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Biochemical Components and Other Characteristics of Maturing Pods of Vegetable Cowpea (Vigna unguiculata)

Published online by Cambridge University Press:  03 October 2008

Olusola Omueti ,
O. A. Ojomo ,
O. Ogunyanwo  and
S. Olafare
Olusola Omueti
Affiliation:
Institute of Agricultural Research and Training, Moor Plantation, PMB 5029, Ibadan, Nigeria
O. A. Ojomo
Affiliation:
Institute of Agricultural Research and Training, Moor Plantation, PMB 5029, Ibadan, Nigeria
O. Ogunyanwo
Affiliation:
Institute of Agricultural Research and Training, Moor Plantation, PMB 5029, Ibadan, Nigeria
S. Olafare
Affiliation:
Institute of Agricultural Research and Training, Moor Plantation, PMB 5029, Ibadan, Nigeria
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Summary

Pods of vegetable cowpea Vigna unguiculata Walp. cv. Dinner were harvested at various developmental stages and their biochemical components and other characteristics analysed in two years. Pod length, percentage dry matter and starch, fresh and dry weights and total yield of sugar and starch per unit area increased with age. The percentage total yield of sugars was greatest in pods aged between 11 and 13 days. Vitamin C, total acidity, crude fibre and crude protein percentage decreased with age. Content of minerals except iron also decreased with age of pods. Magnesium, phosphorus, potassium, manganese and copper contents were greater in 1977 than in 1979 but iron and calcium contents were smaller. The vegetable cowpea pods were a rich source of calcium, magnesium, potassium and iron. Pods harvested between 7 and 10 days after flowering were crisply tasty and high in nutrients and therefore nutritionally the most acceptable for consumption.

Type
Research Article
Information
Experimental Agriculture , Volume 22 , Issue 1 , January 1986 , pp. 25 - 32
Copyright
Copyright © Cambridge University Press 1986

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References

REFERENCES

AOAC (1970). Association of Official Analytical Chemists. Methods of Analysis. Washington, D.C.: AOAC.Google Scholar
Anonymous (1971). Information Paper on the Recommendation of Cowpea var. Dinner. Nigeria: Federal Department of Agricultural Research (now National Cereals Research Institute of Nigeria).Google Scholar
Anonymous (1981). The Winged Bean: A High-protein Crop for the Tropics. BOSTID Report (second edition). Washington, D.C.: National Research Council.Google Scholar
Antonio, O. & Adeyokunnu, T. O. (1973). The changing patterns of African diets in relation to income. Nigerian Agricultural Journal 10:27–42.Google Scholar
Aykroyd, W. R. & Doughty, J. (1964). Legumes in Human Nutrition. FAO Nutritional Studies No. 19. Rome, Italy: FAO.Google Scholar
Bennet, E. (1944). Ratio of soluble sugars, pectic materials and hemi-cellulose to nitrogen-free extracts of some common vegetables. Food Research 1:462–464.CrossRefGoogle Scholar
Clegg, K. M. (1956). The application of the anthrone reagent to the estimation of starch in cereals. Journal of the Science of Food and Agriculture 7:40–44.CrossRefGoogle Scholar
Culpepper, C. W. (1936). Effect of stage of maturity of the snap bean on its composition and use as a food product Food Research 1:357–376.CrossRefGoogle Scholar
Deanon, J. R. & Soriano, J. M. (1967). The Legumes. In Vegetable Production in South East Asia, 66–91 (Eds Knott, J. E. & Deanon, J. R. Jr). Philippines: University of Philippines Press.Google Scholar
Del Rosario, R. R, Lozano, Y. & Noel, M. G. (1981). The chemical and biochemical composition of legume seed 2. Cowpea. Philippine Agriculturist 64:49–57.Google Scholar
Dolvo, F. E., Williams, C. E. & Zoaka, L. (1976). Cowpeas - Home preparation and use in West Africa. In International Development Research (Ed. Graham, M.). Ottawa: IDRC - 055e.Google Scholar
Fung, A. C., Lopez, A. & Cooler, F. W. (1978). Essential elements in fresh and frozen spinach and collards. Journal of Food Science 43:897–903.CrossRefGoogle Scholar
Gardiner, K. D. & Prendiville, M. D. (1970). Seed percentage, seed length and shear press values in the evaluation of quality and maturity in French beans. Journal of Horticultural Science 45:303–314.CrossRefGoogle Scholar
Harris, R. S. (1975). Effects of agricultural practices on foods of plant origin. In Nutritional Evaluation of Food Processing, 33–57 (Eds Harris, R. & Karmas, E.). Westport, Connecticut: Avi.Google Scholar
Oke, O. L (1967). Chemical studies on some Nigerian pulses. West African Journal of Biological and Applied Chemistry 9:52–55.Google Scholar
Omueti, Olusola (1982). Effects of age on the elemental nutrients of Celosia cultivars. Experimental Agriculture 18:89–92.CrossRefGoogle Scholar
Oyenuga, V. A. (1968). In Nigeria's Foods and Feeding Stuffs: Value (third edition). Ibadan, Nigeria: Ibadan University Press.Google Scholar
Pearson, D. (1975). Laboratory Techniques in Foods and Feeding Stuffs. London: Butterworths.Google Scholar
Rizley, N. F. & Sistrunk, W. A. (1979). Effects of maturity, soaking treatment and cooking method on quality and mineral content of southern peas. Journal of Food Science 44:220–221.CrossRefGoogle Scholar
Sai, F. A. (1965). Nutritional value of West African fruits and vegetables. In Fruits and Vegetables in West Africa (Ed. Tindall, H. D.). Rome: FAO.Google Scholar
Umoh, L. B. & Bassir, O. (1977). Nutrient change in some traditional Nigerian foods during cooking 2. Proximate mineral composition, metabolizable energy and protein percent. West African Journal of Biological and Applied Chemistry 20:19–26.Google Scholar