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Effects of Drying Methods on Nutrient Contents of Moringa Oleifera (LAM.) Leaves

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Effects of Drying Methods on Nutrient Contents of Moringa Oleifera (LAM.) Leaves.

Abstract

The study was carried out to determine the effect of drying methods on the nutrient contents of Moringa oleifera at the Agric.

Chemical Laboratory (Usmanu Danfodiyo University Sokoto) and the Energy Research Field of Sokoto Energy Center, Sokoto.

Fresh leaves were collected and cleaned then dried using different drying methods viz. Shade drying, solar drying, oven drying and sun drying.

The treatments were analyzed for proximate and mineral contents using standard methods. Statistical analysis indicates that moisture was lowest in solar drying (2.67%).

Shade drying produces the lowest lipid content (2.33%). High protein content was recorded under shade drying (28.50%).

Overall, shade drying was noted to preserve the nutrient contents of Moringa oleifera better.

In view of the economic importance of Moringa, there is a need to educate the local populace on the best method of preserving this vegetable.

Introduction

Moringa oliefera Lam. Commonly referred to simply as “Moringa” belongs to the kingdom Plantae, Order Brassicales, Family Moringacacae, Genus Moringa, and Species Moringa oliefera.

Moringa oliefera is native to the Indian subcontinent and has become naturalized in the tropical and subtropical areas of the world.

It is the most widely cultivated species of the Genus Moringa, which is the only genus in the Family Moringacacae.

It is an exceptionally nutritious vegetable tree with a variety of potential uses.

Moringa oliefera trees are well naturalized in the northern parts of Nigeria where the leaves are popularly known as ‘zogala’ and widely consumed by the populace (Pallavi and Dipika, 2010).

The plant is described as a  fast-growing plant and drought-resistant crop variety. It can survive in less fertile soil (Fahey, 2005, Anwar et al., 2007).

The tree itself is rather slender, with drooping branches that grow to approximately 10-12m in height. The “moringa” tree is grown mainly in semi-arid, tropical, and subtropical areas.

References

Adejumo, B. A. (2014). Annuals. Food science and technology 15(2):246-249.
Ademoroti, C. A. M. (1996) Environmental Chemistry and Toxicology Foludex press Ltd, Ibadan, Pp. 111-117.
Adeyeye, E.l., Otokiti M.K.O. (1999). Proximate composition  and some nutritionally valuable minerals of two varieties of  Capsicum annum (Bell and cherry peppers). Discovery innovation, 11: 75-81.
Amedorme, S.K., Apodi, J. and gbezudor, K.A. (2013). Design and construction of forced convection indirect solar dryer for drying Moringa leaves. Scholars Journal of Engineering and Technology, 1(3):91-97.
Anjorin, T.S., lkokoh P., Okolo S. (2010). Mineral composition of Moringa oleifera leaves, pods and seeds from two regions in Abuja, Nigeria. International Journal of Agric Biol., 12: 431- 434.
Anwar, F. and Bhanger, M.I. (2003). Analytical characterization of Moringa oleifera seed oil grown in temperate regions of Pakistan. Journal of Agricultural and Food Chemistry 51:6558-6563.

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