African Journal of Biotechnology Vol. 6 (24), pp. 2833-2839, 17 December 2007   

ISSN 1684–5315 © 2007 Academic Journals        

Full Length Research Paper

Nutritional and chemical value of Amaranthus hybridus l. leaves from Afikpo, Nigeria

Akubugwo, I. E.*, Obasi, N. A., Chinyere G. C. and Ugbogu A. E.

Department of Biochemistry, Abia State University, Uturu, Abia State, Nigeria.

*Corresponding author. E-mail: akubugwoei@yahoo.com.

Accepted 25 October, 2007

The nutritional and chemical value of Amaranthus hybridus were investigated using standard analytical methods in order to assess the numerous potential of the plant leaves. The Proximate analysis showed the percentage moisture content, ash content, crude protein, crude lipid, crude fibre and carbohydrate of the leaves as 84.48, 13.80, 17.92, 4.62, 8.61 and 52.18%, respectively while its calorific value is 268.92 Kcal/100 g.  Elemental analysis in mg/100 g (DW) indicated that the leaves contained sodium (7.43), potassium (54.20), calcium (44.15), Magnesium (231.22), Iron (13.58), Zinc (3.80) and phosphorus (34.91). The vitamin composition of the leaves in mg/100 g (DW) was β-carotene (3.29), thiamine (2.75), riboflavin (4.24), niacin (1.54), pyridoxine (2.33), ascorbic acids (25.40) and α-tocopherol (0.50). Seventeen amino acids (isoleucine, leucine, lysine, methionine, cysteine, phenylalmine, tyrosine, threonine, valine, alanine, arginine, aspartic acid, glutamic acid, glycine, histidine, proline and serine) were detected. The chemical composition in mg/100 g (DW) for alkaloid, flavonoid, saponin, tannins, phenols, hydrocyanic acid and phytic acid were 3.54, 0.83, 1.68, 0.49, 0.35, 16.99 and 1.32, respectively. Comparing the nutrient and chemical constituents with recommended dietary allowance (RDA) values, the results reveal that the leaves contain an appreciable amount of nutrients, minerals, vitamins, amino acids and phytochemicals and low levels of toxicants.

Key words: Amaranthus hybridus L. leaves, diet, minerals, vitamins, amino acids, phytochemicals.