Solution and rheological properties of cationic cellulose/gemini surfactant: Effect of the alkyl chain and spacer length.

In this paper, three sulfonate-containing gemini surfactants, sodium 1,1-(4,4-methylenebis(4,1-phenylene))bis(1-oxooctane-2-sulfonate) (C-M-C), sodium 1,1-(4,4-(ethane-1,2-diyl)bis(4,1-phenylene))bis(1-oxooctane-2-sulfonate) (C-M-C), sodium 1,1-(4,4-methylenebis(4,1-phenylene))-bis(1-oxododecane-2-sulfonate) (C-M-C), were synthesized and characterized with FT-IR, H NMR and MS. Furthermore, interaction between a cationic cellulose-based polyelectrolyte, PQ-10, and gemini surfactants were investigated by surface tension, turbidity, flow and low-amplitude oscillation rheology analysis. For comparing, the interaction of their corresponding monomeric counterpart sodium dodecyl sulfate (SDS), sodium 1-octanesulfate (SOS) was also studied.

Aspirin inhibits the proliferation of hepatoma cells through controlling GLUT1-mediated glucose metabolism.

Aspirin can efficiently inhibit liver cancer growth, but the mechanism is poorly understood. In this study, we report that aspirin modulates glucose uptake through downregulating glucose transporter 1 (GLUT1), leading to the inhibition of hepatoma cell proliferation. Our data showed that aspirin significantly decreased the levels of reactive oxygen species (ROS) and glucose consumption in hepatoma cells.

[Fast Determination of Auramine Ⅱ, Basic Orange Ⅱ and Metanil Yellow in Bean Products on Surface Enhanced Raman Spectroscopy and Use High Pergormance Liquid Chromatography-Tandem Mass Spectrometry to Verify].

This experiment adopts Surface Enhanced Raman Spectroscopy (SERS) to quickly detect auramine Ⅱ, basic orange Ⅱ and metanil yellow in bean products. It uses High Performance Liquid Chromatography (HPLC)-tandem mass spectrometry to verify. The best extraction solvent is methanol-water (Seven plus three) solution.