Preservation of Iiombay duck (Harpodon nehereus) and Rohe (Labeo r hita) by Gamma irradiation

Abstract

The gamma irradiation procedures for preservation of Bombay duck and rohu
were studied in collaboration with Bhabha Atomic Research Centre, Bombay.
Irradiation at 0.1 M rad extended the storage life of Bombay duck to 20-22 days at
0-2°C due to partial destruction of spoilage organisms as against rapid deterioration
of un-irradiated samples within 5-6 days. In the case of the fresh water fish, rohu,
the storage life was enhanced by about 7-10 days by the same dose of irradiation
over the control under identical storage condition. In all the cases, empirical
relations were worked out between organoleptic rating and total volatile nitrogen.