Shrimp's waste: Chemical composition, nutritional value and utilization

Abstract

Shrimp's waste (dried head or shell) was found of high protein content and high level of minerals especially Ca, P, Na and Zn. The amino acids profile of the dried shrimp's shell proved to be of higher values than the shrimp's head. Glutamic acid was the abundant amino acid in both dried samples. The saturated: unsaturated fatty acids ratio was 1 : 1.63 for the dried shrimp's head and 1 : 1.51 for the dried shrimp's shell. The dried shrimp's shell and head appeared to be free from aflatoxines (B 1 , B 2 , G 1 & G 2 ) concentrations. Also the two dried samples proved their safety from the bacteriological point of view. Two suggested potato croquettes recipes containing either 5% dried shrimps head or 5% shrimp's shell, preferred by the panalysts, were found to contain high values of macro elements and rare values of micro elements. The EAA: TAA ratio of these two suggested recipes were 1: 1.95 and 1:2.29 for the recipes containing dried shrimp's head and shell, respectively. Their in vitro protein digestibility (IVPD) ranged from 60.44 to 67.68%. The total saturated fatty acids were found lower than the total unsaturated fatty acids in the two suggested recipes. Potato croquettes recipes containing either 5% dried shrimp's shell or head were found of acceptable overall quality (aroma, taste, appearance, texture and color) to the panalists.