The leaves and seeds of Crotalaria retusa were evaluated for the proximate, mineral and anti-nutritional contents in a completely randomized design. Atomic absorption spectrometry was used in determination of the seeds and leaves for phosphorus, potassium, magnesium, calcium and iron. Anti-nutritional factors (ANFs) including tannin, oxalate and phytate were also determined using appropriate technique. The result of proximate analysis indicated that leaves and seeds had high crude protein (18.00% and 14.63%), dry matter (94.78% and 90.98%), Ash (7.00% and 8.02%), crude fiber for both leaves (12.75%) and seed (28.44%) and the ether extract was (4.60%) and (5.03%) for leaves and seeds respectively. Mineral analysis indicated the Crotalaria retusa leave and seeds contained some essential mineral such as %P (0.37%) leave and (0.47%) seeds, %K (0.97%, 0.68%), %Mg (0.48%, 0.64%), %Ca (0.58%, 0.78%) and Fe (76.10 mg/kg) for leaves and (70.10 mg/kg) seeds of Crotalaria retusa. The leaves and seeds of Crotalaria retusa had low concentration of anti-nutrient factors; phytate (0.01%) leave and (0.06%) seed, oxalate (0.07%) leave and (0.09%) seed, tannin contents were (0.02%) and (0.05%) for leaves and seeds respectively. The overall results suggested that Crotalaria retusa leaves and seeds were of high nutritionally quality due to high protein and mineral contents with low presence of anti-nutritional factors.
Cite this paper
Alalade, J. A. , Akinlade, J. A. , Akingbade, A. A. , Emiola, C. B. and Adebisi, I. A. (2019). Proximate Composition and Phytochemical Screenings of Crotalaria retusa Leaves and Seeds. Open Access Library Journal, 6, e5058. doi: http://dx.doi.org/10.4236/oalib.1105058.
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