Mercury, cadmium, and lead concentrations of ashed plants and insects samples were investigated and compared with those of soil to reveal their biogeochemical processes along food chains in Huludao City, Liaoning Province, China. Concentration factors of each fragments of the soil-plant-the herbivorous insect-the carnivorous insect food chain were 0.18, 6.57, and 7.88 for mercury; 6.82, 2.01, a...

BACKGROUND The federal menu labeling law will require chain restaurants to post caloric information on menus, but the impact of labeling is uncertain. PURPOSE The goal of the current study was to examine the effect of menu labeling on calories purchased, and secondarily, to assess self-reported awareness and use of labels. DESIGN Single-community pre-post-post cross-sectional study. Data we...

Several global developments such as the growing demand for bioenergy, limits in the availability of water and diminishing production resources as well as sector-wide crises (e.g. BSE, swine fever, dioxin) have led to a changing attitude of society towards the consequences of the food system‘s activities for social, economic and environmental issues, captured in the term of sustainability. As a ...

The demand for locally produced food is increasing as global food supply system has considerably affected the confidence of consumers by increasing tonne-kilometres, food safety risk, environmental impact, and disconnecting local food producers and consumers. However, local food suppliers are not in the position to compete with large scale food supply systems due to high logistics costs. The ov...

This article reviews recent research into alternative systems of food provision. It considers, first, what the concept of ‘alternativeness’ might mean, based on recent discussions in economic geography. Informed by this, it discusses food relocalization and the turn to ‘quality’ food production, arguing that both are ‘weaker’ alternative systems of food provision because of their emphasis on fo...

This study begins with the perspective of food safety management and the traceability system of the whole supplying chains, taking the food safety problem of fruits and vegetables as the starting point of the research, combined with the domestic and foreign advanced food safety tracing theory as well as the application of technology, so as to construct food safety tracing system of fruits and v...

Every animal is (1,2) closely linked with a number of other animals living round it, and these relations in an animal community are largely food relations. (3) Man himself is in the centre of such an animal community, as is shown by his relations to plague-carrying rats and (4) to malaria or the diseases of his domestic animals, e.g. liver-rot in sheep. (5) The dependence of man upon other anim...