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International Journal of Pharmacology, Phytochemistry and Ethnomedicine
Volume 1


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Effects of Cooking and Germination on Physiochemical Properties and Sensory Attributes of African Walnut (Tetracarpidium conophorum)

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Effect of cooking and germination on physiochemical and sensory attributes of African walnut were investigated. Result proved that the protein (14.90%) carbohydrates (15.39%) fat (45.84%) ash (3.5%) and fibre (1.17%) contents of the raw samples were increased by germination but subsequently decreased as germination progresses. Cooking was found to be more effective in reduction of antinutrients than germination thereby leading to enhanced bioavailability of most essential minerals (calcium, magnesium, sodium, phosphorus etc). Results also indicate significant (P<0.05) improvement on the functional properties (water absorption capacity, oil absorption capacity, ) of the raw sample by cooking and germination. Evaluation of sensory attributes showed that cooked walnut was most preferred to germinated and boiled walnut in terms of taste, after taste and general acceptability.


International Journal of Pharmacology, Phytochemistry and Ethnomedicine (Volume 1)
A. Ihemeje et al., "Effects of Cooking and Germination on Physiochemical Properties and Sensory Attributes of African Walnut (Tetracarpidium conophorum)", International Journal of Pharmacology, Phytochemistry and Ethnomedicine, Vol. 1, pp. 93-102, 2015
Online since:
Dec 2015

Adefarati, F.B. (1985).

Ajaiyeoba, E.O. and Fadare, D.A. (2006). Antimicrobial potential of extracts and fractions of the African walnut (Tetracarpidium conophorum) African Journal of Biotechnology . 5 (22): 2322-2326.

Altschul, S.V.R. (1975). Drugs and Foods from little known plants, Harvard University Press, London p.170.

Akpapunam, M.A. & Achinewhu, S.C. (1985). Effect of cooking, germination and fermentation on the chemical composition of Nigeria cowpea (Vigna unguiculata). Plant Food Hum. Nutr. 35, 353-358.

A.O.A.C. (1990). Official Method of Analysis. 15th ed. Association of Official Analytical Chemists, Virginia, U.S. A.

A.O.A.C. (1999). Official Method of Analysis. 16th ed. Association of Official Analysis Chemists Washington D.C. pp.930-935.

Beuchat, L.R. (1977). Functional and Electrophoretic properties of sucinylated peanut flour proteins. J. Agri. and Food Chem. 25: 258-260.

Bingham, S. (1977). Nutrition: A Consumer's Guide to Good Eating, Transworld Publishers, London. p.450.

Change, S.E. and Fuller, H.L. (1964). Effect of Tannic acid Content of grain Sorghum on their feeding value for growing Chick. Poultry Sci. 43: 30-60.

Coffmann, C.N. and Garcia, V.A. (1977). Functional properties of the protein isolate from Mung bean flour. J. Food Tech. 12: 473-478.

DelRosano, R.R. & Flore, D.M. (1981). Functional properties of flour types of mung bean flours. J. Sci. Fd. Agric. 32: 175-180.

Edem, D.O., Ekwere, E.S. and Eke, O.U. (1994). Chemical Evaluation of the Effect of Cooking on the Nutritive value of Cooking on the Nutritive value of Conophor seed (Tetracarpidium Conophorum), Tropical Sci. 34: 377-380.

Eneche, E.H. (2003).

Encyclopedia Americana (1994). Grolier Incorporated International Edition, Vol. 20. P. 575.

Enujiugha, V.N. (2003). Chemical and Functional Characteristics of Conophur Nut. Pakistan J. of Nutrition. 2 (6) : 335-338.

Enujiugha, V.N. and Ayodele -Omi, O. (2003). Evaluation of nutrients and some antinutrients in lesser known under-utilized oil seeds. Int. J. Food Sci. and Tec. 38: 525-528.

Forbes, R.M. and Erdman, J.W. (1983). Bioavailability of tree mineral elements. Annual Review of Nutrition 3: 213-231.

Ford, J.E. and Hewitt, D. (1979).

Giami, S.Y. (2003). Effect of processing on the proximate Composition and Functional Properties of Cowpea (Vigna Ungniculate) flour. Food Chem. 47: 153-158.

Harland, B.F., Oke, O.L. Felix-Phipps, R. (1988). Preliminary studies on the phytate content of Nigerian foods. Journal of Food Composition and Analysis. 1: 202-205.

Hemery, G.E. (2001). Growing Walnut in Mixed Stands. Quarter J. Forestry. 95: 31-36.

Hitchcock, C.L. and Arthur, C. (1979). Flora of the Pacific North West, University of Washington Press, Seatle and London. p.284.

Hutchinson, J. and Dalziel, J.M. (1958). Flora of West Tropical African. Vol. 1, part 2. Crown Agents for Oversea Governments and Administrations, Millbank, London S. w. I. p.410.

Hsu, D.L. Leury, H.K. Finney, P.L. & Morad, M.M. (1980). Effects of germination of the nutritive value and baking properties of dry peas, lentils and faba beans. J. Fd. Sci. 45: 87-90.

Ihemeje, A., Okorie, S.U. and Ekwe, C.C. (2012) Effects of processing methods on the biochemical, functional and antinutritional properties of Afrcian Walnut (Tetracarpidium conophorum). Journal of Biology Science and Bioconservation p.4: 55-64.

Inyang, C.U. & Zakari, U.M. (2008). Effect of Germination and Fermentation of Pearl Millet on Proximate, Chemical and Sensory Properties of Instant Fura,. A Nigerian Cereal Food. Pak. J. Nutr. 7(1): 9-12.

Kinsela, T. and Bezard, J. (1993). Evaluation of lesser known oil seeds. International J. of Food Sci. and Techno. 13 (3) 567-575.

Lonnerdahl, B., Sandberg, A., Sandstrom, B. and Kunz, C. (1989). Inhibitory effects of phytic acid and other Inositolphosphates on zinc and calcium absorption in sucking rats. J. Nutri. 119: 211-214.

Margen, S. (2006). Preservation of African Walnut. Encyclopedia of Food and Nutrition Rebus New York. Pp. 1-2.

Mohammed, R.K. Abuo-Arab, E.A. Gibriel, A.Y., Nagwa M.H. Rasmy, H.M. & Abu-Salem, F.M. (20110. Effect of legume processing treatments individually or in combination on their phytic acid content. African journal of Food Science and Technology 2(2): 036-046.

Mubarak, A.E. (2005). Nutritional composition and antinutritional factors of mung bean seeds (phaseolus aureus) as affected by some home traditional processes. Food Chem. 89: 489-495.

Narayana, N. and Narasinga-Rao, N. (1982). Foundational properties of Raw and Heat Processed wing bean (pseohorcarpus tetragonobbies). J. Food Sci. 47: 1534-1538.

Norris, P.E. (1974). About Nut Dried Fruit. Thompson's Publishers Ltd. Wellingbrough. p.63.

Obizoba, I.C. and Egbuna, H.I. (1992). Effect of germination and fermentation on the nutritional quality of bambara nut (voandeiz subterrance L. Thouars) and its product (milk). Plant foods for Human Nutrition 42(1): 13-23.

Obizoba, I.C., & Nnam, M.N. (1992). The effects of sprouting time on nutritive value of two varities of Africnan yam bean (Sphenostlis stenocarpa). Plant ds. Hum. Nutr. 42: 319-327.

Onwuka, C.F. Ikewuchi, C.C. &, Ikewuchi C.J. & Ayalogu, O.E. (2009).

Oke, O.L. (1967). Chemical Studies on the more Commonly used leaf vegetables in Nigeria. Journal of the West African Science Association. 11 (1 and 2) : 42-48.

Okoye, W.I. and Okobi, A. O (1984). Physical and Chemical parameters of some less known Nigeria oil seeds. Nigeria Stored Product Research Institute, Ilorin. Technical Report No. 12. pp.101-109.

Okoye, W.I., Okobi, A.O. and Okonkwo, U.E. (1986). Extraction and characterization of oils from nine lesser known Nigeria oil seeds. Nigeria Stored Products Research Institute Ilorin. pp.8-10.

Oladokun, M.A.O. (1990). Tree crop based agroforestry in Nigeria; a checklist of crops intercropped with Cocoa. Agroforestry Systems. 11: 227-241.

Ologhobo, A.D. and Fetusa, B.L. (1983). Investigations on the trypsin; hibition, haemagglutinin, phytic and tannic acid contents of cowpea (Vigna unquiculata). Food Chemistry 12: 249-254.

Ologhobo, A. D and Fetuga, B.L. (184). Distribution of phosphorus and phytate in some Nigeria varieties of legumes and some effects of processing. Journal of Food Science. 49: 199-201.

Osagie, A.U. and Okoye, W. I (1986).

Osagie, A.U. Muzqniz, M., Burbano, C., Cuadrado, C., Ayet, G. and Castano, A. (1996). Anti nutritional constituents of ten staple foods grown in Nigeria. Tropical Science. 36: 109-115.

Oyenuga, V.A. (1975). The Nutritional value of conophor seed (Tetracarpidium conophorum). IN proceedings of the Conference on Animal feeds of Tropical and sub-tropical origin. London. pp.161-166.

Osuntokun, B., Monekosso, G.L. and Wilson, J. (1969). Cassava diet and chronic degenerative neuropath: an epidemiological study. Nigeria J. Sci. 3: 3-15.

Pearson, D. (1976). The Chemical Analysis of food 2nd edition. Longman Group Ltd., Edinburgh, London and New York.

Pyenson, L. (1970). Plant Health Hand book., AV1 Publishing Company Inc. West Port, Connecticut. p.197.

Riley, H.P. (1963). Families of flowering plants of Southern African. University ofKentucky Press, Lexcington Kentucky. p.76.

Ros, E. (2006). Health Benefits of Walnuts. Journal of the American College of Cardiology 2006 edition. p.3.

Shukla, P. and Shitalp, C. (1979). An Introduction to Angisperms. Macmillan Publishers. New York. pp.317-325.

Sibbett, S.G. (1994). Edible Tree Nuts, Walnuts. Encyclopedia of Agricultural Science 2: 916.

Thompson, B. (1976). Black Walnut for profit. Timber Press, Forest Grove, p.193.

Thonner, F. (1962). The Flowering Plants of Africa. Wheldon and Wesley Ltd., Codicote. p.309.

Una, V.D. (1973). Gardening with shrubs. Hugh keartland Ltd. Johannes burg. p.160.

Uwaegbute, A.C. Ukegbu, P.O. and Ikpeoha, A. (2012). Effect of germination on cooking, Nutrients composition and organoleptic qualities of African Yam Bean (Spherstyllis stenocarpa). J. Biol., Agric Healthcare 2(8): 28-32.

Willis, J.C. (1973). A Dictionary of the Flowering Plants and Ferns, Seventh ed., Cambridge University Press Cambridge, p.1108.

Yatsumatsu, K., Sawada, K. and Moritake, S. (1972). Whipping and emulsifying properties of Soyabean products Agri. Biol. Chem. 36 (5) 719-727.

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