Research progress on the microbiological contamination of prepared beverage in China

Abstract

ObjectiveTo investigate the microbial contamination of prepared beverage in China.MethodsAccording to the principle of random sampling， 3 583 samples of prepared beverage and edible ice were collected from representative restaurants， beverage shops， fast food restaurants and collective school canteenagers in municipalities and autonomous regions of China. The total number of bacteria， coliform bacteria， Staphylococcus aureus and Salmonella were detected by the national standard method.ResultsTotal colonies of 8.42% of the product were greater than 105 CFU/mL， coliforms of 19.32% of the products were greater than 102 MPN/mL. The detection rates of S. aureus and Salmonella were 2.56% and 0.09%， respectively， which were lower than 102 MPN/mL. The contamination in protein drinks was the most serious， the ratios of total colonies over 105 CFU/mL and coliforms over 102 MPN/mL were 21.35% and 32.97%， respectively. From March to May， the sanitary condition of prepared beverages was the worst， and the ratio of total number of colonies greater than 105 CFU/mL was 14.80%. The highest detection rate of S. aureus was 5.24% in restaurants and hotels.ConclusionThe food safety status of current prepared beverage is generally good， but related departments should also strengthen the supervision and inspection of the processing place.

Keywords

• prepared beverage
• microbial contamination
• standard
• food safety