Abstract
Yam flour was substituted 10, 20 and 40% with defatted and full fat soy flour. The effect of the substitution on the proximate composition, swelling power, solubility, water binding capacity and Brabender visco amylograph cooking properties of the yam flour and acceptability of the cooked paste (amala), were evaluated. Protein contents of the mixtures were 23.0 and 25.5% on substituting 40% full-and defated soy flours for yam flour; ash and crude fibre contents increased while carbohydrate content, swelling power, Brabender paste viscosities decreased with increase in soy flour substitution of yam flour. Colour, texture, taste and overall acceptability of pastes (amala) from the mixed flours were rated lower than that of yam flour. Up to 10% defated and 20% full fat soy flour substitution for yam flour was acceptable for amala.
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References
Asadu LA, Ezumah HC, Akammigbe FO, Nweke FI (1988) Relative changes in the nutrient composition of six cultivars of white yam grown in three ecozones of South Eastern Nigeria. In: Cassava based cropping system research II. Pub. IITA.
FAO (1974) Yam Production Yearbook, Vol. 28. Rome: Food and Agricultural Organization.
Coursey DG (1961) The magnitude and origin of storage losses in Nigerian yams. J Sci Food Agric 12: 574–580.
Adesuyi SA (1971) Curing technique for reducing the incidence of rot in yams. Nigerian Stored Product Research Institute, Technical report, No 9.
Adamson II (1985) The dietary fibre of yam and cassava. In: Advances in yam research. The biochemistry and technology of the yam tuber. Pub. The Biochemical Society of Nigeria.
Sobande AO (1991) Effect of soy fortification on properties and acceptability of yam flour. MSc thesis. Ibadan, Nigeria: Department of Food Technology, Ibadan University.
Ige MT, Akintunde FO (1981) Studies on the local techniques of yam flour production. J Food Technol 16: 303–311.
National Agricultural Extension and Research Liaison Services (NAERLS) (1989) Soybeans in the Nigerian diet. Extension Bull No 21.
Wolf WJ, Cowan JC (1971) Soybean as food source. London: Butterworth.
Joslyn MA (1970) Methods in food analysis, 2nd ed. New York: Academy Press.
AOAC (1975) Methods of Analysis. Washington, DC: Association of Official Analytical Chemists.
Dubois M, Gilles KA, Hamilton JK, Rebers PA, Smith F (1956) Colorimetric method for determination of sugars and related substances. Anal Chem 28: 350–356.
Williams PC, Kuzina FD, Hlynka (1970) A rapid colorimetric method for estimating the amylose content of starches and flour. Cereal Chem 47: 411–415.
Leach HW, McCowen LD, Schoch JT (1959) Structure of the starch granule: swelling and solubility patterns of various starches. Cereal Chem 36: 534–543.
Medcalf DG, Gillies KA (1965) Wheat starches comparison of physicochemical properties. Cereal Chem 42: 558–568.
Edward GM, Thomas JS, Francis EK (1957) Graphical analysis of the Brabender viscosity curves of various starches. Cereal Chem 34: 141–152.
Duncan DB (1955) Multiple range and multiple F tests Biometrics 11: 1–5.
Ogundipe HO (1988) Soybean processing for commercial use: Food crop production, utilization and nutrition. Dotam Publishers.
Aykroyd WR, Doughty J (1982) Legumes in human nutrition. Rome: Food and Agricultural Organization.
Gray VM, Schoch TJ (1962) Effects of surfactants and fatty adjuncts on the swelling and solubilization of granular starches. Starke 14: 239.
Akingbala JO, Gomez WH, Rooney LW, Sweat VE (1988) Thermal properties of sorghum starches. Starch/Starke 40: 375–378.
Akingbala JO (1982) Effect of physicochemical properties of sorghum starch and endosperm on the quality of a traditional African food. PhD dissertation. College Station, TX Texas A & M University.
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Akingbala, J.O., Oguntimein, G.B. & Sobande, A.O. Physico-chemical properties and acceptability of yam flour substituted with soy flour. Plant Food Hum Nutr 48, 73–80 (1995). https://doi.org/10.1007/BF01089202
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DOI: https://doi.org/10.1007/BF01089202