CHARACTERIZATION OF THE NILE TILAPIA (SAROTHERODON NILOTICUS) VISCERA WASTE (DREGS)

Authors

  • F.A. S. MOTA
  • J.T. C. FILHO
  • G. A. BARRETO

DOI:

https://doi.org/10.52292/j.laar.2017.312

Keywords:

Nile Tilapia, Viscera, Bladder, Oil, Dreg

Abstract

In this work the characterization of the Nile Tilapia viscera was performed. To do this, the oil (lipids) and the dreg (protein) were extracted. Acidity parameters were evaluated in the presence and absence of biliary juice. The other byproduct analyzed, dreg (protein), was evaluated in terms of its potential use as a raw material in the production of biofertilizers. The evaluation showed a high moisture value for the dreg, approximately 95%, a protein mean of 2.34% and an ash percentage of 1.0%. The C/N ratio was assessed at 22:1. In the evaluation of the biliary juice, the percentage increase of the acidity in the oil showed significant changes ranging from 5% to 10%, around 8.72% to 16.92% of the reference value, represented in this case by the extracted oil in the absence of the bile. When the percentage increase reached between 20% and 40%, the oil presents the greatest variations in its final acidity, 28.92% and 51.94%, respectively. Thus, this study is significant in assisting with the processing of Tilapia viscera.

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Published

2017-10-31

Issue

Vol. 47 No. 4 (2017): Latin American Applied Research

Section

Applied Chemistry

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