ABSTRACT
As plantas alimentícias não convencionais, conhecidas pela sigla PANC, são hortaliças, frutas, flores ou ervas que crescem espontaneamente na natureza, mas que por serem desconhecidas para a maioria das pessoas, acabam sendo confundidas com plantas daninhas. Este estudo objetivou realizar um levantamento das pesquisas sobre PANC nos anais das últimas seis edições do Congresso Brasileiro de Nutrição (CONBRAN) e nos anais das últimas sete edições do Congresso da Sociedade Brasileira de Nutrição (SBAN), indicando o perfil dessas pesquisas no Brasil no campo da Nutrição. Trata-se de pesquisa qualitativa, descritiva e exploratória. Foram identificados 25 trabalhos sobre o tema no CONBRAN e dez no Congresso SBAN, indicando que as PANC são tema ainda pouco explorado e abordado com pouca frequência nas pesquisas em Nutrição no Brasil. Destaca-se o potencial emergente de pesquisa que as PANC podem representar no campo da Alimentação em suas mais diversas vertentes: culinária, gastronomia, segurança alimentar, ciência de alimentos, entre outras. Esta pesquisa contribui para a ampliação do conhecimento e direcionamento dos estudos nesta área e, assim, poderá sinalizar uma agenda para estudos futuros. (AU)
Unconventional food plants, known by the acronym UFP (PANC, in Portuguese), are vegetables, fruits, flowers or herbs that grow spontaneously in nature, but because they are unknown to most people, they end up being confused with weeds. This study aimed to carry out a survey of the research on non-conventional food plants in the records of the last six editions of the Brazilian Congress of Nutrition (CONBRAN) and of the last seven editions of the Congress of the Brazilian Society of Nutrition (SBAN), indicating the profile of these studies in Brazil in the field of Nutrition. It is a qualitative, descriptive and exploratory research. Twenty-five studies on the subject at the CONBRAN Congress and ten at the SBAN Congress were identified, indicating that UFP still are little explored subject and rarely addressed in Nutrition research in Brazil. We highlight the emerging research potential that UFP can represent in the field of Food in its most diverse aspects: cooking, gastronomy, food safety, food science, among others. This research contributes to the expansion of knowledge and direction of studies in this area and it may also signal an agenda for future studies. (AU)
Subject(s)
Plants, Edible , Biodiversity , Food SecurityABSTRACT
Coal combustion generates considerable amount of ultrafine particles and exposure to such particulate matter is a major health concern in the developing countries. In this study, we collected nano sized coal fly ash (CFA) and characterized them by scanning electron microscope-energy dispersive X-ray analysis (SEM-EDX), particle size analyzer (PSA) and transmission electron microscope (TEM), and investigated its toxicity in vitro using different cell lines. The imaging techniques showed that the coal fly ash nanoparticles (CFA-NPs) are predominately spherical shaped. The analyses have revealed that the CFA-NPs are 7-50 nm in diameter and contain several heavy metals associated with CFA particles. The studies showed significant amount of toxicity in all cell lines on treatment with CFA-NPs. The cytotoxicity and oxidative DNA damage caused by CFA-NPs were determined by inhibition of cellular metabolism (MTT), total intracellular glutathione (GSH), reactive oxygen species (ROS) and DNA fragmentation in cultured cell lines (Chang liver, HS294T and LL29). The cellular metabolism was inhibited in a dose-dependent manner in CFA-NPs treated cell lines. The CFA-NPs induced ROS and decreased the total intracellular glutathione with increased dose. Further, the CFA-NPs treated cells showed severe DNA laddering as a result of DNA fragmentation.