Regarding the new extraction process for amino acids

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Process description for extracting amino acids using resin 1. An amino acid extraction process, characterized in that it comprises the following steps: Step 1: Hydrolyze the raw materials to obtain a hydrolysate, which is then diluted and decolorized; filtration yields amino acid solution A. The said raw materials are animal and plant proteins such as blood meal, soybean meal, corn protein, pig hair, or duck hair； Step 2: Add a precipitant to amino acid solution A and stir; filter to obtain amino acid solution B and amino acid precipitate crystals ； Step 3: Use resin adsorption to recover the precipitant from amino acid solution B to obtain amino acid solution C; then add a neutralizing agent to neutralize the excess acid, and filter to obtain amino acid solution D, along with amino acid and salt crystals ； Step 4: Concentrate amino acid solution D, and then place the concentrated solution in a spray drying apparatus for drying to obtain complex amino acids ； Step 5: Process the amino acid precipitant crystals from Step 2 to obtain amino acids ； Step 6: Process the amino acid and salt crystals from Step 3 to obtain the amino acid.