The residues of persistence potentially toxic organic compounds polyaromatic hydrocarbons (PAHs) were measured in 13 species of edible vegetables collected from Great Cairo governorate (Egypt). And the efficient role of washing by oxidizing agents hydrogen peroxide (H O ), potassium permanganates (KMnO ) 2 2 4 and midribs of cabbage leaves solutions on the elimination of PAHs from contaminated ...

Fruits and vegetables are important source of carbohydrates, proteins, organic acids, vitamins and minerals for human nutrition. When plants or plant parts are used by humans, whether for food, or for aesthetic purpose, there is always a postharvest component. Postharvest losses in fresh fruits and vegetables may occur anywhere from the point where the food has been harvested or gathered up to ...

OBJECTIVE To evaluate the psychometric properties of a vegetable parenting practices scale using multidimensional polytomous item response modeling which enables assessing item fit to latent variables and the distributional characteristics of the items in comparison to the respondents. We also tested for differences in the ways item function (called differential item functioning) across child's...

The multi-billion dollar organic food industry is fueled by consumer perception that organic food is healthier (greater nutritional value and fewer toxic chemicals). Studies of the nutrient content in organic foods vary in results due to differences in the ground cover and maturity of the organic farming operation. Nutrient content also varies from farmer to farmer and year to year. However, re...

Seven winter and five summer vegetables produced under organic conventional systems were collected from a supermarket seven times between January April July October for vegetables, respectively, their ascorbic acid total phenolic content (compounds with proven antioxidant activity) as well capacity, soluble solids nitrates determined. The results clearly indicated that, the three factors studie...

The products of plant origin are a rich source of biologically active substances, both nutritive and referred as anti-nutritive. A large group of these compounds are substances with antioxidant activity that fights against free radicals. In the family of Brassicaceae vegetables, Brassica, is the largest and most widely consumed a group of plants in Europe and all over the world. They are charac...

This paper reports on the latest contributions to over 20 years of research on organic food consumers. There is a general consensus in the literature on the reasons why people buy organic food. However, there is also a gap between consumers’ generally positive attitude toward organic food and their relatively low level of actual purchases. Product differentiation based on intangible features, s...

BACKGROUND Feeding schemes based on school garden produce have been proposed as an effective solution to food insecurity and hunger among learners in South Africa. However, few studies have looked at the potential contamination of school food gardens when situated near mine tailing dams. OBJECTIVES The aim of the study was to evaluate the potential heavy metal contamination in a school vegeta...

The growth of the organic foods industry in the United States has been dramatic in the past 2 decades. It is estimated that organic sales have increased by nearly 20% annually since 1990, with consumer sales reaching $13.8 billion in 2005 (Figure 1). While initial organic food production primarily involved small farms and local distribution of fresh produce, today’s organic food system is a com...

Consumer concern over the quality and safety of conventional food has intensified in recent years, and primarily drives the increasing demand for organically grown food, which is perceived as healthier and safer. Relevant scientific evidence, however, is scarce, while anecdotal reports abound. Although there is an urgent need for information related to health benefits and/or hazards of food pro...