Preface
Rose essential oil contains a large amount of compounds such as citronellol, geraniol and nerolidol.
It has long been one of the popular floral essential oils in the international food industry market, mainly used in beverages, candy, ice cream, condiments, and health food.
Supercritical Carbon Dioxide Extraction of Rose Essential OilSupercritical Carbon Dioxide Extraction of Rose Essential Oil
Supercritical carbon dioxide extraction of rose essential oil Supercritical carbon dioxide extraction of rose essential oil
It can be used in the chemical industry to produce high quality perfumes and high quality cosmetics. The market is expensive and the demand is huge; however, the existing technology for the extraction of rose essential oil is low in efficiency, complex in process and pollutes the environment. There is an urgent need to develop a new extraction process of rose essential oil to transform rose into a new direction of value-added development.
Supercritical CO2 extraction of rose essential oil
Rose is a plant of the genus Rosaceae in the family Rosaceae. It is an erect deciduous shrub. The flowers have a sweet fragrance.
Rose essential oil supercritical CO2 extraction machine
Rose essential oil supercritical CO2 extraction machine
Extracting rose essential oil from rose is one of the oldest essential oils. Rose has the function of regulating qi, invigorating blood, nourishing and astringent, which can treat menstrual disorders, bruises, liver and stomach pains.
It’s easy! Supercritical CO2 extraction can be done in just six steps.
Supercritical extraction combined with molecular distillation not only has low operating temperature and short heating time, but also can avoid the oxidation and rancidity of oil caused by high temperature, with high separation and product yield.
Molecular distillation can also reduce the acid value of rose oil without centrifugation, which reduces the cost.
Fresh roses are removed from impurities, put into vacuum freeze drying equipment for 20-30 hours and then removed, put into crushing equipment, crushed and sieved to make 50-60 mesh crushed rose material and set aside.
The pressure in the extractor is set to 20 MPa and the temperature is set to 40°C. The mixture of extracted CO2 and rose essential oil is fed into the separator for decompression. The pressure in the separator is 6 MPa and the temperature is 37°C.
Supercritical CO2 extraction of rose oil Supercritical CO2 extraction of rose oil
Supercritical carbon dioxide extraction of rose oilSupercritical carbon dioxide extraction of rose oil
Supercritical carbon dioxide extraction of rose oilSupercritical carbon dioxide extraction of rose oil
Supercritical carbon dioxide extraction rose oilSupercritical carbon dioxide extraction rose oil
After the CO2 is liquefied by the liquefier, it is directly returned to the storage tank at 26°C for the next round of extraction and separation cycle. Each round of extraction and separation time is 1.5 hours. After separation, primary rose oil is prepared and set aside.
Molecular distillation
Adding primary rose oil to the molecular distiller with the vacuum set at 1.0-2.0 Pa and the temperature at 60-80 °C in the molecular distiller and the rotating brush speed at 120 r/min in the molecular distiller until the primary rose oil is completely collected by the heavy phase collection tank and the light phase collection tank, and the rose phase crude oil is collected in the heavy phase collection tank for use.
Add rose oil to the molecular distiller again, set the vacuum in the molecular distiller to 1.0-2.0 Pa and the temperature to 60-80°C, and set the rotating brush speed in the molecular distiller to 120 r/min until the rose oil is completely collected by the heavy phase collection tank and the light phase collection tank, and the rose oil is collected in the heavy phase collection tank.
Process parameters
Extraction pressure: 20 MPa
Extraction temperature: 40°C
Extraction time: 90 min
Separation kettle â… pressure: 6 MPa
Separation kettle â… temperature: 37°C
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