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Abstract Title:

The Bactericidal Activity and Spore Inhibition Effect of Manuka Honey against.

Abstract Source:

Antibiotics (Basel). 2020 Oct 9 ;9(10). Epub 2020 Oct 9. PMID: 33050172

Abstract Author(s):

Lillian Yu, Reynal Palafox-Rosas, Brian Luna, Rosemary C She

Article Affiliation:

Lillian Yu

Abstract:

colitis overgrowth occurs when the normal gut microbiome becomes disrupted, often due to antibiotics. Effective treatment remains elusive, due partly to the persistence of its spores in the gut. Natural substances like manuka honey offer an alternative antimicrobial mechanism of action to conventional antibiotics. We investigated the antibiotic activity of manuka honey against 20isolates. The minimum inhibitory concentrations (MICs) and minimal bactericidal concentrations (MBC) of manuka honeys of methylglyoxal (MGO) grades 30, 100, 250, and 400were determined based on broth microdilution. Sporicidal activity was assessed in a range of honey concentrations by enumerating total viable cell and spore counts at 0-96 h after organism inoculation. The MICs ofranged from 4% to>30% (/). MICfor the four MGO grades were similar at 10-14%. MBC results for the majority of isolates were distributed bimodally at MBC/MIC ratios≤4 or MBC>30%. Growth kinetics in honey showed total viable cell counts remaining>10colony-forming units (CFU)/mL at all time points, whereas spore counts remained within 1-log of baseline (10CFU/mL) in honey but steadily increased in the drug-free control to>10CFU/mL by 96 h. Manuka honey demonstrated variable inhibitory and bactericidal activity against. MGO grade had no noticeable impact on overall MIC distributions or bactericidal activity. Although manuka honey could inhibit spore proliferation, it did not eradicate spores completely.

Study Type : In Vitro Study

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Sayer Ji
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