Journal
JOURNAL OF SUPERCRITICAL FLUIDS
Volume 88, Issue -, Pages 134-141Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.supflu.2014.02.001
Keywords
Antifungal Activity; Antibacterial activity; Cyperus articulates; Mathematical modeling; Supercritical extraction
Categories
Funding
- FAPESPA (FUNDACAO DE APOIO A PESQUISA DO ESTADO DO PARA/BRASIL)
- CNPq
- CAPES (NANOBIOTEC)
Ask authors/readers for more resources
The main goal of this study was to assess the yield and the antimicrobial activity of extracts from Cyperus articulatus L. var. articulatus obtained by pressurized carbon dioxide based on their system phase diagram behavior. The extractions were carried out at 313, 323, 333 K temperatures and, 13 and 25 MPa pressures. The extracts were quantified and chemically characterized by using gas chromatography coupled to mass spectrometry technique. The extracts obtained at the following experimental conditions: 333 K and 13 MPa, showed antifungal activity against Cladosporium sphaerospermum ATCC 4464. At 323 K -25 MPa, and 333 K -25 MPa, the extracts showed antibacterial activity against Staphylococcus aureus ATCC 25923. To describe the kinetics of extraction with a packed bed, a mathematical model was employed highlighting the transference mechanisms for masses in the pseudo-binary system as follows (1) carbon dioxide and (2) priprioca extract, the monophasic and multiphasic regions. (C) 2014 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available