Staphylococcus aureus ATCC 25923 inhibition with propolis in pasteurized and UHT milks

Authors:

Sabire Yerlikaya

Volume 27, Issue 3;
Pages: 342-344; 2021
ISSN: 2069-0053 (print) (former ISSN: 1453-1399), Agroprint;
ISSN (online): 2068-9551

Abstract:

In this research, Staphylococcus aureus ATCC 25923 inhibition with propolis in pasteurized and UHT milks was investigated. Milk samples were divided into five groups. First group was the control samples (has Staphylococcus aureus without ethanolic extracts), the second group was inoculated with 70% ethanol (EA); the third, fourth and fifth group were inoculated with 5% EEP, 10% EEP and 15% EEP separately. Samples were then contaminated with S.aureus (12.0 log cfu/ml). Milks were inkubated at 37ºC for 24 hours.  Ethanol decreased the pathogen to 9.11 log cfu/ml and 8.6 log cfu/ml in pasteurized and UHT milks, respectively. S.aureus was determined as 5.4 log cfu/ml and 7.12 log cfu/ml in pasteurized and UHT milks with 15% EEP, respectively. The most effective extract on the pathogen was the 15% EEP. These results demonstrated that propolis can be used for decrease S. aureus in pasteurized and UHT milks at 25°C.

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