scholarly journals Antioxidant Activities, Nutritional Composition and Antinutritional Properties of Two Leafy Vegetables (Cleome rutidosperma and Cassia tora) Consumed in Adamawa State, Nigeria

2020 ◽  
pp. 18-27
Author(s):  
Kiliobas Kiri Sha’a ◽  
Susan Artimas Pwakangdi
Keyword(s):  
Free Radicals ◽  
Antioxidant Activities ◽  
Reducing Power ◽  
Ethanolic Extract ◽  
Nutritional Composition ◽  
Leafy Vegetables ◽  
Cellular Damage ◽  
Cassia Tora ◽  
Antioxidant Power ◽  
Cleome Rutidosperma

Antioxidants are agents which scavenge free radicals and prevent cellular damage cause by them. They reduce the damage due to free radicals by neutralizing them before they can attack the cells. The aim of this research was to evaluate the antioxidant, nutritional and antinutritional properties of two leafy vegetables, Cleome rutidosperma and Cassia tora consumed in Adamawa State, Nigeria. 2, 2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) models were used to determine antioxidant activities of extracts. Nutritional composition and antinutritional properties were determined using standard procedures. There was a significant (p=0.05) decrease in the concentration of DPPH radical due to the scavenging activity of ethanol leaf extract of  Cleome rutidosperma compared to control/standard. In FRAP also, C. rutidosperma ethanolic extract exhibited higher ferric reducing power than C. tora. Proximate analysis revealed the nutrients for C. rutidosperma and C. tora as; crude protein (31.06±0.00% and 26.24±0.00%), fat (7.13±0.00% and 6.93±0.10%), ash (15.17±0.61% and 11.60±0.00%), crude fiber (11.06±0.01 and 13.19±0.10%), moisture (9.99±0.00% and 9.12±0.10%), NFE (25.60±0.10% and 32.94±0.10%) respectively. Antinutritionals in ethanolic extracts of C. rutidosperma and C. tora were; oxalates, saponins, tannins, cyanogenic glycosides, phytate and alkaloids. Both vegetables revealed good percentages of proteins which can be used to compliment other sources of protein. All antinutrients of extracts were within tolerable levels.

scholarly journals Evaluation and Comparison of the Antioxidant Activities and Nutritional Composition of Cucurbita maxima and Vigna unguiculata Leaf Extracts

2021 ◽  
pp. 29-39
Author(s):  
K. K. Sha’a
Keyword(s):  
Vigna Unguiculata ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Nutritional Composition ◽  
Leafy Vegetables ◽  
Human Consumption ◽  
Cucurbita Maxima ◽  
Phytochemical Screening ◽  
Antioxidant Power

Antioxidant activities and nutritional composition are essential ingredients normally considered in the choice of vegetables for human consumption. Leafy vegetables in particular, are regarded as protective foods in human diet due to their many health benefits. The aim of this research was to carry out the quantitative phytochemical screening, the antioxidant activities of extracts and determine the nutritional content of Cucurbita maxima and Vigna unguiculata leaves. Quantitative phytochemical screening were conducted using standard techniques. 2, 2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) assays were used to determine antioxidant activities of these extracts. Nutritional composition was determined using standard procedures.  Quantitative analysis revealed the phytochemicals in C. maxima and V. unguiculata as; saponins (1.03%, and 1.34%), tannins (3.49% and 2.60%), terpenoids (0.0% and 0.47%), flavonoids (2.81% and 4.11%), alkaloids (5.72% and 3.5%), phenols (4.02% and 3.83%) respectively. There was a significant (p=0.05) difference in radical scavenging activity of ethanol leaf extract of V. unguiculata comprared to C. maxima. In FRAP both plants’ extract revealed a good antioxidant reducing power at 100mg/ml (range 0.40 to 0.5 absorbance) at 700nM. Antioxidant activities of extracts is attributed to their flavonoid and phenolic contents. Proximate analysis revealed the nutrients for C. maxima and V. unguiculata as; crude protein (11.58% and 14.83%), crude fat (0.47% and 0.61%), ash (4.11% and 3.72%), crude fiber (6.95 and 4.68%), moisture (1.03% and 1.38%), carbohydrate (75.86% and 74.78%) respectively. This shows that the leaves are a good source of energy to both humans and animals. Also, both vegetables revealed good percentages of proteins which can be used to compliment other sources of protein.

scholarly journals ANTI-INFLAMMATORY ACTIVITY AND PHYTOCHEMISTRY OF EXTRACTS FROM THE ROOT BARK OF CALOTROPIS PROCERA (AIT.) R. BR. HEPATOPROTECTIVE MEDICINAL PLANT FROM BURKINA FASO

2020 ◽  
pp. 185-190
Author(s):  
ERNEST NOGMA SOMBIÉ ◽  
NOUFOU OUÉDRAOGO ◽  
ADAMA HILOU
Keyword(s):  
Lipid Peroxidation ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Reducing Power ◽  
Ethanolic Extract ◽  
Calotropis Procera ◽  
Root Bark ◽  
Dpph Radical ◽  
Antioxidant Power ◽  
Anti Inflammatory

Objective: This study aimed to assess the anti-inflammatory and antioxidant properties in vitro of Calotropis procera root bark. Methods: Anti-inflammatory activities of the ethanolic extract of root bark of C. procera and its fractions were evaluated on lipoxygenase and xanthine oxidase (XO). Antioxidant activity was evaluated by trapping the 2,2-diphenylpicrylhydrazyl (DPPH) radical, hydrogen peroxide (H2O2), by the reducing power ferric reducing antioxidant power. Inhibitory powers of lipid peroxidation and of degradation of D-deoxyribose as well as the contents of phenolic and triterpene compounds were also evaluated. Results: Ethanolic extract showed interesting anti-inflammatory and antioxidant activities. Butanol fraction which is one of richest fractions for flavonoids (17.38±0.13 mg EQ/10 g extracts) showed the best percentages for inhibitions of XO (60.14±4.89%), degradation of D-deoxyribose (81.04±0.77%), and the DPPH radical (71.43±6.35%). Dichloromethane fraction which is the richest in triterpenes (1067.02±5.77 mg UAE/g extracts) showed the best percentages for inhibitions of lipoxygenase (56.45±1.15%) and of lipid peroxidation (82.45±0.73%). Ethyl acetate and residual aqueous fractions, respectively, showed the best activities of inhibiting H2O2 (75.38±0.76%) and for iron-reducing capacity (23.51±1.69 mg EAA/g extracts). Conclusion: Ethanolic extract from C. procera root bark and its fractions, their particular the butanol and dichloromethane one, has anti-inflammatory and antioxidant properties which could prevent or attenuate liver injury and its complications.

scholarly journals Comparative Study on Phytochemical Profile and Antioxidant Activity of an Epiphyte, Viscum album L. (White Berry Mistletoe), Derived from Different Host Trees

Plants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1191
Author(s):  
Mahak Majeed ◽  
Tanveer Bilal Pirzadah ◽  
Manzoor Ahmad Mir ◽  
Khalid Rehman Hakeem ◽  
Hesham F. Alharby ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Pearson Correlation ◽  
Juglans Regia ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Viscum Album ◽  
Total Phenol Content ◽  
Leaf Extracts ◽  
Antioxidant Power ◽  
Ferric Reducing Antioxidant Power

The study aimed at evaluating the antioxidant profile of a medicinal epiphyte Viscum album L. harvested from three tree species, namely, Populus ciliata L, Ulmus villosa L., and Juglans regia L. The crude extracts were obtained with ethanol, methanol, and water and were evaluated for the total phenol content (TPC), total flavonoid content (TFC), and antioxidant activities using total reducing power (TRP), ferric reducing antioxidant power (FRAP), 1, 1-diphenyl 1-2-picryl-hydrazyl (DPPH), superoxide radical scavenging (SOR), and hydroxyl radical scavenging (•OH) assays. Our results showed that crude leaf extracts of plants harvested from the host Juglans regia L. exhibited higher yields of phytochemical constituents and noticeable antioxidative properties. The ethanolic leaf samples reported the highest phenols (13.46 ± 0.87 mg/g), flavonoids (2.38 ± 0.04 mg/g), FRAP (500.63 ± 12.58 μM Fe II/g DW), and DPPH (87.26% ± 0.30 mg/mL). Moreover, the highest values for TRP (4.24 ± 0.26 μg/mL), SOR (89.79% ± 0.73 mg/mL), and OH (67.16% ± 1.15 mg/mL) were obtained from aqueous leaf extracts. Further, Pearson correlation was used for quantifying the relationship between TPC, TFC, and antioxidant (FRAP, DPPH, SOR, OH) activities in Viscum album L. compared to their hosts. It was revealed that the epiphyte showed variation with the type of host plant and extracting solvent.

scholarly journals Phytochemical Screening, Polyphenols Content, Antioxidant Power, and Antibacterial Activity of Herniaria hirsuta from Morocco

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Kenza Ammor ◽  
Dalila Bousta ◽  
Sanae Jennan ◽  
Bahia Bennani ◽  
Abdellah Chaqroune ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Antibacterial Activities ◽  
Diffusion Method ◽  
Antioxidant Power ◽  
Negative Effect ◽  
Hydroethanolic Extract

The aim of this study is to investigate in vitro antioxidant and antibacterial activities of the aqueous and hydroethanolic extracts for aerial parts of Herniaria hirsuta. Extracts were screened for their possible antioxidant activities by three tests: DPPH free radical-scavenging, reducing power, and molybdenum systems. The screening of antibacterial activity of extracts was individually evaluated against sixteen bacteria species using a disc diffusion method. Flavonoids, total phenols, and tannins content were performed for both extracts. It shows higher content in the hydroethanolic extract. The hydroethanolic extract showed a significant antioxidant activity for the three methods studies to the aqueous extract, but nonsignificant results compared to the reference (BHT). However, both extracts have negative effect on the strains studies for the antibacterial activity.

scholarly journals EVALUATION OF DEHYDRATED MUKIA MADERASPATANA LEAVES AS A POTENT SOURCE OF DIETARY ANTIOXIDANTS

2019 ◽  
Vol 7 (6) ◽  
pp. 27-36
Author(s):  
D. Amirtham ◽  
J. Aswini Nivedida ◽  
K. Dhivya ◽  
S. Ganapathy ◽  
C. Indurani
Keyword(s):  
Phenolic Content ◽  
Antioxidant Activities ◽  
Ethanolic Extract ◽  
Antioxidant Property ◽  
Leafy Vegetables ◽  
Total Phenolic ◽  
Green Leafy Vegetables ◽  
Total Antioxidant ◽  
Indigenous Plant

Green leafy vegetables are the most underexploited class of vegetables despite high nutritional value. The current study has been focused on the evaluation of anti-oxidant status of fresh and dehydrated under- utilized green leafy vegetable namely Mukia maderaspatana (L.) (Family: Cucurbitaceae), an indigenous plant; traditionally it is used as an ingredient of various cocktail preparations for the management of severe inflammatory disorders in Indian system of medicine. The total phenolic content (TPC), total flavonoid content (TFC) and total antioxidant activities were evaluated for the ethanolic extract of leaves to assess the in vitro antioxidant activities. The results showed that there exist a linear correlation between polyphenol content and antioxidant property. The ethanolic extract of dehydrated Mukia leaves showed the highest phenolic content (269.34 ± 0.78mg GAE/g), and total antioxidant activity (543±46 µmol Trolox/100 g). HPTLC analysis has revealed the presence of significant quantity of Quercitin (26.52%), an important flavonoid of tremendous antioxidant, anticancer and ant inflammatory properties in both the fresh and dehydrated leaves which might be the chief bioactive principle in Mukia.

Effect of solvent on antioxidant activity of Zanthoxylum oxyphyllum Edgew and its DFT study

2021 ◽  
Vol 17 ◽  
Author(s):  
Nilamoni Chelleng ◽  
Moushumi Hazarik ◽  
Amlan J Kalita ◽  
Ankur K Guha ◽  
Chandan Tamuly
Keyword(s):  
Antioxidant Activity ◽  
Free Radicals ◽  
Gallic Acid ◽  
Density Functional ◽  
Antioxidant Activities ◽  
Sinapic Acid ◽  
Reducing Power ◽  
Solvent System ◽  
Dft Study ◽  
Bioactive Molecule

Background: Free radicals can easily damage DNA, proteins, lipids within the tissue. Anti-oxidants from natural sources can diminish the actions of free radicals with no to very few adverse effects. The current study deals with the chemical composition and antioxidant activity from leaves of Zanthoxylum oxyphyllum Edgew. Methods: The antioxidant activities for DPPH, FRAP, ABTS radicals, phosphomolybdate assay, reducing power, and chelating power assay were evaluated in ethanol (ET), methanol (ME), chloroform (CH), ethyl acetate (EA), and petroleum ether (PE) extracts of the leaves. The Density Functional Theory (DFT) study was carried out on major phytochemicals to evaluate the most responsible bioactive molecule responsible for antioxidant activity. Results: It was observed that the ME extract showed the most potent scavenging activities in DPPH, FRAP, ABTS radicals, phosphomolybdate assay, reducing power, and chelating power assay. The phenolic acids and flavonoids like quercetin, gallic acid, sinapic acid, etc were identified. The DFT study was done for major phytochemicals of ME extract to evaluate the most responsible bioactive molecule for antioxidant activity. The Gallic acid has the lowest bond dissociation energy (BDE) 314.9 kcal/mol in gas, 309.2 kcal/mol in methanol respectively along with the highest value of radical stabilization energy (RSE) 29.5 kcal/mol. Conclusion: It revealed that gallic acid is the most responsible antioxidant among the other compounds and ME is the best solvent system for extraction followed by CH.

scholarly journals Antimicrobial and Antioxidant Activities of Different Extracts from Different Parts of Zilla spinosa (L.) Prantl

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Mohamed H. A. Suleiman ◽  
Ali A. Ateeg
Keyword(s):  
Traditional Medicine ◽  
Aerial Part ◽  
Antioxidant Activities ◽  
Shigella Flexneri ◽  
Reducing Power ◽  
Antimicrobial Activities ◽  
Total Phenolic ◽  
Frap Assay ◽  
Antioxidant Power ◽  
Agar Disc

Zilla spinosa is commonly used in traditional medicine to treat gastrointestinal disorders and diabetes. In this study, aqueous ethanol (AE) and aqueous methanol (AM) extracts from aerial parts and roots of Z. spinosa were investigated. The total phenolic (TPC) and flavonoid (TFC) contents and antioxidant capacities in terms of 1,1-diphenyl-2-picrylhydrazyl (DPPH) scavenging, hydrogen peroxide (H2O2), and ferric reducing antioxidant power (FRAP) assays were determined, and the correlations among the results were assessed using Pearson’s correlation. The antimicrobial activity was assessed through agar disc diffusion and broth microdilution assays. Phytochemical screening showed that Z. spinosa extracts had alkaloids, glycosides, saponins, triterpenoids, phenols, and flavonoids in different abundances. The aerial part-AE extract contained low TPC (30.17 ± 4.24 mg GAE/g) and TFC (7.40 ± 1.02 mg QE/g) and displayed significant antioxidant capacity in the DPPH (IC50 = 52.17 ± 7.30 μg/mL), H2O2 (91.22 ± 2.60 μg/mL), and FRAP (EC50 = 98.70 ± 2.21 μg/mL) assays. By contrast, the root-AM extract contained high amounts of TPC (87.72 ± 7.75 mg GAE/g) and TFC (25.60 ± 1.57 mg QE/g). It showed significantly high antioxidant activity with IC50 values of 12.33 ± 1.88 μg/mL in the DPPH and 39.37 ± 2.59 μg/mL in the H2O2 assays, as well as reducing power capacity with an EC50 value of 20.82 ± 1.14 μg/mL in the FRAP assay. Both TPC and TFC were exhibited negative correlations ( p < 0.01 ) with the IC50 and EC50 values obtained in the applied antioxidant assays. The aerial part-AM extract showed the highest inhibitory activity against Staphylococcus aureus (26.5 ± 0.20 mm), followed by Shigella flexneri (19.4 ± 0.40 mm) and Proteus mirabilis (17.7 ± 0.49 mm). S. aureus was the most affected microorganism with a minimum inhibitory concentration of 128 μg/mL against the aerial part-AM extract. Interestingly, all evaluated extracts showed potent antifungal activity against Candida albicans. However, aerial part-AM was the most effective, with an inhibition zone of 12.6 ± 0.17 mm. The results concluded that Z. spinosa possesses different phytochemicals displaying significant antioxidant and antimicrobial activities, thus lending credence to its use in traditional medicine.

scholarly journals Antioxidants from Tropical Herbs

2010 ◽  
Vol 5 (3) ◽  
pp. 1934578X1000500 ◽  
Author(s):  
Rasyidah Razab ◽  
Azlina Abdul Aziz
Keyword(s):  
Free Radicals ◽  
Antioxidant Capacity ◽  
Strong Correlation ◽  
Antioxidant Activities ◽  
Polyphenolic Compounds ◽  
Trolox Equivalent Antioxidant Capacity ◽  
Antioxidant Power ◽  
Polyphenolic Content ◽  
Trolox Equivalent ◽  
Ferric Reducing Antioxidant Power

Plants that contain high amounts of polyphenolic compounds are potential candidates for natural antioxidant sources. Studies are on going in the search for new sources of antioxidants. Not much data are available on the antioxidant capacity of tropical herbs. With this in mind, 19 commonly consumed Malaysian herbs were analyzed for their polyphenolic content and antioxidant activities. A majority of these plants have never been studied before with regards to their polyphenolic content and antioxidant activities. The shoots of Anacardium occidentale, the shoots and fruits of Barringtonia racemosa, Pithecellobium jiringa and Parkia speciosa had high polyphenolic contents (> 150 μg gallic acid equivalents/mg dried plant) and antioxidant activities when measured using the ferric reducing antioxidant power (FRAP) (>1.2 mM) and Trolox equivalent antioxidant capacity (TEAC) assays (>2.4 mM). A strong correlation was observed between the two antioxidant assays (FRAP vs TEAC) implying that the plants could both scavenge free radicals and reduce oxidants. There was also a strong correlation between the antioxidant activities and polyphenolic content suggesting the observed antioxidant activities were contributed mainly by the polyphenolics in the plants.

Antioxidant Properties of Ethanolic Extract from Ramulus mori (Sangzhi)

2009 ◽  
Vol 15 (5) ◽  
pp. 435-444 ◽  
Author(s):  
Zuofa Zhang ◽  
Jie Jin ◽  
Liangen Shi
Keyword(s):  
Antioxidant Activity ◽  
Superoxide Radical ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Reducing Power ◽  
Ethanolic Extract ◽  
Experimental Models ◽  
Hplc Method ◽  
Total Phenolic ◽  
Dependent Manner

The antioxidant properties and total phenolic contents of four fractions of ethanolic extract from Ramulus mori were examined. Various experimental models including superoxide radical, hydroxyl radical, 1,1-diphenyl-2-picrylhydrazyl radicals (DPPH) scavenging activity, metal chelating activity, and reducing power were used for characterization of their antioxidant activity. The four fractions showed various degrees of efficacy in each assay in a dose-dependent manner. The third fraction with the highest amount of total phenolics was the most potent antioxidant in all assays used. In addition, the most powerful compound (oxyresveratrol) was isolated and identified followed by on-line HPLC method and characterized by different spectral analysis. Oxyresveratrol exhibited impressive antioxidant activities in scavenging the superoxide radical, hydroxide radical, and DPPH. On the basis of the results obtained, Ramulus mori may serve as a potential source of natural antioxidant due to its significant antioxidant activity and oxyresveratrol may be the most powerful antioxidant in ethanolic extracts of Ramulus mori.

scholarly journals Comparison of Antiaging and Antioxidant Activities of Protocatechuic and Ferulic Acids

2020 ◽  
Vol 4 (2) ◽  
pp. 68 ◽  
Author(s):  
Ermi Girsang ◽  
I Nyoman Ehrich Lister ◽  
Chrismis Novalinda Ginting ◽  
Maulidwina Bethasari ◽  
Annisa Amalia ◽  
...  
Keyword(s):  
Free Radicals ◽  
Ferulic Acid ◽  
Protocatechuic Acid ◽  
Antioxidant Activities ◽  
Skin Aging ◽  
Inhibition Activity ◽  
Extrinsic Factors ◽  
Antioxidant Power ◽  
Ferric Reducing Antioxidant Power ◽  
Collagenase Inhibition

Background: Skin-aging is a progressive changes in the skin combine with cumulative extrinsic factors which are mostly caused by free radicals caused by exposure to lots of free radicals molecules from pollutant, wrongly food intake, or too much sun bathing. These free radicals can be tackled by a treatment using antioxidants. Prevention of aging can be done by escalating antioxidant intake. Protocatechuic acid (PCA) and Ferulic acid (FA) have been known for their scavenging properties on free radicals and antiaging activity. Antioxidant and antiaging activity of both compounds have not been compared comprehensively before. Hence, current study was conducted to compare the potential of PCA and FA for their antioxidant and antiaging activities using various methods.Materials and Methods: Antioxidant analysis of PCA and FA was conducted using H2O2 scavenging assay, 2,2’-azinobis-3-ethylbenzo-thiazoline-6-sulfonic acid (ABTS), 2,2-diphenyl-1-picrylhydrazil (DPPH), and ferric reducing antioxidant power (FRAP). Meanwhile, antiaging activities of PCA and FA were examined using inhibitory activities of tyrosinase, collagenase, elastase, hyaluronidase and tyrosinase.Results: IC50 of scavenging activity of ABTS were 125.18 µg/mL (PCA) and 35.55 µg/mL (FA), inhibition activity of collagenase were 126.16 µg/mL (PCA) and 52.85 µg/mL (FA) and inhibition activity of tyrosinase were 246.42 µg/mL (PCA), 253.58 µg/mL (FA).Conclusion: In conclusion, FA has better ABTS scavenging and collagenase inhibition activities compared to PCA. Meanwhile, PCA has better activity of tyrosinase inhibition than FA.Keywords: antioxidant, antiaging, ferulic acid, protocatechuic acid

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