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DIN EN ISO 16634-2:2025-11

Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 2: Cereals, pulses and cereal coproducts (ISO/DIS 16634-2:2025); German and English version prEN ISO 16634-2:2025 / Note: Date of issue 2025-09-26*Intended as replacement for DIN EN ISO 16634-2 (2016-11).

Fecha edición: 2025-11-01
En Vigor
Idiomas disponibles: Alemán, Inglés
Resumen: This part of ISO 16634 specifies a method for the determination of the total nitrogen content and the calculation of the crude protein content of cereals, pulses and cereal coproducts (e. g. wheat flour, wheat starch, peas proteins, wheat gluten, semolina). This method, like the Kjeldahl method (see References [1] and [6]), does not distinguish between protein nitrogen and non-protein nitrogen. For the calculation of the protein content, various conversion factors are used (see 3.2).

Keywords: Cereal food products|Cereals|Combustion test methods|Composition|Content|Crude proteins|Definitions|Determination|Determination procedures|Dumas|Flour|Food products|Investigation methods|Investigations|Maize|Mathematical calculations|Nitrogen|Nitrogen content|Powdered|Pulses (crops)|Research methods|Testing
ICS: 67.060 - Cereales, leguminosas y productos derivados
CTN:

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