The invention discloses a comprehensive
aquatic product processing leftover utilization method which comprises the following steps: with
processing leftovers of
crustacean including fish,
shrimp, crab and the like as the raw materials, cleaning, low-temperature
drying,
cryogenic grinding, complex
enzymatic degradation,
organic acid extraction, high-speed
centrifugal separation,
reverse osmosis dehydration, molecule embedding, high-pressure homogenizing, vacuum low-temperature cryogenic
drying,
pelletizing, tabletting, automatic bottled packaging
production line processing and outer packing are carried out, and all high value-added bio-active substances including
astaxanthin,
protein, organic
calcium,
chitin and the derivative of the
chitin namely
chitosan in the
aquatic product processing leftovers are extracted, so that resources are comprehensively and effectively utilized without waste
discharge. According to the invention, the moderate bio-
enzyme degradation technique is adopted, the whole process is carried out under the low-temperature condition, strong acid, strong base and toxic solvents are not used, the technological process is short, the industrial chain is long, and the products are high in bioactivity, various in variety, excellent in quality, safe to eat, wide in application fields, large in
potential market, and high in comprehensive economic benefit.