Results 31 to 40 of about 14,090 (234)

Could Supercritical Extracts from the Aerial Parts of Helianthus salicifolius A. Dietr. and Helianthus tuberosus L. Be Regarded as Potential Raw Materials for Biocidal Purposes?

Agriculture, 2020
Extracts from the June collection of aerial parts of Helianthus salicifolius A. Dietr and Helianthus tuberosus L. were obtained using carbon dioxide supercritical fluid extraction with water as co-solvent.
Anna Malm, Agnieszka Grzegorczyk, Anna Biernasiuk, Tomasz Baj, Edward Rój, Katarzyna Tyśkiewicz, Agnieszka Dębczak, Mariusz Jerzy Stolarski, Michał Krzyżaniak, Ewelina Olba-Zięty   +9 more
doaj   +1 more source

Influence of supercritical fluid extraction on lignocellulosic plant matrix and extractive substance yield

Acta Biologica Sibirica, 2022
Natural substances of plant origin are widely used in pharmacies. However, the quantitative content of biologically active substances in plant cells is insignificant and the currently available extraction methods do not allow for the complete extraction ...
Alexandra V. Zakharchenko, Natalya G. Bazarnova   +1 more
doaj   +1 more source

Characterization of grape seed oil extracted by supercritical carbon dioxide

Grasas y Aceites, 1995
In this work the quality of grape seed oil obtained by extraction with supercritical carbon dioxide was studied. At the optimun operating conditions (313 K and 25 MPa), the yield of supercritical extraction is similar to the conventional extraction by ...
A. Molero Gómez, C. Pereyra López, E. Martínez de la Ossa   +2 more
doaj   +1 more source

Subcritical liquified dimethyl ether and supercritical fluid carbon dioxide extraction of gamma oryzanol from rice bran acid oil

Journal of Agriculture and Food Research, 2023
Gamma oryzanol (γ-oryzanol) is a bioactive compound in rice bran acid oil, a by-product of the rice bran oil refining process that possesses various pharmacological properties.
Sudthida Kamchonemenukool, Donporn Wongwaiwech, Tipawan Thongsook, Monthana Weerawatanakorn   +3 more
doaj   +1 more source

Sub and Supercritical Decontamination of Oil-Based Drill Cuttings: A Review [PDF]

Environmental Energy and Economic Research, 2019
Drill mud is a fluid which is used in oil extraction industries in order to cool and lubricate the drill bit. Due to containing numerous toxic components, it is considered as a hazardous waste which must be treated before discharging to the environment ...
Shahriar Motamedimehr, Saeid Gitipour
doaj   +1 more source

Features and Advantages of Supercritical CO₂ Extraction of Sea Cucumber Cucumaria frondosa japonica Semper, 1868

Molecules, 2020
Extraction process of Cucumaria frondosa japonica Semper, 1868, which are subspecies of Cucumaria frondosa (Gunnerus, 1767), were studied. It was shown that supercritical carbon dioxide extraction of holothuria was more effective than conventional ...
Alexander Zakharenko, Denis Romanchenko, Pham Duc Thinh, Konstantin Pikula, Cao Thi Thuy Hang, Wenpeng Yuan, Xuekui Xia, Vladimir Chaika, Valery Chernyshev, Svetlana Zakharenko, Mayya Razgonova, Gyuhwa Chung, Kirill Golokhvast   +12 more
doaj   +1 more source

Supercritical fluids in separation and purification: A review

Materials Science for Energy Technologies, 2019
The properties of the supercritical fluid near the critical point can be changed by varying the pressure and temperature, allowing selective and faster extraction.
Sampatrao D. Manjare, Kabir Dhingra
doaj   +1 more source

Optimization of Antifungal Properties of Hop Cone Carbon Dioxide Extracts Based on Response Surface Methodology

Molecules
Response surface methodology (RSM) was employed to optimize the process parameters of the supercritical carbon dioxide extraction of hop cones in terms of their antifungal properties against Fusarium culmorum and Aspergillus niger.
Katarzyna Tyśkiewicz, Renata Tyśkiewicz, Marcin Konkol, Marcin Gruba, Rafał Kowalski   +4 more
doaj   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

Advanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies, Marcos Eduardo G. Carmo, Gonçalves J. Marrenjo, Stephan Reuther, Patrick Ganswindt, Antonio Otavio T. Patrocinio, Thomas Bein, Osmando F. Lopes, Jenny Schneider   +8 more
wiley   +1 more source

Effects of Supercritical Carbon Dioxide Extraction (SC-CO2) on the content of tiliroside in the extracts from Tilia L. flowers

Open Chemistry, 2019
Tiliroside is one of the main flavonoid compounds responsible for a wide spectrum of biological activity of Tilia L. Up to now, several extraction techniques have been reported for extracting this compound from Tilia L.
Pieczykolan Aleksandra, Pietrzak Wioleta, Rój Edward, Nowak Renata   +3 more
doaj   +1 more source