Produced from high-quality edible proteins including silkworm pupa, soybean meal and soy protein isolate through an advanced hydrolysis process, this product offers high amino acid content and stable technical parameters for most amino acid-containing applications. It is supplied in Grades I, II and III: total nitrogen ≥12.5/11.5/11.0 g/100g, amino acids ≥80.0/75.0/70.0 g/100g, amino acid nitrogen ≥9.5/9.0/8.5 g/100g, moisture ≤6.0-7.0%, ash ≤4.5-7.0%, water-insoluble matter ≤0.5-1.0% and pH (1:10) 4.5-7.5; lead and total arsenic ≤0.5 mg/kg, total plate count ≤10,000 CFU/g and coliforms ≤0.3 MPN/g. A pale yellow powder with its own characteristic taste and odour, free of off-flavours and rancidity, suitable for nutritional health foods, solid beverages and amino acid-fortified formulations.