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Agriculturae Conspectus Scientificus, Vol. 81 No. 4, 2016.

Original scientific paper

Preservation of Smoked African Catfish, Clarias gariepinus Burchell against Dermestes maculatus De Geer (Coleoptera: Dermestidae) using Neem Seed Oil-iodized Salt Mixtures

Samuel A. Babarinde orcid id orcid.org/0000-0002-0861-503X ; Department of Crop and Environmental Protection, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
Timothy A. Adebayo ; Department of Crop and Environmental Protection, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
Lamidi A. Usman ; Department of Chemistry, University of Ilorin, Ilorin Nigeria
Oloduowo M. Ameen orcid id orcid.org/0000-0002-0446-4481 ; Department of Chemistry, University of Ilorin, Ilorin Nigeria
Adeyemi O. Akinyemi ; Department of Agronomy, Osun State University, Ejigbo Campus, Osogbo, Nigeria
Olamide T. Onajole ; Department of Crop and Environmental Protection, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
Olusegun Adekale ; Department of Crop and Environmental Protection, Ladoke Akintola University of Technology, Ogbomoso, Nigeria

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Abstract

Dermestes maculatus is a major fish pest causing serious damage when left uncontrolled. This work identifies the fatty acids of Nigeria-obtained neem seed oil (NSO) and the potential of different mixtures of the NSO and iodized salt in the control of the pest. Seven fatty acids: palmitic acid (18.09%), linoleic acid (33.73%), stearic acid (14.37%), oleic acid (13.4%), octadecanoic acid (12.93%), 9, 12–octadecadienoic acid (1.47%) and arachidic acid (3.33%) were identified in the NSO. Percentage of D. maculatus adu1t mortality (100%) observed in fish treated with 0.00 μl NSO + 0.50 mg salt, 100 μl NSO + 0.125 mg salt and 0.00 μl NSO + 0.25 mg salt was significantly (p<0.05) different from mortality observed in untreated fish (31.25%). Percentage of live larvae (0.0%) in fish treated with 0.50 mg salt + 0.00 μl NSO, 100 μl NSO + 0.125 mg salt, 0.00 μ1 NSO + 0.25 mg salt and 50 μl NSO + 0.125 mg salt was lower than 63.97% observed in the control. Percentage of weight loss of untreated (75.10%) and 50 μl NSO-treated fish (69.65%) was significantly higher than values obtained from fish treated with 0.5 mg salt (26.93%), 100 μ1 NSO + 0.125 mg salt (25.73%) and 0.25 mg salt (23.63%). Application of NSO-iodized salt did not change the colour and odour of treated fish. Consumers significantly rejected fish treated with ≥ 50 μl NSO.

Keywords

consumers’ acceptability; Dermestes maculatus; iodized salt; neem seed oil; smoked fish

Hrčak ID:

179450

URI

https://hrcak.srce.hr/179450

Publication date:

7.4.2017.

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