DIN EN ISO 29981:2025-11
Milk products - Enumeration of bifidobacteria - Colony-count technique (ISO 29981:2024); German and English version prEN ISO 29981:2025 / Note: Date of issue 2025-10-24
| Fecha de anulación: |
2026-06-01
Anulada
|
|---|---|
| Idiomas disponibles: | Alemán, Inglés |
| Resumen: | This document specifies a method for the selective enumeration of bifidobacteria in milk products by using a colony-count technique at 37 °C under anaerobic conditions. The method is applicable to milk products, such as fermented (e. g. yoghurts) and non-fermented milks (e. g. pasteurized milks, skim milks, whey protein concentrates), milk powders and formulae (e. g. infant formulae, follow-up formulae for older infants, products for young children) where these microorganisms are present and viable, in combination with other lactic acid bacteria or alone. The method is also applicable to starter and probiotic cultures. For proposed quality criteria of dairy products, see, for example, CXS 243-2003. Bifidobacteria used in milk products usually belong to the following species (e. g. References [7] and [10]): - Bifidobacterium adolescentis; - B. animalis subsp. animalis; - B. animalis subsp. lactis; - B. bifidum; - B. breve; - B. longum subsp. infantis; - B. longum subsp. longum. |
| Keywords: | Bacteria|Bacteria count methods|Chemicals|Colony count techniques|Composition|Count methods (microbiology)|Dairy analysis|Dairy products|Definitions|Determination|Food control|Food inspection|Food products|Interpretations|Medium|Microbiological analysis|Microbiology|Micro-organisms|Microorganisms|Milk|Milk products|Test equipment|Testing |
| ICS: | 67.100.01 - Leche y productos lácteos en general |
| CTN: | |
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Equivalencia Internacional |
Idéntica ISO 29981:2024 |
|
Reemplazo Normas |
Es reemplazada por DIN EN ISO 29981:2026-06 |
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