The Estimation of Crude Protein in Rapeseed Meal by a Dye-Binding Method

Goh, Y.K.; Clandinin, D.R.

Canadian Journal of Animal Science 58(1): 97-103


ISSN/ISBN: 0008-3984
DOI: 10.4141/cjas78-013
Accession: 068493058

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The relationships between Kjeldahl protein content and the dye-binding capacity (DBC) with Orange G and Acid Orange 12 of 15 rapeseed meals were studied. The unbound dyes were measured with a Beckman spectrophotometer and also by the Udy colorimeter in the case of Acid Orange 12. The correlation between Dbc and Kjeldahl protein content or total basic amino acids was highly significant. The results favored the Udy method with Acid Orange 12.