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Bacteriological and molecular studies on toxigenic Clostridium perfringens in milk and some milk products

• 2016
العودة
معلومات البحث
المؤلفون Ashraf A. Abd El Tawab1, Ahmed M. Ammar2, Fatma I. El-Hofy1, Hoda A. Aideia3, Eman A. Hammad4
الكلمات المفتاحية Not Available
المجلة العلمية Not Available
الناشر Not Available
المجلد Not Available
العدد Not Available
الصفحات Not Available
publication.type International
رابط البحث Not Available
المواد المرفقة Not Available
الملخص
Two hundred random samples of milk, kareish cheese, yoghurt and ice-cream (50 for each) were examined microbiologically for the presence of Clostridium perfringens , their enterotoxigencity and their antibiotic sensitivity. Clostridium perfringens was isolated from 3 (6%) milk samples, 4 (8%) kareish cheese samples and it could not be isolated from any examined samples of yoghurt and ice-cream. The majority of C. perfringens isolates recovered from milk and milk products were susceptible to ofloxacin, ampicillin + sulbactam and norfloxacin (100%), vancomycin, tetracycline, metronidazole and amoxicillin + clavulinic acid (83.3%) and clindamycin (66.7%). The majority were resistant to cephalothin (100%), sulphamethoxazole + trimethoprim (83.3%), oxacillin and chloramphenicol (66.7%). Molecular studies using multiplex PCR technique for detection of alpha toxin gene and C.perfringens types "A" enterotoxin gene revealed that the 7 isolates of C. perfringens (100%) were positive for alpha toxin gene and only 2 out of 7 isolates (28.57%) were positive for enterotoxin gene .