presence of aflatoxins in smoked-dried fish sold in abeokuta, ogun ...

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LIST OF FIGURES Figure 1: Aflatoxin concentrations in the different smoked-dried fish samples 36 x
ABSTRACT This study was aimed to estimate the aflatoxin contamination of smoked-dried fish samples of Sole, Catfish, Silverside, Silver catfish, West African shad, Mud Catfish, Bonga, Catfish, Rope and Butter fish in Abeokuta, Ogun State, Southwestern Nigeria. Fifty smoked-dried fish samples sold at two different markets in Abeokuta town; Lafenwa and Itoku in Abeokuta, Ogun State, Nigeria were found to be lightly contaminated with aflatoxin, after testing for their aflatoxin levels using Veratox quantitative aflatoxin test. The Aflatoxin concentrations in the samples were between 0.030ppb-1.150ppb with a mean of 0.5980±0.1050 ppb. Rope fish had the lowest aflatoxin concentration while Mud catfish had the highest aflatoxin concentration respectively. Aflatoxins are known to be carcinogenic (causing hepatoma – cancer of the liver), acute hepatitis, reduced red blood cell and decreased immune system in man. Prolonged intake of smoked fish with these metabolites may constitute potential public health hazard. In conclusion smoked-dried fishes stored for sale in Abeokuta markets were not heavily contaminated with aflatoxins. xi
Page 1 and 2: PRESENCE OF AFLATOXINS IN SMOKED-DR
Page 3 and 4: DEDICATION I dedicate this work to
Page 5 and 6: TABLE OF CONTENTS Title Page Certif
Page 7 and 8: CHAPTER THREE 3.0 MATERIALS AND MET
Page 9: LIST OF PLATES Plate 1: Ethmalosa f
Page 13 and 14: foods, Nwokolo andOkonkwo (1998) fo
Page 15 and 16: Reactivity: The lactone ring is sus
Page 17 and 18: 1.1.4 Effect on Human Health Accord
Page 19 and 20: 1.1.7 Cellular Effects Aflatoxins a
Page 21 and 22: order. Adebayo et al. (2006) report
Page 23 and 24: Aspergillus flavus and Aspergillus
Page 25 and 26: Peanuts, maize and cottonseed are a
Page 27 and 28: high proportion of endo-epoxide and
Page 29 and 30: of all mice, but the lesions were j
Page 31 and 32: The mean concentration of aflatoxin
Page 33 and 34: eported and concluded that there wa
Page 35 and 36: Table2: Analytical methods validate
Page 37 and 38: of regulations. Data were not avail
Page 39 and 40: CHAPTER THREE 3.0 MATERIALS AND MET
Page 41 and 42: 3.5 Test Procedure 1. The kit (cont
Page 43 and 44: CHAPTER FOUR 4.0 RESULTS 4.1 Sample
Page 45 and 46: Plate 5: Clarias gariepinus Plate 6
Page 47 and 48: Figure 1: Aflatoxin concentrations
Page 49 and 50: esult also revealed that Aflatoxins
Page 51 and 52: REFERENCES Abulu, E.O., Uriah, N.,
Page 53 and 54: European Commission (2002). Commiss
Page 55 and 56: Hull, J.E., Chen, Z.Y. and Eaton, D
Page 57 and 58: Peterson, S.W., Ito, Y., Horn, B.W.
Page 59 and 60: Wild, C.P., Yin, F., Turner, P.C.,
Page 61:
APPENDIX II One -Sample T-test Test
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