نتایج جستجو برای: supercritical fluid extraction

تعداد نتایج: 390022  

Journal: :Molecules 2012
Beatriz P Nobre Luisa Gouveia Patricia G S Matos Ana F Cristino António F Palavra Rui L Mendes

Supercritical fluid extraction of all-E-lycopene from tomato industrial wastes (mixture of skins and seeds) was carried out in a semi-continuous flow apparatus using ethane as supercritical solvent. The effect of pressure, temperature, feed particle size, solvent superficial velocity and matrix initial composition was evaluated. Moreover, the yield of the extraction was compared with that obtai...

Journal: :Journal on Processing and Energy in Agriculture 2021

Amaranth seeds contain oil with important nutritional properties, in particular, because of the presence essential fatty acids, high content minerals, vitamins, lysine and squalene. In this study, kinetics supercritical fluid extraction from three amaranth seed varieties has been investigated. The average was 58.2 g/kg, ranging 54.6 to 61.1 g/kg depends on varieties, while squalene ranged 3.3 3...

2001
Andrew Douglas

Awareness that consumers demand lean meat products has spurred a considerable amount of research in product development of low-fat products. With the interest in reducing fat in meat products sweeping the country, this session provides meat scientists with an opportunity to learn about many current technologies available. One of the more innovative techniques for fat reduction may be the use of...

Journal: :Molecules 2013
Renata Menoci Gonçalves Caroline Ortega Terra Lemos Ivana Correa Ramos Leal Celso Vataru Nakamura Diógenes Aparício Garcia Cortez Edson Antonio da Silva Vladimir Ferreira Cabral Lúcio Cardozo-Filho

Calophyllum brasiliense is a rich source of bioactive coumarins, xanthones and biflavonoids. The aim of the study was to compare the phenol contents and the antioxidant activity of C. brasiliense extracts obtained by conventional and supercritical fluid extraction (SFE) methods, as well as the quantification of crude extracts and (-)-mammea A/BB yields. Dichloromethane and hexane were used as s...

Journal: :Journal of chromatography. A 2010
Miguel Herrero Jose A Mendiola Alejandro Cifuentes Elena Ibáñez

Among the different extraction techniques used at analytical and preparative scale, supercritical fluid extraction (SFE) is one of the most used. This review covers the most recent developments of SFE in different fields, such as food science, natural products, by-product recovery, pharmaceutical and environmental sciences, during the period 2007-2009. The revision is focused on the most recent...

Journal: :Journal of chromatography. A 2012
Victor Abrahamsson Irene Rodriguez-Meizoso Charlotta Turner

A method was developed based on supercritical fluid chromatography for quantitative determination of carotenoids in extracts of Scenedesmus sp. By utilizing the low backpressure in supercritical fluid chromatography, a C18 column and a 2-ethyl pyridine column were coupled in series. It was concluded that even minor changes in temperature had a substantial effect on selectivity. A standard mixtu...

2012
R. H. R. Carvalho E. L. Galvão J. Â. C. Barros M. M. Conceição E. M. B. D. Sousa

This article carried out the extraction of sesame oil by using three extraction techniques: supercritical fluid extraction (SFE), Soxhlet and sequential extraction. The SFE was performed using supercritical carbon dioxide (SC-CO2) as solvent and ethanol as cosolvent. Tests were performed at 20 MPa, 35°C and a flow rate of 2.5 g CO2/min with a total extraction time of 210 minutes. The Soxhlet ex...

2001
Martin A. Locke

Soil was treated with "C-ring-labeled fluometuron [N,N-dimethyl-N'[3-(trifluoromethyl)phenyll urea] (0.516 and 5.16 pmol gl), air-dried, and stored for 6 months at 5 "C. The 14C was then extracted from soil with methanol by conventional extraction (twice with MeOH/H20 8020 v/v; 2:l extract/soil v/w) and with CO2 using a supercritical fluid extractor. Supercritical fluid extraction (SFE) method ...

Journal: :Food chemistry 2013
Nejia Herzi Jalloul Bouajila Séverine Camy Mehrez Romdhane Jean-Stéphane Condoret

In the present study, three techniques of extraction: hydrodistillation (HD), solvent extraction (conventional 'Soxhlet' technique) and an innovative technique, i.e., the supercritical fluid extraction (SFE), were applied to ground Tetraclinis articulata leaves and compared for extraction duration, extraction yield, and chemical composition of the extracts as well as their antioxidant activitie...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید