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Pakistan Journal of Nutrition

Year: 2010 | Volume: 9 | Issue: 4 | Page No.: 368-372
DOI: 10.3923/pjn.2010.368.372
Protein and Amino Acid Compositions of Sphenostylis stenocarpa, Sesamum indicum, Monodora myristica and Afzelia africana Seeds from Nigeria
O.A. Ojiako, C.U. Igwe, N.C. Agha, C.A. Ogbuji and V.A. Onwuliri

Abstract: Flours produced from raw, blanched and boiled seeds of Sphenostylis stenocarpa (African yam bean), Sesamum indicum (Sesame seed), Monodora myristica (Calabash nutmeg) and Afzelia africana (African oak) were evaluated for total protein and amino acid compositions. The results show that the seeds of S. indicum had the highest total protein content (24.74±0.56%) relative to those of S. stenocarpa (18.90±0.35%), M. myristica (12.83±0.40%) and A. africana (9.56±0.12%). The amino acid contents followed the pattern 0.030±0.010 mol/l for S. stenocarpa >0.025±0.005 mol/l for A. africana >0.014±0.003 mol/l for M. myristica >0.010±0.002 mol/l for S. indicum. The seeds were found to be rich in amino acids especially the essential amino acids which relative to the non-essential amino acids had high percentages of 81, 80, 77 and 70% for S. stenocarpa, M. myristica, S. indicum and A. Africana respectively. Boiling significantly (p<0.05) reduced the protein and amino acid contents of all the seeds, while blanching only significantly (p<0.05) reduced the amino acid contents of S. stenocarpa, S. indicum and A. Africana seeds. The results suggest that the seeds are potentially important plant sources of proteins and amino acids especially the essential amino acids necessary for human and livestock nutrition.

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How to cite this article
O.A. Ojiako, C.U. Igwe, N.C. Agha, C.A. Ogbuji and V.A. Onwuliri, 2010. Protein and Amino Acid Compositions of Sphenostylis stenocarpa, Sesamum indicum, Monodora myristica and Afzelia africana Seeds from Nigeria. Pakistan Journal of Nutrition, 9: 368-372.

Keywords: amino acid analyses, African oak, calabash nutmeg, sesame seed and African yam bean

REFERENCES
  • Acland, J.D., 1980. East African Crops: An Introduction to the Production of Field and Plantation Crops in Kenya, Tanzania and Uganda. FAO/Longman Group Ltd., London

  • Asuzu, I.U., 1986. Pharmacological evaluation of the forklore use of Spenostylis stenocarpa. J. Ethnopharmacol., 16: 263-267.
    PubMed    Direct Link    

  • Edem, D.O., C.L. Amugo and O.U. Eka, 1990. Chemical composition of African yam beans. J. Trop. Sci., 30: 59-63.

  • Egbe, I.A. and I.O. Akinyele, 1990. Effect of cooking on the antinutritional factors of lima beans (Phaseolus lunatus). Food Chem., 35: 81-87.
    CrossRef    Direct Link    

  • Fagbemi, T.N. and A.A. Oshodi, 1991. Chemical composition and functional properties of full-fat fluted pumpkin seed flour (Telfairia occidentalis). Nig. Food J., 9: 26-32.

  • James, S.C., 1995. The Analytical Chemistry of Foods. Blackie, London, pp: 20-25

  • Mayhem, S. and A. Penny, 1988. Tropical and Sub-Tropical Foods. Macmillan Publisher Ltd., London, pp: 54

  • Mba, A.U., 1980. Chemical composition of some local sources of protein foods for man. Nig. J. Nutr. Sci., 1: 142-147.

  • Norman, M.J., C.T. Pearson and P.G.E. Scale, 1995. Tropical Food Crops in the Environment. 2nd Edn., Cambridge University Press, Cambridge, UK

  • Odoemelam, S.A., 2005. Proximate composition and selected physicochemical properties of the seeds of African oil bean (Pentaclethra marcrophylla). Pak. J. Nutr., 4: 382-383.
    CrossRef    Direct Link    

  • Ojiako, O.A. and E.I. Akubugwo, 1997. An Introductory Approach to Practical Biochemistry. CRC Publications, Owerri, pp: 132

  • Ojiako, O.A. and C.U. Igwe, 2007. Nutritional and anti-nutritional compositions of Cleome rutidosperma, Lagenaria siceraria and Cucurbita maxima seeds from Nigeria. J. Med. Food, 10: 735-738.
    PubMed    Direct Link    

  • Onwuliri, V.A., I. Attah and J.O. Nwankwo, 2002. Anti-nutritional factors, essential and non-essential fatty acids composition of ugba (Pentaclethra macrophylla) seeds at different stages of processing and fermentation. J. Biol. Sci., 4: 671-675.

  • Oshodi, A.A., 1992. Proximate composition, nutritionally valuable minerals and functional properties of Adenopus breviflorus benth seed flour and protein concentrate. Food Chem., 45: 79-83.
    CrossRef    Direct Link    

  • Pearson, D., 1976. The Chemical Analysis of Foods. 7th Edn., Churchill Livingstone, London, ISBN-13: 9780700014576, pp: 7-11.

  • Sanders, D.H., 1990. Statistics: A Fresh Approach. 4th Edn., McGraw Hill Inc., Singapore, pp: 380-385

  • Ojiako, O.A. and C.U. Igwe, 2008. The nutritive and hepatotoxic properties of Trichosanthes anguina (snake tomato) fruits from Nigeria. Pak. J. Nutr., 7: 85-89.
    CrossRef    Direct Link    

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