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  1. Book ; Online ; E-Book: Food preservation and safety of natural products

    Onyeaka, Helen N. / Nwabor, Ozioma F.

    2022  

    Author's details Helen N. Onyeaka and Ozioma F. Nwabor
    Keywords Food/Preservation ; Foodborne diseases/Prevention
    Subject code 641.4
    Language English
    Size 1 online resource (274 pages)
    Publisher Academic Press
    Publishing place London, UK
    Document type Book ; Online ; E-Book
    Note Description based upon print version of record.
    Remark Zugriff für angemeldete ZB MED-Nutzerinnen und -Nutzer
    ISBN 0-323-85701-9 ; 9780323857000 ; 978-0-323-85701-7 ; 0323857000
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  2. Article ; Online: Exploring the Role of Green Microbes in Sustainable Bioproduction of Biodegradable Polymers.

    Akinsemolu, Adenike / Onyeaka, Helen

    Polymers

    2023  Volume 15, Issue 23

    Abstract: Research efforts have shifted to creating biodegradable polymers to offset the harmful environmental impacts associated with the accumulation of non-degradable synthetic polymers in the environment. This review presents a comprehensive examination of the ...

    Abstract Research efforts have shifted to creating biodegradable polymers to offset the harmful environmental impacts associated with the accumulation of non-degradable synthetic polymers in the environment. This review presents a comprehensive examination of the role of green microbes in fostering sustainable bioproduction of these environment-friendly polymers. Green microbes, primarily algae and cyanobacteria, have emerged as promising bio-factories due to their ability to capture carbon dioxide and utilize solar energy efficiently. It further discusses the metabolic pathways harnessed for the synthesis of biopolymers such as polyhydroxyalkanoates (PHAs) and the potential for genetic engineering to augment their production yields. Additionally, the techno-economic feasibility of using green microbes, challenges associated with the up-scaling of biopolymer production, and potential solutions are elaborated upon. With the twin goals of environmental protection and economic viability, green microbes pave the way for a sustainable polymer industry.
    Language English
    Publishing date 2023-12-04
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2527146-5
    ISSN 2073-4360 ; 2073-4360
    ISSN (online) 2073-4360
    ISSN 2073-4360
    DOI 10.3390/polym15234617
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Assessing the vulnerability of food supply chains to climate change-induced disruptions.

    Tchonkouang, Rose Daphnee / Onyeaka, Helen / Nkoutchou, Hugue

    The Science of the total environment

    2024  Volume 920, Page(s) 171047

    Abstract: Climate change is one of the most significant challenges worldwide. There is strong evidence from research that climate change will impact several food chain-related elements such as agricultural output, incomes, prices, food access, food quality, and ... ...

    Abstract Climate change is one of the most significant challenges worldwide. There is strong evidence from research that climate change will impact several food chain-related elements such as agricultural output, incomes, prices, food access, food quality, and food safety. This scoping review seeks to outline the state of knowledge of the food supply chain's vulnerability to climate change and to identify existing literature that may guide future research, policy, and decision-making aimed at enhancing the resilience of the food supply chain. A total of 1526 publications were identified using the SCOPUS database, of which 67 were selected for the present study. The vulnerability assessment methods as well as the adaptation and resilience measures that have been employed to alleviate the impact of climate change in the food supply chain were discussed. The results revealed a growing number of publications providing evidence of the weakening of the food supply chain due to climate change and extreme weather events. Our assessment demonstrated the need to broaden research into the entire food supply chain and various forms of climatic variability because most studies have concentrated on the relationships between climatic fluctuations (especially extreme rainfall, temperatures, and drought) and production. A lack of knowledge about the effects of climate change on the food supply chain and the underlying socio-economic consequences could result in underperformance or failure of the food supply chain.
    MeSH term(s) Climate Change ; Food Supply ; Agriculture/methods ; Droughts ; Temperature
    Language English
    Publishing date 2024-02-17
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2024.171047
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 949: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  4. Article: Listeria monocytogenes

    Finn, Lawrence / Onyeaka, Helen / O'Neill, Sally

    Foods (Basel, Switzerland)

    2023  Volume 12, Issue 18

    Abstract: ... Listeria ... ...

    Abstract Listeria monocytogenes
    Language English
    Publishing date 2023-09-06
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2704223-6
    ISSN 2304-8158
    ISSN 2304-8158
    DOI 10.3390/foods12183339
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Exploring the Role of Green Microbes in Sustainable Bioproduction of Biodegradable Polymers

    Adenike Akinsemolu / Helen Onyeaka

    Polymers, Vol 15, Iss 23, p

    2023  Volume 4617

    Abstract: Research efforts have shifted to creating biodegradable polymers to offset the harmful environmental impacts associated with the accumulation of non-degradable synthetic polymers in the environment. This review presents a comprehensive examination of the ...

    Abstract Research efforts have shifted to creating biodegradable polymers to offset the harmful environmental impacts associated with the accumulation of non-degradable synthetic polymers in the environment. This review presents a comprehensive examination of the role of green microbes in fostering sustainable bioproduction of these environment-friendly polymers. Green microbes, primarily algae and cyanobacteria, have emerged as promising bio-factories due to their ability to capture carbon dioxide and utilize solar energy efficiently. It further discusses the metabolic pathways harnessed for the synthesis of biopolymers such as polyhydroxyalkanoates (PHAs) and the potential for genetic engineering to augment their production yields. Additionally, the techno-economic feasibility of using green microbes, challenges associated with the up-scaling of biopolymer production, and potential solutions are elaborated upon. With the twin goals of environmental protection and economic viability, green microbes pave the way for a sustainable polymer industry.
    Keywords green microbes ; biodegradable polymers ; sustainable bioproduction ; polyhydroxyalkanoates ; metabolic pathways ; Organic chemistry ; QD241-441
    Subject code 660 ; 333
    Language English
    Publishing date 2023-12-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Exploring Bacillus subtilis: Ecology, biotechnological applications, and future prospects.

    Akinsemolu, Adenike A / Onyeaka, Helen / Odion, Samuel / Adebanjo, Idris

    Journal of basic microbiology

    2024  , Page(s) e202300614

    Abstract: From its early identification by Christian Gottfried Ehrenberg to its current prominence in scientific research, Bacillus subtilis (B. subtilis) has emerged as a foundational model organism in microbiology. This comprehensive review delves deep into its ... ...

    Abstract From its early identification by Christian Gottfried Ehrenberg to its current prominence in scientific research, Bacillus subtilis (B. subtilis) has emerged as a foundational model organism in microbiology. This comprehensive review delves deep into its genetic, physiological, and biochemical intricacies, revealing a sophisticated cellular blueprint. With the incorporation of advanced techniques such as clustered regularly interspaced short palindromic repeats/CRISPR-associated protein 9 and integrative computational methodologies, the potential applications of B. subtilis span diverse sectors. These encompass its significant contributions to biotechnology, agriculture, and medical fields and its potential for aiding environmental cleanup efforts. Yet, as we move forward, we must grapple with concerns related to safety, ethics, and the practical implementation of our lab findings in everyday scenarios. As our understanding of B. subtilis deepens, it is evident that its contributions will be central to pioneering sustainable solutions for global challenges in the years to come.
    Language English
    Publishing date 2024-03-20
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 632513-0
    ISSN 1521-4028 ; 0233-111X
    ISSN (online) 1521-4028
    ISSN 0233-111X
    DOI 10.1002/jobm.202300614
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 824: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  7. Article: Mitigating physical hazards in food processing: Risk assessment and preventive strategies.

    Onyeaka, Helen / Jalata, Dassalegn Daraje / Mekonnen, Solomon Abate

    Food science & nutrition

    2023  Volume 11, Issue 12, Page(s) 7515–7522

    Abstract: Physical contaminants in food, such as glass, metal, and plastic, can cause significant health risks and economic loss. This study explores these understudied physical hazards, aiming to provide comprehensive risk analysis and preventive solutions. Our ... ...

    Abstract Physical contaminants in food, such as glass, metal, and plastic, can cause significant health risks and economic loss. This study explores these understudied physical hazards, aiming to provide comprehensive risk analysis and preventive solutions. Our research identified several key infiltration points in the food supply chain, including raw material sourcing and packaging stages. These hazards can be effectively mitigated by employing advanced technologies like metal detectors and optical sorting machines, along with stringent quality control measures. The findings offer valuable insights for stakeholders in the food industry, emphasizing the need for regulatory compliance and consumer education to ensure food safety.
    Language English
    Publishing date 2023-10-07
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2703010-6
    ISSN 2048-7177
    ISSN 2048-7177
    DOI 10.1002/fsn3.3727
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Environmental impact of fouling for crude oil flow in preheat pipes according to oil blends.

    Abdulhussein, Zaid A / Al-Sharify, Zainab T / Alzuraiji, Mohammed / Onyeaka, Helen

    Heliyon

    2023  Volume 9, Issue 11, Page(s) e21999

    Abstract: Crude oil fouling is a complex process caused by multiple mechanisms. This study examined fouling's environmental impact on a distillation unit's heating tubes and heat exchangers, proposing optimal pollution levels to reduce emissions and achieve ... ...

    Abstract Crude oil fouling is a complex process caused by multiple mechanisms. This study examined fouling's environmental impact on a distillation unit's heating tubes and heat exchangers, proposing optimal pollution levels to reduce emissions and achieve sustainability goals. The study evaluated five crude oil blends in terms of API, sulphur, salt content, and other physical properties. Contaminated water was analyzed through biological and chemical means, while CO2, NOx, and SOx emissions were calculated from actual fuel and power consumption. Solid and sludge sediments were observed throughout all plate heat exchangers, consisting primarily of iron hydroxides and manganese oxides. Rationalizing energy use reduced the burden on the environment and fuel consumption by 7 %, with a 2 % reduction in energy needed to refine crude oil feeding units when fouling is removed after maintenance. By optimizing pollution levels and reducing energy consumption, the environmental impact of fouling can be mitigated.
    Language English
    Publishing date 2023-11-13
    Publishing country England
    Document type Journal Article
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2023.e21999
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: An extended SEIRDV compartmental model: case studies of the spread of COVID-19 and vaccination in Tunisia and South Africa.

    Tamasiga, Phemelo / Onyeaka, Helen / Umenweke, Great C / Uwishema, Olivier

    Annals of medicine and surgery (2012)

    2023  Volume 85, Issue 6, Page(s) 2721–2730

    Abstract: In the wake of the unprecedented health crisis triggered by the global COVID-19 pandemic, countries are still grappling with the pandemic's immediate health and socioeconomic consequences. This paper presents an extended SEIRD model with vaccination to ... ...

    Abstract In the wake of the unprecedented health crisis triggered by the global COVID-19 pandemic, countries are still grappling with the pandemic's immediate health and socioeconomic consequences. This paper presents an extended SEIRD model with vaccination to study the evolution of COVID-19 in South Africa and Tunisia since the commencement of the vaccination campaign in each country, respectively. Epidemiologists often quantify a risk reduction following the implementation of non-pharmaceutical containment measures and vaccines when attempting to stem the spread of pandemics. However, an important question they often ask is the effectiveness of the non-pharmaceutical containment measures (social distancing and lockdowns) and the efficacy of such measures, including vaccines. Africa's COVID-19 vaccine roll-out stands at 16% as of April 2022; however, the continent lags behind many developing countries even though it harbours about 16% of the world population. While proliferating literature quantifies the efficacy and effectiveness of COVID-19 vaccines, very little has been done using the SEIRDV model in African countries. This study compares the model-predicted results with the available data to estimate the dynamics of the infected population, using data from 20-03-2021 to 30-12-2021. A simulation of the SEIRDV model is performed and fitted to the data. Simulating the model involves solving a system of Ordinary Differential Equations numerically by taking the initial values for the key model parameters as inputs. After simulating the SEIRDV model, the model parameters are compared with real-world COVID-19 and vaccination data in order to estimate the values of the different parameters that best fit the observed data. The results of the study showed an inverted U-shaped trend for the infection rate after vaccination, indicating that increasing the vaccination rates reduces the transmission rates. Therefore African countries must continue to scale up the vaccination campaigns, and the world needs to endeavour to ensure an equitable vaccination roll-out to developing countries.
    Language English
    Publishing date 2023-04-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 2745440-X
    ISSN 2049-0801
    ISSN 2049-0801
    DOI 10.1097/MS9.0000000000000627
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Foodborne pathogens in Africa

    Ifeanyi Michael Mazi / Helen Onyeaka / Nnabueze Darlington Nnaji

    Public Health Challenges, Vol 2, Iss 1, Pp n/a-n/a (2023)

    Understanding Cronobacter sakazakii

    2023  

    Abstract: Abstract Cronobacter sakazakii is an emerging and opportunistic foodborne pathogen that causes severe infantile diseases, including meningitis, necrotizing enterocolitis, and septicemia. It has been reported in numerous countries around the world, ... ...

    Abstract Abstract Cronobacter sakazakii is an emerging and opportunistic foodborne pathogen that causes severe infantile diseases, including meningitis, necrotizing enterocolitis, and septicemia. It has been reported in numerous countries around the world, including those in Africa. Although it has been isolated from food, environmental and clinical samples across Africa, the most implicated source of the C. sakazakii infection outbreaks across the globe has been the consumption of contaminated powdered infant formula. Cronobacter has many unique characteristics that contribute to its survival in harsh environments and transmission along the food chain from production to consumption. A potential foodborne disease outbreak caused by C. sakazakii can increase the overall foodborne disease burden and hinder any progress in managing the overly strained public health situation in Africa. This article presents an insight into the occurrence and prevalence of C. sakazakii infection in Africa's food environment, pointing out the transmission route along the food chain and its accompanying food safety concerns. This paper advocates for strict compliance with food safety and control measures to prevent its spread in African countries.
    Keywords Cronobacter sakazakii contamination ; detective methods ; epidemiological report ; food process controls ; Public aspects of medicine ; RA1-1270
    Language English
    Publishing date 2023-03-01T00:00:00Z
    Publisher Wiley
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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