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Proximate composition and
cholesterol concentrations of Rhynchophorus phoenicis
and Oryctes monoceros larvae subjected to different
heat treatments
J. K. Edijala, O. Egbogbo
and A. A. Anigboro*
Department
of Biochemistry, Delta State University, P.M.B. 1, Abraka,
Nigeria.
*Corresponding author. E-mail:
akposanigboro@yahoo.co.uk.
Accepted
20 March, 2009 |
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The proximate composition and cholesterol concentrations of
Rhynchophorus phoenicis and Oryctes monoceros
larvae subjected to different heat treatments were
determined. For both R. phoenicis and O. monoceros,
lipid and cholesterol contents were significantly lower in
the smoke-dried samples (P < 0.05) compared to the raw
samples. The cholesterol levels in R. phoenicis were
as high as 500.90 and 514.63 mg/100g dry weight basis (DWB)
for raw and fried samples, respectively, but decreased to
295.20 mg/100 g DWB in the smoke-dried samples. Similarly,
the cholesterol levels in O. monoceros were 223.50,
245.46 and 45.05 mg/100 g DWB for raw, fried and smoke-dried
samples, respectively. On the other hand, there was no
significant difference (P > 0.05) in the ash, protein and
carbohydrate contents in the heat-treated samples of both
larvae except for moisture which decreased significantly (P
< 0.05) in the fried samples. The high protein, oil and ash
levels of the larvae indicate that they are good sources of
these nutrients.
Key
words:
Rhynchophorus phoenicis, Oryctes monoceros,
proximate composition, cholesterol, heat treatment. |
