PHYTOCHEMICAL CONSTITUENTS AND ANTIOXIDANT ACTIVITY OF THESEEDS OFCUCUMEROPSIS EDULIS(CUCURBITACEAE) FROM MOMO IN GABON

2021 ◽  
Vol 9 (03) ◽  
pp. 827-831
Author(s):  
Mefouet Abessolo D.D ◽  
◽  
Abogo Mebale A.J ◽  
Nsi Akue G. ◽  
Allogho Mve J. ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Aqueous Extract ◽  
Methanolic Extract ◽  
Phytochemical Constituents

This paper describes results of phytochemical analyses and antioxidant activity of the seeds ofCucumeropsis edulis. For phytochemical analyses, extraction was performed with the same powder using different solvents: Acetone the first, ethyl acetate the second and methanol the last. Aqueous extract was used for evaluation of antioxidant activity. The results obtained show the abundance of polyphenols, gallic tannins and alkaloids in all extracts. Reducing compounds are present in ethyl acetate and acetonic extracts and leucoanthocyans are present in methanolic extract only. The results (IC50 = 2249± 87,03 µg/mL AAI = 0,022 ± 0,001) of evaluation of antioxidant activity are very low.

Verbascum sinaiticum: A Rich Source of Antioxidant Phenylethanoid Glycosides

2020 ◽  
Vol 10 (2) ◽  
pp. 158-162 ◽  
Author(s):  
Humaira Yasmeen Gondal ◽  
Roshan Zamir ◽  
Muhammad Nisar ◽  
Muhammad Iqbal Choudhary
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Aerial Part ◽  
Methanolic Extract ◽  
Water Soluble ◽  
Antioxidant Potential ◽  
Active Fraction ◽  
Phenylethanoid Glycosides ◽  
Active Constituents ◽  
Soluble Part

Background: The genus Verbascum is well documented for its antioxidant potential but Verbascum sinaiticum is comparatively less studied plant. The current study was carried out to search for antioxidant nutraceuticals from this species. Objective: To explore the antioxidant potential of Verbascum sinaiticum and to identify its active constituents. Methods: The methanolic extract of air-dried aerial part of the Verbascum sinaiticum was partitioned with hexane, chloroform and ethyl acetate. The water-soluble part of ethyl acetate afforded six phenylethanoid glycosides by repeated chromatography over Sephadex LH-20, silica gel and ODS columns. Antioxidant activity of solvent extracts and isolated constituents were evaluated by DPPH, ABTS and FRAP assays. Results: Six phenylethanoid glycosides was isolated and characterized as Verbascoside, Eukovoside, Martynoside, Jionoside D, Campneoside I and Campneoside II, from the most active fraction. Conclusion: Verbascum sinaiticum demonstrated prospective antioxidant activity. The watersoluble part of EtOAc (WSEAE) was found the most active extract whereas Verbascoside was identified as the most potent constituent. All isolated compounds exhibited significant antioxidant activity whereas their synergistic effect was found prominent in the parent fraction.

scholarly journals IN VITRO STUDY OF ANTI-INFLAMMATORY AND ANTIOXIDANT ACTIVITY OF SOME MEDICINAL PLANTS AND THEIR INTERRELATIONSHIP

2018 ◽  
Vol 11 (4) ◽  
pp. 195 ◽  
Author(s):  
Shubhi Rastogi ◽  
Mohammed Shariq Iqbal ◽  
Deepak Ohri
Keyword(s):  
Antioxidant Activity ◽  
Medicinal Plants ◽  
Aqueous Extract ◽  
Cannabis Sativa ◽  
Methanolic Extract ◽  
In Vitro Study ◽  
Strong Positive Correlation ◽  
Total Antioxidant ◽  
Anti Inflammatory

 Objective: The objective of the present work is to study the in vitro anti-inflammatory and antioxidant activity of medicinal plants. The extent and correlation between anti-inflammatory and antioxidant activity have been studied.Method: Methanolic and aqueous extracts of five medicinal plants, namely, Ficus racemosa, Aloe vera, Cannabis sativa, Datura stramonium, and Calotropis gigantean have been taken for in vitro anti-inflammatory and total antioxidant activity.Result: The study showed that the inhibition of protein (albumin) denaturation was maximum in aqueous extract of A. vera with 97.55±1.45%. Proteinase inhibitory action of different plant extracts showed significant action and was found to be maximum in aqueous extract of D. stramonium with 87.89±2.58%. Heat-induced hemolysis showed that maximum inhibition was with aqueous extract of F. racemosa with 90.72±3.33%. When hypotonicity-induced hemolysis activity was done it was found maximum in methanolic extract of C. gigantea with 90.58±3.04%. Anti-lipoxygenase activity was found maximum in methanolic extract of F. racemosa with 94.05±4.24%. When total antioxidant activity was done, it was found highest in F. racemosa (4.38±0.546 mM equivalent of ascorbic acid/g tissue).Conclusion: An overall strong positive correlation between anti-inflammatory and antioxidant activity was observed, indicating that antioxidant activity of the plant species studied might be responsible for their anti-inflammatory property. Further work needs to be undertaken to fully elucidate the antioxidants responsible for anti-inflammatory action and to develop better herbal drug formulations.

Evaluation of Cytotoxic Compounds from Calligonum comosum L. Growing in Egypt

2007 ◽  
Vol 62 (9-10) ◽  
pp. 656-660 ◽  
Author(s):  
Farid A. Badria ◽  
Madiha Ameen ◽  
Mohamed R. Akl
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Brine Shrimp ◽  
Methylene Chloride ◽  
Methanolic Extract ◽  
Ethyl Acetate Fraction ◽  
Desert Plant ◽  
Ehrlich Ascites ◽  
Cytotoxic Compounds ◽  
Egyptian Desert

Calligonum comosum (Polygonaceae), an Egyptian desert plant, was extracted and fractionated using petroleum ether, methylene chloride, and ethyl acetate. The total methanolic extract and other fractions were tested for their anticancer activity using Ehrlich ascites, brine shrimp and antioxidant assays. Ethyl acetate fraction proved to be the most active in all assays. Eight compounds were isolated, purified, and identified from this fraction as (+)- catechin (1), dehydrodicatechin A (2), kaempferol-3-O-rhamnopyranoside (3), quercitrin (quercetin-3-O-rhamnopyranoside) (4), β-sitosterol-3-O-glucoside (5), isoquercitrin (quercetin- 3-O-glucopyranoside) (6), kaempferol-3-O-glucuronide (7), and mequilianin (quercetin-3- O-glucuronide) (8). All isolated compounds were tested for their cytotoxicity and antioxidant activity. Compound 2 showed the best cytotoxic and antioxidant activity.

scholarly journals Determination of Antioxidant Activity and Phenolic Compounds of Methanolic Extract of Java Plum (Syzygium cumini Linn. (Skeel) Seed

2017 ◽  
Vol 14 (1) ◽  
pp. 9 ◽  
Author(s):  
Rohadi Rohadi ◽  
Umar Santoso ◽  
Sri Raharjo ◽  
Iip Izul Falah
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Methanolic Extract ◽  
Radical Scavenging ◽  
Ethyl Acetate Fraction ◽  
Polar Fraction ◽  
Acid Oxidation ◽  
Syzygium Cumini ◽  
Compound Identification ◽  
Antioxidant Power

Methanolic extract of Java Plum (Syzygium cumini L. (Skeel) seed (MEJS) is potential source of natural antioxidant. As indicated by several in vitro measurements, the extract had strong DPPH (1,1 diphenyl, 2–picryl hydrazyl) and ABTS (2,2-azinobis, 3-ethylbenzothiazoline-6-sulphonate) radical scavenging activity, strong Ferric Reducing Antioxidant Power (FRAP) and moderate inhibition activity of linoleic acid oxidation. This study aimed to determine antioxidant activity and phenolic compound of Java Plum seed (Syzygium cumini L. (Skeel) methanolic extract fractions. Phenolics compound identification using Thin Layer Chromatography (TLC) showed that all fractions (polar, semi polar and hydrolyzed semi polar fraction) contained Gallic acid, Tannic acid and flavonol’s Rutin. HPLC-DAD analysis showed that its polar fraction contained 25 ppm flavonol’s Quercetine and 55181 ppm flavonol’s (+)- Catechin, ethyl acetate fraction contained 54 ppm flavonol’s Rutin and 528 ppm (+)- Catechine, while hydrolyzed ethyl acetate fraction contained 404 ppm Rutin and 28692 ppm (+)- Catechine.

scholarly journals Study on the Chemical Composition, Enzyme Inhibition and Antioxidant Activity of Ziziphora taurica subsp. cleonioides

2019 ◽  
Vol 9 (24) ◽  
pp. 5515 ◽  
Author(s):  
Cengiz Sarikurkcu ◽  
Eleni Kakouri ◽  
Rifat Tayyib Sarikurkcu ◽  
Petros A. Tarantilis
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Enzyme Inhibition ◽  
Methanolic Extract ◽  
Skin Pigmentation ◽  
Extraction Process ◽  
Total Phenolic ◽  
Chemical Profile ◽  
Flavonoid Content ◽  
And Oxidative Stress

Ziziphora is a plant used in Turkish and Iran traditional medicine for its antibacterial activity, sedative and stomach soothing properties. Although the chemical profile of the essential oil of different Ziziphora species is well documented, data regarding plant extracts are incomplete. In this study extracts from Ziziphora taurica subsp. cleonioides were obtained using ethyl acetate, methanol and water and the chemical profile of the aerial part of the plant was elucidated. Among the compounds identified, rosmarinic acid was the most abundant (3375.67 ± 38.02 μg/mL), at the extract of methanol, followed by chlorogenic acid (3225.10 ± 16.44). Enzyme inhibition activity against α-amylase and tyrosinase was also estimated. The ethyl acetate extract showed the highest α-amylase activity (1.95 ± 0.04 mg/mL), while the best anti-tyrosinase activity was calculated for the methanolic extract (1.25 ± 0.01 mg/mL). In addition, total phenolic, flavonoid content and antioxidant activity were evaluated. According to our results, bioactivity of the plant is of great interest, nonetheless, at the same time, it is strongly depended on the solvent used during the extraction process. Our data suggest that the plant under study may be an important source to consider against metabolic, skin pigmentation and oxidative stress related disorders.

scholarly journals ANTIPROLIFERATIVE AND ANTIOXIDANT ACTIVITY OF LEAVES EXTRACTS OF MORINGA OLEIFERA

2016 ◽  
Vol 8 (4) ◽  
pp. 54 ◽  
Author(s):  
Burli Sanganna ◽  
Havagiray R. Chitme ◽  
Khanvilkar Vrunda ◽  
Mohsin J. Jamadar
Keyword(s):  
Antioxidant Activity ◽  
Growth Inhibition ◽  
Cell Line ◽  
Aqueous Extract ◽  
Moringa Oleifera ◽  
Ethanolic Extract ◽  
Colon Cell ◽  
Colon Cell Line ◽  
Phytochemical Constituents ◽  
Ht 29

Objective: The aim of the study was to investigate the ethanolic and aqueous extract of leaves of Moringa oleifera for phytochemical constituents, antiproliferative and antioxidant activity.Methods: The ethanolic extract of leaves of Moringa oleifera, belonging to the family Moringaceae was prepared by using soxhlet apparatus and aqueous extract was prepared by using maceration process. The extract was evaluated for its phytochemical constituents. The antiproliferative effects of both extracts were checked by using MTT ([3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide]) assay on HT-29 colon cell line and the antioxidant activity were checked by using DPPH (2,2-diphenyl-1-picrylhydrazyl) assay. In antiproliferative and antioxidant activity the 5-FU (5-fluro uracil) and Ascorbic acid used as a standard drug for present results conclusion respectively.Results: The results obtained in MTT assay shown that ethanolic extract of Moringa oleifera had a more potent antiproliferative effect (growth inhibition of 62.25% at 100 μg/ml) on HT-29 colon cell line as compared to aqueous extract (% growth inhibition of 27.86 at 100 μg/ml) of Moringa oleifera. The ethanolic extract of Moringa oleifera shown more potent antioxidant activity (% inhibition of ethanolic 75.57 at 100 μg/ml) than aqueous extract (38.16 at 100 μg/ml) of Moringa oleifera. The activity shown by the extract is concentration dependent.Conclusion: In the present study we have investigated that the effect of ethanolic and aqueous leaves extracts of Moringa oleifera possess antiproliferative and antioxidant properties.

scholarly journals Semipurified Ethyl Acetate Partition of Methanolic Extract ofMelastoma malabathricumLeaves Exerts Gastroprotective Activity Partly via Its Antioxidant-Antisecretory-Anti-Inflammatory Action and Synergistic Action of Several Flavonoid-Based Compounds

2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
Noor Wahida Ismail Suhaimy ◽  
Ahmad Khusairi Noor Azmi ◽  
Norhafizah Mohtarrudin ◽  
Maizatul Hasyima Omar ◽  
Siti Farah Md. Tohid ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Methanolic Extract ◽  
Antioxidant Activities ◽  
Gastric Wall ◽  
Synergistic Action ◽  
Gastroprotective Activity ◽  
Gastric Mucus ◽  
Anti Inflammatory

Recent study has demonstrated the gastroprotective activity of crude methanolic extract ofM. malabathricumleaves. The present study evaluated the gastroprotective potential of semipurified extracts (partitions): petroleum ether, ethyl acetate (EAMM), and aqueous obtained from the methanolic extract followed by the elucidation of the gastroprotective mechanisms of the most effective partition. Using the ethanol-induced gastric ulcer assay, all partitions exerted significant gastroprotection, with EAMM being the most effective partition. EAMM significantly (i) reduced the volume and acidity (free and total) while increasing the pH of gastric juice and enhanced the gastric wall mucus secretion when assessed using the pylorus ligation assay, (ii) increased the enzymatic and nonenzymatic antioxidant activity of the stomach tissue, (iii) lost its gastroprotective activity following pretreatment with N-omega-nitro-L-arginine methyl ester (L-NAME; NO blocker) or carbenoxolone (CBXN; NP-SH blocker), (iv) exerted antioxidant activity against various in vitro oxidation assays, and (v) showed moderate in vitro anti-inflammatory activity via the LOX-modulated pathway. In conclusion, EAMM exerts a remarkable NO/NP-SH-dependent gastroprotective effect that is attributed to its antisecretory and antioxidant activities, ability to stimulate the gastric mucus production and endogenous antioxidant system, and synergistic action of several gastroprotective-induced flavonoids.

scholarly journals LC-ESI-QTOF-MS/MS Analysis, Cytotoxic, Antiviral, Antioxidant and Enzyme Inhibitory Properties of Four Extracts of Geranium pyrenaicum Burm. f.: A Good Gift from the Natural Treasure

2021 ◽  
Vol 22 (14) ◽  
pp. 7621
Author(s):  
Łukasz Świątek ◽  
Elwira Sieniawska ◽  
Kouadio Ibrahime Sinan ◽  
Magdalena Maciejewska-Turska ◽  
Anastazja Boguszewska ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Antioxidant Capacity ◽  
Gallic Acid ◽  
Aqueous Extract ◽  
Methanolic Extract ◽  
Biological Evaluation ◽  
Scientific Data ◽  
Antioxidant Power ◽  
Trolox Equivalent ◽  
Hsv 1

This study focused on the biological evaluation and chemical characterization of Geranium pyrenaicum Burm. f. Different solvent extracts (hexane, ethyl acetate, methanol, and water extracts) were prepared. The phytochemical profile, antioxidant, and enzyme inhibitory activity were investigated. Cytotoxicity was assessed using VERO, FaDu, HeLa and RKO cells. The antiviral activity was carried out against HSV-1 (Herpes simplex virus 1) propagated in VERO cell line. The aqueous extract, possessing high phenolic content (170.50 mg gallic acid equivalent/g extract), showed the highest reducing capacity (613.27 and 364.10 mg Trolox equivalent/g extract, for cupric reducing antioxidant capacity and ferric reducing antioxidant power, respectively), radical scavenging potential (469.82 mg Trolox equivalent/g extract, against 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)), metal chelating ability (52.39 mg ethylenediaminetetraacetic acid equivalent/g extract) and total antioxidant capacity (3.15 mmol Trolox equivalent/g extract). Liquid chromatography-electrospray ionization-quadrupole time-of-flight-mass spectrometry (LC-ESI-QTOF-MS/MS) alloved to tentatively identify a total of 56 compounds in the extracts, including ellagitannins, gallic acid and galloyl derivatives amongst others. The ethyl acetate extracts substantially depressed cholinesterase enzymes (4.49 and 12.26 mg galantamine equivalent/g extract against AChE and BChE, respectively) and α-amylase enzyme (1.04 mmol acarbose equivalent/g extract). On the other hand, the methanolic extract inhibited tyrosinase (121.42 mg kojic acid equivalent/g extract) and α-glucosidase (2.39 mmol acarbose equivalent/g extract) activities. The highest selectivity towards all cancer cell lines (SI 4.5–10.8) was observed with aqueous extract with the FaDu cells being the most sensitive (CC50 40.22 µg/mL). It can be concluded that the presence of certain bioactive antiviral molecules may be related to the high anti HSV-1 activity of the methanolic extract. This work has generated vital scientific data on this medicinal plant, which is a prospective candidate for the creation of innovative phyto-pharmaceuticals.

scholarly journals Phytochemical Analysis and Comprehensive Evaluation of Pharmacological Activities, Isolation and Characterization of Bioactive Compound from the Bark of Sterculia urens Roxb.

2021 ◽  
Vol 33 (8) ◽  
pp. 1950-1956
Author(s):  
Chaitanya Darapureddy ◽  
K.R.S. Prasad ◽  
Phani R.S. Ch
Keyword(s):  
Ethyl Acetate ◽  
Methanolic Extract ◽  
Radical Scavenging ◽  
Clot Lysis ◽  
Preparative Hplc ◽  
Inhibition Activity ◽  
Pharmacological Activities ◽  
Sterculia Urens ◽  
Phytochemical Constituents

The objective of the present study is to investigate the phytochemical constituents by qualitative and quantitative analysis, pharmacological activities such as antioxidant, antidiabetic, anti-inflammatory, thrombolytic and antibacterial activities of different crude extracts from bark of Sterculia urens Roxb. Further, the preparative HPLC isolation and spectroscopic characterization of the bioactive phytochemical constituents were also carried out. Different solvents such as n-hexane, ethyl acetate, methanol and water were used to prepare the crude extracts from the bark using Soxhlet extraction apparatus. DPPH free radical scavenging assay (antioxidant), α-amylase inhibition assay (antidiabetic), albumin denaturation assay (anti-inflammatory), blood clot lysis method (thrombolytic) and well-diffusion method (antibacterial) were performed for the determination of pharmacological activities of the bark extracts. The preparative HPLC analysis was carried for the separation and purification of bioactive compounds and the identification of isolated compounds was carried using 1H NMR, 13C NMR and mass spectroscopy. The quantitative estimation studies confirmed that methanolic extract contains 7.75 ± 0.141 GAE/g of phenolic compounds, 10.47 ± 0.033 mg of QE/g of flavonoids and 8.70 ± 0.047 mg/g of terpenoids. The ethyl acetate extract contains 2.16 ± 0.126 GAE/g of phenolic compounds whereas the aqueous extract contains 16.53 ± 0.055 mg/g of saponins. High DPPH radical scavenging was observed for methanolic extract with IC50 concentration of 85.38 ± 0.213 μg/mL. The α-amylase inhibition activity with IC50 concentrations of 145.67 ± 1.87, 98.36 ± 0.47 and 194.47 ± 0.55 μg/mL for ethyl acetate, methanol and aqueous extracts respectively. The albumin denaturation inhibition activity was found to be very high for methanolic extract with IC50 values of 132.08 ± 0.13 μg/mL which is near to the standard (107.13 ± 0.13 μg/mL). The % clot lysis of the methanolic extract in thrombolytic activity was found to be similar to the 100 μL of streptokinase (62.36 ± 0.140 %). Two terpenoids (One known terpenoid mansonone G and one new terpenoid) were isolated from the methanolic extract using preparative HPLC separation. Three known flavonoids (farrerol, apigenin and 6-hydroxyluteolin) and one new flavonoid were also isolated from the methanolic extract. The results suggested that bark extracts of Sterculia urens Roxb. having rich phytochemical constituents with high pharmacological activities.

scholarly journals Chemical Composition, Phytochemical Screening and Antioxidant Activity of Acmella uliginosa (Sw.) Cass Leaves

2018 ◽  
Vol 16 (2) ◽  
pp. 162
Author(s):  
Askal Maimulyanti ◽  
Anton Restu Prihadi ◽  
Iwan Safrudin
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Methanol Extract ◽  
Ethyl Acetate Extract ◽  
Radical Scavenging ◽  
Hexane Extract ◽  
Gas Chromatography Mass Spectrometry ◽  
Percentage Yield ◽  
Phytochemical Constituents ◽  
Free Radical Scavenging Assay

Acmella uliginosa (Sw.) Cass is widely used in traditional medicine and used in the treatment of many diseases. Extraction of component in leaves of Acmella uliginosa used methanol, ethyl acetate and n-hexane solvent. The percentage yield of extract from the leaves in methanol, ethyl acetate and n-hexane were 6.50, 0.49, and 0.66, respectively. Analysis of component in various extracts of Acmella uliginosa (Sw.) Cass leaves used Gas Chromatography-Mass Spectrometry (GC-MS). The various classes of phytochemicals were identified from fractions of methanolic leaves extract by GC-MS. Qualitative analysis of phytochemical constituents in methanol, ethyl acetate and n-hexane extract were tannins, flavonoids, saponin, alkaloid and steroid. Antioxidant activity of Acmella uliginosa leaves from Indonesia was carried out by using 1,1,diphenyl-2-picryl-hydrazine (DPPH) free radical scavenging assay. The IC50 of three extract was calculated. A comparative study determined that Acmella uliginosa in ethyl acetate extract showed the highest antioxidant potential (IC50 = 28.09 µg/mL) compared to methanol extract (IC50 = 44.31 µg/mL) and n-hexane extract (181.23 µg/mL) against DPPH free radicals.

Sign in / Sign up

Export Citation Format

Share Document