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Journal of Veterinary Medical Research
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H.S., A. (2017). Microbial quality of street-vended ice cream. Journal of Veterinary Medical Research, 24(1), 147-155. doi: 10.21608/jvmr.2017.43275
Abo El-Makarem H.S.. "Microbial quality of street-vended ice cream". Journal of Veterinary Medical Research, 24, 1, 2017, 147-155. doi: 10.21608/jvmr.2017.43275
H.S., A. (2017). 'Microbial quality of street-vended ice cream', Journal of Veterinary Medical Research, 24(1), pp. 147-155. doi: 10.21608/jvmr.2017.43275
H.S., A. Microbial quality of street-vended ice cream. Journal of Veterinary Medical Research, 2017; 24(1): 147-155. doi: 10.21608/jvmr.2017.43275

Microbial quality of street-vended ice cream

Article 15, Volume 24, Issue 1, Spring 2017, Page 147-155  XML PDF (808.11 K)
Document Type: Original Article
DOI: 10.21608/jvmr.2017.43275
Author
Abo El-Makarem H.S.
Department of Food Hygiene, Faculty of Veterinary Medicine, Alexandria University, Egypt
Abstract
h: 0px; "> Ice cream is a delicious dairy product commonly consumed during summer in all
age groups. Due to its composition, it can harbor many potent pathogens. Most ice
creams become contaminated with microbes during production, transit, and
preservation. Such contaminated food product can be responsible for food borne
infections in children, elderly people and immune-suppressed patients. Therefore,
the study was conducted to evaluate the microbiological quality of street-vended
ice creams sold in different areas of Alexandria city, Egypt. One hundred street
vended ice cream samples (50 packed and 50 unpacked) randomly collected
samples and analyzed for total bacterial count, Enterobacteriaceae count, coliform
count, enterococci count and Staphylococcus aureus. The results revealed that the
mean value of total viable count, Enterobacteriaceae count, Coliform count,
Enterococci count and Staphylococcus aureus in packed and unpacked ice cream
samples were 1.9x103±0.3x103, 1.0x106±0.8x106; 2.1x103±0.8x103,
1.9x104±0.8x104; 1.6x103± 0.6x103, 0.8x104±0.6x104; 1.3x103±0.05x103,
7.4x104±5.5x104 and 9.1x102±2.6x102, 0.8x104±0.4x104cfu/ml, respectively.
Enterobacter aerogenes, Escherichia coli, Klebsiella pneumoniae and Citrobacter
sp. could be isolated and identified from the examined packed and unpacked ice
cream samples. Serological identification of E.coli showed that the O111: K58: B4 is
the most serotype of E.coli isolated from unpacked ice cream samples while O128:
K67: B12 is the most prevalent E.coli serotype isolated from packed ice cream
samples. It is recommended to launch awareness programs to minimize the
contamination of ice cream products.
Keywords
Ice cream; Coliform; enterococci; Staph. aueus; E.coli; serology
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