Antimicrobial and inhibitory enzyme activity of N-(benzyl) and quaternary N-(benzyl) chitosan derivatives on plant pathogens
作者： Mohamed E.I. Badawy , Entsar I. Rabea , Nehad E.M. Taktak
DOI: 10.1016/J.CARBPOL.2014.04.098
关键词:
摘要: Abstract Chemical modification of a biopolymer chitosan by introducing quaternary ammonium moieties into the polymer backbone enhances its antimicrobial activity. In present study, series N-(benzyl) derivatives were synthesized and characterized 1H-NMR, FT-IR UV spectroscopic techniques. The activity against crop-threatening bacteria Agrobacterium tumefaciens Erwinia carotovora fungi Botrytis cinerea, Botryodiplodia theobromae, Fusarium oxysporum Phytophthora infestans evaluated. results proved that grafting benzyl moiety or quaternization onto molecule was successful in inhibiting microbial growth. Moreover, increase water-solubility compounds significantly increased fungi. Exocellular enzymes including polygalacturonase (PGase), pectin-lyase (PLase), polyphenol oxidase (PPOase) cellulase also affected at 1000 mg/L. These especially quaternary-based have good inhibitory effect should be potentially used as agents crop protection.
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