Fifty-nine species and one variety belonging to 25 genera of fungi wer
e isolated from 25 coconut samples on glucose-Czapek's (25 genera and
55 species + 1 variety) and dichloran-glycerol (8 genera and 32 specie
s + 1 variety) agar media at 28-degrees-C. The common fungi on both me
dia used were Aspergillus flavus, A. niger, Penicillium chrysogenum an
d Cladosporium cladosporioides. On glucose-Czapek's agar, A. flavus va
r. columnaris, P. oxalicum, Alternaria alternata, Rhizopus stolonifer
and Trichoderma hamatum were recorded as common fungi while A. sydowii
and Eurotium chevalieri were isolated with high frequency only on dic
hloranglycerol medium. Chromatographic analysis of the chloroform extr
acts of the coconut samples revealed that 5 out of 25 samples tested w
ere naturally contaminated with aflatoxin B1 (15- 25 mug/kg) and 3 sam
ples contaminated with ochratoxin A (50-205 mug/kg).