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DANSK DSF/ISO/FDIS 16649-1 PDF

DANSK DSF/ISO/FDIS 16649-1 PDF

Name:
DANSK DSF/ISO/FDIS 16649-1 PDF

Published Date:

Status:
[ Draft ]

Description:

Microbiology of the food chain -- Horizontal method for the enumeration of beta-glucuronidase-positive Escherichia coli -- Part 1: Colony-count technique at 44 degrees C using membranes and 5-bromo-4-chloro-3-indolyl beta-D-glucuronide

Publisher:
Dansk Standard

Document status:
Active
Format:
Electronic (PDF)
Delivery time:
10 minutes
Delivery time (for Russian version):
200 business days
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$9.6
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DRAFT * SAME AS ISO FDIS 16649-1

This part of ISO 16649 specifies a horizontal method for the enumeration of b-glucuronidase-positive Escherichia coli in products intended for human consumption or for the feeding of animals. It uses a colony-count technique after resuscitation using membranes and incubation at 44°C on a solid medium containing a chromogenic ingredient for detection of the enzyme b-glucuronidase. WARNING – Some strains of Escherichia coli may grow poorly or not at all in media incubated at 44 °C. This includes strains of E. coli O157:H7 and O157:H-. Additionally, some strains of Escherichia coli, notably those belonging to serotype O157:H7 are mostly β-glucuronidase negative. Consequently, some strains of E. coli, including pathogenic ones, will not be detected by this method.


Edition : 18
File Size : 1 file , 1.1 MB
Number of Pages : 19
Product Code(s) : DSF-009, DSF-009

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