ASSESSMENT OF THE NUTRITIONAL AND ANTINUTRITIONAL CONTENTS OF THE LEAVES OF TRIANTHEMA PORTULACASTRUM (L.) PLANT OBTAINED FROM MORE TOWN IN KWARE LOCAL GOVERNMENT AREA OF SOKOTO STATE

L. G. Hassan, S. M. Dangoggo, S. W. Hassan, T. Hashim, K. J. Umar, S. Abdullahi

Abstract


Analysis of nutritional and antinitritional compositions of Trianthema portulacastrum leaves was the objective of this study. The fresh leaves of T. portulacastrum leaves were collected from different farm lands at More town, Kware Local Government Area of Sokoto State. The leaves were dried, pulverized and   analysed for its proximate, amino acids, minerals and antinutritional composition using standard methods of AOAC. The results showed that T. portulacastrum leaves had moisture, ash, crude protein, crude lipid, crude fibre, available carbohydrate and calorific value of 95.51±0.92%, 21.32±0.13%, 21.22±0.8%, 2.32±0.17%, 19.68±0.21%, 59.58±0.17% and 344.08 kcal/100g respectively. The predominant macro-elements (mg/100 g) of the dry sample are: K (1825.00 ±50.00 mg), Na (183.33 ±38.19 mg), Ca (650.80 ±19.65 mg) and Mg (665.27 ±16.44 mg), while P (6.15 ± 0.77 mg) were low. Some microelements such as Fe (10.94 ±1.02 mg), Zn (4.95 ± 0.12 mg), Mn (2.14 ±0.14 mg), Cu (0.61 ±0.04 mg) and Cr (0.34 ±0.05 mg) were also quantified. The amino acid profile indicated that isoleucine, leucine, aromatic amino acids (phenylalanine and tyrosine) and valine were present in sufficient amount when compared to the FAO/WHO/UNU reference value. Sulphur containing amino acids (methionine and cystein), lysine and threonine are first, second and third most limiting amino acids, while glutamic and aspartic acids are the major nonessential amino acids. The level (mg/100 gDW) of phytate (10.14 ± 2.44), HCN (45.36 ± 2.16) and nitrate (0.04 ± 0.01) in the leafy vegetable was low, while that of oxalate (6806.25 ± 590.85) was high. The results signified that if processed, T. portulacastrum leaves could be used as source of nutrients.


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