tea and sesame seed oils extracted by different methods (including supercritical fluid extraction (sfe), at a pressure of 350 atm, a temperature of 60oc, a static extraction time of 20 minutes, a dynamic extraction time of 30 minutes and 150 g kg-1 of ethanol as a modifier). solvent (se) and ultrasound-assisted solvent extraction (ue)), as natural anti-oxidants, were evaluated during 15 days st...

background & aim: essential oils are isolated from different sections of plants such as flowers, seeds, leaves, stems and roots. essential oils are applied extensively in producing of perfumes, cosmetics, foods, beverages and confectioneries and as ingredients of disinfectants and insecticides. experimental: essential oil are obtained by several isolation methods, such as hydrodistillation ...

In the present study, the solvent-solvent extraction of phenazine 1-carboxylic acid (PCA) as an environmentally friendly antifouling agent from pseudomonas aeruginosa MUT3 culture was investigated. Accordingly, after screening the extraction ability of various solvents, the combined effects of operating parameters such as solvent type (ethyl acetate, dichloromethane, and n...

Silicone passive samplers have gained an increasing attention as single-phased, practical and robust samplers for monitoring of organic contaminants in the aquatic environment in recent years. However, analytical challenges arise in routine application during the extraction of analytes as silicone oligomers are co-extracted and interfere severely during chemical analyses (e.g. gas chromatograph...

A rapid and effective high performance liquid chromatographic (HPLC) method with accelerated solvent extraction (ASE)-solid phase extraction cleanup was developed for the determination of sulfonamide and sarafloxacin residues in pork and chicken muscle. Four residues were extracted with acetic acid-acetonitrile at 70°C under 10.3 MPa pressure and 5 min static times with 2 static cycles. The sta...

In this study, the effects of three different independent variables (extraction temperature, extraction time, ultrasonic power) on total phenolic content, yield and antioxidant capacity (IC50) value olive leaf extracts Halhalı variety which is originated from South-eastern Anatolia Region were investigated. As a result evaluation made with Box-Behnken Design Model, optimum conditions determined...

In this work, different extracts from the microalga Spirulina platensis are obtained using Accelerated Solvent Extraction (ASE) and four different solvents (hexane, petroleum ether, ethanol and water). Different extraction temperatures (115oC and 170oC) were tested using extraction times ranging from 9 to 15 minutes. The antioxidant activity of the different extracts is determined by means of a...