Influence of Supercritical CO2 Extraction on Fatty Acids Profile, Volatile Compounds and Bioactivities from Rosmarinus officinalis

Rosemary oil was extracted by supercritical carbon dioxide (CO 2 ) as a solvent. The parameters of pressure, temperature, and ethanol as co-solvent were evaluated through a Taguchi experimental design. Extraction yield of rosemary oil increased with high pressure (350 bar) and mid-range temperature...

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Bibliographic Details
Published in:Waste and biomass valorization 2020-04, Vol.11 (4), p.1527-1537
Main Authors: García-Pérez, J. Saúl, Cuéllar-Bermúdez, Sara Paulina, Arévalo-Gallegos, Alejandra, Salinas-Salazar, Carmen, Rodríguez-Rodríguez, José, de la Cruz-Quiroz, Reynaldo, Iqbal, Hafiz M. N., Parra-Saldívar, Roberto
Format: Article
Language:English
Subjects:
Antimicrobial activity
Antioxidants
Borneol
Camphor
Carbon dioxide
Caryophyllene
Cineole
Design of experiments
E coli
Engineering
Environment
Environmental Engineering/Biotechnology
Ethanol
Experimental design
Fatty acids
High pressure
Industrial Pollution Prevention
Oil
Original Paper
Pressure
Pseudomonas aeruginosa
Renewable and Green Energy
Solvents
Stearic acid
Supercritical gas extraction
Temperature
Vegetable oils
Volatile compounds
Waste Management/Waste Technology
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Summary:Rosemary oil was extracted by supercritical carbon dioxide (CO 2 ) as a solvent. The parameters of pressure, temperature, and ethanol as co-solvent were evaluated through a Taguchi experimental design. Extraction yield of rosemary oil increased with high pressure (350 bar) and mid-range temperature (40 °C), while the addition of ethanol as co-solvent did not improve the extraction yield. Palmitic, α-linolenic, linoleic, oleic, and stearic acid were the main fatty acids detected (3.96% w/w) in the extracted oil. The major volatile compounds found in the oil (75.74% w/w) included d-camphor, eicosane, 1,8-cineole, tetracosane, borneol, and β-caryophyllene. The extracted oils showed antimicrobial activity against Staphylococcus aureus, Pseudomonas aeruginosa , and Candida albicans , while Escherichia coli was less sensitive to inhibition. Antioxidant activities on DPPH and TEAC assays were higher at 60 °C, 100 bar without ethanol, while antioxidant activity on FRAP assay was improved at 40 °C, 100 bar, and ethanol as co-solvent. Operational conditions used in the present extraction process (a variation in temperature, pressure, and co-solvent) are described. Graphical Abstract
ISSN:1877-2641
1877-265X
DOI:10.1007/s12649-018-0408-5