1,721,011 research outputs found
Ortaggi di Puglia, tra biodiversità e innovazione: il caso dei micro-ortaggi
No full textNon present
3D image models in a dynamic environmental GIS
Full text linkThe modern digital cartography, represented by numerical cartography, digital elevation models (DEM, DTM, DSM), orthoimages or the same like photo textured on DEM, is the metrically correct and highly descriptive system on which integrate any other source of information. These three-dimensional models in dynamic GIS can provide an interesting tool for the environmental and territorial data management
Contribution of Leafy Vegetables to Dietary Nitrate Intake and Regulations
No full textVegetables constitute a major dietary source of nitrate, contributing to the daily dietary intake for a percentage ranging from 30 to 94%. Although nitrate itself is relatively non-toxic, or even beneficial, the possible harmful effects of nitrate derived compounds on human health arouse public concern and have led to the development of government
regulations and monitoring programs aimed at protecting the public health. In this
perspective, have been set an acceptable daily intake for nitrates and maximum levels
of nitrate content for several vegetables, paying particular attention to some leafy vegetables, characterized by a high capacity to accumulate nitrates. This chapter focuses
on the main factors concerning nitrate accumulation in vegetables and their contribution
to nitrate intake in the human diet, taking into account the recent EU Regulation No. 1258/2011 and the Scientific Opinion of the Panel on Contaminants in the Food chain (CONTAM) of the European Food Safety Authority (EFSA)
Glucosinolate profile of Eruca sativa, Diplotaxis tenuifolia and Diplotaxis erucoides grown in soil and soilless systems
No full textA B S T R A C T
Soilless cultivation systems (SCS) are increasingly used to produce high quality baby-leaf arugula, appreciated by
consumers for its pungent taste, due to the content of glucosinolates (GLS). Given all of the health benefits
attributed to GLSs, there is great interest in understanding whether and how soilless growing systems may affect
the GLS profile of arugula. For this purpose, a study was conducted to compare the GLS profile of Diplotaxis
erucoides, D. tenuifolia, and Eruca sativa grown side-by-side under protected environment in a conventional soilsystem
(CSS) and in a SCS. Genotype and growing-system resulted in a significant effect on GLS content, while
the resulting qualitative GLS profile was species-specific. Despite the growing-system, six different GLSs were
identified from plants of D. tenuifolia and E. sativa, while only sinigrin was detected in plants of D. erucoides. Total
GLS content was on average 9.85, 8.23, and 7.96 mg g−1 of dry weight in D. erucoides, D. tenuifolia, and E. sativa,
grown in CSS, respectively. The same three species grown in SCS synthesized 36%, 51%, and 41% more GLSs
than plants grown in CSS, respectively. Soilless cultivation may be adopted to increase the GLS content and
enhance the nutritional quality of brassicas leafy vegetables.
1. Introduction
Brassicaceae are among the oldest cultivated crops (Schmidt and
Bancroft, 2011) with a production across Europe estimated at approximately
70 million tons/annum, and are considered a rich source of
health-promoting phytochemicals (Avato and Argentieri, 2015). They
are commonly referred to as the “mustard” (from the Latin mustum
ardens) plant family, due to the sharp, potent flavour attributable to
their main sulphur metabolites, the glucosinolates (GLSs) (Björkman
et al., 2011; Petropoulos et al., 2017). When plant tissues are crushed or
powdered, they are hydrolysed releasing the typical hot, pungent
mustard components that are associated with the botanical family.
While Brassicaceae contain several phytonutrients, GLSs are their most
commonly studied constituents (Argentieri et al., 2012; Argentieri
et al., 2011; Björkman et al., 2011; D’Antuono et al., 2008). Although
anti-nutritional effects, resulting in goitre and liver damage in animals
have been reported for GLSs (Cartea and Velasco, 2008; Tripathi and
Mishra, 2007), several epidemiological studies have shown that in
humans, high consumption of Brassica vegetables is inversely linked to
cancer risk (Fimognari and Hrelia, 2007; Petropoulos et al., 2017).
Moreover, it has been shown that GLSs and their breakdown product
Nitrate in Leafy Vegetables: Toxicity and Safety Measures
No full textVegetables constitute a major dietary source of nitrate, contributing to the daily dietary intake for a percentage ranging from 30 to 94%. Although nitrate itself is relatively non-toxic, or even beneficial, the possible harmful effects of nitrate derived compounds on human health arouse public concern and have led to the development of government regulations and monitoring programs aimed at protecting the public health. In this perspective, have been set an acceptable daily intake for nitrates and maximum levels of nitrate content for several vegetables, paying particular attention to some leafy vegetables, characterized by a high capacity to accumulate nitrates. This chapter focuses on the main factors concerning nitrate accumulation in vegetables and their contribution to nitrate intake in the human diet, taking into account the recent EU Regulation No. 1258/2011 and the Scientific Opinion of the Panel on Contaminants in the Food chain (CONTAM) of the European Food Safety Authority (EFSA)
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