Antimicrobial properties of 39 essential oils against thirteen foodborne microorganisms; efficacy and environmental hygiene of Prunus armeniaca in raw food preservation under cold storage

Magda Magdy Abd El-Salam ; Yassin, Sahar 


Abstract


Aim: The present study investigated the antimicrobial properties of 39 diversified essential plant oils (EOs). The most bioactive EO was selected and tested for its environmental hygiene efficacy in the preservation of stored raw food. Methods: The antimicrobial efficacy of 39 EOs was examined against 13 representative food-borne microorganisms. Minimal inhibitory concentration (MIC) of extracted apricot (Prunus armeniaca) seed EO was evaluated. Different concentrations of extracted oil were applied to four types of low-fat raw foods under cold dry storage. Results: The results of the microbial sensitivity assay showed considerable positive responses to only 23 out of 39 EOs. P. armeniaca exhibited the most significant antimicrobial efficacy. Different MIC values of extracted P. armeniaca oil were documented as a result of strain variability of representative food-borne microorganisms. Extracted apricot EO concentration delayed bacterial food spoilage at 1000 μg/ml while fungal spoilage delayed at 2000 μg/ml. Total bacterial viable count (TVC) of raw food samples treated with 1000 μg/ml oil decreased sharply when compared with TVC of samples not treated with oil. Fungal growth was completely inhibited in samples treated with 2000 μg/ml oil. Statistical analysis showed a significant association between the MIC of P. armeniaca EO and the growth of the 13 representative food-borne microorganisms, it was mostly 500 μg/ml. Conclusion: The achieved study results support using of P. armeniaca EO in controlling shelf-life of raw foods stored under dry cold conditions.


Other data

Keywords Antimicrobial efficacy, dry cold storage, essential oils, food-borne microorganisms, minimal inhibitory concentration, Prunus armeniaca, raw foods
Issue Date 20-Sep-2014
Publisher GESDAV
Journal Journal of Environmental and Occupational Science 
URI http://research.asu.edu.eg/handle/123456789/1887
DOI 10.5455/jeos.20140904041308


File Description SizeFormat 
Research (2).pdf326.38 kBAdobe PDFView/Open    Request a copy
Recommend this item

CORE Recommender
6
Views


Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.