Protein-polysaccharides based nanoparticles for loading with Malus baccata polyphenols and their digestibility in vitro.

The poor solubility, instability and low absorption rate obstruct the bioavailability of polyphenols isolated from Malus baccata (MBP) during gastrointestinal digestion. In order to solve the limitable problems, the food-grade nanoparticles were fabricated by mucin (MC) and Hohenbuehelia serotina polysaccharides (HSP) for delivery of MBP (MBP-NPs). The physicochemical properties and morphology of MBP-NPs prepared by different condition were respectively characterized.

Mechanism of accelerating soot oxidation by NO from diesel engine exhaust.

NO oxidation of soot exhausted from engines is more efficient than O under low-temperature conditions, and is crucial for diesel particulate filter to control soot pollution. To explore the principle behind accelerating soot oxidation by NO, this paper uses density functional theory to reveal soot oxidation process by NO. This study contributes to understanding rules of soot oxidation by NO and perfecting soot oxidation models to develop soot emission control technologies.