Rapid molecular techniques for detection of foodborne Bacillus cereus pathogen

نویسندگان

  • Abdelhafez Samir Abdelhafez Department of Biotechnology Animal Health Research Institute, Agricultural Research Center (ARC), Reference Laboratory for Veterinary Quality Control on Poultry Production, Egypt.
  • Asmaa Hassan Department of Food Hygiene, Animal Health Research Institute, Agricultural Research Center (ARC), Egypt.
چکیده مقاله:

Background and Objective: Bacillus cereus is responsible for several outbreaks of foodborne diseases. Therefore, the purpose of the study was to replace routine culture testing, by employing PCR directly from food to detect the bacteria and its enterotoxins. Methods: In the present study, a total of 75 Kibda sandwiches, Sausage sandwiches, Luncheon chicken, Luncheon meat and shawarma sandwiches (15 each) were collected from different places for bacteriological isolation, identification and rapid analysis by using PCR. Results: Bacterial isolation revealed 17 positive samples isolated from different food types, of those 17 samples, 40% were Kibda, 26.6% were Sausage, 20% was Luncheon chicken, 13.3% were positive for both Luncheon meat and shawarma sandwiches. Using PCR to identify B. cereus from positive isolates (group A) 8 isolates were detected with its enterotoxins genes nhe & cytK at 533, 766 and 421 bp respectively, Also the PCR, which used in detection of Bacillus cereus directly from food related to positive samples (group B) revealed that 8 Bacillus cereus were detected in food with its enterotoxins genes nhe & cytK, while group C which represents some random food samples of negative isolation result revealed that 3 Bacillus cereus positive strains were detected and its enterotoxins genes nhe & cytK. Conclusion: PCR assay was a sensitive & specific diagnostic tool in detection of Bacillus cereus with its enterotoxins genes directly from food samples, even in the presence of low numbers of B. cereus bacteria which cannot be detected by traditional isolation and identification  

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Molecular approaches for detection and identification of foodborne pathogens

Foodborne pathogens comprise microorganisms such as viruses, bacteria and parasites that can be transmitted by food and affect public health worldwide. The most common viruses transmitted via food are hepatitis A virus and Norwalk-like caliciviruses. Also, the most common bacteria involved in foodborne illnesses are Campylobacter jejuni, Clostridium perfringens, Salmonella spp, Escherichia...

متن کامل

Presenting a rapid method for detection of Bacillus cereus, Listeria monocytogenes and Campylobacter jejuni in food samples

Objective(s): Listeria monocytogens, Bacillus cereus and Campylobacter jejuni are three toxin producing bacteria over the world, especially in Iran, and it is essential to find a certain, rapid procedure to identify these microorganisms. In this research, these bacteria were simultaneously detected by multiplex PCR technique in foods. Materials and Methods: The primary approval of bacterial str...

متن کامل

Bacillus cereus, a volatile human pathogen.

Bacillus cereus is a Gram-positive aerobic or facultatively anaerobic, motile, spore-forming, rod-shaped bacterium that is widely distributed environmentally. While B. cereus is associated mainly with food poisoning, it is being increasingly reported to be a cause of serious and potentially fatal non-gastrointestinal-tract infections. The pathogenicity of B. cereus, whether intestinal or nonint...

متن کامل

Use of Frequency Distribution Functions to Establish Safe Conditions in Relation to the Foodborne Pathogen Bacillus cereus**

Minimal processing implementation greatly depends on a detailed knowledge of the effects of preservation factors and their combinations on the spoilage and foodborne pathogenic microorganisms. The effectiveness of mild preservation conditions will become increasingly dependent on a more stochastic approach linking microbial physiological factors with product preservation factors. In this study,...

متن کامل

Molecular epidemiology of Bacillus cereus food poisoning.

OBJECTIVES To investigate the potential use of DNA techniques in epidemiological diagnosis of Bacillus cereus food poisoning. SUBJECTS Fifty six B. cereus isolates from milk were studied. DESIGN The 56 B. cereus isolates were characterised into enterotoxin positive (27 isolates) and enterotoxin negative (29 isolates) using reverse passive latex agglutination technique. SETTING Plasmid and...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ذخیره در منابع من قبلا به منابع من ذحیره شده

{@ msg_add @}


عنوان ژورنال

دوره 17  شماره 3

صفحات  12- 12

تاریخ انتشار 2023-06

با دنبال کردن یک ژورنال هنگامی که شماره جدید این ژورنال منتشر می شود به شما از طریق ایمیل اطلاع داده می شود.

کلمات کلیدی

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023