Two new bibenzyl methylglucosides as SIRT3 activators obtained through microbial transformation.

Microbial transformation of dihydroresveratrol (DHRSV) using has produced two new methylglucosylated derivatives of DHRSV ( and , whose structures were characterized as 4'--(4″--methyl--D-glucopyranosyl)-dihydroresveratrol (4'--MG DHRSV, ) and 3--(4″--methyl--D-glucopyranosyl)-dihydroresveratrol (3--MG DHRSV, ) on the basis of spectroscopic methods. They showed moderate SIRT3 agonistic activity, and compound exhibited the best deacetylation of 406.63% at 10 μM.

Interactions between Used Cooking Oil Biodiesel Blends and Elastomer Materials in the Diesel Engine.

Used cooking oil (UCO) biodiesel may be one of the most potential alternative fuels in China to lower the dependency on crude oil for transportation. An experimental study has been conducted to assess the interactions between biodiesel produced from UCO in Shanghai and elastomer materials on high-speed marine diesel engines by immersing elastomer materials into conventional fossil diesel, 5, 10, and 20%, of a volumetric blending ratio of UCO biodiesel and pure UCO biodiesel. The test duration is 168 h at different temperatures of 25, 50, and 70 °C.

Synthesis of highly stable cyanine-dye-doped silica nanoparticle for biological applications.

Cyanine dyes are widely used in biological labeling and imaging because of their narrow near infrared emission, good brightness and high flexibility in functionalization, which not only enables multiplex analysis and multi-color imaging, but also greatly reduces autofluorescence from biological matter and increases signal-to-noise ratio. Unfortunately, their poor chemical- and photo-stability strongly limits their applications. The incorporation of cyanine dyes in silica nanoparticles provides a solution to the problem.