INCIDENCE OF MOULDS IN SOME VARIETIES OF STORED COWPEA AND PEANUTS IN MAIDUGURI NIGERIA

  • Popoola A R
  • Adeoti A Y
  • Idakwo P Y
Keywords: Cowpea, peanuts stored, mould, incidence, Nigeria

Abstract

Incidence and types of mould present in three varieties of peanuts (Ex-Poland, Double colour and Yar Dakar) and cowpea (D.90, GV and Borno Brown) stored in Bulumkutu market, Maiduguri were studied. Moisture content, percentage seeds surface-infected, total mould count (surface and inner infection) and mould identification were determined. Moisture content ranged from 13.5 - 19.6% and 15.0 - 20.0% in varieties of peanuts and cowpea respectively. Varieties of stored cowpea had a wider range of surface infection (19.0-51.0%) compared with peanuts (21.3%-38.4%). Total mould count was however lower in cowpea (9.2 x102 - 1.8 x103 cfu/g) compared with peanuts (1.3 x103 - 1.8 x 103 cfu/g), indicating that peanuts had more mould growing within the seeds than cowpea. Three genera of mould were identified in each crop - Aspergillus. Penicillium and Zygomycete. Borno Brown variety of cowpea had the highest load of these mould (57.6%) while GV had the least (14.3%). In peanut, Ex-Poland variety had the highest load of mould (42.9%) while each of Double colour and Yar Dakar variety had 28.6% load.

References

Akinnusi, O. 1986. Grain storage methods and practices in Nigeria. Paper presented at the Symposium on "The Development of Cereal Storage in Nigeria". Organised by the Department of Agricultural Sciences and Technology, Ramat Polytechnic, Maiduguri. 20°i November, 1986. p. 9

Austwick, P. K. C., Gitter, M and Watkins, C. V. 1960. Pulmonary Aspergillosis in lambs. Veterinary Research 72:19-21

Ayrest, G.J. 1969. Aflatoxin of food and feedstuff. Journal of Stored Product Research 5:127

Barampama, Z. and Simard, R. E. 1993. Nutrient composition, protein quality and antinutritional factors of some varieties of dry beans (Phaseolus vulgaris) grown in Burundi. Food Chemistry 47(2):159-167

Bullerman, L.B. 1979. Significance of mycotoxins to food safety and human health. Journal of Food Protection 42:65-86

CAB International. 2003. Statistical Data on Agricultural Production : FAO/STAT 2003. In: Crop Protection Compedium, Wallingford, UK: CAB International

Chupp, C. and Sherry, F. 1992. Vegetable disease and their control. Published by Ronald Press Company. p. 24

D'Mello J. P. F and Macdonald, A. M. C. 1997. Mycotoxins. Animal Feed Science and Technology 69(1/3):155-166

Davis, N. D., Wagener, R. E., Morgan-Jones, G and Diener, U. L 1975. Toxigenic, thermophilic and thermotolerant fungi. Applied Microbiology 29:455¬457

Eicker, A. 1972. Occurrence and isolation of South African thermophilic fungi. South African Journal of Science 68:150-155

Hesseltine, C.W. 1979. Conditions leading to mycotoxin contamination of foods and feeds. In

Mycotoxins and other fungal related problems (J.V. Rodnicks edn). Advances in Chemistry Ser. No. 149:1-22

Ismail, A. M., Hall, A. E. and Close, T. J. , 197. Chilling tolerance during emergence of cowpea associated with a dehydrin and slow electrolyte leakage. Crop Science 37(4):1270-1277

Mills, J. T. and Woods, S. M. 1994. Factors affecting storage life of farm-stored field peas (Pisum sativum L) and white beans (Phaseolus vulgaris L). Journal of Stored Products Research 30(3):215-226

Moline, H. E. and Kuti, J. O. 1984. Comparative studies of two Mucor species, causing post-harvest decay of tomato and their control. Plant Disease 68(6):524-526

Moubasher, A. H. and Abdel-Hafez, S. 1. 1978. Study of mycoflora of Egyptian soil. Mycopathologia 63(1):3-10

Nahdy, M. S., Silim, S. N., and Ellis, R. H. 1999. Effect of field infestation of immature pigeonpea pods on production of active (flight) and sedentary(flightless) morphs of Callisobruchus chinensis. Journal of Stored Products Research 9(35)4:339-354

Nkama, I., Collison, E. K., Negbenebor, C. A., and Mian, W. 1987. Survey of moulds and mycotoxin contamination of foods and feedstuffs in Borno, Gongola and Bauchi State. A Research Proposal submitted to the University Research Grant Committee, University of Maiduguri, Nigeria.

Ogbonna, C. 1. C and Pugh, G. J. F. 1983. Thermophilic and Thermotolerant Fungi in Nigeria. International Biodeterioration Bulletin 19(2): 69-75

Onions, A.H.S, Allsopp, D and Egg ins, H.O.W. 1980. Smith's Introduction to Industrial Mycology. Seventh Edition. John Wiley and Sons, N/Y P. 50 - 57

Popoola, A.R and Ogbonna, C.I.C. 1997. Estimation of Extracellular Degradative Enzymes of Fungi isolated from Maiduguri. West African Journal of Biological Sciences 6:132-140

Popoola, A.R., Idakwo, P.Y and Gwanzang, I. 1997. Identification and Control of Microfungi causing

INCIDENCE OF MOULDS IN SOME VARIETIES OF STORED COWPEA ...

post-harvest tomato deterioration in Maiduguri, Nigeria. Research Journal of,Science 3(1&2):20-2'5

Popoola, A. R. and Idakwo, P. Y. 2002. Effect of Fungicides on Wheat Seeds Stored at Two Levels of Relative Humidity. Nigerian Journal of Experimental and Applied Biology 3(1):111-114
Semnick, G., Harshfield, G. S., Carlson, C. W. and Kwalek, N. 1970. Occurrence of mycotoxins in Aspergillus. In: Nesberg Microbial Toxin. Willev Interscience. Pp. 185-190

Suyarnan;anan, D. 1970. Seed Pathology. Vikans Publishing House, PVT Ltd pp.90 - 111
Issue
Vol 3 No 4 (2003)
Section
Articles