Evaluation of phytochemicals content, antioxidant activity and mineral composition of selected edible flowers

2019 ◽  
Vol 11 (5) ◽  
pp. 471-478 ◽  
Author(s):  
S. Araújo ◽  
C. Matos ◽  
E. Correia ◽  
M.C. Antunes
Keyword(s):  
Antioxidant Activity ◽  
Mineral Composition

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.

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.

scholarly journals Nutritional Value, Mineral Composition, Secondary Metabolites, and Antioxidant Activity of Some Wild Geophyte Sedges and Grasses

Plants ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 569
Author(s):  
Saud L. Al-Rowaily ◽  
Ahmed M. Abd-ElGawad ◽  
Suliman M. Alghanem ◽  
Wafa’a A. Al-Taisan ◽  
Yasser A. El-Amier
Keyword(s):  
Antioxidant Activity ◽  
Secondary Metabolites ◽  
Mineral Composition ◽  
Nutritive Value ◽  
Nile Delta ◽  
Natural Antioxidants ◽  
Wild Plants ◽  
Bioactive Metabolites ◽  
Scavenging Activity ◽  
Bioactive Constituents

Geophytes are plants with underground storage organs including bulbs, corms, tubers, and rhizomes, often physiologically active and able to survive during harsh environmental conditions. This study is conducted to assess the nutritive value, mineral composition, bioactive metabolites, and antioxidant activity of five wild geophytes (Cyperus capitatus, C. conglomeratus, Elymus farctus, Lasiurus scindicus, and Panicum turgidum) collected from the Nile Delta coast and inland desert. The proximate composition including dry matter, moisture content, ash content, fiber, fat, protein, sucrose, and glucose were determined. Also, total carbohydrates, total digestible nutrients (TDN), and nutritive values were calculated. Macro- and micro-minerals were also determined in the studied geophytes. Total phenolics, total flavonoids, alkaloids, saponins, and tannins were determined. Antioxidant activity was evaluated based on 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicle scavenging. Based on the nutritive value, the studied geophytes are ranked as follows: E. farctus > C. conglomeratus > L. scindicus > P. turgidum > C. capitatus. The mineral analysis reveals a sufficient amount of macro- and micro-elements in the studied geophytes while the microelements levels in the studied wild plants exist as Fe > Mn > Zn > Cu. Cyperus conglomeratus attained the highest concentrations of all determined secondary metabolites. On the other hand, C. conglomeratus, C. capitatus, and P. turgidum extracts showed strong scavenging activity (EC50 < 1 mg mL−1), while extracts of E. farctus and L. scindicus exhibited moderate scavenging activity (1 ≤ EC50 ≤ 2 mg mL−1). The present data reveal that geophytes under investigation could be used as good forage plants, especially in arid habitats. In addition, C. conglomeratus could be a potentially important candidate for natural antioxidants as it attained high contents of the bioactive constituents.

scholarly journals Chemical Composition and Antioxidant Activity of Walnut Pollen Samples

2015 ◽  
Vol 43 (2) ◽  
pp. 361-365 ◽  
Author(s):  
Sina COSMULESCU ◽  
Ion TRANDAFIR ◽  
Violeta NOUR
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Mineral Composition ◽  
Colorimetric Assay ◽  
Colorimetric Method ◽  
Antioxidant Properties ◽  
Total Phenols ◽  
Total Flavonoids Content ◽  
The Subject

Chemical composition of pollen is highly varied depending on the plant species from which it comes and has been the subject of numerous comparative studies. The aim of this study was to determine chemical composition and antioxidant activity of walnut pollen samples and compare them with those of bee pollen. Total phenols content, total flavonoids content, antioxidant activity and mineral composition were studied using walnut pollen samples from three walnut genotypes cultivated in Romania. Total phenols content was determined by colorimetric assay and their amount varied between 10.8 and 17.64 mgGAE/g per genotype. Determination of flavonoids was done by aluminium nitrate colorimetric method and total flavonoid contents in walnut pollen ranged from 7.32 to 7.95 mgQE/g. The antioxidant capacity of pollen extracts was assessed through the scavenging effects on DPPH and a concentration-dependent genotype, and it varied between 13.78 and 15.04 mg Trolox/g. In terms of mineral composition, walnut pollen appears to be a good source of potassium (859.14 mg/100 g), magnesium (263.77 mg/100 g), calcium (71.72 mg/100 g), iron (27.19 mg/100 g), sodium (10.52 mg/100 g), zinc (5.69 mg/100 g), manganese (3.98 mg/100 g), copper (1.28 mg/100 g), chromium (0.39 mg/100 g) and selenium (0.036 mg/100 g). The results obtained indicate that walnut pollen is an important source of total phenols showing antioxidant properties and mineral composition that could be beneficial to human health.

scholarly journals Mineral Composition, Total Phenol Content and Antioxidant Activity of a MacrolichenEverniastrum cirrhatum(Fr.) Hale (Parmeliaceae)

2011 ◽  
Vol 8 (4) ◽  
pp. 1886-1894 ◽  
Author(s):  
T. R. Prashith Kekuda ◽  
K. S. Vinayaka ◽  
D. Swathi ◽  
Y. Suchitha ◽  
T. M. Venugopal ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Mineral Composition ◽  
The Body ◽  
Total Phenol ◽  
Appreciable Amount ◽  
Total Phenol Content ◽  
Phytochemical Analysis ◽  
Phenol Content ◽  
Metal Chelating ◽  
Soxhlet Apparatus

In the present study, we investigated for the first time mineral composition, total phenol content and antioxidant activity of a foliose macrolichenEverniastrum cirrhatum(Fr.) Hale (Parmeliaceae) from Bhadra wildlife sanctuary, Karnataka, India. Mineral content of the lichen was estimated by Atomic absorption spectrophotometer after acid digestion. The secondary metabolites were detected by thin layer chromatography (TLC) and phytochemical assays. The lichen material was extracted with methanol in soxhlet apparatus. Total phenol content was estimated by folin ciocalteu method. Antioxidant activity was determined by DPPH, Ferric reducing and metal chelating assays. Among the principal elements, calcium was found in high concentration followed by magnesium, potassium and phosphorus. Among trace elements, iron was detected in high amount followed by zinc, manganese and copper. The DPPH radical scavenging activity was found to be dose dependent with an IC50of 6.73 μg/mL. In ferric reducing assay, the absorbance increased with the concentration of extract suggesting reducing power. The extract exhibited good metal chelating activity with an IC50value of 29.28 μg/mL. Total phenol content was 101.2 mg tannic acid equivalents per gram of extract. Phytochemical analysis revealed the presence of alkaloids, saponins, tannins and terpenoids. TLC revealed atranorin, salazinic acid and protolichesterinic acid. The lichen can be consumed as a source of minerals required for the body as appreciable amount of minerals has been detected. The marked antioxidant activity may be attributed to the presence of phenol content in the extract. Further studies on isolation of metabolites and their bioactivities are under investigation.

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