Total Phenolic Contents and Free Radical Scavenging Activity of Different Parts of Jatropha Species

Akhtar, Parul; Yaakob, Zahira; Ahmed, Yunus; Shahinuzzaman, M.; Hyder, Mansoor

doi:10.14233/ajchem.2018.20980

Cited by 6 publications

(6 citation statements)

References 28 publications

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“…The oil demonstrated substantial antioxidant potential, as evidenced by its ability to scavenge DPPH radicals and exhibit reducing power comparable to the standard antioxidants, ascorbic acid. [9][10][11][12][13] The potential mechanisms of action underlying the relationship between antioxidant potential and essential oils are complex and multifaceted. Essential oils, derived from aromatic plants, have demonstrated significant antioxidant properties, and their effects can be attributed to various bioactive compounds present in these oils.…”

Section: Discussionmentioning

confidence: 99%

Unveiling the potent antioxidant capabilities of essential oil derived from Artemisia roxburghiana leaves: A comprehensive exploration

Parcha,

Rawat,

Kumar

et al. 2023

UJPAH

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Plants have potential due to their capability to synthesize an array of phytochemicals as secondary metabolites to defend themselves and respond on spot to a variety of environmental biotic or a biotic stresses. Such plants metabolites are used as drugs, medicines and also for many other industrial purposes including most attractive fragrances and nutraceuticals. Fragrance or flavour, the aroma behind is visualized by olfactory responses to the odorant molecules of different structures and forms. These molecules even with similar looking structures often express variation in quality of aroma because of electricity and stereocity Resultsing range of olfactive odors. De-stressing the world of its hectic lifestyles coupled with competitive ambience in all spheres is an area that aromaceuticals has occupied and thus has opened up a new horizon of aromatics research as well as commercial and industrial applications in near future taking lead in preventive healthcare scenario attracting global attention. Keeping in view of the above, the proposed study is aimed to carry out antioxidant potential form of essential oil from wild plant species namely Artemisia roxburghiana Wall. Ex Besser. Oil was extracted and studied for its physico-chemical characteristics and antioxidant potential.

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Section: Discussionmentioning

confidence: 99%

Unveiling the potent antioxidant capabilities of essential oil derived from Artemisia roxburghiana leaves: A comprehensive exploration

Parcha,

Rawat,

Kumar

et al. 2023

UJPAH

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“…It is dark purple in color and its reaction with an Leaves Seeds Stems Roots The method used is that of Akhtar and al. with some modifications [11].…”

Section: Determination Of Antioxidant Activity By the Dpph Methodsmentioning

confidence: 99%

Determination of Polyphenols and Flavonoids and Evaluation of Antioxidant Activity of Crude Extraction from the Leaves, Seeds, Stems and Roots of Cassia occidentalis

Ndior,

Diouf,

Diallo

et al. 2023

CSIJ

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In this article, we studied four organs of Cassia occidentalis namely leaves, seeds, stems and roots. Cassia occidentalis is a plant used in traditional Senegalese medicine to treat several pathologies including asthma, malaria, high blood pressure, bronchitis, anemia, stubborn stomach aches, etc. This study focuses on the determination of the antioxidant activity of these extracts. This study focuses on the determination of total polyphenols and flavonoids of different organ extracts (leaves, seeds, stems and roots) of Cassia occidentalis and the determination of the antioxidant activity of these extracts. Total polyphenols are assayed using the Folin-Ciocalteu reagent and total flavonoids using aluminum trichloride (AlCl3). The antioxidant activity of the extracts is evaluated by the DPPH method using TROLOX as reference antioxidant. The results of this study show that leaves and roots are the richest organs in polyphenols with contents ranging from 0.4941 ± 0.0633 mg EAG/g to 11.5114 ± 0.0791 mg EAG/g for leaves and 0.1235 ± 0.0220 mg EAG/g to 4.1968 ± 0.0481 mg EAG/g for roots. These same organs are richer in flavonoids with contents ranging from 1.6645 ± 0.0215 mg EQ/g to 7.2215 ± 0.1728 mg EQ/g for the leaves and 0.0813 ± 0.0022 mg EQ/ g to 3.4839 ± 0.0538 mg EQ/g for roots. These contents are higher in the methanolic and aqueous extracts. Total antioxidant capacities are significantly correlated with polyphenol and flavonoid contents. This is because the leaves and roots have more antioxidants that can react with the DPPH radical. This quantity is more noted in the methanolic extracts (14.1502 ± 0.3781 mg ETr/g for the leaves and 7.7042 ± 0.0619 mg ETr/g for the roots). Only the methanolic extracts show remarkable antiradical activities with IC50 values of 0.2409 ± 0.0006 mg/mL for the leaves and 0.1415 ± 0.0005 mg/mL for the roots. IC50 values for other extracts are not available, due to the low total antioxidant capacity. In short, the methanolic extracts of the roots and leaves therefore have an appreciable antioxidant power. This antioxidant power is more significant at the level of the methanolic root extract with the lowest IC50 value. This would justify the use of Cassia occidentalis in traditional Senegalese medicine to fight against several pathologies. This plant would therefore be a good source of natural antioxidants.

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“…Antioxidant capacities of compound (I) was measured according to Akhtar et al [42] with modifications. 3.8 mL of the methanol solution of DPPH• (40 mg/L) was added to test compound (200 μL) at different concentrations.…”

Section: Dpph Free Radical Scavengingmentioning

confidence: 99%

Syntheses and Antioxidant Activity of 1-Isonicotinoyl-4-phenylthiosemicarbazide and Crystal Structures of N-Phenyl-5-(pyridin-4-yl)-1,3,4-oxadiazol-2-amine Hydrochloride and 4-Phenyl-3-(pyridin-4-yl)-1H-1,2,4-triazole-5(4H)-thione derived from 1 Isonicotinoyl-4-phenylthiosemicarbazide

Faye

Mbow

Gaye

et al. 2022

EJCS

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The title compound C13H12N4OS (I) is synthetized from isonicotinic hydrazide and isothiocynate. Compounds C13H11N4OCl (II) and C13H10N4S (III) where obtained upon reaction of (I) with Fe(II) or Mn(II) salts. Compound (II) is heterocyclic 1,3,4-oxadiazole while compound (III) is heterocyclic 1,2,4-triazole. The 1,3,4-oxadiazol derivative is almost planar with dihedral angle of 2.66 (8) and 5.14 (8)° between 1,3,4-oxadiazole ring and phenyl and pyridinium rings respectively; the dihedral angle between the phenyl and pyridinium rings is 3.92 (8)°. The 1,2,4-triazole derivative is non-planar. The phenyl and pyridyl rings form dihedral angles of 58.35 (5) and 58.33 (5)°, respectively, with the 1,2,4-triazole ring; the dihedral angle between the phenyl and pyridyl rings is 36.85 (4)°. In the compound (II) intramolecular hydrogen bonds of type N—H···Cl, C—H···N and C—H···Cl resulting in S(6) ring stabilize the structure. Intermolecular hydrogen bonds of type N—H···N, C—H···N, C—4···Cl link the molecule thus forming a three-dimensional network. In the structure of compound (III), intermolecular hydrogen bonds of type N—H···N, C—H···N, C—H···S1,link the monomer in a three-dimensional network.

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Total Phenolic Contents and Free Radical Scavenging Activity of Different Parts of Jatropha Species

Cited by 6 publications

References 28 publications

Unveiling the potent antioxidant capabilities of essential oil derived from Artemisia roxburghiana leaves: A comprehensive exploration

Unveiling the potent antioxidant capabilities of essential oil derived from Artemisia roxburghiana leaves: A comprehensive exploration

Determination of Polyphenols and Flavonoids and Evaluation of Antioxidant Activity of Crude Extraction from the Leaves, Seeds, Stems and Roots of Cassia occidentalis

Syntheses and Antioxidant Activity of 1-Isonicotinoyl-4-phenylthiosemicarbazide and Crystal Structures of N-Phenyl-5-(pyridin-4-yl)-1,3,4-oxadiazol-2-amine Hydrochloride and 4-Phenyl-3-(pyridin-4-yl)-1H-1,2,4-triazole-5(4H)-thione derived from 1 Isonicotinoyl-4-phenylthiosemicarbazide

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