Physicochemical and antibacterial properties of fabricated ovalbumin-carvacrol gel nanoparticles.

The applications of carvacrol are limited due to its poor stability and water solubility, and high volatility; however, ovalbumin can be used to encapsulate hydrophobic molecules, improve their aqueous solubility, and reduce their volatility. In this study, we fabricated ovalbumin-carvacrol nanoparticles (OCGns) under different pH (2, 5, 7, and 9) conditions using a gel embedding method and investigated their physicochemical and antibacterial properties. Rheological experiments revealed that the G' of ovalbumin gels (OGs) prepared under different pH conditions were OG-2 > OG-7 > OG-9 > OG-5.

Production, characterization, cloning and sequence analysis of a monofunctional catalase from Serratia marcescens SYBC08.

A monofunctional catalase from Serratia marcescens SYBC08 produced by liquid state fermentation in 7 liter fermenter was isolated and purified by ammonium sulfate precipitation (ASP), ion exchange chromatography (IEC), and gel filtration (GF) and characterized. Its sequence was analyzed by LC-MS/MS technique and gene cloning. The highest catalase production (20,289 U · ml(-1)) was achieved after incubation for 40 h.