Nutrient composition of cowpeas infested with Callosobruchus Maculatus L. in Zaria.

Abstract

Nutrient composition of cowpeas infested withCallosobruchus Maculatus L. in Zaria.Cowpeas infested with Callosobruchus maculatus, in Zaria were analysed using standard biochemical methods.The analysis was to determine the effect of Callosobruchus maculatus on cowpeas at various stages of infestation. Four varieties "Kannanado", Local brown, "Dan Borno" and IAR-48 were used. Results show significant decrease in moisture with increase in infestation in all the varieties except for 'Kannanado', this was also the case in carbohydrate content for all the varieties used (p < 0.05). The carbohydrate content ( lowest was 10.3%) for uninfested " Dan Borno" while the infested IAR-48 had the highest (12.4%) Slightly infested seed had the highest moisture content (12.0%) while uninfested cowpeas had lowest moisture (5.8%). A trend of increase ABSTRACT in protein content with severity of infestation was observed in the varieties used, though I.A.R. 48 deviated from this pattern (p < 0.05). Uninfested "Dan Borno" had the lowest protein content (1.4 %) and IAR-48 the highest (1.7 %). Lowest lipid content was found in slightly infested seeds ( 15.6 %) and the highest (22.6 %) for the severely infested. A significant increase in lipid and ash contents of the cowpeas with increase in severity of infestation was observed in all the varieties (p < 0.05).The damage caused by C. maculatus to all varieties of cowpea analysed did not significantly affect their nutrient composition though they attract less market value than uninfested varieties.

Evaluation of Some Botanicals, Thermal Treatment and Packing Materials Against Pulse Beetle Callosobruchus chinensis L. in Chickpea

“…Also, there is insignificant effect of PP and LD packing on protein content. The results are similar to the studies conducted by Mbah and Silas (2007) which reported an increase in protein contents with severity of infestation.…”

“…It was further observed there was little increase of true constituents in the treated samples also, which may be due to hidden infestation. A similar trend was observed by Hamdi et al (2017), Bamaiyi et al (2006) and Mbah and Silas (2007) that protein, moisture and ash contents increased in infested seeds of cowpea. Thermal treatment (T 5 ) i.e.…”

First report on the susceptibility of certain dry Egyptian common bean (Phaseolus vulgaris L.) (Fabaceae) varieties to infestation by Acanthoscelides obtectus (Say, 1831) (Coleoptera: Chrysomelidae: Bruchinae)

“…The chemical composition of dry common bean seeds infested with A. obtectus showed an increase in protein and fibre contents and a decrease in moisture, carbohydrate and fat contents for all varieties. This was in agreement with the findings of MBAH & SILAS (2007), who reported an increase in protein in cowpeas infested with Callosobruchus maculatus (FABRICIUS, 1775). The increase may be attributed to the presence of the pest's eggs, egg cases and excreta.…”

“…Moreover, the reduction in fat and carbohydrate contents was not solely dependent upon the development of progeny but depended on other factors, including varietal resistance and insect preference. It has been reported that storage pests cause considerable quantitative as well as qualitative losses, ultimately leading to a deterioration in nutritional value (NEETHIRAJAN et al 2007); in addition, the decrease in moisture content obtained in this study may be linked to the metabolic activities of seeds (MBAH & SILAS 2007). Generally, changes in the chemical composition of dry common bean seeds infested with A. obtectus were inconsistent, with increases in some of the nutritional components (protein and fibre contents) and decreases in others (moisture, carbohydrate and fat contents).…”

Suppression of Seed Beetle (<i>Callosobruchus maculatus</i>) Population with Root Bark Powder of <i>Zanthoxylum Zanthoxyloides</i> (Lam.) Waterm. (Rutaceae) on Cowpea (<i>Vigna unguiculata</i> (L.) Walp

“…Most often the seeds and pods of cowpea are boiled and eaten as vegetable or are consumed after cooking to provide protein and several vitamins and minerals while the leaves or stems serve as fodder for livestock feeding. In Nigeria, cowpea is consumed in the form of bean pudding, bean cake, baked beans, fried beans, bean soup among others (Mbah and Silas, 2007). High protein contents and lysine contents make cowpea a natural supplement to staple diets of cereals, roots and tubers commonly grown in many poor countries (Adekola and Oluleye, 2007).…”