We present mechanistic characterization of alternating current cloud point extraction (ACPE) in a microchannel. ACPE is our original technique for on-chip extraction and preconcentration of membrane-associated biomolecules [1]. Joule heating of nonionic surfactant micellar solutions plays an important role in ACPE, but temperature of solutions during the extraction has not been investigated. In...

The present study describes a method based on headspace-solid-phase dynamic extraction (HS-SPDE) followed by GC/MS for the qualitative and quantitative analysis of benzene, toluene, ethylbenzene, o-, m- and p-xylene (BTEX), and n-aldehydes (C(6)-C(10)) in water. To enhance the extraction capability of the HS-SPDE a new cooling device was tested that controls the temperature of the SPDE needle d...

This study reports on the optimization of the extraction conditions of cordycepin from Cordyceps militaris by using ultrasonication. For this purpose, the orthogonal experimental design was used to investigate the effects of factors on the ultrasonic-assisted extraction (UAE). Four factors: extraction time (min), ethanol concentration (%), extraction temperature (°C) and extraction frequency (k...