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Article
Publication date: 1 January 2006

S.B. Fasoyiro, S.R. Ajibade, A.J. Omole, O.N. Adeniyan and E.O. Farinde

African yam bean (Sphenotylis stenocarpa), bambara groundnut (Vigna subterranean), pigeon pea (Cajanus cajan) and lima bean (Phaseolus luunatus) are some of the minor grain…

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Abstract

Purpose

African yam bean (Sphenotylis stenocarpa), bambara groundnut (Vigna subterranean), pigeon pea (Cajanus cajan) and lima bean (Phaseolus luunatus) are some of the minor grain legumes found in Nigeria. Their utilization has been very limiting because little is known about their nutritive value. The proximate, minerals and antinutritional factors of two collections of African yam bean, lima beans and pigeon pea, and one collection of bambara groundnut seeds grown in south‐western Nigeria were studied.

Design/methodology/approach

Dry seeds of two collections of African yam bean, pigeon pea and lima beans, and a collection of bambara groundnut were collected from Oyo and Ondo States in south‐western Nigeria. The legumes were sorted, milled and stored in polythene bags at 4°C.

Findings

The crude protein in the legumes was in the range of 22–37 per cent, crude fat 1.47–4.96 per cent, crude fibre 1.92–7.21 per cent and ash 3.33–5.61 per cent. K, Ca and P were in the range of 0.15–0.52 per cent. Iron content of the seeds was very low. The antinutrients, tannin, phytic acid and trypsin inhibitor were very high when compared to those of cowpea, groundnut and soybean.

Originality/value

It therefore implies that consumption of these legumes will require processes that will reduce their antinutritional factors.

Details

Nutrition & Food Science, vol. 36 no. 1
Type: Research Article
ISSN: 0034-6659

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Article
Publication date: 22 May 2009

S.R. Akande and M.O. Balogun

The purpose of this paper is to characterize 25 collections of pigeon pea from south‐west Nigeria using nutritional and anti‐nutritional contents of the seeds.

582

Abstract

Purpose

The purpose of this paper is to characterize 25 collections of pigeon pea from south‐west Nigeria using nutritional and anti‐nutritional contents of the seeds.

Design/methodology/approach

The nutritional and anti‐nutritional constituents of 25 collections of pigeon pea were determined. Data collected were subjected to correlation, principal components and fastclus analyses.

Findings

Ariation among the collections for the nutrient contents was low. Trypsin inhibitor content had the highest variability ranging between 21.74 and 35.43 Tiu/mg. Protein and trypsin inhibitor contents were significant and negatively correlated. The first three principal components explained 74.0 per cent of the total variation. Fastclus procedures grouped the collections into three. Members of cluster 1 had the highest value for protein and the lowest concentrations of the anti‐nutritional factors (ANFs). Cluster 2 possessed relatively low protein with high level of ANFs while cluster 3 was intermediate between clusters 1 and 2 for most characters.

Originality/value

The results indicate that members of cluster 1 with high protein and low levels of ANFs are good candidates in breeding/selecting pigeon pea cultivars with enhanced nutritional values.

Details

Nutrition & Food Science, vol. 39 no. 3
Type: Research Article
ISSN: 0034-6659

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Article
Publication date: 23 October 2020

Ayokunle Olumuyiwa Omobowale, Olufikayo Kunle Oyelade, Mofeyisara Oluwatoyin Omobowale and Olugbenga Samuel Falase

The index case of COVID-19 in Nigeria was reported on 27 February 2020. Subsequently, the exponential increase in cases has brought about the partial and total lockdown of cities…

990

Abstract

Purpose

The index case of COVID-19 in Nigeria was reported on 27 February 2020. Subsequently, the exponential increase in cases has brought about the partial and total lockdown of cities, the closure of all schools and the shutdown of government offices in order to curtail the spread of COVID-19. COVID-19 and its subsequent drastic curtailment policies have implications on vulnerable groups, especially, informal workers who constitute about 70% of the active working population in Nigeria. This reflective discourse critically engages the plight of informal workers in the context of the COVID-19 pandemic in Nigeria.

Design/methodology/approach

The research was guided by the epistemology of pandemic interpretationism. It engages contextual reflections of the plight of economically vulnerable informal workers in Nigeria. Data were collected from secondary sources while rapid case studies were conducted with ten informal workers in Lagos and Ibadan. Afterwards, data were contextually analysed.

Findings

Economically vulnerable informal workers in Nigeria have contextually interpreted COVID-19 as an elite disease, imported into Nigeria by the wealthy. In addition, the mass population views COVID-19 containment measures such as lockdowns, movement restrictions and stay-at-home orders as elitist policies, which are aimed at protecting the wealthy and frustrating the poor and economically vulnerable who live on the fringes of poverty. Many informal workers have slipped below the poverty line while struggling to supply livelihood needs, as they were unable to earn daily income and cannot access palliatives. Consequently, they are of the opinion that “Hunger Virus is deadlier than Corona Virus”.

Originality/value

This paper is a contextual reflection on the plight of economically vulnerable informal workers during the COVID-19 pandemic lockdown and movement restrictions in Nigeria. It presents pandemic interpretationism as an epistemological guide and reflectively examines the poverty impact of COVID-19 on the Nigerian informal sector via contextual analyses of secondary data and rapid case studies. The paper uncovers various COVID-19 livelihood experiences and the responses of the informal workers; furthermore, it provides policy recommendations.

Details

International Journal of Sociology and Social Policy, vol. 40 no. 9/10
Type: Research Article
ISSN: 0144-333X

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Article
Publication date: 4 August 2022

Rusya Iryanti Yahaya, Norihan Md Arifin, Ioan Pop, Fadzilah Md Ali and Siti Suzilliana Putri Mohamed Isa

This paper aims to study the stagnation point flow of Al2O3–Cu/H2O hybrid nanofluid over a radially shrinking disk with the imposition of the magnetic field, viscous-Ohmic…

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Abstract

Purpose

This paper aims to study the stagnation point flow of Al2O3–Cu/H2O hybrid nanofluid over a radially shrinking disk with the imposition of the magnetic field, viscous-Ohmic dissipation and convective boundary condition.

Design/methodology/approach

Similarity variables are introduced and used in reducing the governing partial differential equations into a system of ordinary differential equations. A built-in bvp4c solver in MATLAB is then used in the computation of the numerical solutions for equations (7) and (8) subject to the boundary conditions (9). Then, the behavior of the flow and thermal fields of the hybrid nanofluid, with various values of controlling parameters, are analyzed.

Findings

The steady flow problem resulted in multiple (dual) solutions. A stability analysis performed to identify the stable solution applicable in practice revealed that the first solution is stable while the second solution is unstable. The skin friction coefficient and Nusselt number of the hybrid nanofluid are found to be greater than the Al2O3–H2O nanofluid. Thus, the hybrid nanofluid has a better heat transfer performance than the nanofluid. Besides that, the presence of the magnetic field, suction, convective boundary condition and the enhancement of nanoparticle volume fraction of Cu augments the skin friction coefficient and Nusselt number of the hybrid nanofluid. Meanwhile, the presence of viscous-Ohmic dissipation reduces the heat transfer performance of the fluid.

Originality/value

To the best of the authors’ knowledge, the present results are original and new for the study of the flow and heat transfer of Al2O3–Cu/H2O hybrid nanofluid past a permeable radially shrinking disk. Considerable efforts have been directed toward the study of the boundary layer flow and heat transfer over stretching/shrinking surfaces and disks because of its numerous industrial applications, such as electronic, power, manufacturing, aerospace and transportation industries. Common heat transfer fluids such as water, alumina, cuprum and engine oil have limited heat transfer capabilities due to their low heat transfer properties. In contrast, metals have higher thermal conductivities than these fluids. Therefore, it is desirable to combine the two substances to produce a heat transfer medium that behaves like a fluid but has higher heat transfer properties.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 33 no. 2
Type: Research Article
ISSN: 0961-5539

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