Twenty samples of Laban rayeb (a type of fermented milk) were collected from several markets in Lower Egypt and subjected to chemical and microbiological analysis. Based on the results, differences were observed in chemical composition and microbiological properties of these samples compared with the chemical and microbiological characteristics of other fermented milks produced in Egypt, such as zabady, yoghurt, laban zeir and kishk.
A high incidence of coliform contaminants was detected. Enterococci were identified as the most predominant species.