scholarly journals Quality characterization of bread retailed in Nairobi county, Kenya: Physico-chemical and microbial profiles

2020 ◽  
Vol 20 (06) ◽  
pp. 16810-16817
Author(s):  
HA Aftin ◽  
◽  
GO Abong' ◽  
MW Okoth ◽  
◽  
...  
Keyword(s):  
Product Quality ◽  
Water Activity ◽  
Urban Areas ◽  
Product Diversification ◽  
Sub Saharan Africa ◽  
White Bread ◽  
Food Fraud ◽  
Total Solids ◽  
Physico Chemical ◽  
Brown Bread

With the ever-increasing intake and diversification of bread in sub-Saharan Africa, greater risks of food fraud are posed. The risks are even higher in the urban areas where both the formal and informal retail exist. Product diversification induced by incorporation of different ingredients in bread processing aggravates the risk of malpractices in processing that is evidenced in product quality. The current study employed a cross-sectional survey of bread retailed in the fourteen supermarkets located in Nairobi County, Kenya to determine their physico-chemical and microbiological characteristics. The study showed that brown bread had significantly (p<0.001) higher moisture and water activity, although the fibre and total solids in the brown bread were significantly (p<0.01) lower than the white bread. The greatest variability in the physico-chemical attributes was found in the acid insoluble ash, with a coefficient of variation of 82.04%. The highest proportion of the bread, 58.9%, fell short of meeting the regulatory stipulations of the acid insoluble ash. Significantly (p<0.05) higher proportion of the brown bread (60.7%) than the white bread (4.4%) had crude fibre contents less optimal than the regulatory stipulations. The greatest adherence to product quality stipulations was found in yeast and mould counts (100%), moisture content (99.1%) and pH aqueous extract (95.5%). Both the brands of bread and retail outlets had quarter of them recording higher moisture, water activity and total acid insoluble ash than the averages of breads traded in supermarkets; whereas the pH, fibre and total solids were lower(kmean clusters=2). Eight principal components maximally explained product variability in the breads, with similar trends of composition between moisture and protein, and fibre and total solids,whereby the latter pair had a negative correlation with the former. In conclusion, the study found that the formal sector still falls short of product quality regulatory stipulations,pointing to greater need to strengthen surveillance component of food control for this sector.

scholarly journals The consumption of rye bread and white bread as dimensions of health lifestyles in Finland

2001 ◽  
Vol 4 (3) ◽  
pp. 813-819 ◽  
Author(s):  
Ritva Prättälä ◽  
Ville elasoja ◽  
Hannu Mykkänen
Keyword(s):  
Urban Areas ◽  
White Bread ◽  
Unhealthy Lifestyle ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Female Population ◽  
Rye Bread ◽  
Health Related ◽  
Brown Bread ◽  
Socio Demographic Factors

AbstractObjective:The aim of this research was to describe the variation in bread consumption within social classes and to link this consumption to health-related lifestyles in Finland from 1978 until 1998.Design:A cross-sectional survey on health-related behaviour and socio-demographic factors has been conducted annually since 1978.Setting:Mailed questionnaire.Subjects:A random sample of 5000 Finns aged 15–64 years has been drawn annually. The response rate has varied from 84% to 68%.Results:The consumption of rye bread decreased, but among the female population a slight increase appeared in the 1990s. The consumption of rye bread was associated with a low educational level and a rural place of residence. White bread was consumed less than was rye bread. White bread was consumed more frequently by the less educated in urban areas. Contrary to white bread, the consumption of rye bread was not associated with smoking, exercise or alcohol consumption.Conclusions:The traditional place of rye bread in the Finnish dietary pattern has remained rather constant. White bread consumption has been associated with an unhealthy lifestyle. As a result, those Finns who are concerned about their health avoid white bread but seem not to associate rye bread with a healthier lifestyle. In Finland, rye bread has a different image to the image of whole-grain or dark brown bread in many other western European countries.

Managing African Urbanization in the Context of Environmental Change

2014 ◽  
Vol 2 (2) ◽  
Author(s):  
Shuaib Lwasa
Keyword(s):  
Climate Change ◽  
Economic Growth ◽  
Social Services ◽  
Urban Areas ◽  
Urban Governance ◽  
Sub Saharan Africa ◽  
African Countries ◽  
Sub Saharan ◽  
Urbanization Rate ◽  
Development And Management

Africa’s urbanization rate has increased steadily over the past three decades and is reported to be faster than in any other region in the world . It is estimated that by 2030, over half of the African population will be living in urban areas . But the nature of Africa’s urbanization and subsequent form of cities is yet to be critically analyzed in the context of city authorities’ readiness to address the challenges . Evidence is also suggesting that urbanization in African countries is increasingly associated with the high economic growth that has been observed in the last two decades . Both underlying and proximate drivers are responsible for the urbanization, and these include population dynamics, economic growth, legislative designation, increasing densities in rural centers, as well as the growth of mega cities such as Lagos, Cairo and Kinshasa, that are extending to form urban corridors . With the opportunities of urbanization in Sub–Saharan Africa, there are also challenges in the development and management of these cities . Those challenges include provision of social services, sustainable economic development, housing development, urban governance, spatial development guidance and environmental management, climate change adaptation, mitigation and disaster risk reduction . The challenge involves dealing with the development and infrastructure deficit, in addition to required adaption to and mitigation of climate change . This paper examines the current state of urban management in Africa .

scholarly journals Mapping 20 Years of Urban Expansion in 45 Urban Areas of Sub-Saharan Africa

2021 ◽  
Vol 13 (3) ◽  
pp. 525
Author(s):  
Yann Forget ◽  
Michal Shimoni ◽  
Marius Gilbert ◽  
Catherine Linard
Keyword(s):  
Case Studies ◽  
Urban Areas ◽  
Urban Expansion ◽  
Local Population ◽  
Sub Saharan Africa ◽  
Annual Growth Rate ◽  
Urban Dynamics ◽  
Mapping Approach ◽  
Sub Saharan ◽  
The Impact

By 2050, half of the net increase in the world’s population is expected to reside in sub-Saharan Africa (SSA), driving high urbanization rates and drastic land cover changes. However, the data-scarce environment of SSA limits our understanding of the urban dynamics in the region. In this context, Earth Observation (EO) is an opportunity to gather accurate and up-to-date spatial information on urban extents. During the last decade, the adoption of open-access policies by major EO programs (CBERS, Landsat, Sentinel) has allowed the production of several global high resolution (10–30 m) maps of human settlements. However, mapping accuracies in SSA are usually lower, limited by the lack of reference datasets to support the training and the validation of the classification models. Here we propose a mapping approach based on multi-sensor satellite imagery (Landsat, Sentinel-1, Envisat, ERS) and volunteered geographic information (OpenStreetMap) to solve the challenges of urban remote sensing in SSA. The proposed mapping approach is assessed in 17 case studies for an average F1-score of 0.93, and applied in 45 urban areas of SSA to produce a dataset of urban expansion from 1995 to 2015. Across the case studies, built-up areas averaged a compound annual growth rate of 5.5% between 1995 and 2015. The comparison with local population dynamics reveals the heterogeneity of urban dynamics in SSA. Overall, population densities in built-up areas are decreasing. However, the impact of population growth on urban expansion differs depending on the size of the urban area and its income class.

scholarly journals Estimating Environmental Contamination and Element Deposition at an Urban Area of Central Italy

Urban Science ◽  
2019 ◽  
Vol 3 (3) ◽  
pp. 76 ◽  
Author(s):  
Stefano Loppi ◽  
Adelmo Corsini ◽  
Luca Paoli
Keyword(s):  
Urban Area ◽  
Environmental Contamination ◽  
Urban Areas ◽  
Central Italy ◽  
Protective Role ◽  
Evernia Prunastri ◽  
Physico Chemical ◽  
Living Organisms ◽  
Study Sites ◽  
Economic Constraints

Air quality monitoring in many urban areas is based on sophisticated and costly equipment to check for the respect of environmental quality standards, but capillary monitoring is often not feasible due to economic constraints. In such cases, the use of living organisms may be very useful to complement the sparse data obtained by physico-chemical measurements. In this study, the bioaccumulation of selected trace elements (Al, As, Cd, Ce, Cr, Cu, Fe, Ni, Pb, S, Sb, Zn) in lichen samples (Evernia prunastri) transplanted for three months at an urban area of Central Italy was investigated to assess the main environmental contaminants, their sources, and the fluxes of element depositions. The results pinpointed Cu and Sb as the main contaminants and suggested a common origin for these two elements from non-exhaust sources of vehicular traffic, such as brake abrasion. Most study sites were, however, found to be subjected to low or moderate environmental contamination, and the lowest contamination corresponded to the main green areas, confirming the important protective role of urban forests against air pollution. Ranges of estimated mean annual element deposition rates in the study area were similar or lower than those reported for other urban areas.

The Urban Transition in Sub-Saharan Africa: Challenges and Opportunities

10.1068/c3p ◽  
2007 ◽  
Vol 25 (4) ◽  
pp. 466-485 ◽  
Author(s):  
Christine Kessides
Keyword(s):  
Urban Areas ◽  
Local Governments ◽  
Poverty Reduction ◽  
National Development ◽  
Favourable Outcome ◽  
Sub Saharan Africa ◽  
Urban Transition ◽  
Energy Needs ◽  
Challenges And Opportunities ◽  
Sub Saharan

In this paper I ask how the ongoing processes of urban and local government development in Sub-Saharan Africa can and should benefit the countries, and what conditions must be met to achieve this favourable outcome. The region faces close to a doubling of the urban population in fifteen years. This urban transition poses an opportunity as well as a management challenge. Urban areas represent underutilised resources that concentrate much of the countries' physical, financial, and intellectual capital. Therefore it is critical to understand how they can better serve the national growth and poverty reduction agendas. The paper challenges several common ‘myths’ that cloud discourse about urban development in Africa. I also take a hard look at what the urban transition can offer national development, and what support cities and local governments require to achieve these results. I argue that, rather than devoting more attention to debating the urban contribution to development in Africa, real energy needs to be spent unblocking it.

Apolipoprotein E ϵ4 allele and neuropsychiatric symptoms among older adults in Central Africa (EPIDEMCA study)

2021 ◽  
Vol 33 (3) ◽  
pp. 295-306 ◽  
Author(s):  
Inès Yoro-Zohoun ◽  
Dismand Houinato ◽  
Philippe Nubukpo ◽  
Pascal Mbelesso ◽  
Bébène Ndamba-Bandzouzi ◽  
...  
Keyword(s):  
Older People ◽  
Apolipoprotein E ◽  
Urban Areas ◽  
Neuropsychiatric Symptoms ◽  
Central Africa ◽  
Complete Information ◽  
Population Based ◽  
Sub Saharan Africa ◽  
Two Phase ◽  
Community Screening

AbstractObjectives:To evaluate the association between neuropsychiatric symptoms and apolipoprotein E (APOE) ϵ4 allele among older people in Central African Republic (CAR) and the Republic of Congo (ROC).Design:Multicenter population-based study following a two-phase design.Setting:From 2011 to 2012, rural and urban areas of CAR and ROC.Participants:People aged 65 and over.Measurements:Following screening using the Community Screening Interview for Dementia, participants with low cognitive scores (CSI-D ≤ 24.5) underwent clinical assessment. Dementia diagnosis followed the DSM-IV criteria and Peterson’s criteria were considered for Mild Cognitive Impairment (MCI). Neuropsychiatric symptoms were evaluated through the brief version of the Neuropsychiatric Inventory (NPI-Q). Blood samples were taken from all consenting participants before APOE genotyping was performed by polymerase chain reaction (PCR). Logistic regression models were used to evaluate the association between the APOE ϵ4 allele and neuropsychiatric symptoms.Results:Overall, 322 participants had complete information on both neuropsychiatric symptoms and APOE status. Median age was 75.0 years and 81.1% were female. Neuropsychiatric symptoms were reported by 192 participants (59.8%) and at least 1 APOE ϵ4 allele was present in 135 (41.9%). APOE ϵ4 allele was not significantly associated with neuropsychiatric symptoms but showed a trend toward a protective effect in some models.Conclusion:This study is the first one investigating the association between APOE ϵ4 and neuropsychiatric symptoms among older people in sub-Saharan Africa (SSA). Preliminary findings indicate that the APOE ϵ4 allele was not associated with neuropsychiatric symptoms. Further research seems, however, needed to investigate the protective trend found in this study.

Migration as a Risk Factor for HIV Infection among Youths in Sub-Saharan Africa

2013 ◽  
Vol 648 (1) ◽  
pp. 136-158 ◽  
Author(s):  
Monica A. Magadi
Keyword(s):  
Risk Factor ◽  
Hiv Infection ◽  
Urban Areas ◽  
Young Female ◽  
Sub Saharan Africa ◽  
Demographic And Health Surveys ◽  
Country Level ◽  
Female Migrants ◽  
Sub Saharan ◽  
Living With Hiv

Of the estimated 10 million youths living with HIV worldwide, 63 percent live in sub-Saharan Africa. This article focuses on migration as a risk factor of HIV infection among the youths in sub-Saharan Africa. The study is based on multilevel modeling, applied to the youth sample of the Demographic and Health Surveys (DHS), conducted from 2003 to 2008 in nineteen countries. The analysis takes into account country-level and regional-level variations. The results suggest that across countries in sub-Saharan Africa, migrants have on average about 50 percent higher odds of HIV infection than nonmigrants. The higher risk among migrants is to a large extent explained by differences in demographic and socioeconomic factors. In particular, migrants are more likely to be older, to have been married, or to live in urban areas, all of which are associated with higher risks of HIV infection. The higher risk among youths who have been married is particularly pronounced among young female migrants.

scholarly journals Study on the Effect of the Breed during Post-Partum Transition Period on Various Physico-Chemical, Compositional and Microbiological Characteristics of Bovine Colostrum

2020 ◽  
Vol 39 (01) ◽  
Author(s):  
Tahir Nazir ◽  
Mohammad Ashraf Pal ◽  
Ashaq Manzoor ◽  
Tarique Padder ◽  
Asif Hassan Sofi ◽  
...  
Keyword(s):  
Total Protein ◽  
Transition Period ◽  
Fat Content ◽  
Bovine Colostrum ◽  
Plate Count ◽  
Total Protein Content ◽  
Total Solids ◽  
Microbiological Characteristics ◽  
Physico Chemical ◽  
Casein Protein

The current investigation was undertaken with the aim of studying the effect of breed of the animal on various physico-chemical, compositional and microbiological characteristics of bovine colostrum. While studying the effect of breed of the animal on various physico-chemical, compositional and microbiological characteristics of colostrum, it was found that the specific gravity, fat, total protein, casein protein, whey proteins, Lactose, total solids and solids not fat of the colostrum samples from local non-descript animals were significantly (p £ 0.05) lower compared to all other animal sources (breeds) under study. The fat content of Jersey cross (fi) [Jersey cross under field conditions] was significantly (p £ 0.05) higher than Jersey cross (fa) [Jersey cross under farm conditions]. Total protein content of Jersey and Jersey cross (fi) were found to be comparable however both these samples were found to be possessing significantly (p £ 0.05) higher values than Jersey cross (fa). Casein protein of Jersey and Jersey cross (fi) was found to be comparable however both these samples were found to be possessing significantly (p £ 0.05) higher values than Jersey cross (fa). Lactose content of Jersey was significantly (p £ 0.05) higher than Jersey cross (fi). Total solids content of Jersey cross (fi) was significantly (p £ 0.05) higher than Jersey cross (fa). Jersey cross (fi) possessed significantly (p £ 0.05) higher solids not fat content than Jersey cross (fa) and the values were found to be comparable with Jersey colostrum samples. The pH values of colostrum samples of Jersey were seen to be significantly (p £ 0.05) higher than all other sources of colostrum viz Local, Jersey cross (fa) and Jersey cross (fi). Amongst the latter three, the values were found to be comparable. The ash, electrical conductivity and total plate count (TPC) of the colostrum samples of the animal sources under study were found to be possessing comparable values having no significant (p greator than 0.05) difference among themselves whatsoever.

scholarly journals IMPACT OF THEILERIOSIS ON MILK IN NATURALLY INFECTED COWS AND BUFFALOES AT HYDERABAD

2017 ◽  
Vol 5 (8) ◽  
pp. 36-42
Author(s):  
M.I. Memon ◽  
Memon ◽  
Kachiwal ◽  
Soomro ◽  
Meh- ja- been Memon ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Urban Areas ◽  
Infected Cattle ◽  
Financial Loss ◽  
Total Solids ◽  
Financial Losses

Study was conducted to investigate the consequences of Theileriosis in naturally infected cattle and buffaloes of urban and peri urban areas of Hyderabad. Chemical analysis of milk of infected cows and buffaloes revealed that protein, ash and lactose were significantly declined (P<0.05) whereas, fat and total solids were significantly increased (P<0.05) in Theileria infected cows and buffaloes, but pH and acidity was unaffected. Financial losses occur in terms of reduced quality and severely decreased quantity of milk and meat. The total financial loss including the mortality and decreased quantity of milk and meat was recorded of Rs. 0.17 million / animal in the current study. Theileriosis is one of the main causes of financial losses for livestock holders.

scholarly journals GAP FILLERS OR PIONEERS: INFORMAL WATER SUPPLIERS IN PERI-URBAN AREAS OF THE TECHIMAN MUNICIPALITY OF GHANA

2021 ◽  
Vol 8 (1) ◽  
pp. 525-539
Author(s):  
Lydia Kwoyiga
Keyword(s):  
Urban Areas ◽  
Water Distribution ◽  
Water Source ◽  
Water Quality Monitoring ◽  
Distribution Networks ◽  
Sub Saharan Africa ◽  
Formal Sector ◽  
Public Provision ◽  
Sub Saharan ◽  
Municipal Assembly

There is continuous expansion and growth of urban and peri urban areas in Sub-Saharan Africa with projections indicating that this will double. Some peri-urban areas such as those in the Techiman municipality of Ghana are experiencing this trend. Nonetheless, the spate of growth of these areas outstrips the supply of utilities by municipal water distribution networks. As a result, some areas have little or no public provision. In order to address the water supply challenge, places with favourable hydrological settings are witnessing the emergence of informal water suppliers as “gap fillers” or “pioneers”, providing water services. Noteworthy, however, existing studies about informal water suppliers in peri-urban areas in Ghana lump them together, without considering the water source. This study differs in that it specifically examines the evolution and the features of informal water suppliers who privately and independently abstract and supply groundwater. Additionally, it attempts to understand the nature of informality of the suppliers and the possibility of formalisation. The paper is an exploratory study using the case of private mechanised borehole operators who supply water in their respective areas. The findings showed that in some peri-urban areas in the Techiman municipality, some dwellers constructed and operated mechanised boreholes, which provide in-situ water and utilities to others. They are mostly pioneer water suppliers in some of the areas. Their services are informal by nature because they are largely independent of the formal sector and apply informal arrangements in rendering their services. Seen also as business enterprises, they are not licenced. However, the boreholes are registered with the Municipal Assembly, which indicated some level of formalisation. The study recommended that efforts to formalise them further should focus on improving water quality monitoring for consumption and promoting sustainable abstraction.

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