11 documents found, page 1 of 2
Nutritional profile, phytonutrient composition and biocidal properties of Portu...
Paschoalinotto, Beatriz H.; Chrysargyris, Antonios; Añibarro-Ortega, Mikel; Pires, Tânia C.S.P.; Mandim, Filipa; Dias, Maria Inês; Tzortzakis, NikolaosThe contribution of the ammonium: total nitrogen ratio (Nr0.01-0.15) in the nutrient solution on chemical profile and bioactive characteristics of Portulaca oleracea, investigated. Increased Nr levels resulted in increased proteins, total fats, carbohydrates and oxalic acid in leaves and stems, but decreased yield. The only detected tocopherol isoforms were alpha- and beta-tocopherol, with the former to reveal ...
Magnesium and manganese induced changes on chemical, nutritional, antioxidant a...
Oliveira, Izamara; Chrysargyris, Antonios; Finimundy, Tiane C.; Carocho, Márcio; Santos-Buelga, Celestino; Calhelha, Ricardo C.; Tzortzakis, Nikolaoscomposition was determined using standard methods. Free sugars, fatty acids, organic acids, tocopherols, and phenolic compounds were analyzed using various HPLC and GC devises. The extract’s antimicrobial, antioxidant, cytotoxicity, and anti-inflammatory activity were assessed. The results indicated that Mg enrichment negatively affected plant growth and mineral accumulation but improved photosynthetic performa...
The influence of magnesium and manganese cations on the chemical and bioactive ...
Oliveira, Izamara; Chrysargyris, Antonios; Finimundy, Tiane C.; Carocho, Márcio; Santos-Buelga, Celestino; Calhelha, Ricardo C.; Tzortzakis, NikolaosThis research investigated the effects of hydroponic cultivation with enriched concentrations of magnesium (+Mg), manganese (+Mn), a combination of +Mg and +Mn, or decreased concentrations of these minerals (control) on the nutritional, chemical, and bioactive attributes of purple and green basil. While Mn significantly increased the growth of purple basil and affected the composition of essential oil and miner...
Effects of the extraction techniques on the chemical composition and bioactive ...
Oliveira, Izamara; Chrysargyris, Antonios; Heleno, Sandrina A.; Carocho, Márcio; Calhelha, Ricardo C.; Dias, Maria Inês; Petrović, JovanaThe present study aims to determine the combined effect of cropping system and irrigation regime on the chemical composition and bioactive properties of lemon balm aerial parts. For this purpose, lemon balm plants were grown under two farming systems (conventional farming vs organic farming) and two irrigation levels (full irrigation vs deficit irrigation) and harvested twice throughout the growing period. The ...
Comparison between different extraction methods in the recovery of bioactive mo...
Oliveira, Izamara; Heleno, Sandrina A.; Carocho, Márcio; Alves, Maria José; Vaz, Josiana A.; Dias, Maria Inês; Buelga, Celestino S.Melissa officinalis L., from the Lamiaceae family, is one of the most important medicinal and aromatic plants with potential in the market. With the passing of time, the use of medicinal plants in the treatment of some illness has gone from the simplest forms of local treatment to the industrial manufacture of phytotherapics. In addition to their medicinal effect, they can also be used in the form of infusions ...
Chemical and bioactive characterization of Melissa officinalis L. subjected to ...
Oliveira, Izamara; Heleno, Sandrina A.; Carocho, Márcio; Dias, Maria Inês; Santos-Buelga, Celestino; Petropoulos, Spyridon Α.; Tzortzakis, NikolaosMelissa officinalis L. (lemon balm) is a species of the Lamiaceae family which has been consumed for several decades in the form of decoctions, infusions or directly in food preparations. In addition to its recognized effects in helping digestion problems, rheumatism or headaches, several studies have demonstrated its antioxidant, hypoglycemic, hypolipidemic, antimicrobial, anticancer, antidepressant, anxiolyti...
The sustainable use of cotton, hazelnut and ground peanut waste in vegetable cr...
Petropoulos, Spyridon Α.; Fernandes, Ângela; Plexida, Sofia; Pereira, Carla; Dias, Maria Inês; Calhelha, Ricardo C.; Chrysargyris, AntoniosThe environmental burden from crop production byproducts is gradually increasing and necessitates the sustainable management of waste towards a circular economy approach. In the present study, three byproducts (cotton ginning waste (CGW), ground hazelnut husks (GHH) and ground peanut husks (GPH)) were evaluated in lettuce cultivation. For this purpose, the tested materials were incorporated in soil at two diffe...
Chemical composition and plant growth of Centaurea raphanina subsp. mixta plant...
Petropoulos, Spyridon Α.; Fernandes, Ângela; Dias, Maria Inês; Pereira, Carla; Calhelha, Ricardo C.; Chrysargyris, Antonios; Tzortzakis, NikolaosThe aim of this report was to study the e ect of salinity (control: 2dS/m, S1: 4 dS/m and S2: 6 dS/m) and harvest time (first harvest on 9 May 2018 and second harvest on 19 April 2018) on the growth and the chemical composition of Centaurea raphanina subsp. mixta plants. The plants of the first harvest were used for the plant growth measurements (fresh weight and moisture content of leaves, rosette diameter, nu...
Biostimulants application alleviates water stress effects on yield and chemical...
Petropoulos, Spyridon Α.; Fernandes, Ângela; Plexida, Sofia; Chrysargyris, Antonios; Tzortzakis, Nikos; Barreira, João C.M.; Barros, LillianThe increasing scarcity of water demands proper water management practices to ensure crop sustainability. In this study, the effect of drought stress and biostimulants application on the yield and chemical composition of green pods and seeds of common bean (Phaseolus vulgaris L.) was evaluated. For this purpose, four commercially available biostimulant products, namely Nomoren (G), EKOprop (EK), Veramin Ca (V),...
Effect of phosphorus application rate on Mentha spicata L. grown in deep flow t...
Chrysargyris, Antonios; Petropoulos, Spyridon Α.; Fernandes, Ângela; Barros, Lillian; Tzortzakis, Nikolaos; Ferreira, Isabel C.F.R.The present study evaluated the impact of phosphorus application rate on plant growth and physiological parameters, antioxidant activity, chemical composition, and essential oil yield and composition of hydroponically grown spearmint plants. Increased P levels resulted in high dry matter content of the aerial part. Antioxidant activity of spearmint leaves was significantly higher at the highest P levels. Althou...