ISO 21528-1:2017

ISO 21528-1:2017

June 2017
International standard Current

Microbiology of the food chain - Horizontal methods for the detection and enumeration of enterobacteriaceae - Part 1 : detection of enterobacteriaceae

ISO 21528-1:2017 specifies a method, with enrichment, for the detection of Enterobacteriaceae. It is applicable to - products intended for human consumption and the feeding of animals, and - environmental samples in the area of primary production, food production and food handling. This method is applicable - when the microorganisms sought are expected to need resuscitation by enrichment, and - when the number sought is expected to be below 100 per millilitre or per gram of test sample. A limitation on the applicability of ISO 21528-1:2017 is imposed by the susceptibility of the method to a large degree of variability (see Clause 11). NOTE Enumeration can be carried out by calculation of the most probable number (MPN) after incubation in liquid medium. See Annex A.

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Main informations

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International ISO standards

Publication date

June 2017

Number of pages

17 p.

Reference

ISO 21528-1:2017

ICS Codes

07.100.30   Food microbiology

Print number

1
Sumary
Microbiology of the food chain - Horizontal methods for the detection and enumeration of enterobacteriaceae - Part 1 : detection of enterobacteriaceae

ISO 21528-1:2017 specifies a method, with enrichment, for the detection of Enterobacteriaceae. It is applicable to

- products intended for human consumption and the feeding of animals, and

- environmental samples in the area of primary production, food production and food handling.

This method is applicable

- when the microorganisms sought are expected to need resuscitation by enrichment, and

- when the number sought is expected to be below 100 per millilitre or per gram of test sample.

A limitation on the applicability of ISO 21528-1:2017 is imposed by the susceptibility of the method to a large degree of variability (see Clause 11).

NOTE Enumeration can be carried out by calculation of the most probable number (MPN) after incubation in liquid medium. See Annex A.

Replaced standards (1)
ISO 21528-1:2004
August 2004
International standard Cancelled
Microbiology of food and animal feeding stuffs - Horizontal methods for the detection and enumeration of Enterobacteriaceae - Part 1 : detection and enumeration by MPN technique with preenrichment

<p>ISO 21528-1:2004 specifies a method, with pre-enrichment, for the detection of Enterobacteriaceae. It is applicable to products intended for human consumption and the feeding of animals, and environmental samples in the area of food production and food handling.</p> <p>Enumeration is carried out by calculation of the most probable number (MPN) after incubation at 37 °C in liquid medium.</p> <p>This method is applicable when the microorganisms sought are expected to need resuscitation before enrichment, and when the number sought is expected to be in the range 1 to 100 per millilitre or per gram of test sample.</p> <p>A limitation on the applicability of ISO 21528-1:2004 is imposed by the susceptibility of the method to a large degree of variability</p>

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