List of Articles نوردهر رکنی

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  1 - Study on the overview on food borne bacteria in foodstuffs with animal origin in Iran; Part two: meat and meat products
  S.S Shekarforoush نوردهر Rokni گیتی Karim S.M Razavi Rohani S.M.M Kiaie مریم Abbasvali
     The present study was aimed to review the contamination of meat and meat products with pathogenic bacteria in Iran. Little information is available about the contamination of meat and meat products with Bacillus cereus, because of the low contamination rate More

     The present study was aimed to review the contamination of meat and meat products with pathogenic bacteria in Iran. Little information is available about the contamination of meat and meat products with Bacillus cereus, because of the low contamination rate with the microorganism. The situation is about the same with Brucella, as the microorganism can hardly be seen in the muscles. However, not too many information is available on the contamination with Campylobacter jejuni, even though, the contamination of chicken meat with the campylobacter was addressed. Clostridium butolinum was the main discriminated bacterium to contaminate fish and its products and canned meats. Studies revealed that the big portions of meat were less likely contaminated with E. coli compared to the minced meat. Our study showed that the cross contamination of sausage is often occurred after the production chain. The situation was possibly attributed to the improvement of hygienic conditions of slaughter-houses and meat industries. Limited information was found on the contamination with Listeria monocytogenes and available data indicate that the microorganism can be present in meat and meat products. The most important factor for prevention of contamination is restricted inspection of slaughtered animals before slaughter and omission of diseased animals. Much information was accessible on the cross contamination with Salmonella in Iran and elsewhere. Salmonellosis is not common in the slaughtered animals despite its epidemiological and public health issues. The problem was also associated with the restricted inspection. Study about the staphylococcal contamination of meat was proportionately numerous. The contamination was mostly occurred in the minced Kebab in the warm seasons of the year. Generally, a low percentage of such contaminations were found in the meat products and sausage, in the surveys. Manuscript profile
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  2 - Study on the overview on foodborne bacteria in foodstuffs with animal origin in Iran; Part one: milk and dairy products
  S.S Shekarforoush گیتی Karim S.M Razavi Rohani S.M.M Kiaie نوردهر Rokni مریم Abbasvali
     In this study contamination of milk and dairy products with pathogenic bacteria in Iran has been reviewed. There are many surveys in some cases, while there is no information about some pathogenic bacteria in milk or very few data is available. It should be More

     In this study contamination of milk and dairy products with pathogenic bacteria in Iran has been reviewed. There are many surveys in some cases, while there is no information about some pathogenic bacteria in milk or very few data is available. It should be point out that the results come from the cross sectional surveys are needed for further epidemiological and experimental studies. In general the contamination of milk and dairy products has decreased in the course of time as the production methods and producer’s knowledge increased. On the other hand application of new and precise methods of detection and investigation of bacteria lead to excess detection of pathogenic microorganisms in milk. Therefore regular continuation of cross sectional studies along with using   precise and sensitive methods of sampling and analysis of bacteria are necessitated. Besides making available of needed data about the contamination of milk and milk products with pathogenic bacteria, this information make enable to adopt the effective preventive precautions for elimination or reduction of contamination. Manuscript profile
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  3 - The antimicrobial effect of Zataria multiflora Boiss. essential oil against E. coli O157: H7 in minced beef meat during refrigerated storage
  نگین Noori نوردهر Rokni افشین Basti, A علی Misaghi فهیمه Tooryan
  The antimicrobial effect of of different concentrations of Zataria multiflora Boiss. essential oil  at supplementation levels of  (0, 0.005, 0.015, 0. 03%), on E. Coli O157:H7 was examined in minced beef meat. All of the above concentrations showed acceptable More

  The antimicrobial effect of of different concentrations of Zataria multiflora Boiss. essential oil  at supplementation levels of  (0, 0.005, 0.015, 0. 03%), on E. Coli O157:H7 was examined in minced beef meat. All of the above concentrations showed acceptable organoleptic properties in minced beef. Eo at 0.03% possessed a strong antibacterial activity against E.Coli O157:H7  in minced beef. The correlation coefficient of different concentrations of zataria multiflora Boiss. essential oil with logarithm of the numbers of E. Coli O157:H7 was –0.701, –0.599 at 4 and 10°C respectively. It was found that effect of different concentrations of essential oil on growth rate of E. coli O157:H7 was statistically significant (pE. Coli O157:H7 during storage at 4°C, but not at 10°C. According to the results of present study, storage at a proper refrigerated storage (4°C) is suggested.  Manuscript profile
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  4 - Study on the overview on food borne bacteria in food with animal origin in Iran; Part three: seafood
  S.S Shekarforoush S.M Razavi Rohani گیتی karim S.M.M Kiaie نوردهر Rokni مریم Abbasvali
  The current retrospective study was focused on the contamination of seafood in Iran during the years 1999 to 2012. The isolates were Clostridium botulinum, Clostridium perferingense, Escherichia coli, Listeria monocytogenes, Salmonella, Shigella, Staphylococcus aureus a More

  The current retrospective study was focused on the contamination of seafood in Iran during the years 1999 to 2012. The isolates were Clostridium botulinum, Clostridium perferingense, Escherichia coli, Listeria monocytogenes, Salmonella, Shigella, Staphylococcus aureus and Vibrio parahemolyticus. C. botulinum type E was the most prevalent type of bacteria in the fisheries products, responsible for the most cases of botulinal food poisoning. The presence of coliforms and E. coli in the seafood was due to environmental pollution. Additionally, in the processed food, the contamination of potable water and poor handling of the products are the main sources. L. monocytogenes was isolated from fresh, frozen and processed food. The microorganism is able to grow in the refrigeration condition and multiply in the processed food. The temperature of cold smoking (20-30 ºC) cannot stop growing of Listeria. High prevalence of Salmonella in water and fisheries product was mainly because of the low environmental sanitation and various geographical conditions. However, Compost fertilizer and flowing of the swages through the farms were considered as the major source of contamination. S. aureus is not a typical microorganism of the fisheries farms but may contaminate them during the processing or in-appropriate handling of the products. V. Parahemolyticus is a normal habitant organism of the pelagic area. The organism usually find in the warm water and presents in the tropical conditions. Different species of Vibrio may contaminate the salty water in the warm seasons and so contaminate the aquatics farms in these areas. In general, the prevalence of vibriosis was associated with the consumption of semi-cooked food stuff and/or the secondary contamination of the processed ones. Manuscript profile
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  5 - Antibiotic residue contamination in milk during last forty years in Iran
  گیتی Karim S.M.M Kiaei نوردهر Rokni S.M Razavi Rouhani
  Antibiotics belong to a category of drugs called “antimicrobials,” and include medicines like penicillin, tetracycline, and amoxicillin. These drugs are used to kill or inhibit the growth of bacteria without causing significant harm to the host (such as a hu More

  Antibiotics belong to a category of drugs called “antimicrobials,” and include medicines like penicillin, tetracycline, and amoxicillin. These drugs are used to kill or inhibit the growth of bacteria without causing significant harm to the host (such as a human or an animal). When humans and animals are injected or introduced with antibiotics, the drugs accumulate in the body. These accumulated drugs are called antibiotic residue. Antibiotic residue is detectible in the blood, muscle tissue and body fluids, like milk which can be harmful for consumer’s health as well as dairy industries. The first study was carried out in 1962 in Iran. The results show an increasing trend of antibiotics residue in milk over four decades in the country. It seems that an effective strategy to involve different dimensions of the matter that is government authorized body, farmers and dairy industries for solving the problem is necessary.   Manuscript profile
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  6 - Study on the overview on foodborne bacteria in food with animal origin in Iran; Part four: Poultry and egg
  S.S Shekarforoush S.M.M Kiaie گیتی Karim S.M Razavi Rohani نوردهر Rokni مریم Abbasvali
     In this study, the contamination of poultry meat and eggs to pathogenic bacteria was investigated in Iran, for over three decades. Health assessment of these two products is highly important due to their high level of consumption and consequent health risks More

     In this study, the contamination of poultry meat and eggs to pathogenic bacteria was investigated in Iran, for over three decades. Health assessment of these two products is highly important due to their high level of consumption and consequent health risks of food borne diseases such as salmonellosis. Many reports indicate the presence of majority of pathogenic bacteria such as campylobacter, staphylococci, salmonellas, etc. in the poultry abattoirs across the country. It seems that most of these contaminations had been occurred through cross contamination during slaughtering or other stages of processing. Although many bacterial contaminations have been reported in eggs (e.g., streptococci, staphylococci, or Escherichia coli), most of studies have focused on salmonella as eggs are among the major transmission routes of this bacterium. In several suveys, salmonella has been isolated from the shell of the eggs of native breeds. According to the studies, campylobacter contamination has not been reported. Moreober, occurrence rate with other bacteria species was very low. It seems that due to the high proportions of chicken meat and eggs in the food basket of community, even low levels of contamination could be of great concern. It was concluded that maintaining of hygienic conditions and improving the knowledge of producers in the food production chain could be effective in reducing the overall contamination of pathogenic bacterial. Manuscript profile