Highly effective synthesis of novel structured phospholipid emulsifiers using magnetically recyclable FeO@SiO/M (M = Zn or Al) composite.

It is of great importance to develop a most efficient, recyclable, and ecofriendly process to produce novel structured phospholipid emulsifiers. Herein, innovative medium-chain structured phospholipid (MCSPL) emulsifiers were synthesized through transesterification of soybean lecithins with medium-chain fatty acids (MCFAs) promoted by Zn- or Al-incorporated FeO@SiO, denoted by FeO@SiO/M (M = Zn or Al). Resultingly, FeO@SiO/M (M = Zn or Al) exhibited the most superior reactivity with 97.

Engineering a novel antibacterial agent with multifunction: Protocatechuic acid-grafted-quaternized chitosan.

As a mild cationic antibacterial agent, hydroxypropyltrimethyl ammonium chloride chitosan (HACC) could kill gram-positive bacteria and gram-positive drug-resistant bacteria without cytotoxicity. Nevertheless, it was not effective against gram-negative bacteria. Herein, protocatechuic acid (PA) with broad-spectrum antibacterial properties and pharmacological activities was grafted on HACC.