Charles Odilichukwu R. Okpala

Prof. Dr. Charles Odilichukwu R. Okpala

Wroclaw University of Environmental and Life Sciences
orcid

Research Focus & Metrics

Academic Career Length

17Years (2010-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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3 June 2021 in Foods
Verified
Journal Article
Open access
PDF file
Chinaza Godswill AwuchiChinaza Godswill Awuchi
Chinaza Godswill Awuchi
EOErick Nyakundi Ondari
Erick Nyakundi Ondari
COChukwuka Ogbonna
Chukwuka Ogbonna
AUAnjani K. Upadhyay
Anjani K. Upadhyay
KBKatarzyna Baran
Katarzyna Baran
Raquel P. F. GuinéRaquel P. F. Guiné
Raquel P. F. Guiné
Mycotoxins are produced by fungi and are known to be toxic to humans and animals. Common mycotoxins include aflatoxins, ochratoxins, zearalenone, patulin, sterigmatocystin, citrinin, ergot alkaloids, deoxynivalenol, fumonisins, trichothecenes, Alternaria toxins, tremorgenic mycotoxins, fusarins, 3-nitropropionic acid, cyclochlorotine, sporidesmin, etc. These mycotoxins can pose several health risks to both animals and humans, including death. As several mycotoxins simultaneously occur in nature, especially in foods and feeds, the detoxification and/or total removal of mycotoxins remains challenging. Moreover, given that the volume of scientific literature regarding mycotoxins is steadily on the rise, there is need for continuous synthesis of the body of knowledge. To supplement existing information, knowledge of mycotoxins affecting animals, foods, humans, and plants, with more focus on types, toxicity, and prevention measures, including strategies employed in detoxification and removal, were revisited in this work. Our synthesis revealed that mycotoxin decontamination, control, and detoxification strategies cut across pre-and post-harvest preventive measures. In particular, pre-harvest measures can include good agricultural practices, fertilization/irrigation, crop rotation, using resistant varieties of crops, avoiding insect damage, early harvesting, maintaining adequate humidity, and removing debris from the preceding harvests. On the other hand, post-harvest measures can include processing, chemical, biological, and physical measures. Additionally, chemical-based methods and other emerging strategies for mycotoxin detoxification can involve the usage of chitosan, ozone, nanoparticles, and plant extracts.

24 February 2022 in Toxins
Verified
Journal Article
Open access
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Chinaza Godswill AwuchiChinaza Godswill Awuchi
Chinaza Godswill Awuchi
EOErick Nyakundi Ondari
Erick Nyakundi Ondari
SNSarah Nwozo
Sarah Nwozo
GOGrace Akinyi Odongo
Grace Akinyi Odongo
JOSIAH ESEOGHENE IFIEJOSIAH ESEOGHENE IFIE
JOSIAH ESEOGHENE IFIE
Charles Odilichukwu R. OkpalaCharles Odilichukwu R. Okpala
Charles Odilichukwu R. Okpala
Mycotoxins are well established toxic metabolic entities produced when fungi invade agricultural/farm produce, and this happens especially when the conditions are favourable. Exposure to mycotoxins can directly take place via the consumption of infected foods and feeds; humans can also be indirectly exposed from consuming animals fed with infected feeds. Among the hundreds of mycotoxins known to humans, around a handful have drawn the most concern because of their occurrence in food and severe effects on human health. The increasing public health importance of mycotoxins across human and livestock environments mandates the continued review of the relevant literature, especially with regard to understanding their toxicological mechanisms. In particular, our analysis of recently conducted reviews showed that the toxicological mechanisms of mycotoxins deserve additional attention to help provide enhanced understanding regarding this subject matter. For this reason, this current work reviewed the mycotoxins’ toxicological mechanisms involving humans, livestock, and their associated health concerns. In particular, we have deepened our understanding about how the mycotoxins’ toxicological mechanisms impact on the human cellular genome. Along with the significance of mycotoxin toxicities and their toxicological mechanisms, there are associated health concerns arising from exposures to these toxins, including DNA damage, kidney damage, DNA/RNA mutations, growth impairment in children, gene modifications, and immune impairment. More needs to be done to enhance the understanding regards the mechanisms underscoring the environmental implications of mycotoxins, which can be actualized via risk assessment studies into the conditions/factors facilitating mycotoxins’ toxicities.


20 June 2021 in Foods
Verified
Journal Article
Open access
PDF file
James ChachaJames Chacha
James Chacha
LZLiyan Zhang
Liyan Zhang
Chigozie OfoeduChigozie Ofoedu
Chigozie Ofoedu
Rashid SuleimanRashid Suleiman
Rashid Suleiman
JDJoachim Dotto
Joachim Dotto
Raquel P. F. GuinéRaquel P. F. Guiné
Raquel P. F. Guiné
The push for non-thermal food processing methods has emerged due to the challenges associated with thermal food processing methods, for instance, high operational costs and alteration of food nutrient components. Non-thermal food processing involves methods where the food materials receive microbiological inactivation without or with little direct application of heat. Besides being well established in scientific literature, research into non-thermal food processing technologies are constantly on the rise as applied to a wide range of food products. Due to such remarkable progress by scientists and researchers, there is need for continuous synthesis of relevant scientific literature for the benefit of all actors in the agro-food value chain, most importantly the food processors, and to supplement existing information. This review, therefore, aimed to provide a technological update on some selected non-thermal food processing methods specifically focused on their operational mechanisms, their effectiveness in preserving various kinds of foods, as revealed by their pros (merits) and cons (demerits). Specifically, pulsed electric field, pulsed light, ultraviolet radiation, high-pressure processing, non-thermal (cold) plasma, ozone treatment, ionizing radiation, and ultrasound were considered. What defines these techniques, their ability to exhibit limited changes in the sensory attributes of food, retain the food nutrient contents, ensure food safety, extend shelf-life, and being eco-friendly were highlighted. Rationalizing the process mechanisms about these specific non-thermal technologies alongside consumer education can help raise awareness prior to any design considerations, improvement of cost-effectiveness, and scaling-up their capacity for industrial-level applications.

30 August 2021 in Food Reviews International
Verified
Journal Article
Open access
Charles Odilichukwu R. OkpalaCharles Odilichukwu R. Okpala
Charles Odilichukwu R. Okpala
MKMałgorzata Korzeniowska
Małgorzata Korzeniowska
The continuous improvement in good practices and implementation of hazard analysis and critical control points (HACCP) remains very crucial for food hygiene quality safety to steadily thrive in the agro-food product industry sector. To improve the agro-food product quality, the dependency of quality management (QM) on such key facets as quality assurance (QA), control, improvement, and planning appears to be on the rise. Herein, how food hygiene quality safety standards and their associated processes have been assured is described. To understand the relevance of QM in the (above-mentioned) processes, we discuss some ethical quality considerations, food quality safety standards, HACCP fundamentals/implementation, QA control systems, other quality standards associated with agro-food industry, together with supplementary essentials associated with quality. Through the combined efforts of HACCP and QA control points (QACP) such as improved food hygiene, both quality, and safety levels can be further enhanced and sustained. Establishing the QM system within a given agro-food product enterprise is not the real deal, what matters most is how to maintain and sustain it. Some challenges encountered during the auditing/implementation processes of food safety management systems, as well as directions for future studies, involving QM, QA, and food hygiene quality safety, are presented.

1 December 2021 in Journal of Functional Foods
Verified
Journal Article
Open access
Rahul MehraRahul Mehra
Rahul Mehra
Harish KumarHarish Kumar
Harish Kumar
NKNaveen Kumar
Naveen Kumar
SRSuvartan Ranvir
Suvartan Ranvir
AJAtanu Jana
Atanu Jana
RGRaquel P.F. Guiné
Raquel P.F. Guiné