Liquid-Phase Extraction

2020 ◽  
Author(s):  
Licto Thomas ◽  
Jagadish Vasudev Kamath

Objective: The objective of the study was to evaluate the in-vivo anti-hyperlipidemic activity of Capsicum frutescens extracts.Methods: The dried fruit powder were extracted with a three liquid phase extraction system. The acetone extract was isolated and the anti-hyperlipidemic activity was evaluated.Results: The anti-hyperlipidemic study was carried out by inducing hyperlipidemia in rats by means of triton. The serum collected was analyzed for total cholesterol, triglyceride, low-density lipoprotein and high-density lipoprotein.Conclusion: The result of the present study revealed that the acetone extract of the fruits of Capsicum frutescens possess anti-hyperlipidemic activity.


2018 ◽  
Vol 39 (15) ◽  
pp. 1833-1834
Author(s):  
Elena Ibáñez ◽  
Miguel Herrero

The Analyst ◽  
2020 ◽  
Vol 145 (20) ◽  
pp. 6668-6676
Author(s):  
Sitanan Sartyoungkul ◽  
Isaya Thaveesangsakulthai ◽  
Mark Kristan Espejo Cabello ◽  
Chadin Kulsing ◽  
Hidehiro Sakurai

Chiral cup-shaped trilactams were used as liquid phase extraction material of volatile organic compounds in perfume analyzed by SPME GC-MS. (+)-material showed higher selective chiral recognition with oxygenated and cyclic volatile compounds.


Separations ◽  
2019 ◽  
Vol 6 (4) ◽  
pp. 53 ◽  
Author(s):  
Katarzyna Madej ◽  
Wojciech Piekoszewski

The current clinical and forensic toxicological analysis of body fluids requires a modern approach to sample preparation characterized by high selectivity and enrichment capability, suitability for micro-samples, simplicity and speed, and the possibility of automation and miniaturization, as well as the use of small amounts of reagents, especially toxic solvents. Most of the abovementioned features may be realized using so-called microextraction techniques which cover liquid-phase techniques (e.g., single-drop microextraction, SDME; dispersive liquid–liquid microextraction, DLLME; hollow-fiber liquid-phase microextraction, HF-LPME) and solid-phase extraction techniques (solid-phase microextraction, SPME; microextraction in packed syringes, MEPS; disposable pipette tip extraction, DPX; stir bar sorption extraction, SBSE). Some other extraction methodologies like dispersive solid-phase extraction (d-SPE) or magnetic solid-phase extraction (MSPE) can also be easily miniaturized. This review briefly describes and characterizes the abovementioned extraction methods, and then presents their current applications to the preparation of body fluids analyzed for bioactive compounds in combination with appropriate analytical methods, mainly chromatographic and related techniques. The perspectives of the analytical area we are interested in are also indicated.


Membranes ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 311
Author(s):  
Lawrence Mzukisi Madikizela ◽  
Vusumzi Emmanuel Pakade ◽  
Somandla Ncube ◽  
Hlanganani Tutu ◽  
Luke Chimuka

In this article, a comprehensive review of applications of the hollow fibre-liquid phase microextraction (HF-LPME) for the isolation and pre-concentration of pharmaceuticals in water samples is presented. HF-LPME is simple, affordable, selective, and sensitive with high enrichment factors of up to 27,000-fold reported for pharmaceutical analysis. Both configurations (two- and three-phase extraction systems) of HF-LPME have been applied in the extraction of pharmaceuticals from water, with the three-phase system being more prominent. When compared to most common sample preparation techniques such as solid phase extraction, HF-LPME is a greener analytical chemistry process due to reduced solvent consumption, miniaturization, and the ability to automate. However, the automation comes at an added cost related to instrumental set-up, but a reduced cost is associated with lower reagent consumption as well as shortened overall workload and time. Currently, many researchers are investigating ionic liquids and deep eutectic solvents as environmentally friendly chemicals that could lead to full classification of HF-LPME as a green analytical procedure.


2012 ◽  
Vol 87 ◽  
pp. 127-134 ◽  
Author(s):  
Chao Zhang ◽  
Kun Huang ◽  
Pinhua Yu ◽  
Huizhou Liu

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