คุณภาพทางจุลชีววิทยาของอาหารหาบเร่แผงลอยที่จำหน่ายในเขตกรุงเทพมหานคร

Abstract

Study on microbial quality of street foods was conducted. The 216 samples from various locations in Bangkok were taken during May to November 1991. The data included pathogenic bacteria (Salmonella spp., Sraphylococcus aureus and Clostridium perfringens), total viable count, yeast and mold, Coliform and Escherichia coli. The food samples were classified into four categories as follows: partially cooked, well cooked, dessert and soft drink. The results indicated. that most of the partialy cooked food were highly contaminated with total viable count and E. coli (MPN/g > 1,100). On the other hand, well cooked food had low number of viable count and E. coli except Kai palo, Kao-mun kai and Kaiyang. The desserts were comparatively low in microbial contamination while soft drink had high viable count up to 108 CFU/ml and high in MPN/100 ml of E. coli. Contamination with pathogenic bacteria were distributed in various foods but not in larse extent.