Optimization and characterization of gelatin derived from surimi waste

Surimi processing waste consisting of skins and bones of Tiger toothed croaker (TTC) (Otolithes ruber) and Pink perch (PP) (Nemipterus japonicus) were evaluated as a source of gelatin. In this background fish gelatin has been highlighted as a better alternative to mammalian gelatins from ethical and religious point of views. However with qualities such as a lower melting point resulting in faster dissolution in the mouth and absence of residual ‘chewy’ mouth feel has affected its commercial applications. Fish gelatin is acceptable for Islam and can be used with minimal restrictions in Judaism and Hinduism. Furthermore fish skin which is a major byproduct of the fish-processing industry could provide a valuable source of gelatin. Researchers suggested that in addition to producing fish gelatins to meet religious needs the commercial use of fish skin and bones which are normally discarded is a good waste management practice leading to additional economic benefit.