Enhancing the food security of the peri-urban and urban poor through improvements to the quality, safety and economics of street-vended foods

There has been a continuing growth in urbanisation in developing countries, and governments’ face a major challenge in ensuring that city dwellers are able to procure sufficient food. Street foods are sold in almost every country in the world. In most towns and cities in Ghana, selling of snacks and whole meals on the streets is an important way to obtain income, especially among the poor women. Street foods have a long tradition in most countries. The role of this sector in the urbanisation process and the urban economy reflects the way of life and the survival and coping strategies adopted in most African cities. Some earlier studies on street food vending in Ghana have taken place. The FAO and WHO have funded these. Unfortunately, the studies did not include potential food safety concerns such as the presence of heavy metals, pesticide residues and the presence of mycotoxins. The studies did not also examine the contribution of these informal microenterprises to the Ghanaian economy. The DFID/NRI/FRI project on improved street-vended foods was a one-year exploratory study aimed at assessing the safety and quality of food sold in Accra as well as estimates the contribution of this sector to the national economy of Ghana. The project complemented previous work carried on the sector by other workers. This workshop was therefore organized to present findings and identifies new areas where further knowledge is required. As part of this dissemination, key stakeholders of the streetfood vending business in Ghana made short presentations on the status of the foods sold in Accra. These short presentations are also included in this report.Streetfood; microenterprises; mycotoxins; public health; economics; Organochlorines; Poverty

Does reproductive performance improve with age in female European starlings, Sturnus vulgaris?

1 online resource (v, 18 p.) : illustrationsIncludes abstract.Includes bibliographical references (p. 14-18).Studies have shown that the most energetically costly event in a bird’s life cycle is that of breeding, particularly for females who lay nutrient-rich eggs. Studies also show that older males and females are often preferred as mates. Potential reasons include older individuals having experience with locating good feeding sites, and provisioning offspring, as well as being in better condition or possessing superior genes. European Starlings (Sturnus vulgaris) are cavity-nesting passerines with bi-parental care, and have hackles whose length of iridescence allows classification of adults into one of two age categories (Second year, SY, who are breeding for the first time; After Second Year, ASY, who likely bred at least once before). The objective of my study was to determine if older females had higher reproductive performance than younger females, using four years of data. I predicted that ASY females would be in better condition than SY females, and that they would have larger clutch sizes, a higher mean egg mass, and greater hatching and fledging success. In support of my predictions, ASY females were in significantly better condition than SY females, and had larger clutch sizes. ASY females also tended to have higher fledging success, although mean egg mass and hatching success did not differ between ASY and SY females. Condition and reproductive performance in this population of European Starlings were higher for older females than first-time breeding females, suggesting that these older females might be expected to be preferred as mates

Biocompatibility of cross-linked hyaluronate (Gel-200) for the treatment of knee osteoarthritis

SummaryObjectiveTo compare the biocompatibility and immunogenicity of two intra-articular hyaluronan formulations, Gel-200 (Gel-One®) and hylan G-F 20 (Synvisc® series).Experimental designA comparison of the biocompatibility of Gel-200 and hylan G-F 20 was made using a rat subcutaneous air pouch model and the knee joint of normal rabbits. Immunogenicity was evaluated using a homologous passive cutaneous anaphylaxis (PCA) assay in guinea pigs.ResultsIn the air pouch model in rats, characteristic fibrous belts formed in the subcutaneous tissue. Injection of hylan G-F 20 into the air pouch induced granulomatous nodules primarily composed of macrophages, multinucleated giant cells, and eosinophils accompanied with the test material in the center of the nodules in the fibrous belt. Furthermore, the thickness of the fibrous belt in the hylan G-F 20 group increased significantly compared to the saline group. Injection of Gel-200 into the air pouch induced neither granulomatous inflammation nor significant thickening of fibrous belt, while foamy macrophages containing the test material were observed. Intra-articular injection of hylan G-F 20 into the rabbit knee joints induced granulomatous inflammation, eosinophil infiltration, and significant increase in the number of cells in the synovial fluid, while these findings were absent in the Gel-200 group. In the immunogenicity assay, hylan G-F 20 induced a positive PCA reaction, but the Gel-200 did not.ConclusionGel-200 showed more favorable biocompatibility and less immunogenicity compared to hylan G-F 20. Gel-200 is expected to be a single injection hyaluronan product with less safety concerns for the treatment of knee osteoarthritis (OA) pain

Occupational and environmental health hazards associated with food processing and the use of personal protective equipment: A case study of Gari processing in southern Ghana

The processing of cassava into different staple foods, including gari, comes with occupational and environmental hazards. This research aimed at assessing the awareness of occupational health hazards associated with the processing of cassava (Manihot esculenta) into Gari, environmental impact and factors that influence the wearing of personal protective equipment. Ninety (90) Gari producers were randomly selected from Awutu Senya, Central Tongu and Ayensuano Districts of Ghana and interviewed using structured and semi-structured questionnaire. Results revealed that Gari producing industry was dominated by women (78.9%). The majority of cassava processors in the study area were aware of health hazards associated with the production of gari. However, most did not take measures to reduce or mitigate exposure to health risk. The Gari industry was less attractive to people above 60 years (8.9%). Training on occupational safety and health risk was low among processors. The usage of personal protective equipment (PPE) by processors was low. Only 3.3%, 16 and 17.8% used footwear, working gear and coat, respectively, during processing. Factors that influenced processors' decision to use PPE included years of experience in processing, knowledge of health risk associated with the processing of cassava into Gari, awareness of protective equipment and a visit to health facility relating to condition sustained at work. Producers were aware of the environmental effects of Cassava-mill effluent but did not treat effluents before discharge into the environment. Some environmental effects of mill cassava effluent identified by the gari producers were; reduction in soil productivity, destruction of vegetation cover, the killing of trees and bad odour. The low level of education and training accounted for the low usage of PPEs

Enhancing the food security of the peri-urban and urban poor through improvements to the quality, safety and economics of street-vended foods

There has been a continuing growth in urbanisation in developing countries, and governments’ face a major challenge in ensuring that city dwellers are able to procure sufficient food. Street foods are sold in almost every country in the world. In most towns and cities in Ghana, selling of snacks and whole meals on the streets is an important way to obtain income, especially among the poor women. Street foods have a long tradition in most countries. The role of this sector in the urbanisation process and the urban economy reflects the way of life and the survival and coping strategies adopted in most African cities. Some earlier studies on street food vending in Ghana have taken place. The FAO and WHO have funded these. Unfortunately, the studies did not include potential food safety concerns such as the presence of heavy metals, pesticide residues and the presence of mycotoxins. The studies did not also examine the contribution of these informal microenterprises to the Ghanaian economy. The DFID/NRI/FRI project on improved street-vended foods was a one-year exploratory study aimed at assessing the safety and quality of food sold in Accra as well as estimates the contribution of this sector to the national economy of Ghana. The project complemented previous work carried on the sector by other workers. This workshop was therefore organized to present findings and identifies new areas where further knowledge is required. As part of this dissemination, key stakeholders of the streetfood vending business in Ghana made short presentations on the status of the foods sold in Accra. These short presentations are also included in this report

Enhancing the food security of the peri-urban and urban poor through improvements to the quality, safety and economics of street-vended foods

There has been a continuing growth in urbanisation in developing countries, and governments’ face a major challenge in ensuring that city dwellers are able to procure sufficient food. Street foods are sold in almost every country in the world. In most towns and cities in Ghana, selling of snacks and whole meals on the streets is an important way to obtain income, especially among the poor women. Street foods have a long tradition in most countries. The role of this sector in the urbanisation process and the urban economy reflects the way of life and the survival and coping strategies adopted in most African cities. Some earlier studies on street food vending in Ghana have taken place. The FAO and WHO have funded these. Unfortunately, the studies did not include potential food safety concerns such as the presence of heavy metals, pesticide residues and the presence of mycotoxins. The studies did not also examine the contribution of these informal microenterprises to the Ghanaian economy. The DFID/NRI/FRI project on improved street-vended foods was a one-year exploratory study aimed at assessing the safety and quality of food sold in Accra as well as estimates the contribution of this sector to the national economy of Ghana. The project complemented previous work carried on the sector by other workers. This workshop was therefore organized to present findings and identifies new areas where further knowledge is required. As part of this dissemination, key stakeholders of the streetfood vending business in Ghana made short presentations on the status of the foods sold in Accra. These short presentations are also included in this report

A large area cosmic muon detector located at Ohya stone mine

The chemical composition of the primary cosmic rays between 10 to the 15th power eV and 10 to the 18th power eV were determined by a Large Area Cosmic Muon Detector located at Ohya stone mine. The experimental aims of Ohya project are; (1) search for the ultra high-energy gamma-rays; (2) search for the GUT monopole created by Big Bang; and (3) search for the muon bundle. A large number of muon chambers were installed at the shallow underground near Nikko (approx. 100 Km north of Tokyo, situated at Ohya-town, Utsunomiya-city). At the surface of the mine, very fast 100 channel scintillation counters were equipped in order to measure the direction of air showers. These air shower arrays were operated at the same time, together with the underground muon chamber