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A pollen, mint kulcs: mézek botanikai eredetének és antioxidáns kapacitásának összefüggései : [absztrakt]
Full text linkAz Asclepias syriaca és Gaillardia pulchella allelopátiás hatásainak morfológiai vizsgálata Bromus tectorum-on rhizotron rendszerben : [absztrakt]
Full text linkInfluence of X-ray irradiation on spectroscopic properties of TmF₃-doped fluoride (CaF₂ and BaF₂) crystals
Full text linkRare-earth ions-doped fluorides crystals have been extensively investigated due to the possible use in various applications like medicine, energy or laser materials, optical amplifiers, quantum materials or scintillators [1]. In this regard the interaction of X-ray irradiation with fluoride crystals has significant implications for both fundamental materials science and applied radiation technologies
Investigating the enhanced thermal resistance of sustainable mica/PA11 composites via thermogravimetric analysis
Full text linkCastor-oil derivative polyamide 11 (PA11) is a promising candidate as a sustainable industrial material, where high-performance polymers are required. In this study the effect of a natural clay, muscovite mica, on thermal resistance of PA11 is investigated. Mica/PA11 composites were prepared by melt-compounding to achieve samples with filler contents of up to 5 wt% using two particle sizes. Enhanced thermal stability was evidenced by an enhanced temperature at maximum decomposition rate. Increments by an average of 13 °C were detected, which were higher in case of samples containing larger particles, while surface treatment changed the contribution of the decomposition pathways. Comparing these findings with the results on crystallinity ratio and water uptake, the increased thermal stability was attributed to the barrier effect of the lamellar impermeable fillers
Geospatial assessment of soil determinants driving the distribution and invasion risk of Asclepias syriaca across Hungary : [abstract]
Full text linkMolecular nutrition meets environmental science: a review of novel bioactive compounds and their ecotoxicological impact
Full text linkMolecular nutrition has introduced a range of novel bioactive compounds, including synthetic micronutrients, bioactive peptides, and nanoformulations, designed to enhance health and metabolic function. However, their fate in the environment remains largely unexplored. These compounds can enter ecosystems through excretions, agricultural runoff, or industrial processes, with potential impacts on soil and aquatic organisms. This review examines the environmental pathways and ecotoxicological risks associated with emerging nutritional molecules. Analytical techniques such as LC-MS/MS and HPLC for detecting these substances in environmental matrices are discussed. Current regulatory frameworks often overlook these compounds, despite evidence of bioaccumulation or endocrine disruption in non-target species. By linking biotechnology, analytical chemistry, and ecotoxicology, this paper highlights the urgent need for environmental risk assessments in the development of future nutritional products. A sustainable approach to molecular nutrition must consider both human health benefits and ecological safety
Advanced hybrid thin films based on montmorillonite functionalized with perovskite nanostructures : [abstract]
Full text linkEvaluation of the nutritional profile of red onion (Allium cepa L.) - preliminary results
Full text linkOnion (Allium cepa L.) is one of the most important vegetables plants cultivated and consumed worldwide, being appreciated both for its culinary role and for its health benefits. The specialized literature shows that onion has a high nutritional value, being a source of vitamins, minerals, dietary fiber, simple carbohydrates and bioactive compounds (flavonoids, polyphenols, sulfur compounds). The red variety is distinguished by a higher content of anthocyanin pigments and flavonoids, which give it superior antioxidant properties and a sweeter taste than white onion. The aim of this work is to evaluate the basic nutritional composition (proximate composition) of a red onion assortment sold in local agri-food markets. Preliminary determinations of moisture, ash, protein, lipid, fiber and carbohydrate content revealed a significant contribution of carbohydrates and fiber, complemented by a reduced amount of protein and lipid. The results obtained: 10.12-11.06% moisture, 3.38-3.87% ash, 2.62-3.47% protein, 1.51-2.04% fat, 6.49- 7.22% fibers, and 72.48-75.31% carbohydrates propose the use of red onion powder as a natural additive in food with added value or as an alternative source in animal feed ingredients. The results confirm that red onion is a valuable food due to its basic composition and can contribute to maintaining a balanced and healthy diet
The influence of water content on the mineral content of Urtica dioica plant
Full text linkUrtica dioica is a perennial species valued for its medicinal and nutritional potential. Its development is strongly influenced by water status, both in the soil and in the plant itself. Minerals play a crucial role in plant development, supporting key processes such as photosynthesis, protein synthesis, and stress resistance. The aim of this study was to investigate the influence of water content on the development and mineral content of Urtica dioica under natural conditions. Moisture and mineral contents were determined through thermogravimetric methods and portable spectrophotometric analysis. The results indicate that maximum hydration was recorded in spring, when moderate temperatures and balanced air humidity created favorable conditions for plant growth. In contrast, during summer, tissue water content declined while mineral concentration increased, even though rainfall and soil moisture were higher. This pattern highlights the decisive role of atmospheric conditions, particularly temperature and air humidity, in shaping the seasonal water balance of Urtica dioica