AE	Association efficiency
ATCC	American Type Culture Collection
ATR	FTIR-attenuated total reflectance Fourier transform infrared
CS	Chitosan
H. pylori	Helicobacter pylori
HP	Hypromellose phthalate
METD	Method
MHB	Mueller Hinton broth
MT	Metronidazole
Nano PECs (NP)	Nanostructured polyelectrolyte complexes
PDI	Polydispersity index
ZP	Zeta potential