Concentrated spent fermentation beer or saccharopolyspora erythraea activated by an enzyme mixture as a nutritional feed supplement

A method for making a feed additive comprising the steps of:

• a) treating a spent fermentation beer of Saccharopolyspora erythraea with acid at a temperature of from about 80° C. to about 100° C. to form a heat-treated spent fermentation beer;
• b) cooling said heat-treated spent fermentation beer to a temperature of from about 40° C. to about 60° C.;
• c) treating said spent fermentation beer resulting from step b) with an enzyme mixture for two to twenty hours at a pH of from about 3 to about 6 to form an activated spent fermentation beer;
• wherein said enzyme mixture includes a cellulase and at least one glycosidase;
• d) concentrating said activated spent fermentation beer to at least 31 percent solids;
• and then,
• e) recovering an enzyme-treated, concentrated spent fermentation beer of Saccharopolyspora erythraea feed additive product.

A process for improving nutritive value of the spent fermentation beer of Saccharopolyspora erythraea as a feed additive comprising the steps of:

• a) treating a spent fermentation beer of Saccharopolyspora erythraea with acid at a temperature of from about 80° C. to about 100° C. to form a heat-treated spent fermentation beer;
• b) cooling said heat-treated spent fermentation beer to a temperature of from about 40° C. to about 60° C.;
• c) treating said spent fermentation beer resulting from step b) with an enzyme mixture for two to twenty hours at a pH of from about 3 to about 6 to form an activated spent fermentation beer;
• wherein said enzyme mixture includes a cellulase and at least one glycosidase;
• d) concentrating said activated spent fermentation beer to at least 31 percent solids;
• and then,
• e) recovering an improved enzyme-treated, concentrated spent fermentation beer of Saccharopolyspora erythraea feed additive product.