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|Title: ||The chemical composition of Haplochromis spp.|
|Authors: ||Ssali, William M.|
|Issue Date: ||1981|
|Publisher: ||© W.M. Ssali|
|Abstract: ||The Haplochromis genus constitutes about 80% by weight of the
fish in Lake Victoria yet only small amounts are utilised directly
for food. There are over 150 species of Haplochromis, in the lake
forming a species flock and any typical catch is made up of a
mixture of many species. Morphological resemblance of the species
makes identification of individual species very difficult. Little
information has been published about the chemical composition of
The present study provides chemical composition data for lipid, protein and other nutritionally important constituents of Haplochromis
as an aid to the processing of the resource and its nutritional
Four batches of Haplochromis from Lake Victoria were received.
The first batch was analysed only for total lipid. Fish from the
other three batches, caught over a five month period, were each
split into four weight groups. Data were obtained for the weight
distribution in the batches., the relationship between weight and
length of the fish, weight and maximum depth of the fish and for the
proportions of head, gut and headless gutless portions in the
different weight groups.
Total lipid determinations were carried out on the head, gut
and headless, gutless portions for all four groups for each batch.
On average 54% of the total lipid in the whole fish was present in
the head, 19% in the gut and 27% in the headless, gutless portion.
Small variations were found in the total lipid .content and distribution
between size groups and batches, although on average the whole fish
contained about 6% total lipid.
Analyses for the lipid fatty acids profile, crude protein, true
protein, amino acid profile, ash, calcium, vitamin A and moisture were
carried out on the head, gut, fillet and residue for the major group
and on the whole fish for other groups.
Processing and nutritional implications of the results are discussed .
The results generally indicate that for practical processing purposes
the species flock may be treated as a single species.|
|Description: ||A Masters Thesis. Submitted in partial fulfilment of the requirements for the award of Master of Philosophy of Loughborough University.|
|Appears in Collections:||MPhil Theses (Chemical Engineering)|
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