ANNEX ISupplementary provisions
ANNEX I SPECIFICATIONS OF YEAST ( SACCHAROMYCES CEREVISIAE ) BETA-GLUCANS Description Beta-glucans are complex, high molecular mass (100–200 kDa) polysaccharides, found in the cell wall of many yeasts and cereals. The chemical name for ‘yeast beta-glucans’ is (1-3), (1-6)-ß-D-glucans. This novel food is available both in an insoluble and soluble form, isolated from Saccharomyces cerevisiae . The insoluble products contain at least 70 % carbohydrate in the form of beta-glucans; the soluble product contains at least 75 % beta-glucans. The tertiary structure of the glucan cell wall of Saccharomyces cerevisiae consists of chains of ß-1,3-linked glucose residues, branched by ß-1,6-linkages, forming a backbone to which are linked chitin via ß-1,4- bonds, ß-1,6-glucans and some mannoproteins. Chemical characteristics yeast ( Saccharomyces cerevisiae ) beta-glucans Soluble form Insoluble form Total carbohydrate More than 75 % More than 70 % Beta-glucans (1,3/1,6) More than 75 % More than 70 % Ash less than 4 % Less than 5 % Moisture Less than 8 % Less than 8 % Protein less than 3,5 % Less than 10 % Fat Less than 10 % Less than 20 %