Supecritical CO2 extraction process for cumin essential oilall
In this study, cumin essential oil was extracted and purified by supercritical co2 fluid extraction combined with molecular distillation to ensure the natural characteristics of the product to the greatest extent.we’re trying to solve here?
What is cumin essential oil?
Cumin, also known as Cuminum cyminum L., is an annual herb of Cuminum L., which belongs to Umbelliferae. Its flavor substance mainly exists in the volatile oil of fruit.
Cumin seeds contain 2% – 5% volatile oil, mainly terpenes, aromatic aldehydes, ketones and ethers. Cumin aldehyde, one of its main components, has many physiological functions.
Molecular distillation (MD) is a new high-tech used in liquid-liquid separation.
According to the difference of average free path of molecular movement, MD can separate the mixed components. Because MD is a pure physical method and it is carried out under high vacuum, and the separation temperature is very low, it is especially suitable for separation of high volatility, high relative molecular weight, high boiling point, high viscosity and thermal sensitivity.
For example, octacosanol is extracted from rice bran, fatty acids and VE are extracted from grape seed oil, and VE is extracted from rape seed oil. Molecular distillation has carried out a wide range of research on spices, such as the purification of patchouli oil, Litsea cubeba oil, star anise oil, garlic oil, pepper essential oil and so on.
Experimental conclusion on Extraction of cumin Oleoresin by supercritical co2 extraction
The essential oil of cumin was extracted and purified by supercritical combined molecular distillation.
The volatile components of cumin essential oil were qualitatively analyzed by GC-MS and double column retest.
44 components were identified on DB-5 column and 39 components were identified on inno-wax column, 20 of which existed on both columns. A method for the simultaneous determination of the main aromatic compounds (β – pinene, paracymene, γ – Terpinene, cumin aldehyde) in cumin oil by capillary gas chromatography with n-dodecane as internal standard was established.
The results showed that there was a good linear relationship between the peak area of four aromatic substances and their mass concentration under the selected chromatographic conditions, and R2 was greater than 0.9996. After molecular distillation and purification, the content of cumin aldehyde, the main component of cumin essential oil, increased from 11.48% to 30.30% before purification.