Use of chitosan in improving the technology of frozen pacific sardine (ivasi)

Fish cold preservation is one of the most common preservation methods that allow you to preserve the native properties of raw materials as much as possible. This is especially important for certain fish species that are characterized by high fat content and enzyme activity such as Pacific sardine (Ivasi). In order to improve the technology of sardine freezing, it is proposed to pre-cool the fish in an aqueous solution of chitosan. The rational concentration of chitosan solution - 3% was experimentally established. The ratio of fish to the cooling medium is scientifically justified, which is 1: 3. Frozen Pacific sardine with the use of advanced technology, has a prolonged shelf life of 18 months.