Geraniaceae (Geraniaceae) is a perennial subshrub of Pelargonium, native to South Africa, mainly in Reunion Island, Morocco, Algeria, France, Egypt and other countries. my country’s fragrant leaves are mainly produced in Yunnan, and are currently mainly distributed in western and central Yunnan. There are also a small amount of cultivation in other provinces and cities. Geranium Maculatum Oil (geranium oil) with rose aroma obtained by steam distillation of its stems and leaves is a kind of natural spice with a large amount, which is widely used in perfume, soap, cosmetics and food. It is one of the main export products of spice in my country.
In addition, Geranium Maculatum Oil has a wide range of antiviral, bacterial and fungal effects, scavenging free radicals (antioxidants), and inhibiting the growth of various tumor cells. With the further understanding of the spice and medicinal value of the bay leaf, the application prospect of bay leaf will be broader. For example, in India, Japan and other countries, the Institute of Medicinal and Aromatic Plants has incorporated the tissue culture and rapid propagation technology of bay leaf into the Key projects.
At present, the method of extracting Geranium Maculatum Oil (geranium oil) is commonly used steam distillation method, and supercritical CO2 fluid extraction method is also used, but it is rare. The extraction temperature of steam distillation method is high, and it is easy to volatilize the components with lower boiling points, and the yield of extracted volatile oil is low, generally 0.5% to 1.5%. In recent years, supercritical CO2 extraction technology has developed rapidly, and the obtained plant essential oil is safe, clean, and has high extraction efficiency, but the equipment operating cost is high. The supercritical CO2 extraction Geranium Maculatum Oil (geranium oil), the yield is generally 2% ~ 3%. %.