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Safety of Yam-Derived (Dioscorea rotundata) Foodstuffs—Chips, Flakes and Flour: Effect of Processing and Post-Processing Conditions
The production of yam-derived (Dioscorea rotundata) foodstuffs is mainly performed by small and medium scale processors that employ old traditional methods. This can lead to differences in quality from processor to processor, and from location to location, with consequent safety concerns. As such, t...
Autores principales: | , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6352045/ https://www.ncbi.nlm.nih.gov/pubmed/30609871 http://dx.doi.org/10.3390/foods8010012 |
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author | Omohimi, Celestina Piccirillo, Clara Ferraro, Vincenza Roriz, Mariana C. Omemu, Mobolaji A. Santos, Sandra M. Dias Da Ressurreição, Sandrine Abayomi, Louise Adebowale, Abdulraqaz Vasconcelos, Marta W. Obadina, Oluwasegun Sanni, Lateef Pintado, Maria M. E. |
author_facet | Omohimi, Celestina Piccirillo, Clara Ferraro, Vincenza Roriz, Mariana C. Omemu, Mobolaji A. Santos, Sandra M. Dias Da Ressurreição, Sandrine Abayomi, Louise Adebowale, Abdulraqaz Vasconcelos, Marta W. Obadina, Oluwasegun Sanni, Lateef Pintado, Maria M. E. |
author_sort | Omohimi, Celestina |
collection | PubMed |
description | The production of yam-derived (Dioscorea rotundata) foodstuffs is mainly performed by small and medium scale processors that employ old traditional methods. This can lead to differences in quality from processor to processor, and from location to location, with consequent safety concerns. As such, the effects of processing and post-processing phases (i.e., storage, transport, etc.) on the safety of some yam-derived foodstuffs—namely chips, flakes, and flour—has been evaluated, with a focus on bacterial and fungal contamination, aflatoxins, pesticides, and heavy metals (Pb, Ni, Cd and Hg). Yams harvested and processed in Nigeria were screened, being that the country is the largest producer of the tuber, with 70–75% of the world production. Results highlighted no presence of pesticides, however, many samples showed high levels of bacterial and fungal contamination, together with heavy metal concentrations above the recommended safety levels. No trend was observed between the items considered; it was noticed, however, that samples purchased from the markets showed higher contamination levels than those freshly produced, especially regarding bacterial and aflatoxins presence. The processing stage was identified as the most critical, especially drying. Nonetheless, post-processing steps such as storage and handling at the point of sale also contributed for chemical contamination, such as aflatoxin and heavy metals. The results suggested that both the processing and post-processing phases have an impact on the safety of yam chips, flakes, and flour. |
format | Online Article Text |
id | pubmed-6352045 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-63520452019-02-01 Safety of Yam-Derived (Dioscorea rotundata) Foodstuffs—Chips, Flakes and Flour: Effect of Processing and Post-Processing Conditions Omohimi, Celestina Piccirillo, Clara Ferraro, Vincenza Roriz, Mariana C. Omemu, Mobolaji A. Santos, Sandra M. Dias Da Ressurreição, Sandrine Abayomi, Louise Adebowale, Abdulraqaz Vasconcelos, Marta W. Obadina, Oluwasegun Sanni, Lateef Pintado, Maria M. E. Foods Article The production of yam-derived (Dioscorea rotundata) foodstuffs is mainly performed by small and medium scale processors that employ old traditional methods. This can lead to differences in quality from processor to processor, and from location to location, with consequent safety concerns. As such, the effects of processing and post-processing phases (i.e., storage, transport, etc.) on the safety of some yam-derived foodstuffs—namely chips, flakes, and flour—has been evaluated, with a focus on bacterial and fungal contamination, aflatoxins, pesticides, and heavy metals (Pb, Ni, Cd and Hg). Yams harvested and processed in Nigeria were screened, being that the country is the largest producer of the tuber, with 70–75% of the world production. Results highlighted no presence of pesticides, however, many samples showed high levels of bacterial and fungal contamination, together with heavy metal concentrations above the recommended safety levels. No trend was observed between the items considered; it was noticed, however, that samples purchased from the markets showed higher contamination levels than those freshly produced, especially regarding bacterial and aflatoxins presence. The processing stage was identified as the most critical, especially drying. Nonetheless, post-processing steps such as storage and handling at the point of sale also contributed for chemical contamination, such as aflatoxin and heavy metals. The results suggested that both the processing and post-processing phases have an impact on the safety of yam chips, flakes, and flour. MDPI 2019-01-03 /pmc/articles/PMC6352045/ /pubmed/30609871 http://dx.doi.org/10.3390/foods8010012 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Omohimi, Celestina Piccirillo, Clara Ferraro, Vincenza Roriz, Mariana C. Omemu, Mobolaji A. Santos, Sandra M. Dias Da Ressurreição, Sandrine Abayomi, Louise Adebowale, Abdulraqaz Vasconcelos, Marta W. Obadina, Oluwasegun Sanni, Lateef Pintado, Maria M. E. Safety of Yam-Derived (Dioscorea rotundata) Foodstuffs—Chips, Flakes and Flour: Effect of Processing and Post-Processing Conditions |
title | Safety of Yam-Derived (Dioscorea
rotundata) Foodstuffs—Chips, Flakes and Flour: Effect of Processing and Post-Processing Conditions |
title_full | Safety of Yam-Derived (Dioscorea
rotundata) Foodstuffs—Chips, Flakes and Flour: Effect of Processing and Post-Processing Conditions |
title_fullStr | Safety of Yam-Derived (Dioscorea
rotundata) Foodstuffs—Chips, Flakes and Flour: Effect of Processing and Post-Processing Conditions |
title_full_unstemmed | Safety of Yam-Derived (Dioscorea
rotundata) Foodstuffs—Chips, Flakes and Flour: Effect of Processing and Post-Processing Conditions |
title_short | Safety of Yam-Derived (Dioscorea
rotundata) Foodstuffs—Chips, Flakes and Flour: Effect of Processing and Post-Processing Conditions |
title_sort | safety of yam-derived (dioscorea
rotundata) foodstuffs—chips, flakes and flour: effect of processing and post-processing conditions |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6352045/ https://www.ncbi.nlm.nih.gov/pubmed/30609871 http://dx.doi.org/10.3390/foods8010012 |
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