prEN ISO 7889
Yoghurt - Enumeration of characteristic microorganisms - Colony-count technique (ISO 7889:2026)
Draft Public enquiryProject stage codes
1. Decision on WI Proposal
2. Projektas
3. Viešoji apklausa
From 2026-08-04
till 2026-10-03
4. Closure of enquiry
5. Submission to Formal Vote
Organisation
CEN Europos standartizacijos komitetasICS
07.100.30 - Food microbiologyTechnical Committee
TK 51 Food analysis- Horizontal methodsForeignTC'S
CEN/TC 302Number of comments
0Comment start date
2026-08-04Scope
This document specifies a method for the enumeration of the characteristic microorganisms Lactobacillus delbrueckii subsp. bulgaricus (in short: L. bulgaricus) and Streptococcus thermophilus (in short: S. thermophilus) by means of the colony-count technique. The method is applicable to yoghurts (for the definition see CXS 243‑2003). The colony-count technique (pour plates) is suitable for, but not limited to, the enumeration of L. bulgaricus and S. thermophilus in test samples with a minimum of 10 colonies counted on a plate. This corresponds to a level of the characteristic microorganisms L. bulgaricus and S. thermophilus that is expected to be higher than 100 cfu/g. The colony-count technique (spread plates) is suitable for, but not limited to, the enumeration of L. bulgaricus and S. thermophilus in test samples with a minimum of 10 colonies counted on a plate. This corresponds to a level of the characteristic microorganisms L. bulgaricus and S. thermophilus that is expected to be higher than 1 000 cfu/g.