CEN/TC 454/WG 7 - Product test methods - saccharides, proteins, amino-acids

This document describes a method for determining the total protein content of algal biomass.
Therefore, an existing method for measurement and calculation will be adapted.
The method consists of the measurement of the nitrogen content by a practical test method and the calculation of the protein content by a coefficient.
The document will describe the test method for nitrogen measurement.
As the coefficient usually used for protein determination (6.25) is too high for algae, the document will give a recommendation for a coefficient which is more specific to algae and thereby more accurate.

This document describes a method for determining the amino acid profile of algal biomass.
It specifies a method for the determination, in one single analysis, of the following amino acids: alanine, arginine, aspartic acid (combined with asparagine), cystine (dimer of cysteine, combined with cysteine), glutamic acid (combined with glutamine), glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tyrosine and valine.
This method does not apply to the determination of tryptophan. The existing draft standard ISO/DIS 4214 – Milk and milk products – Determination of amino acids in infant formula and other dairy products will be evaluated and adapted.