose...

AI Technical Summary

Problems solved by technology

[0004] In the extraction method of the above-mentioned rose essential oil, the rose water is boiled for half an hour and the "top balm" is collected. The main components in the "top balm", such as nerol, geraniol and citronellol, still exist in large quantities in the rose water without volatilization. , the total yield of "top sesame oil" is low; in particular, the content of nerol in the collected "top sesame oil" is the least, and the quality of "top sesame oil" is poor

[0005] Further, when the oil-water separation temperature is 20-25°C, the solubility of nonadecane and unicacane in rose essential oil in the water layer is small, and the content of nonadecane and unicacane in "top scent oil" is high, The quality of "top balm" is poor. At the same time, when the oil-water separation temperature is 20-25°C, the main components of "top balm" are neroliol, geraniol, and citronellol. The separation effect of the layers is poor, and the extraction rate of "top sesame oil" is low

[0006] Simultaneously, rose essential oil citronellol, geraniol stability are poor, and the time of above-mentioned method extracting rose essential oil is long, reaches 6~8 hours, and citronellol, geraniol and nerol are distilled for a long time, and reflux all easily produces chemical reaction, For example, citronellol is easily dehydrogenated to citronellal, geraniol and nerol are easily hydrogenated to form alkanes, and the rose essential oil collected at the end has a low yield and poor quality

Images