The invention discloses a high purity soybean
oligopeptide having unique
solubility and a preparation method and application.
Soy protein isolate
powder is subjected to hydration, enzymolysis, enzymedeactivation,
charcoal absorption for decoloring, and
solid-liquid separation to obtain liquid, and the obtained liquid is subjected to
ultrafiltration,
nanofiltration, concentration, sterilization, and
drying, so that the high purity soybean
oligopeptide having unique
solubility is obtained. The
protein content of the
oligopeptide is greater than or equal to 94%, the content of
peptide is greaterthan or equal to 91%, the
peptide of which the relative molecular weight is smaller than 1000Da is 83.7%-85.6%,
free amino acid is 0.32%-0.41%, and the
sodium content is 48.7-56.6mg / 100g. In the dissolving process, high sensory experience of being free from aggregation, enabling
peptide powder to directly and quickly dissolve in the surface of an
aqueous solution like snowslide, being free from bubbles, and the like is presented in the dissolving process; the high purity soybean oligopeptide is free from peculiar smell, free from bitterness, and soft in mouth feel, can be used as superior rawmaterials of health-care foods, special medical foods and common foods, and is suitable for various
crowds.