Manufacturing process of amino acid fertilizer compositions by using marine by-products

The present invention relates to a manufacturing process of an amino acid fertilizer composition using by-products, which can manufacture an amino acid fertilizer composition, high molecular collagen, and low molecular collagen peptide from fishskin by-products, and accordingly, can economically manufacture an amino acid fertilizer composition, which is high in amino acids, high molecular collagen, and low molecular collagen peptide using disposed fishskin. [Reference numerals] (AA) Fishery by-products;(BB) Alkali extraction;(CC,LL) Alkali residue;(DD,MM) Acid-soluble collagen;(EE,NN) Pepsin-soluble collagen;(FF) High molecular collagen;(GG) Dealkalization solution (containing protein);(HH) Amino acid salt;(II) Amino acid liquid fertilizer;(JJ) Functional liquid fertilizer;(KK) Alkaline hydrolysis;(OO) Low molecular collagen