Effectiveness of hermetic technologies in limiting aflatoxin B1 and fumonisin B1 contamination of stored maize grain under smallholder conditions in Zimbabwe
| Autor: | C. Chidewe, L.R. Manema, Mudadi A.N. Benhura, Loveness K. Nyanga, Tatenda Clive Murashiki, Brighton M. Mvumi |
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| Rok vydání: | 2018 |
| Předmět: |
Aflatoxin
Fumonisin B1 010401 analytical chemistry Public Health Environmental and Occupational Health 04 agricultural and veterinary sciences Limiting Biology Contamination Toxicology 040401 food science 01 natural sciences 0104 chemical sciences chemistry.chemical_compound 0404 agricultural biotechnology Agronomy chemistry Mycotoxin Food Science Field conditions |
| Zdroj: | World Mycotoxin Journal. 11:459-469 |
| ISSN: | 1875-0796 1875-0710 |
| DOI: | 10.3920/wmj2017.2288 |
| Popis: | There is limited empirical evidence on the efficacy of hermetic storage containers in reducing mycotoxin occurrence in stored maize grain under smallholder field conditions. Levels of aflatoxin B1 (AFB1) and fumonisin B1 (FB1) in maize samples collected from hermetic metal silos (148), hermetic grain bags (121) and conventional stores (179) during 2015 and 2016 storage seasons in two rural districts of Zimbabwe were assessed. AFB1 was determined using high performance liquid chromatography with post-column derivatisation and fluorescence detection, whilst FB1 was determined using direct competitive ELISA. All maize samples collected at harvest in 2015 and 2016 seasons contained FB1 at levels ranging from 10 to 462 μg/kg and 13 to 537 μg/kg, respectively. Use of hermetic containers did not seem to have any effect on the development of FB1 in stored maize grain, as there was no significant difference (P>0.05) in the increase of FB1 contamination in hermetic and conventional stores. Prior to storage, the levels of AFB1 in the maize ranged from below the limit of quantitation (LOQ) to 25.0 μg/kg, whilst levels during storage ranged from 1 in maize stored in hermetic containers, was significantly (P1 and subsequent human exposure to these toxins. Therefore, hermetic storage containers are recommended to smallholder maize producers for safe and effective limitation of AFB1 contamination during storage and hence reduce exposure among consumers. |
| Databáze: | OpenAIRE |
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