Amino Acids

Currently, almost 2 Mton of amino acids are globally allocated for feed applications. They are very effective in reducing the overall consumption of proteins and thereby indirectly reduce the environmental impact of animal production. For example, per kg weight gain, it is feasible, through selective feeding of amino acids, to reduce the nitrogen content of manure by 50%. This relates to a substantial reduction of nitrogen deposition in soil and lower atmospheric N2O emissions. Another example highlights the impact of the feed additive L- lysine on the consumption of soybean flour. In 2005/2006 within the EU27 approx. 35.8 Mton of soybean flour were consumed. Without the ca. 300kton per year of L-lysine currently supplied, an additional 10 Mton of soybean flour in the EU would be required. Amino acids are produced by fermentation, enzymatic synthesis, extraction from protein-hydrolyzates, and chemical synthesis. Due to the substantial progress in strain development over the last two decades, the fermentation industry has seen rapid growth and increased process efficiency. The feedstocks are the typical biomass streams sucrose, molasses, and starch hydrolyzates [14] .

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