Automated analysis of available lysine and tyrosine in foodstuffs
- 1 August 1974
- journal article
- Published by Wiley in Journal of the Science of Food and Agriculture
- Vol. 25 (8) , 1007-1014
- https://doi.org/10.1002/jsfa.2740250817
Abstract
An automated chromatographic procedure for FDNBa‐available lysine determination is presented. “Available tyrosine” values can be obtained from the results and it is suggested that measurement of 100% tyrosine availability is a useful control for complete reaction of feedstuffs with FDNB. Application of the method to a range of feedstuffs confirmed the high availability of lysine in commercial feedstuffs. Using the tyrosine availability figures as a control, it is suggested that low values of lysine availability for fishmeal and meat and bone meal are an artifact but that grassmeal contains incompletely available lysine.Keywords
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