American Journal of Life Sciences
Volume 4, Issue 6, December 2016, Pages: 181-186
Received: Oct. 7, 2016;
Accepted: Oct. 26, 2016;
Published: Dec. 12, 2016
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Joseph Shian Alakali, Department of Food Science and Technology, University of Agriculture Makurdi, Nigeria
Ignatius Chukwuemeka Alaka, Department of Food Science and Technology, Ebonyi State University, Abakaliki, Nigeria
Patience Dooshima Nomji, Department of Food Science and Technology, University of Agriculture Makurdi, Nigeria
The insecticidal effect of four biomaterials namely, Garlic (Al. sativum), Ginger (Zingiber officinale), Black pepper (Piper guineese L.) and Lemon grass (Cymbopogon citrates Staph) leaf powders, applied at 10% and 5% concentration on Cowpea grains against the Cowpea weevils (Callosobruchus maculatus fab.) were evaluated after 42 days. Their effectiveness at both dosages on proximate composition, grain damage, progeny development, grain loss and frass weight were determined. Use of the biomaterials showed good retention of some nutrients like protein and fat and did not adversely affect the other nutritional parameters. The carbohydrate values of treated samples were slightly lower (54.47 – 58.55%) for 10% and (54.56 – 59.53) for 5%. than the control (60.83 – 61.24). There was no significant difference (p ≤ 0.05) in the ash contents among biomaterials. The biomaterials showed effective control of cowpea seed damage, weevil perforation index, progeny development, and weight loss and frass weight. These effects were more at 10% concentration than at 5%. Their efficacy in order of effectiveness are as follows black pepper > ginger > garlic > lemon grass. The biomaterials, especially black pepper and ginger are good alternative to the use of chemicals for preservation of cowpea.
Joseph Shian Alakali,
Ignatius Chukwuemeka Alaka,
Patience Dooshima Nomji,
Effect of Biomaterial Treatments on the Storage Stability and Quality of Cowpea, American Journal of Life Sciences.
Vol. 4, No. 6,
2016, pp. 181-186.
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