Aflatoxins and aflatoxigenic fungal contamination of common poultry feed products in Katsina State, Nigeria
This study was conducted to screen the common poultry feed products sold within Katsina State, Nigeria, for the presence of aflatoxigenic fungi and aflatoxins. A total of 15 poultry feed samples from 3 major producing companies were purchased from retailers, and then cultured for fungal isolation...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
The National Information and Documentation Centre (NIDOC) , Egypt
2020-02-01
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| Series: | Novel Research in Microbiology Journal |
| Subjects: | |
| Online Access: | https://nrmj.journals.ekb.eg/article_73438_a04891b405b1813ef6e2558a15656aa4.pdf |
| Summary: | This study was conducted to screen the common poultry feed products sold within Katsina State, Nigeria, for
the presence of aflatoxigenic fungi and aflatoxins. A total of 15 poultry feed samples from 3 major producing
companies were purchased from retailers, and then cultured for fungal isolation on potato dextrose agar (PDA)
supplemented with Cycloheximide. Fungal colonies were identified using standard mycological techniques. The
samples were further extracted using a methanol-water solvent (v/v) 1:2, and the extracts were analyzed for the
presence of aflatoxins using Fourier Transform Infrared Spectroscopy (FTIR). A total of 30 fungal isolates
comprising Aspergillus spp. (30%), Mucor spp. (30%), Rhodotorula spp. (13.3%), Rhizopus spp. (10%),
Saccharomyces spp. (10%), Geotrichum spp. (3.3%) and Endomyces spp. (3.3%) were recovered. The FTIR
results showed that 10% of the samples were contaminated by aflatoxins as evidenced by the presence of
peaks/wavenumbers specific for aflatoxins’ functional groups in their FTIR spectra (2850 to 3100 cm-1
, 1650 to
2000 cm-1
, 1670 to 1820 cm-1
, 1400 to 1600 cm-1
, 1364 to 1369 cm-1 and 1040 to 1050 cm-1
, for aromatic –C–H
and CH2, in-plane aromatic –CH bending, Carbonyl C=O, aromatic C=C, –CH3 adjacent to epoxy ring, and
symmetric stretching of =C–O–C, respectively). The poultry feeds analyzed were contaminated by aflatoxigenic
fungi and aflatoxins, in addition to other potentially pathogenic fungi. Therefore, more stringent prevention and
control methods are required to reduce the contamination levels, to avoid loss of poultry lives and possible
transfer of carcinogenic mycotoxins to humans along the food chain. |
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| ISSN: | 2537-0286 2537-0294 |