Speculation of Sphingolipids in Capsanthin by Ultra-Performance Liquid Chromatography Coupled with Electrospray Ionization-Quadrupole-Time-of-Flight Mass Spectrometry.

Sphingolipids are constituents of cellular membranes and play important roles in cells. As nutraceutical compounds in foods, sphingolipids have been proven to be critical for human health. Therefore, the sphingolipids content of capsanthin was established based on ultra-performance liquid chromatography coupled with electrospray ionization-quadrupole-time-of-flight mass spectrometry.

Microwave-assisted preparation of ZnFeO-Ag/rGO nanocomposites for amplification signal detection of alpha-fetoprotein.

In this study, a novel signal-amplified immunosensor was designed by using a microwave-assisted self-assembly method to synthesize ZnFeO-Ag/rGO nanocomposites. The conductivity of ZnFeO-rGO nanocomposites was significantly improved due to the effective inhibition of rGO accumulation by the insertion of ZnFeO and Ag nanoparticles (NPs) into graphene sheets. Excellent sensitivity and reproducibility were achieved through the microwave-assisted preparation of ZnFeO-Ag/rGO nanocomposites as a substrate, with the Ag NPs enhancing the signal because of the effective conductive matrix.