Black locust flowers: antioxidant extraction kinetics, reducing capacity, mineral composition, and antioxidant activity

2021 ◽  
pp. 1-9
Author(s):  
Ivana A. Boskov ◽  
Ivana M. Savic Gajic ◽  
Ivan M. Savic ◽  
Boban R. Spalovic ◽  
Nada D. Strbac
Keyword(s):  
Antioxidant Activity ◽  
Mineral Composition ◽  
Black Locust ◽  
Extraction Kinetics ◽  
Reducing Capacity

scholarly journals Relationships Linking the Colour and Elemental Concentrations of Blossom Honeys with Their Antioxidant Activity: A Chemometric Approach

Agriculture ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 702
Author(s):  
Monika Kędzierska-Matysek ◽  
Anna Teter ◽  
Małgorzata Stryjecka ◽  
Piotr Skałecki ◽  
Piotr Domaradzki ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Physicochemical Properties ◽  
Black Locust ◽  
Antioxidant Properties ◽  
Principal Component ◽  
Botanical Origin ◽  
Antioxidant Parameters ◽  
Colour Parameters ◽  
Hue Angle ◽  
Chemometric Approach

The antioxidant activity of honey depends on the botanical origin, which also determines their physicochemical properties. In this study, a multivariate analysis was used to confirm potential relationships between the antioxidant properties and colour parameters, as well as the content of seven elements in five types of artisanal honey (rapeseed, buckwheat, linden, black locust, and multifloral). The type of honey was found to significantly influence most of its physicochemical properties, colour parameters, and the content of potassium, manganese and copper. Antioxidant parameters were shown to be significantly positively correlated with redness and concentrations of copper and manganese, but negatively correlated with the hue angle and lightness. The principal component analysis confirmed that the darkest buckwheat honey had the highest antioxidant activity in combination with its specific colour parameters and content of antioxidant minerals (manganese, copper and zinc). The level of these parameters can be potentially used for the identification of buckwheat honey.

scholarly journals The Impact of Salt Stress on Plant Growth, Mineral Composition, and Antioxidant Activity in Tetragonia decumbens Mill.: An Underutilized Edible Halophyte in South Africa

Horticulturae ◽  
2021 ◽  
Vol 7 (6) ◽  
pp. 140
Author(s):  
Avela Sogoni ◽  
Muhali Jimoh ◽  
Learnmore Kambizi ◽  
Charles Laubscher
Keyword(s):  
Antioxidant Activity ◽  
Plant Growth ◽  
Mineral Composition ◽  
Nutrient Solution ◽  
Crop Production ◽  
Saline Water ◽  
Total Yield ◽  
Control Treatment ◽  
Antioxidant Power ◽  
The Impact

Climate change, expanding soil salinization, and the developing shortages of freshwater have negatively affected crop production around the world. Seawater and salinized lands represent potentially cultivable areas for edible salt-tolerant plants. In the present study, the effect of salinity stress on plant growth, mineral composition (macro-and micro-nutrients), and antioxidant activity in dune spinach (Tetragonia decumbens) were evaluated. The treatments consisted of three salt concentrations, 50, 100, and 200 mM, produced by adding NaCl to the nutrient solution. The control treatment had no NaCl but was sustained and irrigated by the nutrient solution. Results revealed a significant increase in total yield, branch production, and ferric reducing antioxidant power in plants irrigated with nutrient solution incorporated with 50 mM NaCl. Conversely, an increased level of salinity (200 mM) caused a decrease in chlorophyll content (SPAD), while the phenolic content, as well as nitrogen, phosphorus, and sodium, increased. The results of this study indicate that there is potential for brackish water cultivation of dune spinach for consumption, especially in provinces experiencing the adverse effect of drought and salinity, where seawater or underground saline water could be diluted and used as irrigation water in the production of this vegetable.

scholarly journals Selected dried fruits as a source of nutrients

2021 ◽  
Author(s):  
Iga Rybicka ◽  
Justyna Kiewlicz ◽  
Przemysław Łukasz Kowalczewski ◽  
Anna Gliszczyńska-Świgło
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Capacity ◽  
Dietary Fiber ◽  
Mineral Composition ◽  
Nutritional Value ◽  
Sea Buckthorn ◽  
Dried Fruits ◽  
Goji Berry ◽  
Rose Hip ◽  
Unhealthy Snacks

AbstractDried fruits are an excellent alternative to unhealthy snacks. Twelve commercially available dried fruits were selected: dates, raisins, prunes, Goji berry, chokeberry, rose hip, sea buckthorn, berberis, physalis, haritaki, noni and juniper. The nutritional value in terms of moisture, ash, protein, fat, carbohydrate, dietary fiber, energy value, mineral composition, antioxidant activity and tannins was compared. It is a novelty in the literature in relation to the particular analytes (e.g., minerals, tannins) and/or fruits (e.g., berberis, noni, haritaki). Especially rich in protein were Goji berry (13.3%), sea buckthorn (9.3%), noni (8.9%) and physalis (8.0%); in fat − sea buckthorn (11.2%); in dietary fiber (4.4–53.0%) − most of analyzed products. High antioxidant capacity was noticed for haritaki, berberis, rose hip, Goji berry, and physalis. An important source of minerals was 100 g of: noni (345 mg of Ca; 251 mg of Mg), rose hip (844 mg of Ca; 207 mg of Mg), juniper (564 mg of Ca), sea buckthorn (58 mg of Fe), berberis (24 mg of Fe) and haritaki (14 mg of Fe). The nutritionally attractive dried fruits have the potential for wider application in food formulations.

Study on the Extraction and Antioxidant Activity of Total Flavonoids from Netted Melon with Ultrasonic

2013 ◽  
Vol 807-809 ◽  
pp. 2003-2008
Author(s):  
Xi Yun Sun ◽  
Shu Yang ◽  
Chang Liu ◽  
Tian Lai Li ◽  
Ya Qi Duan
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging ◽  
Extraction Yield ◽  
Oxygen Radical ◽  
Orthogonal Test ◽  
Total Flavonoids ◽  
Single Factor ◽  
Orthogonal Tests ◽  
Pyrogallol Autoxidation ◽  
Reducing Capacity

The single factor and orthogonal tests were designed to study the perfect conditions of extracting total flavononids from Netted Melon and the antioxidant activity of the extract. Firstly,the best conditions of extracting total flavononids from Netted Melon by single factor and orthogonal test was:ultrasonic power was 60%(250W) ,concentration of ethanol was 90%(V/V),extraction time was 60min ,volume of ethanol was 25mL.Under these conditions,the extraction yield of flavonoids was 0.2247 mg/g,which was 88.43% of the result of soxhlet,while,the time was 25% of soxhlet,from which the work efficiency was greatly improved. Then Prussian blue, Pyrogallol autoxidation, Phenanthroline and DPPH were used to research the antioxidant activity of flavonoid. It shows that flavonoid of Netted Melon can remove DPPH and hydroxyl radical strongly, also it has reducing capacity, but its ability of oxygen radical scavenging is poor.

scholarly journals Centesimal and mineral composition and antioxidant activity of the bacaba fruit peel

2019 ◽  
pp. 509-517
Author(s):  
Bruna Mendes Correa ◽  
Luana Baldissera ◽  
Flávia Rodrigues Barbosa ◽  
Elton Brito Ribeiro ◽  
Carla Regina Andrighetti ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Mineral Composition ◽  
Fruit Peel

Bioactive compounds, antioxidant activity and mineral composition of fruits of raspberry cultivars grown in subtropical areas in Brazil

Fruits ◽  
2013 ◽  
Vol 68 (3) ◽  
pp. 209-217 ◽  
Author(s):  
Luana Aparecida Castilho Maro ◽  
Rafael Pio ◽  
Mayara Neves Santos Guedes ◽  
Celeste Maria Patto de Abreu ◽  
Paula Nogueira Curi
Keyword(s):  
Antioxidant Activity ◽  
Mineral Composition ◽  
Bioactive Compounds

scholarly journals Shading Affects Yield, Elemental Composition and Antioxidants of Perennial Wall Rocket Crops Grown from Spring to Summer in Southern Italy

Plants ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 933
Author(s):  
Gianluca Caruso ◽  
Luigi Formisano ◽  
Eugenio Cozzolino ◽  
Antonio Pannico ◽  
Christophe El-Nakhel ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Mineral Composition ◽  
Southern Italy ◽  
Ascorbic Acid Content ◽  
Dry Weight ◽  
Light Extinction ◽  
Lipophilic Antioxidant ◽  
Cropping Seasons ◽  
Leaf Nitrate ◽  
Yield Decrease

Shading nets have been increasingly drawing research interest, as they allow us to improve the environmental conditions for greenhouse-grown crops. The effects of two shading nets (50% and 79% shading degree), plus an unshaded control, on yield, mineral composition and antioxidants of perennial wall rocket (Diplotaxis tenuifolia L.-D.C.) grown under tunnels in southern Italy were determined. The shading application resulted in a yield decrease, compared to the unshaded control, except for the highest production under 50% shading in July. The highest yield was recorded in the April–May and May–June and the lowest in July. Similar trends were recorded for plant dry weight, leaf number per rosette and mean weight, but the latter showed the highest value under 79% light extinction in July. The rocket leaves were brighter in the summer cycles than in the spring ones. Leaf nitrate was highest in spring and under 79% shading. Potassium, phosphorus, calcium and magnesium showed the highest values in spring and in the unshaded control. The lipophilic antioxidant activity showed the highest values under the 79% shading net in the spring cropping seasons, whereas in July it did not significantly differ from 50% light extinction. The hydrophilic antioxidant activity always attained the highest values in the unshaded control. The unshaded leaves had the highest total phenol accumulation when grown in April–May and the lowest in July. The total ascorbic acid content was always highest in the unshaded control leaves compared to the shading treatments. Fifty percent crop shading is, therefore, an effective sustainable tool for increasing the yield of perennial wall rocket leaves in July, when the light intensity under the plastic tunnel exceeds the plant requirements, also resulting in a mineral composition that is not significantly different from that of the unshaded crops.

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