Phytochemical and Antioxidant Investigations of a Clausena Anisata Hook, a South African Medicinal Plant

Lawal, Ibraheem Oduola; Grierson, Don; Afolayan, A. J.

doi:10.21010/ajtcam.v12i1.5

Cited by 2 publications

(1 citation statement)

References 21 publications

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“…The high concentrations of flavonoids, proanthocyanidin. flavonols, and phenols acts as the biological substances that inhibit diseases and thus serves as defence mechanism in humans; this includes antimicrobial, antioxidants and cytotoxicity activities ( Harborne and Williams, 2000;Lawal et al, 2015). These compounds are also very essential because of their ability to scavenge their hydroxyl groups, quench free radicals and decompose peroxides (Adedapo et al, 2008).…”

Section: Phytochemical Analysismentioning

confidence: 99%

Phytochemical Constituents and Antioxidant Properties of Acetone Extract of Cleome Gynandra (L.) Growing in the Eastern Cape, South Africa.

Sowunmi

Afolayan

2015

Afr J Tradit Complement Altern Med

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Background: Several wild vegetables have been reported for their therapeutic benefits in South Africa. Many of these plants including Cleome gynandra (L.) lack scientific reports on its significance in folkloric medicine. Therefore, this study was undertaken to evaluate quantitatively the compositions of phytochemicals and antioxidant properties of acetone extract of different parts of C. gynandra. Materials and Method: Antioxidant activities were assessed against ferric reducing power, ABTS (2, 2’- azino-bis-3-ethyl benzothiazoline-6-sulfonic acid) diammonium salt, DPPH (1, 1- diphenyl-2-picrylhydrazyl) and NO (nitric oxide) radical scavenging activities. Total phenolics, flavonoids, flavanols, proanthocyanidins, tannins, saponins and alkaloids were also investigated. Results: Amongst the different plant parts, the leaf extract had the highest concentration of total phenolics (126.79 ± 0.55 mg/g), flavonoids (40.58 ± 0.06 mg/g) and flavanols (42.41 ± 0.05 mg/g) while the stem extract had the highest amount of proanthocyanidins (419.01 ± 0.67 mg/g) compared to the leaves (403.29 ± 0.89 mg/g) and fruits (107.18 ± 0.59 mg/g). The reducing power of the extracts was significantly higher than that of the standard drugs used in a concentration dependent manner. The activities of the plant extracts against ABTS, DPPH and NO radicals were dose responsive with IC50 value of 0.2, 0.1 and 0.03 mg/g respectively. Conclusion: C. gynandra possesses high secondary metabolites which accounts for its strong antioxidant ability thus justifying its use as natural occurring antioxidants in folkloric medicine. The study encourages a regular consumption of this wild vegetable in order to avert oxidative stress related diseases.

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Section: Phytochemical Analysismentioning

confidence: 99%

Phytochemical Constituents and Antioxidant Properties of Acetone Extract of Cleome Gynandra (L.) Growing in the Eastern Cape, South Africa.

Sowunmi

Afolayan

2015

Afr J Tradit Complement Altern Med

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Repellent and Insecticidal Efficacy of Leaf and Stem Powders of Mimosa diplotricha C. Wright ex Sauvalle (Mimosaceae) Against maize weevil, Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae).

Uyi¹,

Samugana²

2018

NJE

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Studies on the repellent and insecticidal potential of the invasive alien plant, Mimosa diplotricha C. Wright ex Sauvalle (Mimosaceae) (commonly known as the giant sensitive plant) are non-existent, hence this study evaluated the repellent and insecticidal activities of the leaf and stem powders of the against the maize weevil, Sitophilus zeamais (Motschulsky) (Coleoptera: Curculionidae) under laboratory conditions. Maize grains infested with the adults of S. zeamais were exposed to three concentrations viz. 1.5, 2.5 and 3.5 g of M. diplotricha leaf and stem powders for 3 hours after which percentage repellency was calculated. Also, adult weevils were exposed to grains treated separately with three different concentrations (1.5, 2.5 and 3.5 g) of the leaf and stem powders of M. diplotricha at different exposure periods. Percentage survival was recorded every 24 hours over a 120-hour period. The leaf and stem powders of M. diplotricha exhibited some degrees of repellency against S. zeamais, although, the repellent activity was a function of both concentration and exposure time. Following a 3-hour exposure period, the 3.5 g of the leaf (53%) and stem (58%) powders exhibited the highest repellent activity against S. zeamais. Although, the leaf and stem powders of M. diplotricha plants exhibited some degrees of mortality against S. zeamais, it was observed to be concentration and exposure time dependent. At the highest concentration (3.5 g), the leaf and stem powders of M. diplotricha accounted for only 28% mortality (72% survival) of S. zeamais after a 120-hour exposure period. This study reports the repellent and insecticidal activities of the leaf and stem powders of M. diplotricha against S. zeamais, for the first time, it however, suggests that the phytochemical constituents of the plant be analyzed first before further use.

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Phytochemical and Antioxidant Investigations of a Clausena Anisata Hook, a South African Medicinal Plant

Cited by 2 publications

References 21 publications

Phytochemical Constituents and Antioxidant Properties of Acetone Extract of Cleome Gynandra (L.) Growing in the Eastern Cape, South Africa.

Phytochemical Constituents and Antioxidant Properties of Acetone Extract of Cleome Gynandra (L.) Growing in the Eastern Cape, South Africa.

Repellent and Insecticidal Efficacy of Leaf and Stem Powders of Mimosa diplotricha C. Wright ex Sauvalle (Mimosaceae) Against maize weevil, Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae).

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