Premium
Fabrication, characterization and antibacterial mechanism of in‐situ modification nano‐CaCO 3 /TiO 2 /CS coatings
Author(s) -
Yang Lili,
Yang Hua,
Hao Wenting,
Li Yingchang,
Li Qiuying,
Sun Tong
Publication year - 2021
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/ijfs.14897
Subject(s) - shewanella putrefaciens , nano , materials science , chemical engineering , membrane , surface modification , coating , chitosan , ultimate tensile strength , membrane permeability , bacterial growth , in situ , nanotechnology , nuclear chemistry , chemistry , bacteria , organic chemistry , composite material , biochemistry , genetics , engineering , biology
Calcium hydroxide reacts with carbon dioxide to produce nano‐CaCO 3 and water. At the same time, the modifier sodium stearate is adsorbed on the surface of nano‐CaCO 3 to form in‐situ modified nano‐CaCO 3 . Then, the nanoparticles are added to the CS solution. The sodium stearate on the surface of nano‐CaCO 3 and the polyethylene glycol 400 on the surface of nano‐TiO 2 form hydrogen bonds with the amino and hydroxyl groups of chitosan. The nanoparticles and NH 3 + charges in CS coating are absorbed to the surface of cell membrane by electrostatic interaction, and result in the change of integrality and permeability of cell membrane. So, the bacteria are killed.