Amino-acid and biochemical composition of whole body and molt of the Indian white shrimp

Abstract

The amino acid and biochemical composition of molt (exuvia) and whole body
of the shrimp, Fenneropenaeus indicus were analysed along with morphometric
relations. The wet weight of exuvia (0.22 ± 0.07 g) is nearly 4.8% of the whole
shrimp weight (4.50 ± 1.42 g). The goodness fit statistics R2 revealed highly
significant relationship in weights of wet exuvia- wet shrimp, dry exuvia- wet
shrimp and dry exuvia- dry shrimp with values 0.90, 0.89 and 0.88, respectively
indicating that more than 88% of variation of the data explained by the
models. The crude protein and crude fat contents of whole shrimp expressed
on dry matter basis were 3-5 times higher than those found in exuvia. However,
the exuvia of the shrimp had more than twice the dry matter and about
four times ash contents when compared to that of whole shrimp body. The
amino-acid composition of the whole shrimp body and the exuvia expressed on
dry matter basis were 63.37 and 11.94 per cent, respectively. Glutamic acid,
leucine and aspartic acids in the whole shrimp and glutamic acid, glycine and
alanine in the exuvia were the predominant amino acids.