Littérature scientifique sur le sujet « African Sesame »

Salinization is a global environmental problem. It is particularly prevalent in Africa in areas with a low rainfall trend such as the Senegalese groundnut basin where 20% of the land is affected. It reduces global food production by more than 10%. In Senegal, sesame (Sesamum indicum L.) moderately tolerant to drought and salinity is increasingly cultivated. It is an alternative to fight poverty in rural areas and allows the revaluation of salty land. The objective of this work is to evaluate at the early stage of reproduction the effect of salinity on the chlorophyll and ion (Na+ and Cl−) contents of four African varieties of sesame. The experimental device consists of randomized blocks with two factors and three repetitions. The sesame variety factor consists of four modalities (AS09, AS14, AS15 and AS25). The salinity factor or abiotic stress (NaCl) includes three modalities (0 mM, 17 mM and 34 mM). The parameters evaluated are the contents of Na+ and Cl− ions and of chlorophylls (Chl a, Chl b and total Chl). The results showed that the contents of chlorophylls (Chl a, Chl b and Chl) and Cl− and Na+ ions of sesame leaves increased with NaCl at 44 days after sowing. The Cl− contents of sesame leaves are higher than those of Na+ in all treatments. Chlorophyll increased with sesame varieties and salinity. Variety AS15 produced the greatest amounts of chlorophyll. Sesame, an inclusive-type plant, compartmentalizes Cl− and Na+ ions at the leaf level in vacuoles. He developed a tissue tolerance to salinity.

Perilla and sesame are traditional sources of edible oils in Asian and African countries. In addition, perilla and sesame seeds are rich sources of health-promoting compounds, such as fatty acids, tocopherols, phytosterols and policosanols. Thus, developing a method to determine the geographic origin of these seeds is important for ensuring authenticity, safety and traceability and to prevent cheating. We aimed to develop a discriminatory predictive model for determining the geographic origin of perilla and sesame seeds using comprehensive metabolite profiling coupled with chemometrics. The orthogonal partial least squares-discriminant analysis models were well established with good validation values (Q2 = 0.761 to 0.799). Perilla and sesame seed samples used in this study showed a clear separation between Korea and China as geographic origins in our predictive models. We found that glycolic acid could be a potential biomarker for perilla seeds and proline and glycine for sesame seeds. Our findings provide a comprehensive quality assessment of perilla and sesame seeds. We believe that our models can be used for regional authentication of perilla and sesame seeds cultivated in diverse geographic regions.

African bollwormis a worldwide-spread species that shows a high degree of polyphagia and it is considered as one of the main agricultural pests in the world. Laboratory experiments were conducted in the Research Laboratory, College of Agricultural Studies, Sudan University of Science and Technology to evaluate the lethal effect of C. rotundusand D. stramonium on the H. armigeraand to investigate the synergistic effect of sesame oil and tested extracts by dipping methods. Five concentrations (4%, 6%, 8%, 10% and 12%) were used for each plant extract in a Completely Randomized Design. Tubers ethanolic extract of C. rotundus at 12% concentration caused 90% mortality after 72 hrs of application, whereas 12% concentration of seeds ethanolic extract of D. stramonium generate only 70% mortality after 72 hrs of exposure. When sesame oil was added to each concentration of ethanolic extract of C. rotundus and D. stramonium it exhibited a synergistic effect. In fact, the 10% concentration scored 53.3% and 76.7% mortality, however, when mixed with sesame oil the mortality increased significantly to 83.3% and 100% for D. stramonium and C. rotundus respectively after 72 hrs of exposure. This study clearly demonstrates that both tested plants have a lethal effect on the larvae of the African bollworm. However, tubers ethanolic extract of C. rotundus seems to be significantly more toxic than the seeds ethanolic extract of D. stramonium. This study also revealed that sesame oil has a synergistic effect when added to these plant extracts.

Abstract. Sesame and chickpea are important crops in Ethiopia because both are major export crops that generate much revenue for both small farmers and the country as a whole. However, there is a lack of information about the fundamental equilibrium moisture content (EMC) relationships among these crops, which would help facilitate better monitoring and storage. Therefore, EMC adsorption and desorption prediction models based on temperature (T) and relative humidity (RH) were developed for the modified Chung-Pfost and modified Henderson models for Kabuli chickpea (KC), black sesame (BS), and white sesame (WS) seeds. The samples for conducting the adsorption and desorption tests were conditioned to various moisture content (MC) levels for the EMC test models. The samples (~500 g) were placed in multiple sealed enclosures equipped with T and RH sensors, which were placed in an environmental chamber where they were exposed to three temperatures (15°C, 25°C, and 35°C). The MCdb ranges used for model development for adsorption and desorption were, respectively, 11.6% to 19.5% and 8.9% to 16.9% for KC samples, 5.0% to 8.7% and 4.3% to 6.9% for BS, and 4.2% to 8.7% and 3.5% to 7.6% for WS. Nonlinear regression was used to determine the model coefficients for the modified Henderson and modified Chung-Pfost equations. The prediction statistics for the adsorption and desorption models yielded an SEE of, respectively, 0.53% and 0.68% MCdb for KC, 0.23% and 0.13% for BS, and 0.28% and 0.25% for WS. The model coefficients obtained in this study will be used in a moisture meter based on EMC measurement, which is currently being used as part of a USAID postharvest project in various African and Asian countries. These EMC models may also be important for other grain operations, which include harvesting, drying, storage, conditioning, and processing. Keywords: Adsorption, Chickpea, Desorption, EMC, Equilibrium moisture content, Sesame.

From the 1770s to the 1880s agriculturists and cooks sought to develop culinary oils from plants. Thomas Jefferson's attempts to introduce the olive into the agriculture of the United States, as a partial substitute for lard in cookery and as a cheap oleo for the consumption of slaves, met with limited success, even in the southeast, because periodic freezes and high humidity thwarted the development of groves. Southern slaves from West Africa supplied their own oil, derived from benne (Sesamum indicum). Benne oil was merely one feature of an elaborate African-American cuisine employing sesame that included benne soup, benne and greens, benne and hominy, benne candy, and benne wafers. Only the last item has survived as a feature of regional and ethnic cookery. In the first decades of the nineteenth century, planter experimentalists began the commercial scale production of benne oil, establishing it as the primary salad oil and the second favored frying medium in the southern United States. It enjoyed acceptance and moderate commercial success until the refinement of cottonseed oil in the 1870s and 1880s. Cotton seed, a waste product of the south's most vital industry, was turned into a revenue stream as David Wesson and other scientists created a salad oil and frying medium designedly tasteless and odorless, and a cooking fat, hydrogenated cottonseed oil (Cottonlene or Crisco) that could cheaply substitute for lard in baking. With the recent recovery of regional foodways, both the olive and sesame are being revived for use in the neo-southern cookery of the twenty-first century.

Globally, there is growing interest to integrate insect-derived ingredients into food products. Knowledge of consumer perception to these food products is growing rapidly in the literature, but similar knowledge on the use of oils from African edible insects remains to be established. In this study, we (1) compared the chemistry of the oils from two commonly consumed grasshoppers, the desert locust Schistocerca gregaria and the African bush-cricket Ruspolia differens with those of olive and sesame oils; (2) compared the proximate composition of a baked product (cookie) prepared from the oils; (3) identified the potential volatiles and fatty acids contributing to the aroma and taste; and (4) examined acceptance and willingness to pay (WTP) for the baked product among consumers with no previous experience of entomophagy. Our results showed that the insect oils were compositionally richer in omega-3 fatty acids, flavonoids, and vitamin E than the plant oils. Proximate analysis and volatile chemistry revealed that differences in aroma and taste of the cookies were associated with their sources of oils. Consumers’ acceptance was high for cookies prepared with R. differens (95%) and sesame (89%) oils compared to those with olive and S. gregaria oils. Notably, cookies prepared with insect oils had more than 50% dislike in aroma and taste. Consumers’ willingness to pay for cookies prepared with insect oils was 6–8 times higher than for cookies containing olive oil, but 3–4 times lower than cookies containing sesame oil. Our findings show that integrating edible insect oils into cookies, entices people to ‘‘take the first step” in entomophagy by decreasing insect-based food products neophobia, thereby, contributing to consumers’ acceptance of the baked products. However, future research should explore the use of refined or flavored insect oils for bakery products to reduce off-flavors that might have been perceived in the formulated food products

We discuss the role that synchrotron light sources, such as SESAME, could play in improving the socioeconomic conditions in developing countries. After providing a brief description of a synchrotron light source, we discuss the important role that they played in the development of several economically emerging countries. Then we describe the state of synchrotron science in South Africa and that country’s leadership role in founding the African Light Source initiative. Next, we highlight a new initiative called Lightsources for Africa, the Americas & Middle East Project, which is a global initiative led by the International Union of Pure and Applied Physics and the International Union of Crystallography, with initial funding provided by the International Council for Science. Finally, we comment on a new technology called the multibend achromat that has launched a new paradigm for the design of synchrotron light sources that should be attractive for construction in developing countries.

Declining crops yield in the smallholder farmers cropping systems of sub-Saharan African (SSA) present the need to develop more sustainable production systems. Depletion of essential plant nutrients from the soils have been cited as the main contributing factors due to continues cultivation of cereal crops without application of organic/ inorganic fertilizers. Field experiments to evaluate effect of phosphorus (P) fertilizers, organic and integration of legumes in sorghum cropping systems on soil, available nitrogen (N) and P, were conducted in Busia County of Kenya during the short (SRS) and long rain seasons (LRS) of 2016 and LRS of 2017 respectively. The experiments comprised either soybean, common bean groundnut or sesame grown with sorghum. The design was a split plot in a randomized complete block design. Main plots were fertilizer inputs; Mavuno, FYM or their combination. Subplots comprised of the legume intercrops mentioned above. Application of Mavuno, FYM or their combination resulted in significantly higher legume, sesame crop yields above the control in the second season. Legume crops due to their N-fixation, litter fall and mineralization made availability of P and N. possible. Application of Mavuno, FYM or their combination gave comparable results with respect to the intercrop yields. Since FYM and (Mavuno+FYM) is cheaper than Mavuno, growing either soybean, common bean groundnut or sesame intercropping system with sorghum with application of the above is recommended for improved legume grain yields and soil fertility improvement.

In 2005, an extensive survey of bacterial wilt in Cameroon collected 110 strains of Ralstonia solanacearum from wilting tomato, potato, pepper, huckleberry (Solanum scabrum), sesame, and amaranth. The genetic diversity and phylogeny of selected strains from Cameroon were assessed by multiplex–polymerase chain reaction (PCR), race 3/biovar 2–specific PCR, and sequence analyses of the mutS and egl genes. These data were compared with those from 33 reference strains covering the known diversity within the R. solanacearum species complex. Strains isolated in Cameroon clustered into three of the four known phylotypes: I (Asian), II (American), and III (African). Lowland tomato strains belonged to phylotype I and were quite homogeneous. The strains belonging to phylotype II were genetically diverse, and partitioned into subclusters IIA and IIB (sequevar 1, race 3/biovar 2). Cameroon strains in the African phylotype III were distinct from reference strains from Zimbabwe or the Indian Ocean, highlighting the genetic diversity present within this phylotype. Strains from potatoes growing in the highlands of West Cameroon fell into both phylotypes II (race 3/biovar 2) and III. These phylotype II and III highland strains attacked both potato and tomato and could therefore pose an economic threat to potato and tomato crops throughout Central Africa. This is the first comprehensive report on the genetic diversity of R. solanacearum strains in Cameroon.

Urbanization in Africa is growing at a rapid pace and so is the population growth. Cities in Africa are struggling to cope with the demand that urban migration brings. For example, Africa has over 60% of her population located in the urban areas. These urban locations are sprawling slums due to the massive influx of people and inadequate housing systems. The United Nations, through the Sustainable Development Goals called for a sustainable cities and communities. This project is focus on using the smart city approach to tackle these urbanization issues. With the advancement in satellite application systems, smart cities can be enabled through space technology to address these urbanization and other issues affecting the African region. Integrating space technology, such as communication, Earth observation, and satellite aided position timing & navigation application systems and small satellite technology, to the smart city paradigm could provide sustainable ways in which problems like digital division, over population, natural disaster, etc. could be managed and eradicated.

Cotesia sesamiae est un parasitoïde de chenilles ravageuses du maïs et du sorgho. Les différentes populations de C. Sesamiae ne possèdent pas la même capacité à se développer sur chacun des hôtes rencontrés. Elles possèdent un virus symbiotique intégré au génome et directement impliqué dans le contournement de la réponse immunitaire de l'hôte. L'étude chez le parasitoïde de plusieurs marqueurs microsatellites et d’un marqueur du virus a permis de démontrer la corrélation entre le génotype viral et la spécialisation de C sesamiae sur son hôte. Les C. Sesamiae sont aussi associées à des bactéries du genre Wolbachia. Ces bactéries sont à l'origine d'isolements post-copulatoires chez les insectes. Trois souches de Wolbachia hébergées par des populations distinctes ont été détectées chez C. Sesamiae. Ce résultat suggère une implication des Wolbachia dans le renforcement de la sélection sur le virus. Un modèle théorique a été développé et démontre que l'isolement post-copulatoire engendré par Wolbachia ne semble pas être une force évolutive suffisante pour maintenir la divergence à un locus sous sélection. Les données de terrain confirment ce résultat.

Le maïs cultivé en zones de savanes de Côte d'Ivoire est attaqué par 5 espèces de Lépidoptères foreurs qui s'attaquent soit a la tige, soit a l'épi, soit aux deux. Étude de la chétotaxie larvaire des différents foreurs, de l'habitus des stades préimaginaux, de la morphologie et de la biologie de Mussidia nigrivenella. Résultats de l'étude des fluctuations des populations de ces foreurs. Mise en évidence de l'efficacité de la deltaméthrine en concentré émulsifiable a 15 grammes de matière active à l'hectare. Iimpact des divers insectes sur le rendement et calcul d'équations de régression reliant la perte de rendement a l'attaque

This work tested on field 5 sesame accessions to identify the most appropriate GAP and to have a phenotypic description of the most relevant morpho–productive traits in different ecosystems. Eventually through the adoption of SSR markers it has been measured the genetic distances among these accessions and 6 more from different African countries in order to design the most appropriate breeding programme per the different ecosystems considered. A cropping financial analysis was eventually conducted to measure the profitability of the improved crop revealing that Those farmers in riverine on the Shabelle river who adopted the identified GAP (including the seasonal crop rotation with Maize) and best performing varieties increased their income at 1.04 USD/day/person.

Early Childhood Development (ECD) programmes are important in the promotion of intellectual development and school readiness in children. Equally important is the opportunity to learn in one‟s mother tongue. This study aimed to determine the value of using the multilingual television series Takalani Sesame as a Life Skills educational resource in specific South African schools, amongst Grade One learners. The focus lay on researching a possible mechanism for allowing children who had not attended quality ECD programmes to „catch up‟ in terms of knowledge they may be lacking, as well as providing a form of mother tongue instruction to African learners in schools where the language of instruction is English. A field experiment and a reception study were carried out at a primary school in Pietermaritzburg, South Africa. Two groups of twelve Grade One learners (from two different Grade One classes at the same school) were included in this research, which spanned a period of 6 months. The children in the test group watched a television series of Takalani Sesame (with guided viewing) and completed related activities including post viewing and homework activities. The children in the control group were not shown the series at school. Both groups were administered the same questionnaire both pre- and post-test in order to determine changes in Life Skills related learnt data. Other research methods included participant observation, focus group discussions, interviews with parents/caregivers and interviews with educators. These used Social Cognitive Theory as their basis, taking constructs that impact on behaviour change, such as modelling, outcome expectancies and behavioural capabilities into account. The research included a large focus on interpersonal communication between researcher and learner, and caregiver and learner, plus a concentration on the children‟s knowledge of and attitudes surrounding HIV/AIDS. Results showed satisfactory levels of attention to the series, as well as high levels of engagement with and enjoyment of the series. Levels of identification with characters were also noted to be high, increasing the possibilities of learning and behaviour change taking place. Decoding of messages was, for the most part, in line with the intentions of the producers, although oppositional readings, erroneous and creative decoding were also noted in some instances. The guided viewing component did well to increase levels of attention to the episode as well as allow for erroneously decoded messages to be corrected almost immediately. Positive changes in learnt data in the Life Skills areas of HIV/AIDS, Nutrition and Safety and Security were identified and these were noted to be impacted on by the homework activities which were included in the intervention to promote parent/caregiver-child communication. The research intervention was deemed to be a success in the selected school, and could possibly be recommended for use in similar South African primary schools where learners are taught in a language which is not their mother tongue. Possible areas for future related research were outlined. This research study contributes to the body of Entertainment Education (EE) research by identifying a new and valuable application for an EE intervention in the South African setting. This highlights the important aspects of localisation, in the South African context, promoting mother tongue learning and ECD.
Thesis (M.A.)-University of KwaZulu-Natal, Durban, 2011.

Abstract in English, Afrikaans and Sesotho
Scuba diving is a popular marine recreational activity along the eastern and southern coast of Africa. This region is characterised as the East African Marine Ecoregion (EAME) and is known for its richness in marine fauna and flora, including some of the Indian Ocean‟s most diverse and abundant coral reef ecosystems, making it a popular destination for scuba divers. The future of the scuba diving industry has come under threat as a result of environmental, social, political and economic impacts, and there is a need to better understand how these external risks impact on scuba diving tourism businesses in the EAME. Empirical evidence suggests that external risks, both international and domestic, have an effect on the tourism industry as a whole. However, limited research has been conducted on the impact of such external risks on the dive tourism industry specifically. Existing research has also focused extensively on environmental risks rather than on how external risks of a political, economic and social nature affect dive operator sustainability in the EAME. Most studies have also focused on the demand side (divers) as opposed to the supply side (dive operators). In addition, as dive tourists have greater flexibility to change their destination should risks arise, this threatens the success of dive operators in higher risk areas. To address these problems, the primary objective of the research undertaken sought to comprehensively identify the impact of external risks (environmental, economic, social and political) on dive operators in four countries within the EAME from a supply-side perspective. In order to achieve the primary objective, the following secondary objectives were achieved: 1. Identified scuba diving tourism operators in the EAME and their scope of operation. 2. Determined the external risks most relevant to dive operators in the EAME and assessed their level of impact. 3. Compared the individual external risks experienced by each of the countries in the EAME (Kenya, Tanzania, Mozambique and South Africa) using a cross-case analysis. 4. Assessed the perception of dive operators regarding whether external risks would influence a dive tourists decision to travel to the dive operators area of operation in the EAME ii The study consisted of two phases. Phase 1 comprised structured interviews with a select group of dive operators to gain insight into the external risks most prevalent in the scuba diving industry, as well as to assist in developing a quantitative structured survey (Phase 2), which was subsequently completed by dive operators in Kenya, Tanzania, Mozambique and South Africa. Data was imported into SPSS for quantitative statistical analysis. From the primary data collected, the major findings from this study determined that current economic and political risks have the greatest impact on dive operators in the EAME, and this trend is expected to continue. Environmental degradation of coral reefs, while not seen as a threat at present, constitutes a key threat for the near future. The greatest influences expressed in terms of risk categories impacting on dive tourism are domestic economic risks, international economic risks, domestic political risks and international political risks. A cross-case analysis conducted on the four countries concluded that external risks have varying effects within the different countries. Finally, the results indicated that external risks significantly influence a dive tourist's decision to travel to the EAME. By identifying and assessing the external risks that have an impact on dive operators in the EAME, this research contributes to knowledge on the dive tourism industry in the EAME, as well as dive tourism further afield and the wider field of tourism management. The study's findings create awareness of the effect that external risks have on dive operators in the region. A conceptual framework was developed which encompasses external risks in the scuba diving industry. Risk radars, risk maps and colour-coded tables were further outputs this study which can assist businesses, society and economies in responding to current and future threats and crises in a more informative and intuitive way. This can be achieved by implementing risk management strategies to mitigate or reduce exposure to external risks; strengthening stakeholder involvement along the tourism value chain; and stressing the need for government involvement towards the protection of the environment and promotion of small business growth in the region. Future research can include a wider view of the marine tourism industry and other areas of the Blue Economy.
Skubaduik is 'n gewilde mariene ontspanningsaktiwiteit langs die oos- en suidkus van Afrika. Hierdie streek staan bekend as die Oos-Afrika Mariene Ekostreek (East African Marine Ecoregion, EAME) en is bekend vir sy rykheid aan mariene fauna en flora, insluitende sommige van die Indiese Oseaan se mees diverse en welige koraalrif-ekostelsels, wat dit 'n gewilde bestemming vir skubaduikers maak. Die toekoms van die skubaduikbedryf word bedreig weens die impak van omgewings-, sosiale, politieke en ekonomiese gebeure, en daar is 'n behoefte om beter te verstaan hoe hierdie eksterne risiko's skubaduiktoerisme-besighede in die EAME beïnvloed. Empiriese bewyse suggereer dat eksterne risiko's, internasionaal sowel as plaaslik, 'n invloed op die toerismebedryf as 'n geheel het. Beperkte navorsing is egter gedoen oor die impak van sulke eksterne risiko's op spesifiek die duiktoerisme-bedryf. Bestaande navorsing het ook uitvoerig gefokus op omgewingsrisiko's eerder as hoe eksterne risiko's van 'n politieke, ekonomiese en sosiale aard duik-operateur-volhoubaarheid in die EAME beïnvloed. Die meeste studies het ook gefokus op die aanvraagkant (duikers) in teenstelling met die aanbodkant (duik-operateurs). Verder, omdat duiktoeriste meer buigsaamheid het om hulle bestemming te verander indien risiko's voorkom, bedreig dit die sukses van duik-operateurs in hoë-risiko-gebiede. Om hierdie probleme te hanteer is die primêre doel van die navorsing wat gedoen is om op omvattende wyse die impak van eksterne risiko's (omgewing, ekonomies, sosiaal en polities) op duik-operateurs in vier lande in die EAME te identifiseer uit 'n aanbodkant-perspektief. Om die primêre doelwit te behaal, is die volgende sekondêre doelwitte bereik: 1. Skubaduik-toerisme-operateurs in die EAME en hulle operasionele omvang is geïdentifiseer. 2. Die eksterne risiko's wat die relevantste vir duik-operateurs in die EAME is, is bepaal en hulle vlak van impak is geassesseer. 3. Die individuele eksterne risiko's wat deur elkeen van die lande in die EAME (Kenia, Tanzanië, Mosambiek en Suid-Afrika) ervaar is, is vergelyk deur die gebruik van 'n kruisgeval-analise. 4. Die persepsie van duik-operateurs wat betref of eksterne risiko's 'n duiktoeris se besluit sal beïnvloed om na die duik-operateur se operasionele gebied in die EAME te reis, is geassesseer. Die studie het uit twee fases bestaan. Fase 1 het gestruktureerde onderhoude met 'n geselekteerde groep duik-operateurs behels om insig te kry in die eksterne risiko's wat die algemeenste in die skubaduikbedryf voorkom, en om te help om 'n kwantitatiewe gestruktureerde peiling (fase 2) te ontwikkel, wat gevolglik deur duik-operateurs in Kenia, Tanzanië, Mosambiek en Suid-Afrika voltooi is. Data is ingevoer in SPSS vir kwantitatiewe statistiese analise. Uit die primêre data wat ingesamel is, het die belangrikste bevindings van hierdie studie bepaal dat die huidige ekonomiese en politieke risiko's die grootste impak op duik-operateurs in die EAME het, en daar word verwag dat hierdie tendens sal voortduur. Die omgewingsagteruitgang van koraalriwwe, hoewel dit nie tans as 'n bedreiging beskou word nie, is 'n sleutelbedreiging vir die nabye toekoms. Die grootste invloede wat uitgedruk is as risiko-kategorieë wat 'n invloed op duiktoerisme het, is plaaslike ekonomiese risiko's, internasionale ekonomiese risiko's, plaaslike politieke risiko's en internasionale politieke risiko's. 'n Kruisgeval-analise wat op die vier lande uitgevoer is, het bevind dat eksterne risiko's wisselende uitwerkings binne die verskillende lande het. Laastens het die resultate aangedui dat eksterne risiko's 'n duiktoeris se besluit om na die EAME te reis, aansienlik beïnvloed. Deur die eksterne risiko's te identifiseer en te assesseer wat 'n impak op duik-operateurs in die EAME het, dra hierdie navorsing by tot kennis oor die duiktoerismebedryf in die EAME, asook duiktoerisme verder weg en die wyer veld van toerismebestuur. Die studie se bevindings skep 'n bewustheid van die uitwerking wat eksterne risiko's op duik-operateurs in die streek het. 'n Konseptuele raamwerk is ontwikkel wat eksterne risiko's in die skubaduikbedryf omvat. Risiko-radars, risiko-kaarte en tabelle wat volgens kleur gekodeer is, was verdere uitsette van hierdie studie wat besighede, die gemeenskap en ekonomieë kan help om te reageer op huidige en toekomstige bedreigings en krisisse op 'n meer ingeligte en intuïtiewe manier. Dit kan bereik word deur risikobestuurstrategieë te implementeer om blootstelling aan eksterne risiko's te mitigeer of te verminder; belanghebberbetrokkenheid op die toerismewaardeketting te versterk; en om die behoefte vir regeringsbetrokkenheid by die insluit.
Ho sesa tlasa metsi a lewatle ke mosebetsi o tsebahalang haholo wa boithabiso ba lewatle haufi le mabopo a ka botjhabela le borwa ba Afrika. Sebaka sena se kgethollwa e le lefatshe la bophelo ba mawatle a Afrika Botjhabela (EAME) mme se tsejwa ka leruo la sona la diphoofolo tsa lewatle le dimela, ho kenyelletsa le tse ding tsa diphedi tse fapaneng tsa lewatle la Indian, e leng se etsang hore e be sebaka se tumeng bakeng sa batho ba sesang tlasa lewatle. Bokamoso ba indasteri ya ho tola tlasa lewatle bo kotsing ka lebaka la tshusumetso ya tikoloho, kahisano, dipolotiki le moruo, mme ho na le tlhokahalo ya ho utlwisisa hantle hore dikotsi tsena tsa kantle di ama jwang dikgwebo tsa bothori bo amanang le ho sesa tlasa lewatle EAME (Mabatoweng a Afrika Botjhabela a diphedi tsa mawatle). Bopaki bo hlakileng bo fana ka maikutlo a hore dikotsi tsa kantle, tsa matjhaba le tsa lehae, di na le tshwaetso indastering ya bohahlauli ka kakaretso. Leha ho le jwalo, dipatlisiso tse fokolang di ile tsa etswa mabapi le sefutho sa dikotsi tse jwalo tsa kantle indastering ea bohahlaudi ba ho sesa ka ho kgetheha. Dipatlisiso tse teng di boetse di tsepamisitse maikutlo haholo ka dikotsi tsa tikoloho di sa shebe hore na dikotsi tsa kantle tsa dipolotiki, tsa moruo le tsa kahisano di ama jwang ho tsitsisa tshebetso ho EAME. Diphuputso tse ngata di boetse di tsepame lehlakoreng la tlhokahalo (disesi) ho fapana le lehlakore la diphallelo (batho ba sesang). Ho phaella moo, jwalo ka ha disesi tsa bahahlaudi di ena le maemo a mangata a ho fetola dibaka tsa bona ha ho hlaha dikotsi, sena se senya katleho ya disesi dibakeng tse nang le dikotsi tse ngatanyana. Ho rarolla mathata ana, sepheo se ka sehloohong sa dipatlisiso tse entsweng di ile tsa leka ho lemoha ka ho hlaka sefutho sa dikotsi tsa kantle (tikoloho, moruo, kahisano le dipolotiki) ho disesi dinaheng tse nne tse ka hare ho EAME ho tloha lehlakoreng la phepelo. E le ho finyella sepheo se ka sehloohong, dipheo tse latelang di ile tsa fihlellwa: 1. Ho kgetholla basebeletsi ba bahahlaudi ba ho sesa lebatoweng la EAME le tsela ya tshebetso ya bona. 2. Ho etsa qeto ya dikotsi tse ka ntle tsa bohlokwa ho tsamaisa ba disesi ho EAME le ho hlahloba boemo ba tsona ba tshusumetso. 3. Ho bapiswa dikotsi tse ka ntle tsa naha ka nngwe ho EAME (Kenya, Tanzania, Mozambique le Afrika Borwa) ho sebedisa dintlha tsa ho hlahloba diketsahalo. 4. Hlahloba maikutlo a disesi mabapi le hore na dikotsi tse ka ntle di tla susumetsa qeto ya bahahlaudi ba ho etela sebakeng seo ba sebetsang ho sona ho EAME Thuto e ne e ena le mekgahlelo e mmedi. Mokgahlelo wa 1 o ne o ena le dipuisano tse hlophisitsweng le sehlopha se kgethilweng sa basebetsi ba disesi ho utlwisisa dikotsi tse ka ntle tse atileng haholo indastering ya ho sesa, le ho thusa ho ntlafatsa tlhahlobo e entsweng ka bongata (Phase 2), e ileng ya qetella e phethilwe ke basebetsi ba disesi Kenya, Tanzania, Mozambique le Afrika Borwa. Lesedi le ile la kenngwa ka SPSS bakeng sa tlhahlobo ya dipalopalo. Ho tswa leseding la motheho le bokelletsweng, diphuputso tse kgolo tsa thuto ena di bontshitse hore dikotsi tsa moraorao tsa moruo le tsa lipolotiki di na le tshusumetso e kgolo ho ba sebetsang e le basebetsi ba disesi EAME, mme mokgwa ona o lebeletswe hore o tswele pele. Ho senyeha ha tikoloho ya dimela/diphedi tsa lewatle, ha ho sa nkuweng e le tshoso hona jwale, ke tshoso e ka sehloohong bakeng sa nako e tlang. Tshusumetso e matla ka ho fetisisa e hlalositsweng ka mekgahlelo ya dikotsi tse amang tsela ya ho etela dibaka tsa bohahlaudi ke dikotsi tsa moruo wa lehae, dikotsi tsa matjhaba tsa moruo, dikotsi tsa dipolotiki tsa lehae le dikotsi tsa matjhaba tsa dipolotiki. Phuputso e entsweng dinaheng tse nne e qetile ka hore dikotsi tsa ka ntle di na le diphello tse fapaneng dinaheng tse fapaneng. Qetellong, diphello di bontshitse hore dikotsi tsa ka ntle di susumetsa haholo qeto ya mohahlaudi wa ya sesang tlasa lewatle ho etela EAME. Ka ho kgetholla le ho hlahloba dikotsi tse ka ntle tse nang le tshwaetso basebetsing ba disesi EAME, dipatlisiso tsena di tlatsetsa tsebong lefapheng la bohahlaudi ba ho ho sesa tlasa lewatle dibakeng tsa EAME, ha mmoho le bahahlaudi ba ho sesa ka ho phatlalla tsamaisong ya bohahlaudi. Diphuputso tsa thuto di etsa hore ho be le tlhokomediso ya phello ya ka moo dikotsi tse ka ntle di nang le kameho disesing sebakeng seo. Ho na le moralo o ileng wa etswa o kenyeletsang dikotsi tsa kantle indastering ya ho sesa tlasa lewatle. Diwaelese tse nkgellang dikotsi, dimmapa tsa dikotsi le ditafole tse nang le mebala di ne di boetse di hlahisa thuto ena e ka thusang dikgwebo, setjhaba le moruo ho arabela dikotsing tsa moraorao le tsa nakong e tlang ka ditsela tse rutang le tse nang le tsebo. Sena se ka fihlellwa ka ho kenya tshebetsong maano a tsamaiso ya kotsi bakeng sa ho fokotsa ho pepeseha dikotsing tsa kantle; ho matlafatsa tshebetsong ya bankaseabo motjheng wa bohlokwa wa bohahlaudi; le ho totobatsa tlhokahalo ya ho nka seabo ha mmuso ho sireletsa tikoloho le tshehetso ya kgolo ya dikgwebo tse nyenyane sebakeng seo. Phuputso ya nako e tlang e ka kenyelletsa pono e pharaletseng ya indasteri ya bahahlaudi ba lewatle le dibaka tse ding tsa Blue Economy.
Environmental Sciences
M. Com. (Tourism Management)

The nutritional state of large segments of the African population remains alarming despite the positive socio-economic development that is taking place. The most significant nutritional problems include undernutrition, iron deficiency and vitamin A deficiency. Malnutrition and deficiencies also exacerbate a number of other diseases and health conditions. Besides undernutrition, the prevalence of overnutrition and obesity on the African continent are rising, as are the associated health conditions such as diabetes and coronary heart diseases. This chapter outlines the unique nutritional and bioactive properties of Traditional African Foods (TAFs) and their potential to contribute to the alleviation of undernutrition, overnutrition and associated health problems. Special emphasis is placed on vegetables, fruits, cereals, edible insects, small fish species, mushrooms, legumes, sesame, tuber and root crops. Some of the identified health benefits of these TAFs include lowering of serum cholesterol, anti-carcinogenic, anti-diabetic and anti-inflammatory, cardiovascular disease prevention and anti-hypertensive properties.

The nutritional state of large segments of the African population remains alarming despite the positive socio-economic development that is taking place. The most significant nutritional problems include undernutrition, iron deficiency and vitamin A deficiency. Malnutrition and deficiencies also exacerbate a number of other diseases and health conditions. Besides undernutrition, the prevalence of overnutrition and obesity on the African continent are rising, as are the associated health conditions such as diabetes and coronary heart diseases. This chapter outlines the unique nutritional and bioactive properties of Traditional African Foods (TAFs) and their potential to contribute to the alleviation of undernutrition, overnutrition and associated health problems. Special emphasis is placed on vegetables, fruits, cereals, edible insects, small fish species, mushrooms, legumes, sesame, tuber and root crops. Some of the identified health benefits of these TAFs include lowering of serum cholesterol, anti-carcinogenic, anti-diabetic and anti-inflammatory, cardiovascular disease prevention and anti-hypertensive properties.

This chapter opines on the prospect for another African American to helm the White House kitchen at some point in the future. No African Americans have presided over the White House kitchen since Zephyr Wright did in the late 1960s. Given the current way that chefs often get hired to work in the contemporary White House, future chefs will likely come from the existing kitchen staff, as the personal chef of a future president or as someone of stature in the culinary world. The chapter gives the back story of the 1994 State Dinner held in honor of Republic of South African President Nelson Mandela. The chapter ends by looking at how the contemporary White House kitchen inspires young people today with a special emphasis on former First Lady Michelle Obama's "Let's Move" Initiative and the Kids' State Dinners she hosted during her tenure. This chapter profiles Chef Patrick Clark, Chef Marcus Samuelsson, White House kitchen steward Adam Collick and Kiana Farkash. The chapter includes recipes for sesame and wasabi-crusted halibut, layered late-summer vegetables with lemongrass and red curry dressing, grilled salmon with farro, Swiss chard salad, and a tropical smoothie.

Tracking change in rural communities over time is difficult. It is also important. If one is to understand what forms of peasant poverty persist, or how and in what ways peasant communities can become richer, then one requires longitudinal studies. These are however few. It is difficult to access the data required for them. The chapter presents one case using assets to track growing prosperity that was built on a boom of sesame production in Rukwa Region in Tanzania. It traces the growth of prosperity that the boom caused and the limits of its spread in rural society.

This chapter elaborates on the concept of kleptocracy by providing a portrait of one of the most publicized and influential early examples of grand corruption: that of Mobutu Sese Seko in the Congo. Sketching out the corruption of Mobutu and his clique shows how the global anti-kleptocracy norm and the resulting regime came into being. For different reasons, a wide variety of intergovernmental organizations, NGOs, and governments from Africa, Asia, and Latin America argue that corruption implicates rich countries as well as poor, because funds looted from poor countries tended to end up in rich ones. The story of intertwined normative and policy change at the global level in this chapter provides context for the following analysis of how well these rules work at a national level.

Electronic commerce (or e-commerce) is the popular term for doing business electronically. According to Haag, Cummings, and McCubbrey (1998), for businesses, electronic commerce includes performing transactions with customers over the Internet for purposes such as home shopping, home banking, and electronic cash use; performing transactions with other organizations through the use of electronic data interchange (EDI); gathering information relating to consumer market research and competitors; and distributing information to prospective customers through interactive advertising, sales, and marketing efforts. Benefits of e-commerce to companies include a wider potential market (i.e., global access); lowering of transaction costs; increase in the speed of transactions; improved economies of scale; minimization of human intervention in business processes; and unlimited access to product information for customers (Sesan, 2000; Wood, 2003). While a few developing countries such as Costa Rica are making inroads into electronic commerce (Travica, 2002), many others are slow in its adoption. For example, a study, which rated 42 developing countries on their “e-readiness,” found that Taiwan and Estonia had emerged as leaders among developing countries in the ability to conduct e-commerce, whereas Russia, much of the Middle East, and Africa were lagging behind (Anonymous, 2000). One of the countries included in the study but that rated poorly in its e-commerce efforts is Nigeria. In this articl, we shall be discussing the challenges being faced by the country as it grapples with the adoption of e-commerce.