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Current Nutrition & Food Science

Editor-in-Chief

ISSN (Print): 1573-4013
ISSN (Online): 2212-3881

The Antimicrobial Activity and MICs of Black/Red Sour Cherry (Prunus cerasus L.) Extracts: III. Measurement of Sensitivity and Attenuation of Gram-Positive and Gram-Negative Bacteria and C. albicans in Culture

Author(s): Lama B. Hanbali, Raya S. Almor, Diana R. Bou Teen, Rana M. Ghadieh, Hiba A. Hasan, Yasmine K. Nakhal and John J. Haddad

Volume 9, Issue 3, 2013

Page: [233 - 248] Pages: 16

DOI: 10.2174/1573401311309030007

Price: $65

Abstract

On a prior occasion, we have measured the antimicrobial activities of sweet cherry extracts (SCEs) on grampositive/ negative bacteria and C. albicans using disk diffusion method, in addition to the minimum inhibitory concentrations (MICs) in broth cultures. In this study, the MICs of sour cherries were assessed @ 24 hrs. following bacterial/fungus inoculations. Extracts were subdivided into the following categories: Whole juice (WJE), methanol-extracted (MEJ), ddH2O-extracted pomace (dPOM) and methanol-extracted pomace (mPOM). Black sour cherries – WJE: MICs (1/16 – 1/32) for gram-positive and (1/2 – 1/32) for gram-negative bacteria; MIC for fungus was 1/32. MEJ: MICs (1/2 – 1/32) for gram-positive and (undiluted – 1/32) for gram-negative bacteria; MIC for fungus was 1/32. dPOM: MICs (undiluted – 1/16) for gram-positive and (1/2 – 1/16) for gram-negative bacteria; MIC for fungus was 1/4. mPOM: MICs (undiluted – 1/32) for gram-positive and (undiluted – 1/16) for gram-negative bacteria; MIC for fungus was 1/2. Red sour cherries – WJE: MICs (undiluted – 1/16) for gram-positive and (undiluted – 1/32) for gram-negative bacteria; MIC for fungus was 1/2. MEJ: MICs (undiluted – 1/4) for gram-positive and (1/4 – 1/16) for gram-negative bacteria; MIC for fungus was 1/2. dPOM: MICs (1/4 – 1/16) for gram-positive and (1/2 – 1/16) for gram-negative bacteria; MIC for fungus was 1/32. mPOM: MICs (1/8 – 1/32) for gram-positive and (1/4 – 1/16) for gram-negative bacteria; MIC for fungus was 1/8. These results confirm the measurable attenuating effect of P. cerasus extracts on the differential resistance/sensitivity of grampositive and gram-negative bacteria and C. albicans in broth cultures.

Keywords: Antimicrobial, attenuation, bacteria, black/red cherries, broth dilution, gram-positive, gram-negative, minimum inhibitory concentration, Prunus cerasus.


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