Nutrient composition, mineral content and the solubility of the proteins of palm weevil, Rhynchophorus phoenicis f. (Coleoptera: Curculionidae)

Adult (ADS) and larva stages of palm weevil Rhynchophorus phoenicis were analyzed for their nutritional potentials using proximate and mineral contents as indices. The early larva stage (ELS) contains the highest moisture content of 11.94% while ADS has the least value of 4.79%. The late larva stage...

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Bibliographic Details
Published inJournal of Zhejiang University. B. Science Vol. 8; no. 5; pp. 318 - 322
Main Authors Omotoso, O T, Adedire, C O
Format Journal Article
LanguageEnglish
Published China Springer Nature B.V 01.05.2007
Department of Zoology, University of Ado-Ekiti, P.M.B. 5363, Ado-Ekiti, Nigeria%Department of Biology, Federal University of Technology, P.M.B. 704, Akure, Nigeria
Zhejiang University Press
Subjects
Animal Sciences
Animals
Coleoptera
Coleoptera - chemistry
Curculionidae
Food - classification
Food Analysis - methods
Minerals - analysis
Moisture content
Proteins - analysis
Proteins - chemistry
Rhynchophorus
Solubility
Water - analysis
Rhynchophorus phoenicis
Proximate composition
Late larva
Mineral analysis
Early larva
Solubility
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Summary:Adult (ADS) and larva stages of palm weevil Rhynchophorus phoenicis were analyzed for their nutritional potentials using proximate and mineral contents as indices. The early larva stage (ELS) contains the highest moisture content of 11.94% while ADS has the least value of 4.79%. The late larva stage (LLS) has the highest protein content of 10.51% while ADS contains 8.43%. Ash content is highest in ELS with a value of 2.37% and lowest in ADS with a value of 1.43%. ELS and LLS have the highest (22.14%) and lowest (17.22%) fibre contents respectively. The values of potassium, magnesium and iron in ELS were (455.00+/-21.21), (60.69+/-2.57) and (6.50+/-3.40) mg/kg while LLS recorded (457.50+/-10.61), (43.52+/-1.37) and (6.00+/-1.10) mg/kg and ADS recorded (372.50+/-24.75), (53.31+/-1.88) and (22.90+/-3.70) mg/kg. Chromium, phosphorus, nickel, calcium, lead, manganese and zinc were also detected. Copper was not detected in any of the samples. In all the developmental stages the protein solubilities were pH dependent with the minimum protein solubilities occurring at acidic pH while the maximum protein solubilities occurred at alkaline pH.
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ISSN:1673-1581
1862-1783
DOI:10.1631/jzus.2007.B0318