System analysis and safety of the process to obtain CO2- extracts from plants

• Published in: IOP conference series. Earth and environmental science 2021-02, Vol.640 (4)
• Main Authors: Aleshkevich, Y S, Barbashov, A V, Zaporozhskii, A A, Zolotokopova, S V, Kasyanov, G I, Silinskaya, S M
• Format: Article
• Language: English
• Subjects: Aquatic plants; Carbon dioxide; Evaporators; Ginger; Modernization; Plant extracts; Raw materials; Rhizomes; Safety; Seeds; Systems analysis; Vacuum pumps; Vapor pressure
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/640/4/042018

Systematization and analysis experience in the field of value extraction from plant material using liquid carbon dioxide is allowed modernizing the extraction unit to include additional operations. The results of studies performed by the extraction unit are also scheme modernization comprising the steps of removing air from the raw material by using a vacuum pump and organization low-frequency pulsating extraction mode by using a special apparatus-pulsator. The sequence of technological processes to extract extractives from various plant materials were tested. The safety of the extraction unit operated under the saturated vapour pressure of carbon dioxide to 7.0 MPa was discussed. The studies of system analysis methods for preparing highly concentrated extracts with liquid carbon dioxide was performed in an improved extraction system. The object of research was olive and spicy raw materials, with different contents of extractives: apricot, clove buds, ginger rhizome, the fruit of coriander and cumin seeds. The liquid carbon dioxide that exhibits high extraction properties of +10 ° C to +25 °C temperature range and pressure from 4499 kPa to 6436 kPa was selected as the solvent. The calculation of the evaporator, which is one of the primary devices for the extraction unit, was done.