Food grade zinc oxide bulk particle composite can replace the toxic zinc oxide nano composite towards the control of pathogenic and spoilage bacteria
Food grade zinc oxide bulk particle composite can replace the toxic zinc oxide nano composite towards the control of pathogenic and spoilage bacteria
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Date
2020-12-15
Authors
S. Visnuvinayagam
L. N. Murthy
U. Parvathy
A. Jeyakumari
G. K. Sivaraman
D. Karthikeyan
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Journal ISSN
Volume Title
Publisher
Oxford Academic
Abstract
ZnO-Nanoparticle-Chitosan (ZnO-NP-CH) composite has potential biomedical and food applications due to its better
antimicrobial activity. However, the presence of nano-metal-oxide in the composite makes the material unsuitable for any
food applications. Moreover, the cost involved in the preparation of Zinc Oxide-Nano-Particle (ZnO-NP) is a major limitation
for commercial food applications. Hence a suitable alternative for ZnO-NP is highly needed for food application. Since
ZnO-Bulk Particles (ZnO-BP) are food grade and there is no study on the composite prepared from ZnO-Bulk
Particle-Chitosan (ZnO-BP-CH), in the present study, antimicrobial activity was assessed for ZnO-BP-CH and compared with
ZnO-NP-CH. Based on the study, it was observed that in the individual form of ZnO-NP possessed significantly higher
antimicrobial activity than ZnO-BP. The composite form of ZnO-NP-CH and ZnO-BP-CH possessed higher antimicrobial
activity than chitosan. However, no significant difference was observed between the composite forms. Hence, ZnO-BP-CH
could be recommended as a suitable alternative to ZnO-NP-CH for future studies related to chitosan with ZnO composite to
avoid costly nanomaterials preparation.
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Citation
FEMS Microbiol. Lett. 368(1).