scholarly journals Effects of processing parameters on the caffeine extraction yield during decaffeination of black tea using pilot-scale supercritical carbon dioxide extraction technique

2018 ◽  
Vol 55 (4) ◽  
pp. 1407-1415 ◽  
Author(s):  
Saziye Ilgaz ◽  
Ihsan Gungor Sat ◽  
Atilla Polat
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Black Tea ◽  
Processing Parameters ◽  
Pilot Scale ◽  
Extraction Yield ◽  
Extraction Technique ◽  
Supercritical Carbon Dioxide Extraction ◽  
Carbon Dioxide Extraction ◽  
Caffeine Extraction

scholarly journals Influence of Supercritical Carbon Dioxide Extraction Conditions on Extraction Yield and Composition of Nigella sativa L. Seed Oil—Modelling, Optimization and Extraction Kinetics regarding Fatty Acid and Thymoquinone Content

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6419
Author(s):  
Grzegorz Gawron ◽  
Wojciech Krzyczkowski ◽  
Robert Łyżeń ◽  
Leszek Kadziński ◽  
Bogdan Banecki
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Seed Oil ◽  
Nigella Sativa ◽  
Extraction Yield ◽  
Biologically Active ◽  
Supercritical Carbon Dioxide Extraction ◽  
Oil Fraction ◽  
Carbon Dioxide Extraction ◽  
Supercritical Carbon

Nigella sativa L. is cultivated in many regions and its seeds have found use in variety of foods, but also in traditional medicine due to high content of biologically active essential oils. In this work optimization of supercritical carbon dioxide extraction from N. sativa seeds was performed using response surface methodology to describe the influence of extraction conditions on oil yield. Kinetics of oil and thymoquinone extraction were analyzed as well. It was demonstrated that in order to collect thymoquinone-rich N. sativa oil fraction, appropriate for health-related applications, the extraction should be carried out at 40 °C and 10–15 MPa. Following application of higher pressure of 35 MPa enables effective extraction of remaining oil rich in polyunsaturated fatty acids suitable for use in food industry. Thymoquinone-dependent antibacterial activity of the N. sativa seed oil was observed against bacterial pathogens: Haemophilus influenzae, Staphylococcus haemolyticus, Staphylococcus epidermidis, Enterococcus faecalis and Escherichia coli.

Sign in / Sign up

Export Citation Format

Share Document