The invention provides fish glue and peach gum, and a preparation method and application thereof. The preparation method comprises the following steps: S1, taking fish glue head and
tail scraps, placing them in a deodorizing soaking liquid, and soaking them for 60-90 minutes;
fishing out the soaked fish glue head and
tail scraps, draining them, adding
purified water, and
steaming them at high temperature and
high pressure for 1-1.5 hours; filtering and removing filter residues, extracting the filtrate, and obtaining a fish glue collagen liquid; S2, adding
soy protein isolate,
calcium ascorbate,
black tea concentrate, and
purified water to the fish glue collagen liquid, and stirring them evenly to obtain a composite soaking liquid; S3, adding dry peach gum particles to the composite soaking liquid, mixing them evenly, and then soaking them at a temperature of 45-50°C for 1-2 hours, passing them through
ice water, and then soaking them in
ice water for 20-40 minutes,
fishing out, draining them, and then
drying them in a constant temperature and
humidity chamber for 24 hours; and then high-temperature treating them at 120°C for 30-40 minutes to prepare a fish glue and peach gum product. The invention processes fish glue and peach gum into one product, so that the functions of fish glue and peach gum can achieve a synergistic and complementary effect.