| Nutrient composition, mineral content and the solubility of the proteins of palm weevil, Rhynchophorus phoenicis f. （Coleoptera： Curculionidae） |
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| 作者姓名： | Omotoso OT Adedire CO |
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| 作者单位： | 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 |
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| 摘 要： | 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, man- ganese 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 solu- bilities occurred at alkaline pH.
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| 关 键 词： | 棕榈象鼻虫 蛋白质 营养成分 矿物质含量 溶解度 |
| 收稿时间： | 2007-01-03 |
| 修稿时间： | 2007-03-05 |
Nutrient composition,mineral content and the solubility of the proteins of palm weevil, <Emphasis Type="Italic">Rhynchophorus phoenicis</Emphasis> f. (Coleoptera: Curculionidae) |
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| Omotoso OT,Adedire CO.Nutrient composition,mineral content and the solubility of the proteins of palm weevil, Rhynchophorus phoenicis f. (Coleoptera: Curculionidae)[J].Journal of Zhejiang University Science,2007,8(5):318-322. |
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| Authors: | Omotoso O T Adedire C O |
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| Institution: | (1) Department of Zoology, University of Ado-Ekiti, P.M.B. 5363, Ado-Ekiti, Nigeria;(2) Department of Biology, Federal University of Technology, P.M.B. 704, Akure, Nigeria |
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| Abstract: | 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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| Keywords: | Rhynchophorus phoenicis Proximate composition Mineral analysis Solubility Early larva Late larva |
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