Thesis-1979-Hindi.pdf (3.93 MB)
The recovery of functional protein from fish waste
thesis
posted on 2018-09-19, 13:42 authored by Mazin J. HindiThis research project is concerned with the recovery
of Functional Fish Protein from fish filleting waste
by an extraction method utilising sodium chloride solutions.
It was found that the greatest amount of extracted protein
could be obtained after one hour of extraction time using
4% NaCl as a solvent. The optimum solid-to-liquid ratio was
1:8 and the best particle size was found to be 0.04 cm diameter. The Silverson homogenizer was found to give a
higher protein yield than other extraction apparatuses which
utilise orbital or rotary motions.
It was found that minced fish waste samples stored at -30°C for sixty days did not result in a noticeable deterioration
in protein extractability values. Those values decreased by
about 27% and 60% after seventy days storage at -15°C and 0°C respectively. The protein–saline extract was desalted and concentrated
by means of an ultrafiltration process. The effect of protein concentration, temperature and pH of the feed stream on the flux rate were studied. It was found that the flux rate: (i) decreased as protein concentration rose; (ii) increased
with increasing temperature of solution; (iii) did not change at basic pH, but decreased at acidic pH. The functional properties of the freeze-dried product
were assessed. The characteristics of solubility, coagulation,
foam and emulsification showed that Fish Protein Concentrate was suitable for use as a functional agent in food products.
Funding
Iraq, Ministry for Higher Education and Scientific Research.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
Publisher
© M.J. HindiPublisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
1979Notes
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.Language
- en