Supercritical antisolvent particle precipitation and fractionation of rosemary (Rosmarinus officinalis L.) extracts
Entity
UAM. Departamento de Química Física AplicadaPublisher
Elsevier BVDate
2019-12-01Citation
10.1016/j.jcou.2019.07.032
Journal of CO2 Utilization 2019.34 (2019): 479-489
ISSN
2212-9820DOI
10.1016/j.jcou.2019.07.032Funded by
The authors gratefully acknowledge the financial support from Ministerio de Economía y Competitividad of Spain (Proyect AGL2016- 76736-C3-1-R). Somaris E. Quintana is grateful for the funding provided by Gobernación de Bolivar and Fundación Ceiba, Colombia, in the project “Bolívar Gana con CienciaProject
Gobierno de España. AGL2016- 76736-C3-1-REditor's Version
https://doi.org/10.1016/j.jcou.2019.07.032Subjects
Abbreviations MCP mixture critical point; PSD particle size distribution; RE rosemary ethanolic extract; SAS supercritical antisolvent precipitation process; SCCO supercritical carbon dioxide 2; SEM scanning electron microscopy; TEAC trolox equivalent; TPC total phenolic compounds; Biología y Biomedicina / BiologíaRights
© 2019 The AuthorsAbstract
The simultaneous fractionation and precipitation of an ethanolic extract of rosemary (Rosmarinus officinalis L.) using supercritical carbon dioxide anti-solvent technique was studied, with the target of separate in two different fractions the key antioxidants of rosemary (i.e. rosmarinic acid, carnosic acid and carnosol). The effect of pressure and temperature on the fractionation process was investigated, together with the morphology and particle size distribution of the precipitates. Additionally, the chemical composition of the oleoresins were analyzed and reported. In the range of pressures (9-20 MPa) and temperatures (313-333 K) used in this work, the precipitates presented a 2-3 fold enrichment of rosmarinic acid, while carnosic acid and carnosol were concentrated (2-3 fold enrichment) in the oleoresin fractions. Furthermore, in general, oleoresins presented higher antioxidant activity than precipitates. Particles produced with a nozzle of diameter 101.6 μm were smaller and more spherical with increasing pressure (mean value 4-10 μm at 20 MPa) and decreasing temperature
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Google Scholar:Quintana, Somaris E.
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Villanueva-Bermejo, David
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Reglero Rada, Guillermo J.
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Rodríguez García-Risco, Mónica
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Fornari Reale, Tiziana
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