Antimicrobial activity evaluation of nano ZnO-loaded nanoliposomes against Bacillus cereus (ATCC 11778) and Pseudomonas aeruginosa (ATCC 9027) Abstract

Souri, Parvin; emamifar, aryou; Davati, Nafiseh

doi:10.22034/FSCT.21.146.106

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Journal of food science and technology ( Iran)

Volume 21, Issue 146 (2024) FSCT 2024, 21(146): 106-117 | Back to browse issues page

‎ 10.22034/FSCT.21.146.106

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Souri P, emamifar A, Davati N. Antimicrobial activity evaluation of nano ZnO-loaded nanoliposomes against Bacillus cereus (ATCC 11778) and Pseudomonas aeruginosa (ATCC 9027) Abstract. FSCT 2024; 21 (146) :106-117
URL: http://fsct.modares.ac.ir/article-7-70486-en.html

Antimicrobial activity evaluation of nano ZnO-loaded nanoliposomes against Bacillus cereus (ATCC 11778) and Pseudomonas aeruginosa (ATCC 9027) Abstract

Parvin Souri¹

, Aryou Emamifar

², Nafiseh Davati¹

1- Bu-Ali Sina University
2- Bu-Ali Sina University , a.emamifar@basu.ac.ir

Abstract: (669 Views)

In this research, in-vitro time- kill curve effect of nano-ZnO loaded nanoliposomes against Bacillus cereus (ATCC 11778) and Pseudomonas aeruginosa (ATCC 9027) were evaluated. Thin layer hydration sonication and heat methods were evaluated to preparation of nano-ZnO loaded nanoliposomes at different level of lecithin: nano-ZnO ratio (5:1, 15:1, and 25:1 w/w). The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of nano-ZnO loaded nanoliposomes and free nano-ZnO against Bacillus cereus and Pseudomonas aeruginosa were determined. Results showed that the encapsulation of nano-ZnO in nanoliposome systems significantly increased their antimicrobial activities. Nano-ZnO loaded nanoliposomes were prepared at the highest ratio of lecithin: nano-ZnO ratio (25:1 w/w) showed higher antimicrobial activity compared to those prepared by heat method. From the time- kill curves, the log phase growth of Escherichia coli (8 hours) and Staphylococcus aureus (7 hours) in the medium containing nano-ZnO loaded nanoliposomes prepared through the thin layer hydration sonication at the highest level of lecithin: nano-ZnO ratio (25:1 w/w) at MIC and MBC values decreased to 3 and 3 hours and to 1 and less than 1 hours, respectively.

Keywords: Antimicrobial activity, Nanoliposome, Nano-ZnO

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Article Type: Original Research | Subject: Food Microbiology
Received: 2023/07/12 | Accepted: 2023/10/11 | Published: 2024/03/20

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