Microbiological evaluation of small and large scale produced ice cream in Assiut city

Egyptian Journal of Animal Health Pub Date : 2023-10-01 DOI:10.21608/ejah.2023.311940

O. Sadek, A. M. Koriem

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Abstract

T his study aimed to compare between the microbiological criteria of small and large scale produced ice cream consumed in Assiut city, Egypt. A total of 70 small and large scale produced ice cream samples (35 each) were collected from available retailer ice cream shops and supermarkets in Assiut city and evaluated microbiologically. The incidences of aerobic bacteria count (APC), psychrotrophes, Enterococci , coliform, faecal coliform counts, Escherichia coli , yeasts and moulds counts were 100, 100, 97.14, 65.71, 31.43, 22.86, 100 and 65.71% in small scale produced ice cream samples respectively; while, in large scale produce ice cream samples, the incidences were 100, 74.29, 42.86, 45.71, 31.43, 11.43, 54.29 and 100%, respectively. Staphylococcus aureus was negative in both type of ice cream samples while coagulase negative Staphylococci (CNS) and anaer-obes were detected in small scale produce ice cream samples in incidences of 11.43 and 80% respectively, the incidences were 8.57 and 57.14% for large scale produced ones, respectively. Two isolates of Escherichia coli O157:H7 and Stx 1 and Stx 2 were detected in some Escherichia coli strains isolated from small scale produced ice cream samples. Comparison of the microbiological criteria of the two types of ice cream samples with Egyptian Standards was also done. Sources of these microorganisms, their economic and public health importance as well as the

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阿苏特市小型和大型生产冰淇淋的微生物评价

本研究旨在比较埃及阿西尤特市消费的小型和大规模生产冰淇淋的微生物标准。从阿西尤特市现有的零售商冰淇淋店和超市中收集了70个小型和大型生产的冰淇淋样品(各35个)，并进行了微生物学评估。小规模生产冰淇淋样品中需氧菌数(APC)、嗜冷菌数、肠球菌数、大肠菌群数、粪大肠菌群数、大肠杆菌数、酵母数和霉菌数的发生率分别为100、100、97.14、65.71、31.43、22.86、100和65.71%;而在大规模生产的冰淇淋样品中，发病率分别为100、74.29、42.86、45.71、31.43、11.43、54.29和100%。两种冰淇淋样品中均检出金黄色葡萄球菌阴性，小规模生产冰淇淋样品中检出凝固酶阴性葡萄球菌(CNS)和耐水球菌，发生率分别为11.43%和80%，大规模生产冰淇淋样品中检出凝固酶阴性葡萄球菌和耐水球菌的发生率分别为8.57%和57.14%。从小规模生产的冰淇淋样品中分离的大肠埃希菌中检出两株分离株:H7和stx1和stx2。并将两种冰淇淋样品的微生物学指标与埃及标准进行了比较。这些微生物的来源、它们在经济和公共卫生方面的重要性以及它们对人类健康的影响

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Egyptian Journal of Animal Health

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