scholarly journals Etude phytochimique et activité antioxydante comparatives des trois variétés de Catharanthus roseus (L.) G. Don

2020 ◽  
Vol 14 (6) ◽  
pp. 2352-2361
Author(s):  
Hèzouwè Kagnou ◽  
Oudjaniyobi Simalou ◽  
Gneiny Whad Tchani ◽  
Sabrina Sanvee ◽  
Kokou Agbékonyi Agbodan ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Activity ◽  
Catharanthus Roseus ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Ethanol Extract ◽  
Phytochemical Screening ◽  
Phytochemical Study ◽  
Hybrid Variety

Catharanthus roseus (L.) G. Don, est une plante médicinale largement utilisée en tradithérapie contre le diabète, l’hypertension, le cancer et les effets du stress oxydatif. Elle existe en trois variétés ("rosea", "alba" et "hybride") selon la couleur des fleurs. L’étude actuelle porte sur le criblage phytochimique et l’activité antioxydante in vitro (DPPH et FRAP) de l’extrait hydro-éthanolique des trois variétés. Les tests ont été effectués sur les extraits des feuilles, fleurs et racines. On a noté la présence des alcaloïdes, phénols, flavonoïdes, tanins, saponines, stérols, terpènes et quinines. Cependant, l’absence des sucres réducteurs, des flavonoïdes et des saponines dans les racines ainsi que les quinines dans les feuilles a été relevée. L'analyse comparative par piégeage du radical DPPH a montré que les extraits des fleurs et racines de l’hybride étaient plus actifs, respectivement de 130,023±3,2 et 131,189±1,8 mg EqQ/g. Une tendance différente a été observée dans les extraits des feuilles où la meilleure valeur DPPH de 65,746±2,5 mg EqQ/g est attribuée à "rosea" alors que celle du FRAP de 139,935±2,57 mg EqAA/g provient de "alba". Ces résultats devraient encourager la poursuite des travaux sur l'identification et la caractérisation de nouveaux composés bioactifs sélectivement abondant pour une meilleure valorisation de Catharanthus roseus sur le plan de phytomédicaments.Mots clés : Catharanthus roseus, variétés, criblage phytochimique, antioxydant. English Title: Phytochemical study and comparative antioxidant activity of the three varieties of Catharanthus roseus (L.) G. DonCatharanthus roseus (L.) G. Don, is a medicinal plant widely used in the treatment of diabetes, hypertension, cancer, and effects of oxidative stress. C. roseus exists in three varieties ("rosea", "alba" and "hybrid") depending on the colour of the flowers. This study focused on phytochemical screening and in vitro antioxidant activity (DPPH and FRAP) of the hydro-ethanol extract of the three varieties. The tests were carried out on leaves, flowers, and roots extracts. The presence of alkaloids, phenols, flavonoids, tannins, saponins, sterols, terpenes, and quinines were noted. However, the absence of reducing sugars, flavonoids, and saponins in the roots and quinines in the leaves was observed. Comparative analysis of DPPH radical scavenging showed that extracts from the flowers and roots of the hybrid were more active, respectively at 130.023±3.2 and 131.189±1.8 mg EqQ/g. FRAP values of the same samples were 175.166± 9.28 and 121.311±7.8 mg EqAA/g dry matter. For the leaves, the best DPPH value of 65.746±2.5 mg EqQ/g was attributed to "rosea" while the FRAP value of 139.935±2.57 mg EqAA/g was for "alba". These interesting antioxidant activities of the "hybrid" variety may be useful against oxidative stress pathologies. The current study might then promote the continuing identification and characterization of new bioactive compounds for a development of Catharanthus roseus.Keywords: Catharanthus roseus, varieties, phytochemical screening, antioxidant.  

scholarly journals In vitro anti-inflammatory, antioxidant and qualitative phytochemical evaluation of the Phytexponent preparation of selected plants

2020 ◽  
Author(s):  
Gervason Moriasi ◽  
Elias Nelson ◽  
Epaphrodite Twahirwa
Keyword(s):  
Oxidative Stress ◽  
Protein Denaturation ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Scientific Data ◽  
Etiologic Factor ◽  
Phytochemical Screening ◽  
Anti Inflammatory

Abstract Oxidative stress is a critical etiologic factor and driver of inflammatory responses, witnessed in chronic and persistent conditions. The current anti-oxidative stress and anti-inflammatory drugs are associated with detrimental effects, high dependence, high costs, inaccessibility, among other drawbacks; therefore, a need for alternatives is imperative. Despite the remarkable potential of medicinal plants, there are scanty empirical studies on their pharmacologic efficacy. The Phytexponent is an alcoholic polyherbal preparation of Allium sativum, Triticum repens, Echinacea purpurea, Viola tricolor and Matricaria chamomilla. In complementary medicine, the Phytexponent is used to boost immunity, to treat inflammatory disorders, oxidative stress, blood pressure, diabetes, stress/depression, among other conditions. However, there is no sufficient scientific data to support these healing claims. Therefore, in the current study evaluated the in vitro anti-inflammatory, antioxidant activities and qualitative phytochemical composition of the Phytexponent. The in vitro anti-inflammatory activities were evaluated using the inhibition of protein denaturation and the human erythrocyte (HRBC) membrane stabilization techniques. Antioxidant activities were evaluated by the 1,1-diphenyl-picryl-1-hydrazyl (DPPH) radical scavenging-, the hydroxyl radical scavenging- and catalase activities. Qualitative phytochemical screening was performed using standard procedures. The results showed a significantly higher percentage inhibition of heat-induced- and hypotonicity induced HRBC hemolysis by the Phytexponent at concentrations of 50 % and 100 %, compared with the percentage inhibitions of etanercept (p<0.05). No significant differences in percentage inhibitions of protein denaturation were observed among concentrations of 12.5 %,25.0 %,50.0 %,100.0 % of the Phytexponent and etanercept (25 mg/ml) (p˃0.05). Furthermore, the Phytexponent demonstrated high antioxidant activities against the DPPH- (IC50=0.00733%) and the hydroxyl- (IC50 = 0.716 %) radicals in vitro.The Phytexponent recorded significantly higher catalase activities at concentrations of 1 % and 0.1 % than those recorded by ascorbic acid at similar concentrations. Qualitative phytochemical screening revealed the presence of phenols, flavonoids, tannins, among other antioxidant associated phytochemicals. The bioactivities of the Phytexponent reported herein, were attributed to the presence of these phytochemicals. Further studies to establish specific mode(s) through which the Phytexponent exerts in vitro anti-inflammatory and antioxidant effects are encouraged. Moreover, in vivo anti-inflammatory and antioxidant activities should be done to determine the replicability of these findings in vivo. Bioassay-guided isolation of compounds responsible for the reported bioactivities herein should be done.

scholarly journals Phytochemical Investigation and In Vitro Antioxidant Activities of Tetracarpidium conophorum (African Walnut) Seeds

2018 ◽  
Vol 6 (2) ◽  
pp. 56-61
Author(s):  
Kelly Oriakhi ◽  
Kissinger Orumwensodia ◽  
Patrick Uadia
Keyword(s):  
Nitric Oxide ◽  
Antioxidant Activity ◽  
Methanol Extract ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Phytochemical Screening ◽  
Dpph Radical ◽  
Dpph Radical Scavenging ◽  
Crude Methanol Extract

Background: Tetracarpidium conophorum (African walnut) is an African plant with ethnobotanical uses. Objectives: The purpose of this study was to evaluate the phytochemical screening and in vitro antioxidant activities of methanol extract and fractions (F) [n-hexane (HEX-F), dichloromethane (DCM-F) and, ethyl acetate (EA-F)] of T. conophorum seeds. Methods: Phytochemical screening and in vitro antioxidant activity study were carried out using DPPH, ABTs radical scavenging assays, nitric oxide inhibitory and reducing potential assays. Results: Methanol extract and its fractions contain phenols, flavonoids, saponins, tannins, terpenoids, and alkaloids. The concentrations of total phenols and flavonoids content were significantly higher in EA-F and crude methanol extract compared to other fractions. Crude methanol and EA-F contain higher concentrations of tannin while hexane fraction had the lowest tannin content but relatively higher proanthocyanidin content compared to other fractions. The antioxidant activity study showed that both methanol crude extract and fractions of T. conophorum seeds have significant activities for DPPH radical scavenging, reducing power, ferric reducing antioxidant potential, nitric oxide inhibitory activities, ABTS and hydroxyl radical scavenging for. DPPH radical scavenging activities of EA-F showed the lowest IC50 of 33.11 µg/mL, followed by Hex-F, DCM-F and crude methanol extract with IC50 of 33.43, 42.09 and 45.44 µg/mL, respectively, when compared to ascorbic acid with IC50 of 17.08 µg/mL. Conclusion: The study showed that T. conophorum seed is a rich source of secondary metabolites, which may be responsible for its antioxidant activities.

scholarly journals Phytochemical analysis, mineral composition and in vitro antioxidant activities of Solanum macrocarpon leaves

2016 ◽  
Vol 4 (1) ◽  
pp. 62
Author(s):  
Usunomena Usunobun ◽  
Igwe V. Chinwe
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Free Radical Scavenging ◽  
Phytochemical Screening ◽  
Mineral Analysis

Background: The aim of this study is to determine phytochemicals and mineral composition as well as in vitro antioxidant activities of Solanum macrocarpon leaves.Methods: Qualitative phytochemical screening was carried out using standard procedures while Mineral analysis was carried out using Atomic Absorption Spectrophotometer (AAS). Solanum macrocarpon leaves were also subjected for measurement of reducing power and antioxidant/radical scavenging activity (2,2-Diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging activity).Results: Phytochemical screening revealed the presence of flavonoids, saponins, alkaloids etc. Mineral analysis showed calcium (256.60mg/100g) to be higher in concentration and copper (0.62mg/100g) least in concentration while manganese was absent. Other minerals includes magnesium (81.69mg/100g), potassium (87.22mg/100g), sodium (32.51mg/100g), iron (31.41mg/100g), zinc (1.41mg/100g). Solanum macrocarpon leaves showed maximum antioxidant activity (DPPH free radical scavenging and reducing power capacity) as the higher the concentration, the higher the antioxidant activity, thus the better the free radical scavenging potentials.Conclusion: The data from this study revealed that Solanum macrocarpon has a rich content of phytochemicals, namely, saponins, alkaloids, flavonoids as well as minerals, bioactive components that are associated with health impacts. This study also revealed that Solanum macrocarpon leaves exhibit antioxidant activity. These findings thus suggest that Solanum macrocarpon leaves could act as potent source of antioxidants.

scholarly journals In vitro anti-inflammatory, antioxidant and qualitative phytochemical evaluation of the Phytexponent preparation of selected plants

2020 ◽  
Author(s):  
Gervason Moriasi ◽  
Elias Nelson ◽  
Epaphrodite Twahirwa
Keyword(s):  
Oxidative Stress ◽  
Protein Denaturation ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Scientific Data ◽  
Etiologic Factor ◽  
Phytochemical Screening ◽  
Anti Inflammatory

Abstract Oxidative stress is a critical etiologic factor and driver of inflammatory responses, witnessed in chronic and persistent conditions. The current anti-oxidative stress and anti-inflammatory drugs are associated with detrimental effects, high dependence, high costs, inaccessibility, among other drawbacks; therefore, a need for alternatives is imperative. Despite the remarkable potential of medicinal plants, there are scanty empirical studies on their pharmacologic efficacy. The Phytexponent is an alcoholic polyherbal preparation of Allium sativum, Triticum repens, Echinacea purpurea, Viola tricolor and Matricaria chamomilla. In complementary medicine, the Phytexponent is used to boost immunity, to treat inflammatory disorders, oxidative stress, blood pressure, diabetes, stress/depression, among other conditions. However, there is no sufficient scientific data to support these healing claims. Therefore, in the current study evaluated the in vitro anti-inflammatory, antioxidant activities and qualitative phytochemical composition of the Phytexponent. The in vitro anti-inflammatory activities were evaluated using the inhibition of protein denaturation and the human erythrocyte (HRBC) membrane stabilization techniques. Antioxidant activities were evaluated by the 1,1-diphenyl-picryl-1-hydrazyl (DPPH) radical scavenging-, the hydroxyl radical scavenging- and catalase activities. Qualitative phytochemical screening was performed using standard procedures. The results showed a significantly higher percentage inhibition of heat-induced- and hypotonicity induced HRBC hemolysis by the Phytexponent at concentrations of 50 % and 100 %, compared with the percentage inhibitions of etanercept (p<0.05). No significant differences in percentage inhibitions of protein denaturation were observed among concentrations of 12.5 %,25.0 %,50.0 %,100.0 % of the Phytexponent and etanercept (25 mg/ml) (p˃0.05). Furthermore, the Phytexponent demonstrated high antioxidant activities against the DPPH- (IC50=0.00733%) and the hydroxyl- (IC50 = 0.716 %) radicals in vitro.The Phytexponent recorded significantly higher catalase activities at concentrations of 1 % and 0.1 % than those recorded by ascorbic acid at similar concentrations. Qualitative phytochemical screening revealed the presence of phenols, flavonoids, tannins, among other antioxidant associated phytochemicals. The bioactivities of the Phytexponent reported herein, were attributed to the presence of these phytochemicals. Further studies to establish specific mode(s) through which the Phytexponent exerts in vitro anti-inflammatory and antioxidant effects are encouraged. Moreover, in vivo anti-inflammatory and antioxidant activities should be done to determine the replicability of these findings in vivo. Bioassay-guided isolation of compounds responsible for the reported bioactivities herein should be done.

scholarly journals Phytochemical screening and biological activities of pakoba (Syzygium luzonense) stem bark ethanol extract

2020 ◽  
Vol 21 (6) ◽  
Author(s):  
Mario Walean ◽  
ROSTINA MELPIN ◽  
MERVINA RONDONUWU ◽  
KINZIE FELICIANO PINONTOAN ◽  
Hendra Pratama Maliangkay ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Activity Index ◽  
Biological Activities ◽  
Radical Scavenging ◽  
Ethanol Extract ◽  
Stem Bark ◽  
Optimum Dose ◽  
Phytochemical Analysis ◽  
Phytochemical Screening

Abstract. Walean M, Melpin R, Rondonuwu M, Pinontoan KF, Maliangkay HP, Astriani M. 2020. Phytochemical screening and biological activities of pakoba (Syzygium luzonense) stem bark ethanol extract. Biodiversitas 21: 2377-2382. Pakoba (Syzygium luzonense (Merr.) Merr) as an endemic and ethnomedical plant of North Sulawesi was investigated for its phytochemical constituents and biological activities. The presence of phytochemicals constituents, antibacterial, antioxidant activities, and antihyperglycemic of pakoba stem bark ethanolic extract (PSBEE) were also investigated. Pakoba stem bark was extracted using ethanol. The extracts were evaluated for antimicrobial activity using the Kirby Bauer method, whereas antioxidant activity was determined by using 1,1-diphenyl-2-picrylhydrazyl radical scavenging assay. Alloxan-induced diabetic rats investigation was used to determine the antihyperglycemic activity. The phytochemical analysis revealed that tannins, alkaloids, and flavonoids were present in PSBEE. PSBEE has potent antioxidant activity with antioxidant activity index = 1.02. PSBEE significantly reduced the blood sugar of hyperglycemic rats with an optimum dose of 300 mg/kgbw. In this study, PSBEE has weak antibacterial activity against in Escherichia coli and Staphylococcus aureus.

UJI AKTIVITAS ANTIOKSIDAN FRAKSI N-HEKSAN DAUN AFRIKA (Vernonia amygdalina Del.) DENGAN METODE DPPH

2020 ◽  
Vol 5 (2) ◽  
pp. 250-257
Author(s):  
Nurul Fatimah ◽  
◽  
Reksi Sundu
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Activity ◽  
Free Radicals ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
Hexane Fraction ◽  
Phytochemical Screening ◽  
Vernonia Amygdalina ◽  
Tropical Africa ◽  
Ic50 Value

Free radicals and reactive species are widely believed to contribute to the development of several diseases by causing oxidative stress and eventually oxidative. Vernonia amygdalina (Astereacea) is a small shrub or tree between 1 and 5m high growing throughout tropical Africa. Plants are generally known as bitter leaves is well cultivated and is a general market for merchandise in several countries. The purpose of this study was to determine the antioxidant activity of hexane fraction from ethanol extract od Frican leaves (Vernonia amygdalina Del.). The method used in this study was the DPPH (1,1-Diphenil-2-Picrylhydrazyl) method. The result of phytochemical screening showed that ethanolic extract of African leaves contained a composition of secondary metabolites of alkaloids, flavonoids, tannins, steroids/triterpenoids and saponins. The antioxidant activity of the extract of n-hexane fraction was classified as very weak with an IC50 value of 317.98 ppm.

scholarly journals FRACTIONATION OF THE N-HEXANE EXTRACT OF GARCINIA BANCANA MIQ. (MANGGIS HUTAN) LEAVES AND ITS ANTIOXIDANT ACTIVITY BASED ON 1,1-DIPHENYL-2- PICRYLHYDRAZYL AND FERRIC REDUCING ANTIOXIDANT POWER ASSAYS

2018 ◽  
Vol 10 (1) ◽  
pp. 407
Author(s):  
Dewi Kumala Putri ◽  
Berna Elya ◽  
Nuraini Puspitasari
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Hexane Extract ◽  
Phytochemical Screening ◽  
Active Fraction ◽  
Leaf Extracts ◽  
Antioxidant Power ◽  
Dpph Method ◽  
Ferric Reducing Antioxidant Power

Objective: To assess the antioxidant activity from another part of the plant, in this study, leaf extracts in n-hexane were fractionated.Methods: Ten fractions were obtained and tested in vitro for antioxidant activity using two methods, 1,1-diphenyl-2-picrylhydrazyl (DPPH) and ferricreducing antioxidant power (FRAP), to identify the most active fraction.Results: The IC50 of the most active fraction was 36.24 μg/mL using the DPPH method, and the EC50 was 39.54 μg/mL using the FRAP method. Themost active fraction was also shown to contain terpenoids.Conclusion: The most active fraction of an n-hexane extract of the leaves of Gacinia bancana Miq., which was tested by both DPPH and FRAP methodshad antioxidant activities with IC50 and EC50 values of 36.2482 μg/mL and 39.5442 μg/mL, respectively. Phytochemical screening showed that activefraction contains terpenoids.

In Vitro Antioxidant Activity Metaplexis Japonica Makino Extract and Derivatives

2014 ◽  
Vol 955-959 ◽  
pp. 387-389 ◽  
Author(s):  
Bao Qing Wang
Keyword(s):  
Antioxidant Activity ◽  
Linoleic Acid ◽  
Ethyl Acetate ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Acid Test ◽  
Acetone Extracts ◽  
Β Carotene ◽  
Ethyl Acetate Extracts

Antioxidant activities of acetone and ethyl acetate extracts from Metaplexis japonica Makino, one of famous medicine plants in the eastnorth region of China, named luomo in Chinese, were examined by a DPPH (1,1-Diphenyl-2-picrylhydrazyl) radical-scavenging assay and a β-carotene-linoleic acid test. In DPPH, the antioxidant activity of the acetone extracts, ethyl acetate extracts and derivative were IC50 were 313.21, 266.92 and 118.78μg/mL, respectively. In the β-carotene-linoleic acid test, IC50 were 285.09, 351.57 and 123.89μg/mL. It was concluded that Metaplexis japonica Makino and its derivatives might be a potential natural source of antioxidants .

ASSESSMENT OF PHYTOCHEMICALS, TOTAL PHENOL, FLAVONOID CONTENT AND IN VITRO ANTIOXIDANT PROPERTY OF LARGE CARDAMOM EXTRACTS

INDIAN DRUGS ◽  
2021 ◽  
Vol 58 (10) ◽  
pp. 34-41
Author(s):  
Kanthlal S. K. ◽  
Jipnomon Joseph ◽  
Bindhu P. Paul ◽  
Vijayakumar M ◽  
Rema Shree A. B. ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Antioxidant Property ◽  
Bioactive Constituents ◽  
Preliminary Assessment ◽  
Reducing Power Assay ◽  
Large Cardamom

Amomum subulatum, commonly known as large or black cardamom, is a commonly used spice in Indian kitchens and is traditionally used to treat various ailments. To add more knowledge about the medicinal values of the fruit, this study was conducted to evaluate the in vitro antioxidant activities of aqueous, methanol, ethanol, hydro alcohol, ethyl acetate, acetone and chloroform extracts of the fruit. Preliminary assessment was done to detect the presence of phytoconstituents using identification tests. The antioxidant activity was measured by employing methods such as diphenylpicrylhydrazyl (DPPH) radical scavenging assay, total antioxidant activity equivalent to ascorbic acid, reducing power assay and superoxide anion scavenging assay. The antioxidant activities were compared with their respective phenol and flavonoid contents. Preliminary assessment revealed that large cardamom fruit is a good source of all the bioactive constituents as well as phenol and flavonoid essential for medicinal values. The extract obtained by polar solvents showed the highest antioxidant efficacy in relation to its phenol content. Also, all the solvent-soluble fractions showed a concentration-dependent antioxidant effect. Results from our study prove that large cardamom can alleviate oxidative stress, suggesting the potential of large cardamom as a functional food

scholarly journals Phytochemical screening and In-vitro antioxidant activity of Centella asiatica extracts

2017 ◽  
Vol 9 (4) ◽  
pp. 615
Author(s):  
Mukesh Kumar Yadav ◽  
Santosh Kumar Singh ◽  
JS Tripathi ◽  
YB Tripathi
Keyword(s):  
Hydrogen Peroxide ◽  
Antioxidant Activity ◽  
Free Radical ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Centella Asiatica ◽  
Free Radical Scavenging ◽  
Scavenging Activity ◽  
Phytochemical Screening

<p><em>Centella asiatica</em> also known as <em>mandukparni </em>or Indian pennywort or <em>jalbrahmi</em>, which has been used as a medicine in the Ayurveda from ancient times and mentioned in many classical texts of Ayurveda. <em>Centella asiatica</em> has long been used to improve memory and cognitive function.</p><p>The study aimed to identify the phytochemicals present in different solvent extracts of <em>Centella asiatica </em>(i.e. PECA- Petroleum ether extract of <em>C. asiatica, </em>CCA- Chloroform extract of <em>C. asiatica, </em>EACA- Ethyl acetate extract of <em>C. asiatica,</em> ECA- Ethanolic extract of <em>C. asiatica, </em>HACA- Hydro-alcoholic extract of <em>C. asiatica</em>)<em> </em>and evaluate the respective in-vitro antioxidant potentials. <em></em></p><p>The phytochemical screening of extracts was done with standardized procedures and the antioxidant potential of different solvent extracts of <em>Centella asiatica</em> was assessed by its free radical scavenging activity 2, 2-diphenyl -1- picrylhydrazyl (DPPH) as well as hydrogen peroxide scavenging assay respectively for reducing capability.</p><p>In all different solvent extracts of <em>C. asiatica</em> revealed excellent free radical scavenging activity as revealed by 2-2- diphenyl-1-picryl-hydrazyl (DPPH) assay with  EC<sub>50</sub> values for ECA=128.752±1.85 μg/ml, HACA=274.884±1.21 μg/ml and hydrogen peroxide assay against the standard (Butylated hydroxytoluene) BHT, with the EC<sub>50</sub> values ECA=429.69±0.92 μg/ml HACA=458.08±0.58 μg/ml while rest solvent extracts shown very less antioxidant activity.</p><p> The present study indicates that the <em>Centella asiatica</em> extracts have good antioxidant activity which can be used in stress and anxiety and also a good source to be used as natural drugs.</p>

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