1 Scope
This standard specifies the method for detection of coil form bacteria in food.
This standard is applicable to the detection of coil form bacteria in various foods.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions, of any of these publications do not apply to this standard. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document applies.
GB 4789.28-2003 Microbiological examination of food hygiene —Stainning methods, culture mediums and reagents
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
coli form bacteria
a group of aerobic and facultative anaerobic non-spore forming gram-negative bacillus capable of fermenting lactose, producing acid and gas. The bacteria mainly come from human and animal feces, it is therefore used as an index of fecal pollution to evaluate the hygienic quality of food and infer whether there is the possibility of contaminating intestinal pathogenic bacteria in food
the number of coil form bacteria in food is expressed by the most probable number (MPN) of coil form bacteria in 100 mL (g) sample
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Equipment and materials
5 Culture mediums and reagents
6 Test procedure
7 Operation steps
8 Fecal coli form
