Evaluation of aflatoxin contamination of stored maize in the Brong-Ahafo region of Ghana

Poster

Autor/innen

  • Robert Benson-Obour Department of Crop Science, School of Agriculture, University of Ghana, Legon, Accra, Ghana
  • Michael Lartey Department of Pharmaceutical Chemistry, School of Pharmacy, University of Ghana, Legon, Accra, Ghana
  • William Cornelius Department of Crop Science, School of Agriculture, University of Ghana, Legon, Accra, Ghana
  • James Agyel--Ohemeng Department of Ecotourism, Recreation and Hospitality, School of Natural Resources, University of Energy and Natural Resources, Sunyani, Ghana
  • Phyllis Opare Department of Languages and General Studies, School of Natural Resources, University of Energy and Natural Resources, Sunyani, Ghana
  • Luciano Cinquanta Department of Agricultural, Environmental and Food Science, University of Molise, Campobasso, Italy
  • Daniel Obeng-Ofori Department of Horticulture and Crop Production, School of Agriculture and Technology, University of Energy and Natural Resources, Sunyani, Ghana

DOI:

https://doi.org/10.5073/jka.2018.463.243

Schlagworte:

aflatoxin, fungi, maize varieties, Obatanpa, Abontem, Aburohemaa, hermetic bag, polypropylene sack, local crib

Abstract

This study assessed the aflatoxin contamination and the presence of fungi in three maize varieties (Obatanpa, Abontem and Aburohemaa) stored using different storage methods namely storage in hermetic bags, woven polypropylene sacks and local crib in the Nkoranza-South district of the Brong-Ahafo region of Ghana. A factorial design arrangement was laid out in a randomized complete block design (RCBD). The isolation and identification of fungal pathogens associated with maize samples before and after storage were carried out on potato dextrose agar (PDA). Total flatoxin levels in the three maize varieties was determined by the use of enzyme-linked immunosorbent assay (ELISA) at 450 nm wavelength. Six fungi species were identified in the maize namely: Aspergillus flavus, Penicillium sp, Fusarium sp., Lasiodiplodia theobromae, Colletotrichum gleosporioides and Rhizopus. Before storage, Abontem variety recorded significantly higher (p < 0.05) total aflatoxin levels (113.56 ppb) compared to Obatanpa (2.91 ppb) and Aburohemaa (2.96 ppb). Maize samples stored in the polypropylene sack established significantly higher (p < 0.05) total aflatoxin levels of 82.9 ppb compared to hermetic bags (48.9 ppb) and local crib (48.9 ppb) after storage for six months. Aflatoxin levels under the interactive effect of variety and storage method was significant (p < 0.05). Overall storage of maize in hermetic bags significantly reduced aflatoxin levels hence the need to encourage maize farmers and traders to adopt hermetic bag storage technology.

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Veröffentlicht

2018-11-09

Ausgabe

Nr. 463 (2018): Proceedings of the 12th International Working Conference on Stored Product Protection (IWCSPP) in Berlin, Germany, October 7-11, 2018

Rubrik

Session 10: Microbiology, Food Safety, Quarantine, and Regulatory Aspects

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