528 research outputs found
Silicon biofortification of leafy vegetables and its bioaccessibility in the edible parts
No full textBACKGROUND: Themineral silicon (Si) is an essential element for humans and a general component of the diet found mainly in plant-based foods. The aim of this study was to obtain Si biofortificated leafy vegetables (tatsoi, mizuna, purslane, basil, Swiss chard, and chicory) to use for the fresh-cut products (ready to use). For the production of biofortified plants, a floating system with 0, 50 and 100 mg/L of Si in nutrient solution,wasused. In addition, the assessmentofbioaccessibilityofbiofortified plants, by in vitro gastro-digestion process, was performed.
RESULTS: The added silicon in nutrient solution did not influence yield and colour of vegetables but a species-related accumulation of Si (expressed as SiO2) was found: from 18 to 69 mg/kg fresh weight (FW) in tatsoi, from 19 to 106 mg/kg FW in mizuna, from 15 to 93 mg/kg FW in purslane, from 41 to 294 mg/kg FW in basil, from 17 to 76 mg/kg FW in Swiss chard,and from 23 to76 mg/kg FW in chicory. The Si became bioaccessible in all species considered in a range from 23% (basil) to 64% (chicory).
CONCLUSION: The application of Si to the nutrient solution in the range of 50–100 mg/L allows biofortification of leafy vegetables. In addition, the biofortified vegetables showed, on average, more bioaccessible Si, with respect to unbiofortified vegetables
Quality and nutritional evaluation of regina tomato, a traditional long-storage landrace of puglia (Southern Italy)
No full textRegina tomato, a locally cultivated Italian landrace, is listed as an item in the ‘List of Traditional Agri-Food Products’ of the Italian Department for Agriculture and itemised as ‘Slow Food presidium’ by the Slow Food Foundation. It is classified as a long-storage tomato since it can be preserved for several months after harvest thanks to its thick and coriaceous skin. Three ecotypes were investigated for main physical and chemical traits both at harvest and after three months of storage. Experimental results indicate that this tomato landrace has a qualitative profile characterized by high concentrations of tocopherols, lycopene and ascorbic acid (maximum 28.6 and 53.7 mg/kg fresh weight, FW, and 0.28 mg/g FW, respectively) even after a long storage time, together with lower average Total Soluble Solids. The initial and post-storage contents of the bioactive compounds changed at a different rate in each ecotype (i.e., in Monopoli Regina tomato the highest content of α-Tocopherol, thereafter reduced to the same level of the other two ecotypes). These results indicate unique and unmistakable features of this long-storage tomato, closely linked to the geographic origin area that include both natural (available technical inputs) and human (specific cultural practices) factors
Calcium biofortification and bioaccessibility in soilless “baby leaf” vegetable production
No full textCalcium is an essential nutrient for human health, because it is a structural component and takes part in a variety of biological processes. The aim of this study was to increase Ca content of baby leaf vegetables (BLV: basil, mizuna, tatsoi and endive), as fresh-cut products. For the production of biofortified BLV, a floating system with two level of Ca (100 and 200 mg L−1) in the nutrient solution was used. In addition, the assessment of bioaccessibility of Ca, by in vitro digestion process, was performed. In all vegetables, the Ca biofortification (200 mg L−1) caused a significant Ca enrichment (9.5% on average) without affecting vegetables growth, oxalate contents and marketable quality. Calcium bioaccessibility ranged from 25% (basil) to 40% (endive) but the biofortified vegetables showed more bioaccessible Ca. These results underline the possibility to obtain Ca biofortified BLV by using agronomic approaches
NaCl stress enhances silicon tissue enrichment of hydroponic “baby leaf” chicory under biofortification process
No full textThe effects of saline stress on the silicon (Si) tissue enrichment (Si biofortification) of ready-to-eat âbaby leafâ chicory in hydroponic floating system were studied. Four combinations of Si and NaCl levels in the nutrient solution were compared: i) 0 mM Si - 0 mM NaCl (âControlâ); ii) 3.6 Si - 0 NaCl (âSiâ); iii) 0 Si - 50 NaCl (âNaClâ); and iv) 3.6 Si - 50 NaCl (âSi + NaClâ). Si in combination with salt stress enhanced the Si tissue enrichment with respect to biofortification under control conditions [11.4 vs 3.06 mg 100 gâ1fresh weight (FW), respectively]. However, Si was not able to restore growth of plants under salinity compared to normal conditions. Bioaccessible Si in chicory under âSi + NaClâ treatment was the highest in the experiment (3.73 mg 100 gâ1FW). The nitrate content was not influenced by salinity neither by Si, while the oxalate content was extremely low in all treatments, thus not compromising the enhanced nutritional value of the biofortified chicory. Application of salt stress could be considered an effective strategy to enhance the silicon tissue enrichment of hydroponic chicory under biofortification process
Document on the royal appointment of Donato in the Regimiento de Fixo de la Louisiana.to subteniente of infantry.
No full textDocument on the royal appointment of Donato in the Regimiento de Fixo de la Louisiana.to subteniente of infantry
Document on the royal appointment to subteniente of infantry for Donato in the Regimiento de Fixo de la Louisiana.
No full textDocument on the royal appointment to subteniente of infantry for Donato in the Regimiento de Fixo de la Louisiana
The Role of Insects in Medical Engineering and Bionics: Towards Entomomedical Engineering
No full textInsects are important agents in ecosystems. Their diverseness and developed coping mechanisms also make them interesting for direct application and as a source of inspiration in medical engineering. We summarized the main contribution of insects in biomedical applications. Medical centers in North America, and Europe use fly larvae for maggot therapy to remove necrotic tissue, decrease infection risk, and improve wound healing. Ant mandibles are used as a suturing technique by African tribes and as sources of inspiration for surgical clamps. Both the mosquito fascicle and the wasp ovipositor are sources of inspiration for the design of medical needles. Herein, a new research field called 'entomomedical engineering,' is proposed. We define entomomedical engineering as the branch of engineering that uses insects either directly or as a source of inspiration to design and develop medical treatments or instruments. In addition, we want to emphasize the importance of preserving insects because of their function in the ecosystem, medicine, and medical engineering. Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Medical Instruments & Bio-Inspired Technolog
Author Correction: Growth hormone regulates neuroendocrine responses to weight loss via AgRP neurons (Nature Communications, (2019), 10, 1, (662), 10.1038/s41467-019-08607-1)
No full text© 2019, The Author(s). The original version of this Article contained an error in the spelling of the author J. Donato Jr, which was incorrectly given as Donato J. Jr. This has now been corrected in both the PDF and HTML versions of the Article
Characters in Search of an Author. Unfolding the territorial governance of Italian Metropolitan Cities.
No full textL'abstract è presente nell'allegato / the abstract is in the attachmen
Pereira, l’ordine delle cose e la legge di Hume
No full textThe author discusses some remarks by Paolo Comanducci about his book L'ordine naturale delle cose. Particularly, he defends the idea of a strict connection between principle of equality, role of statutes and legal interpretation and asserts the importance of the humanities in ethics, politics and legal thought
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