Incidence of faecal streptococci as an indicator of sanitation in ice‐cream and frozen vegetables

Abstract

Fifty‐three ice‐cream and fifty‐five frozen vegetable samples, collected from two different factories, were analysed for total coliform bacteria, faecal coliform bacteria and faecal streptococci so that the value of faecal streptococci as an indicator of faecal contamination and sanitation in ice‐cream and frozen vegetables could be evaluated. Thirty‐two per cent of the ice‐cream samples and 73% of the frozen vegetable samples were positive for coliform bacteria, whereas only 4% of the ice‐cream samples and 24% of the frozen vegetable samples contained faecal coliform bacteria. Occurrence of faecal streptococci in the ice‐cream and frozen vegetable samples were 81 and 75%, respectively. These results indicate that there is no direct relationship between the presence of faecal coliforms and faecal streptococci, and the high occurrence of faecal streptococci in frozen foods examined suggests that faecal streptococci is a better sanitary indicator in frozen food products.

Investigation of Milk and Some Dairy Products for Fecal Pollution Indicators

“…perfringens should be included in food criteria as indicators of sanitation rather than fecal contamination. This result agreed to some extent with that recorded by Turantas (2002), Bahout and Moustafa (2006) who claimed that the levels of Enterococci were higher than fecal coliforms in ice cream and frozen vegetables as well as Kareish cheese and thus favoring Enterococci as better indicators of contamination in such foods. Furthermore, this investigation indicated that the evaluated samples collected from the local markets in Assiut city were of poor sanitary quality which means fecal pollution and could pose a considerable risk to consumers.…”

Faecal bacteria in Perna perna (Linnaeus, 1758) (Mollusca: Bivalvia) for biomonitoring coastal waters and seafood quality

“…Considering that this group of bacteria can cause diseases and that they are considered to be better indicators of fecal contamination in sea waters (CABELLI, 1983) and in shellfish and other kinds of food (MARINO et al, 2005;TURANTAS, 2002), new limits for the densities of Enterococci in harvesting waters and in mussel flesh should be elaborated.…”