scholarly journals Aflatoxins and Moisture Levels in Edible Oils Produced in Burkina Faso

2020 ◽  
pp. 1-12
Author(s):  
Souleymane Zio ◽  
Isaac Dembele ◽  
Raoul Sylvain Bazoin Bazié ◽  
Abel Tankoano ◽  
François Tapsoba ◽  
...  
Keyword(s):  
Moisture Content ◽  
Burkina Faso ◽  
Aflatoxin B1 ◽  
Edible Oils ◽  
Consumer Health ◽  
Health It ◽  
Bobo Dioulasso ◽  
Surrounding Areas ◽  
Aflatoxin B2 ◽  
The Impact

Aim: The study aim was to assess aflatoxin and moisture levels in edible oils produced and consumed in Burkina Faso to know the impact on consumer health. Methodology: A total of 61 samples of refined cottonseeds oils and crude peanut oils were collected from Ouagadougou, Bobo Dioulasso and surrounding areas. Aflatoxin B1 (AFB1), aflatoxin B2 (AFB2), aflatoxin G1 (AFG1) and aflatoxin G2 (AFG2) were determined by HPLC and moisture by differential weighing after oven drying. Results: The moisture content of peanut oils were ranged from 0.06 to 0.18% and cottonseeds oils from 0.02 to 0.17%. The moisture average is 0.13% for peanut oils and 0.08% for cottonseeds oils (P<0.05). The moisture of all oils is lower and conform to the Codex Alimentarius standard. AFB1, AFB2, AFG1 and AFG2 were identified in 86.89% of the oil samples analyzed. The proportion of samples contaminated with AFB1 is 57.38%, 59.02% for AFB2, 42.62% for AFG1 and 65.57% for AFG2. The AFB1 average of peanut oils is 6.21 ng/g while that of cottonseeds oils is 0.03 ng/g. The AFB2 average of peanut oils is 0.89 ng/g against 0.04 ng/g for cottonseeds oils (P<0.05). The AFG1 average of peanut oils is 0.54 ng/g and 0.08 ng/g for cottonseeds oils (P<0.05). The AFG2 average of peanut oils was 0.66 ng/g against 0.64 ng/g for cottonseeds oils. AFG2 had the highest proportion of all oils while AFB1 has the highest concentration and proportion in peanut oils. The 72.13% samples analyzed in this study comply with the European Community standard for aflatoxin B1 level maximum in oilseeds. Conclusion: Aside from the moisture content that comply with the standard, aflatoxins are present at varying levels and can negatively impact the consumer health. It is important to strengthen the monitoring and production system in order to have quality oil.

scholarly journals Total gossypol and oxidation levels of refined cottonseeds oils and crude peanut oils produced in Burkina Faso

Food Research ◽  
2021 ◽  
Vol 5 (6) ◽  
pp. 274-282
Author(s):  
S. Zio ◽  
B. Tarnagda ◽  
O. Zongo ◽  
A. Boro ◽  
D. Elothmani ◽  
...  
Keyword(s):  
Burkina Faso ◽  
Edible Oils ◽  
Acid Value ◽  
Total Gossypol ◽  
Total Oxidation ◽  
Anisidine Value ◽  
Mineral Oils ◽  
Bobo Dioulasso ◽  
Totox Value ◽  
The Impact

Edible oils produced and consumed in Burkina Faso often do not meet established standards. The objective of this study was to evaluate the total gossypol level of refined cottonseeds oils and the oxidation state of crude peanut oils and refined cottonseeds oils in Burkina Faso to determine the impact on consumer health. A total of 61 samples including crude peanut oils and refined cottonseeds oils were collected in Ouagadougou, Bobo Dioulasso and surrounding areas. Total Gossypol and p-Anisidine value were determined by spectrophotometry. Peroxide value, acid value, soap residual value and mineral oils were determined by chemical methods. Total oxidation (Totox) value was determined by mathematical prediction. Overall, Gossypol total average of cottonseeds oils analyzed in this study was 0.032%. The p-Anisidine value average was 1.80 for refined cottonseeds oils and 11.65 for crude peanut oils. The Totox averages were respectively 19.37 and 28.36 for refined cottonseeds and crude peanut oils. The average peroxide values for refined cottonseeds oils and peanut crude oils were 8.52 and 8.33 mEq O2/Kg, respectively (p<0.05). The average acid values were 0.27 and 1.95 mg KOH/g for refined cottonseeds oils and crude peanut oils, respectively (p<0.05). None of the oils showed any mineral oil trace. The average residual soap values were respectively 1.47 and 8.32 ppm for peanut oils and cottonseeds oils (p<0.05). The majority values determined conformed to the Codex Alimentarius standard despite some cases of non-compliance. It is essential to improve the processes of oils production and conservation in order to have quality oils to guarantee the health of the consumer.

scholarly journals Parasitological Indices of Malaria Transmission in Children under Fifteen Years in Two Ecoepidemiological Zones in Southwestern Burkina Faso

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Aristide S. Hien ◽  
Ibrahim Sangaré ◽  
Sanata Coulibaly ◽  
Moussa Namountougou ◽  
Léa Paré-Toé ◽  
...  
Keyword(s):  
Burkina Faso ◽  
Malaria Transmission ◽  
Malaria Control ◽  
Future Research ◽  
Rice Area ◽  
Significant Difference ◽  
Bobo Dioulasso ◽  
Effective Decision Making ◽  
Epidemiological Profile ◽  
The Impact

Twenty years after the latest publications performed on the parasitological indices of malaria transmission in northwest of the second city of Burkina Faso, it was important to update the epidemiological profile of malaria in children under the age of 15 years. The objective of this study was to determine and compare the parasitological parameters of malaria transmission by season, area, and age in the two zones (rice and savanna) in the northwest of Bobo-Dioulasso, Burkina Faso. Overall, the results showed that there was no significant difference in the parasitological indices of malaria transmission within children under fifteen years between the rice site and the savannah site and whatever the season (P>0.05). The profound environmental modifications that occurred in the rice zone would have led to changes in vector behavior and consequently to changes in the epidemiological profile of malaria, contrary to the results obtained since the last publications. An entomological study correlated with this study is therefore necessary for effective decision-making for the malaria control in both areas. Future research must now focus on the impact that these profound environmental modifications of rice area are having on malaria control in Burkina Faso.

Aflatoxin Destruction in Corn Using Sodium Bisulfite, Sodium Hydroxide and Aqueous Ammonia

1980 ◽  
Vol 43 (7) ◽  
pp. 571-574 ◽  
Author(s):  
KURT E. MOERCK ◽  
PAUL McELFRESH ◽  
ALAN WOHLMAN ◽  
BARNEY W. HILTON
Keyword(s):  
Moisture Content ◽  
Ambient Temperature ◽  
Sodium Hydroxide ◽  
Aflatoxin B1 ◽  
Aqueous Ammonia ◽  
Sodium Bisulfite ◽  
Total Aflatoxin ◽  
Yellow Corn ◽  
Dent Corn ◽  
Aflatoxin B2

Naturally contaminated yellow dent corn containing 235 ppb of aflatoxin B1 and B2 was adjusted to a moisture content of 20% and then treated for 24 h at ambient temperature with NaHS03, NaOH or aqueous NH3 at 0.5%, 1.0%, or 2.0% concentrations. All treatments were effective in reducing aflatoxin B1 and B2 levels. Sodium bisulfite was more effective in destroying aflatoxins than were NaOH or aqueous NH3 at 0.5% and 1.0% concentrations, while NaOH and aqueous NH3 were more effective than bisulfite at 2.0% concentration. Subjecting yellow corn samples to either NaHSO3, NaOH or aqueous NH3 at 2.0% concentrations reduced aflatoxin B1 and B2 levels to below the FDA guideline of 20 ppb total aflatoxin. Sodium bisulfite was also effective in reducing the levels of aflatoxins in a white dent corn sample containing 81 ppb of aflatoxin B1 and 12 ppb of aflatoxin B2. Results suggest that NaHSO3, NaOH or aqueous NH3 can be used to effectively destroy aflatoxins in corn and possibly other agricultural commodities.

scholarly journals Publications en libre accès des universités du Burkina Faso: analyse d’impact et visibilité internationale

2018 ◽  
Vol 5 (1) ◽  
pp. 52-64
Author(s):  
Pier Luigi Rossi ◽  
Minata Traore ◽  
Fatoumata Maïga Diallo
Keyword(s):  
Data Analysis ◽  
Open Access ◽  
Burkina Faso ◽  
The Internet ◽  
Scientific Publications ◽  
International Visibility ◽  
Bobo Dioulasso ◽  
The University ◽  
The Impact ◽  
University Of Ouagadougou

Nous avons rendu disponibles, en libre accès sur internet, les collections de mémoires et de thèses soutenues à l’Université de Bobo Dioulasso et à l’Université de Ouagadougou 1 (Burkina Faso). L’analyse des données de consultation (« fichiers de log » présents sur le serveur hôte) permet de produire plusieurs indicateurs concernant l’impact et la visibilité internationale des documents constituants les collections. Nous présentons la répartition temporelle et géographique des consultations, les fréquences des accès spécifiques à chaque document, la nature des questions, l’impact des moteurs de recherche. Ces résultats montrent qu’en mettant à disposition sur Internet des documents scientifiques produits par des institutions africaines, l’importance de leur visibilité et de leur impact peuvent être démontrés en utilisant les données de consultation disponibles sur le serveur. La comparaison de ces données avec celles disponibles pour les documents en libre accès de l’Institut français pour le développement (IRD) permet de conclure que les niveaux de consultation pour les publications scientifiques des pays du « Nord » et du « Sud » sont assez similaires.Two major collections of dissertations and theses defended at the University of Bobo Dioulasso and the University of Ouagadougou 1 have been made available open access on the Internet. The data analysis of accesses available via the host server makes it possible to produce several indicators concerning the impact and the international visibility of the available documents. We will present the temporal and geographical distribution of the consultations, the specific frequencies for each document, the nature of the questions, the impact of the search engines. These results seem to show that by making available on the Internet scientific documents produced by African institutions their visibility and impact are demonstrable with the data collected by the server. A comparison of these data with those available for the open access documents of the French Institute for Development (IRD) show that the levels of consultation for scientific publications from "Northern" and "Southern" countries are quite similar.

scholarly journals Interdisciplinary and Intercultural Development of an Early Literacy App in Dhuwaya

Languages ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 106
Author(s):  
Gillian Wigglesworth ◽  
Melanie Wilkinson ◽  
Yalmay Yunupingu ◽  
Robyn Beecham ◽  
Jake Stockley
Keyword(s):  
Phonological Awareness ◽  
Early Literacy ◽  
First Language ◽  
Literacy Skills ◽  
Intercultural Development ◽  
Educational Challenges ◽  
English Speaking ◽  
Surrounding Areas ◽  
Bilingual School ◽  
The Impact

Phonological awareness is a skill which is crucial in learning to read. In this paper, we report on the challenges encountered while developing a digital application (app) for teaching phonological awareness and early literacy skills in Dhuwaya. Dhuwaya is a Yolŋu language variety spoken in Yirrkala and surrounding areas in East Arnhem Land. Dhuwaya is the first language of the children who attend a bilingual school in which Dhuwaya and English are the languages of instruction. Dhuwaya and English have different phonemic inventories and different alphabets. The Dhuwaya alphabet is based on Roman alphabet symbols and has 31 graphemes (compared to 26 in English). The app was designed to teach children how to segment and blend syllables and phonemes and to identify common words as well as suffixes used in the language. However, the development was not straightforward, and the impact of the linguistic, cultural and educational challenges could not have been predicted. Amongst these was the inherent variation in the language, including glottal stops, the pronunciation of stops, the focus on syllables as a decoding strategy for literacy development and challenges of finding one-syllable words such as those initially used with English-speaking children. Another challenge was identifying culturally appropriate images which the children could relate to and which were not copyrighted. In this paper, we discuss these plus a range of other issues that emerged, identifying how these problems were addressed and resolved by the interdisciplinary and intercultural team.

scholarly journals Testing the Effect of Hedge Height on Perceived Safety—A Landscape Design Intervention

2021 ◽  
Vol 13 (9) ◽  
pp. 5063
Author(s):  
Katinka H. Evensen ◽  
Helena Nordh ◽  
Ramzi Hassan ◽  
Aslak Fyhri
Keyword(s):  
Field Study ◽  
Field Experiments ◽  
Landscape Design ◽  
Urban Environments ◽  
Space Management ◽  
Perceived Safety ◽  
Urban Green Spaces ◽  
Outdoor Spaces ◽  
Surrounding Areas ◽  
The Impact

Access to safe, green urban environments is important for quality of life in cities. The objective of this study is to explore the impact of a safety-enhancing landscape design measure on visitors’ experiences in an urban park. Additionally, this paper combines the use of field and virtual reality (VR) experiments, contributing methodological insights into how to evaluate safety measures in green space management and research on perceived safety. In a field experiment (n = 266), we explored whether the height of a hedge along a pathway influenced perceived safety among users. The field study showed that cutting down the hedge improved the perceived prospect of the immediate surrounding areas for female users, which again made them feel safer in the park. We developed a VR experiment for an evening scenario in the same environment (n = 19) to supplement the field study and test the effect of the intervention further. The VR experiment also found a gender effect on perceived safety, with females reporting lower perceived safety, but no effect was shown for the height of the hedge. The results in this study show that environmental attributes such as perceived prospect and concealment should be considered in the design and management of urban green spaces. Additionally, this research demonstrates an approach to conducting field experiments to test the effects of actual design interventions and then further developing these experiments using VR technology. Further research on perceived safety in outdoor spaces is needed to make use of this combined method’s potential.

scholarly journals Occurrence of mycotoxins in selected agricultural and commercial products available in eastern Poland

2021 ◽  
Vol 19 (1) ◽  
pp. 653-664
Author(s):  
Grażyna Kowalska ◽  
Radosław Kowalski
Keyword(s):  
Ochratoxin A ◽  
Aflatoxin B1 ◽  
Extraction Method ◽  
Maximum Allowable Concentration ◽  
Commercial Products ◽  
Ms Analysis ◽  
Rye Flour ◽  
Three Samples ◽  
Aflatoxin B2

Abstract The objective of this study was the estimation of the content of 13 mycotoxins (diacetoxyscirpenol, T-2 toxin, HT-2 toxin, nivalenol, deoxynivalenol, 3-acetyldeoxynivalenol, fusarenone X, aflatoxin B1, aflatoxin B2, aflatoxin G1, aflatoxin G2, ochratoxin A, and zearalenone) in various products from the eastern part of Poland. The content of mycotoxins in the analysed samples was assayed using the extraction method combined with HPLC-MS/MS analysis. We found mycotoxins in 25 of the 92 samples tested (27%). Contamination with mycotoxins was noted most frequently in samples of cereals – 56% – and also in samples of flour and cocoa, in which a content of mycotoxins was noted in 24 and 16% of the samples, respectively. The most frequently identified were the following – deoxynivalenol detected in 18 samples (72%), zearalenone detected in eight samples (32%), toxin HT-2 detected in four samples (16%), ochratoxin A identified in three samples (12%), and toxin T-2 detected in one sample (4%). In one analysed sample of mixed flour and in one analysed sample of wheat and rye flour, the maximum allowable concentration was exceeded in the case of two identified mycotoxins – deoxynivalenol (2,250 μg/kg) and ochratoxin A (15.6 and 17.1 μg/kg).

scholarly journals Social values and public procurement in health: can ‘smart’ procurement enhance justice in health?

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
V Mezeiova
Keyword(s):  
Case Law ◽  
Social Aspect ◽  
Health It ◽  
Health Governance ◽  
Ethics And Economics ◽  
Economics Of Health ◽  
Effectiveness And Efficiency ◽  
Health Justice ◽  
The Impact ◽  
The Eu

Abstract Governments spend 29% of total expenditure on procurement while the second largest area is health. However, the important question is what the impact of these expenditures on health is. Can one buy health justice through procurement? In order to answer this issue, the study firstly analyses theory of global health governance to substantiate whether procurement is a health governance tool whose efficiency and effectiveness determines health outcomes. Secondly, health as a social aspect is scrutinised because its governance and procurement have to be driven by a normative value. Within the study, health justice is justified to be such a value as it is a significant public health factor in practice. Following this normative claim, the study uses analysis of legislation, case law and examples from procurement practice to show whether procurement law can enhance health justice. In terms of methodology, the study establishes a normative framework of governance in health, health justice and procurement. On that basis, it distinguishes procurement categories (procurement of health, and procurement for health) and concludes what it is in procurement that health justice is transformed into. In order to answer the core research question, the study analyses harmonised transnational EU legislation, policy, case law of the CJEU, and examples from practice through stages of supply framework - at input, output and outcome. The study leads to a conclusion that procurement serves as a tool of governance in health. In order to reach effectiveness and efficiency of procurement in health, it is submitted that procurement needs to reflect on the argument of ethics and economics of health. Health inequalities are an operationalized factor to reach this. The EU procurement law enables to consider health justice. However, it is restricted by the requirement of proportionality. Therefore, health justice is perceived as distortion, rather than a goal of competition to be enhanced. Key messages In order to reach effectiveness and efficiency of procurement in health, it is submitted that procurement needs to reflect on argument of ethics and economics of health. The EU procurement law enables to consider health justice. However, it is rather perceived as distortion, than a goal of competition to be enhanced.

scholarly journals Microbiota Alterations in Precancerous Colon Lesions: A Systematic Review

Cancers ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 3061
Author(s):  
Francesca Aprile ◽  
Giovanni Bruno ◽  
Rossella Palma ◽  
Maria Teresa Mascellino ◽  
Cristina Panetta ◽  
...  
Keyword(s):  
Cancer Progression ◽  
Endoscopic Resection ◽  
Causative Role ◽  
Health It ◽  
Microbial Dysbiosis ◽  
Pubmed Database ◽  
The Impact ◽  
The Relationship ◽  
Preventive Role

Gut microbiota plays an important role in human health. It may promote carcinogenesis and is related to several diseases of the gastrointestinal tract. This study of microbial dysbiosis in the etiology of colorectal adenoma aimed to investigate the possible causative role of microbiota in the adenoma–carcinoma sequence and its possible preventive role. A systematic, PRISMA-guided review was performed. The PubMed database was searched using “adenoma microbiota” and selecting original articles between January 2010 and May 2020 independently screened. A higher prevalence of Proteobacteria, Fusobacteria, and Bacteroidetes phyla was observed in the fecal luminal and mucosa-associated microbiota of patients with adenoma. However, other studies provided evidence of depletion of Clostridium, Faecalibacterium, Bacteroides and Romboutsia. Results on the relationship between adenoma endoscopic resection and microbiota were inconsistent. In conclusion, none of the analyzed studies developed a predictive model that could differentiate adenoma from non-adenoma patients, and therefore, to prevent cancer progression. The impact of adenoma’s endoscopic resection on microbiota was investigated, but the results were inconclusive. Further research in the field is required.

scholarly journals A GNSS-IR Method for Retrieving Soil Moisture Content from Integrated Multi-Satellite Data That Accounts for the Impact of Vegetation Moisture Content

2021 ◽  
Vol 13 (13) ◽  
pp. 2442
Author(s):  
Jichao Lv ◽  
Rui Zhang ◽  
Jinsheng Tu ◽  
Mingjie Liao ◽  
Jiatai Pang ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Satellite Data ◽  
Vegetation Index ◽  
Soil Moisture Content ◽  
Support Vector ◽  
Observation Data ◽  
Multipath Effect ◽  
Mars Model ◽  
The Impact

There are two problems with using global navigation satellite system-interferometric reflectometry (GNSS-IR) to retrieve the soil moisture content (SMC) from single-satellite data: the difference between the reflection regions, and the difficulty in circumventing the impact of seasonal vegetation growth on reflected microwave signals. This study presents a multivariate adaptive regression spline (MARS) SMC retrieval model based on integrated multi-satellite data on the impact of the vegetation moisture content (VMC). The normalized microwave reflection index (NMRI) calculated with the multipath effect is mapped to the normalized difference vegetation index (NDVI) to estimate and eliminate the impact of VMC. A MARS model for retrieving the SMC from multi-satellite data is established based on the phase shift. To examine its reliability, the MARS model was compared with a multiple linear regression (MLR) model, a backpropagation neural network (BPNN) model, and a support vector regression (SVR) model in terms of the retrieval accuracy with time-series observation data collected at a typical station. The MARS model proposed in this study effectively retrieved the SMC, with a correlation coefficient (R2) of 0.916 and a root-mean-square error (RMSE) of 0.021 cm3/cm3. The elimination of the vegetation impact led to 3.7%, 13.9%, 11.7%, and 16.6% increases in R2 and 31.3%, 79.7%, 49.0%, and 90.5% decreases in the RMSE for the SMC retrieved by the MLR, BPNN, SVR, and MARS model, respectively. The results demonstrated the feasibility of correcting the vegetation changes based on the multipath effect and the reliability of the MARS model in retrieving the SMC.

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