Name: BS ISO 19344:2015
Brand: BSI

Milk and milk products. Starter cultures, probiotics and fermented products. Quantification of lactic acid bacteria by flow cytometry

Published date

12-31-2015

Publisher

British Standards Institution

Forewords
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Diluents and reagents
6 Apparatus
7 Sampling
8 Preparation of test sample
9 Procedure
10 Calculation and expression of results
11 Critical factors affecting results
12 Precision
13 Test report
Annex A (informative) - Diagram of staining protocols
Annex B (informative) - Calculation example of the
appropriate sample dilution
Annex C (informative) - Interlaboratory test
Bibliography

Describes a standardized method for the quantification of active and/or total lactic acid bacteria and probiotic strains in starter cultures used in dairy products by means of flow cytometry.

Committee	AW/5
DevelopmentNote	Supersedes 14/30293895 DC. (01/2016)
DocumentType	Standard
PublisherName	British Standards Institution
Status	Current
Supersedes	14/30293895 DC : 0

Standards	Relationship
ISO 19344:2015	Identical

ISO 5725-1:1994	Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
ISO 6887-1:2017	Microbiology of the food chain — Preparation of test samples, initial suspension and decimal dilutions for microbiological examination — Part 1: General rules for the preparation of the initial suspension and decimal dilutions
ISO 7218:2007	Microbiology of food and animal feeding stuffs General requirements and guidance for microbiological examinations
ISO 707:2008	Milk and milk products — Guidance on sampling
ISO 7889:2003	Yogurt Enumeration of characteristic microorganisms Colony-count technique at 37 degrees C
ISO 26323:2009	Milk products — Determination of the acidification activity of dairy cultures by continuous pH measurement (CpH)
ISO 6887-5:2010	Microbiology of food and animal feeding stuffs Preparation of test samples, initial suspension and decimal dilutions for microbiological examination Part 5: Specific rules for the preparation of milk and milk products
ISO 27205:2010	Fermented milk products Bacterial starter cultures Standard of identity
ISO 5725-2:1994	Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
ISO 15214:1998	Microbiology of food and animal feeding stuffs Horizontal method for the enumeration of mesophilic lactic acid bacteria Colony-count technique at 30 degrees C