Objective: To review studies examining the nutritional value of street foods and their contribution to the diet of consumers in developing countries. Design: The electronic databases PubMed/MEDLINE, Web of Science, Cochrane Library, Proquest Health and Science Direct were searched for articles on street foods in developing countries that included findings on nutritional value. Results: From a total of 639 articles, twenty-three studies were retained since they met the inclusion criteria. In summary, daily energy intake from street foods in adults ranged from 13 % to 50 % of energy and in children from 13 % to 40 % of energy. Although the amounts differed from place to place, even at the lowest values of the percentage of energy intake range, energy from street foods made a significant contribution to the diet. Furthermore, the majority of studies suggest that street foods contributed significantly to the daily intake of protein, often at 50 % of the RDA. The data on fat and carbohydrate intakes are of some concern because of the assumed high contribution of street foods to the total intakes of fat, trans-fat, salt and sugar in numerous studies and their possible role in the development of obesity and non-communicable diseases. Few studies have provided data on the intake of micronutrients, but these tended to be high for Fe and vitamin A while low for Ca and thiamin. Conclusions: Street foods make a significant contribution to energy and protein intakes of people in developing countries and their use should be encouraged if they are healthy traditional foods.

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This article investigates the conceptual and methodological challenges to develop a set of baseline indicators for South African food security targets. A food security target is a well-defined and measurable goal to reduce the numbers of people who lack enough food of the right quality to live healthy lives. To derive baseline indicators for household food security, the following question is asked: what is the average cost of a nutritionally adequate food basket per person? The cost of recommended nutrient intake is based on estimates of dietary energy costs. Reported food expenditure for each household based on 2005/2006 Income and Expenditure Survey data gets compared to two dietary energy cost baskets. The food expenditure shares of the poorest households vary between 38% and 71% according to different surveys. At food expenditure levels reported in the IES, one in five households meet their average dietary energy cost. Deep levels of food insecurity exist in rural areas with 85% of rural households unable to afford even the 'below average dietary energy costs'. Food security policy based on refined baseline indicators can better target food insecure households. Another policy benefit is that robust indicators help to develop effective monitoring capabilities.

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Despite the introduction of social innovation in the 1996 White Paper on Science and Technology, the concept of social innovation has not been actively implemented or even diffused outside of the policy arena in South Africa. Perceptions about what the concept of social innovation should encompass are contested and range from ideas of social welfare outcomes, public goods and a primary focus on the poor. More recently, the emphasis has been on inclusive development that embraces and supports the poor as innovators and which incorporates elements of social and economic development. While contestation in terminology persists, evidence from South Africa’s rural areas suggests that although there may be limited state intervention, hampered by structural constraints, and limited understanding of contemporary ideas about innovation and social innovation, local actors practise a variety of forms of social innovation. In most instances, the purpose is to improve social and economic well-being of the poor. Such innovation activities occur almost as widely and as often as strictly commercially oriented innovation activities. However, it is unclear from observed social innovation practices who should benefit from these practices (the poor or everyone), how (directly or indirectly) and when (immediately or gradually). It is suggested that extensive use of the actor-oriented sociological approach to understanding social dynamics in both science and development can provide a means of understanding the subtleties involved in innovation practices and its use should be adopted to address structural challenges within the National System of Innovation that mediate against the contribution of innovations to the poor for inclusive development.