scholarly journals Phytochemical Analysis and Free Radical Scavenging Activity of Medicinal Plants Gnidia glauca and Dioscorea bulbifera

PLoS ONE ◽  
2013 ◽  
Vol 8 (12) ◽  
pp. e82529 ◽  
Author(s):  
Sougata Ghosh ◽  
Abhishek Derle ◽  
Mehul Ahire ◽  
Piyush More ◽  
Soham Jagtap ◽  
...  
Keyword(s):  
Free Radical ◽  
Medicinal Plants ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Free Radical Scavenging Activity ◽  
Phytochemical Analysis ◽  
Scavenging Activity ◽  
Dioscorea Bulbifera

The Assessment of the Free Radical Scavenging Activity and Flavonoid Contents of Selected Medicinal Plants of Mizoram

2020 ◽  
Vol 15 (1) ◽  
pp. 34-43
Author(s):  
Alex Zohmachhuana ◽  
Malsawmdawngliana Malsawmdawngliana M ◽  
Lalrinzuali K Lalrinzuali ◽  
Lalnunmawia F Lalnunmawia ◽  
Vabeiryureilai M Vabeiryureilai ◽  
...  
Keyword(s):  
Free Radical ◽  
Medicinal Plants ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Free Radical Scavenging Activity ◽  
Scavenging Activity

scholarly journals Phytochemical Screening, Free Radical Scavenging and α-Amylase Inhibitory Activities of Selected Medicinal Plants from Western Nepal

Medicines ◽  
2019 ◽  
Vol 6 (2) ◽  
pp. 70 ◽  
Author(s):  
Kusum Sai ◽  
Rashmi Thapa ◽  
Hari Prasad Devkota ◽  
Khem Raj Joshi
Keyword(s):  
Free Radical ◽  
Medicinal Plants ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Free Radical Scavenging Activity ◽  
Total Phenolic ◽  
Scavenging Activity ◽  
Phytochemical Screening ◽  
Inhibitory Activities

Background: More than 700 plants are reported to be used for medicinal purposes in Nepal; however, many of them are not studied for their scientific evidences. The aims of the present study were the estimation of the total phenolic and flavonoid contents, and the evaluation of the free radical scavenging and α-amylase inhibitory activities of five selected medicinal plants from western Nepal: Aeschynanthus parviflorus Wall. (Gesneriaceae), Buddleja asiatica Lour. (Loganiaceae), Carica papaya L. (Caricaceae), Drepanostachyum falcatum (Nees) Keng f. (Gramineae) and Spondias pinnata (L. f.) Kurz (Anacardiaceae). Methods: The total phenolic content (TPC) and total flavonoid content (TFC) were measured using Folin-Ciocalteu’s phenol reagent and aluminium chloride methods, respectively. A 1,1–diphenyl–2–picrylhydrazyl (DPPH) free radical scavenging assay was used to evaluate the free radical scavenging activity and an α-amylase inhibitory assay was carried out to determine the in vitro antidiabetic activity. Results: The phytochemical screening of five hydroalcoholic plant extracts revealed the presence of various secondary metabolites, including alkaloids, flavonoids, reducing sugars, saponins, terpenoids and tannins. The amounts of total phenolics and flavonoids were found to be the highest in B. asiatica leaf extract, which also showed the most potent free radical scavenging activity. Extract of C. papaya fruits showed the highest α-amylase inhibitory activity, whereas the extracts of B. asiatica leaves and S. pinnata leaves exhibited moderate activity. Conclusions: Some of the medicinal plants selected in this study showed high TPC and TFC values and potent bioactivities. These results may provide the scientific evidences of the traditional uses of these plants. However, further detailed studies on bioactive compounds isolation and identification and evaluation of in vivo pharmacological activities should be performed in future.

scholarly journals Free-Radical Scavenging Activity (FRSA) of Secondary Metabolite Extracted from Indonesian Eucheuma spinosum

ALCHEMY ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 1-6
Author(s):  
Nurul Inayah ◽  
Masruri Masruri
Keyword(s):  
Free Radical ◽  
Ethyl Acetate ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Free Radical Scavenging Activity ◽  
Phytochemical Analysis ◽  
Scavenging Activity ◽  
Red Seaweed ◽  
Ic50 Values

IIndonesia is the biggest country in the production of red seaweed of Eucheuma spinosum. The red seaweed has bioactive compounds that have a potential activity such as phenolic compounds as well as carrageenan and pigments. This paper reported phytochemical analysis of E. spinosum harvested by a local farmer in Sumenep Island, East Java and free-radical scavenging activity (FRSA) derived from 2,2’-diphenyl-1-picrylhdrazyl (DPPH) for several organic solvents. For extraction, dried powder is added with 5.0 mL of various solvents following by ultra-sonication assisted extraction for 30 minutes. The extract was separated by centrifugation for phytochemical analysis and radical scavenging evaluation. The prospecting of dichloromethane, ethyl acetate, and n-hexane extracts indicated the potency for radical scavengers. Alkaloids, terpenoids, and saponins were secondary metabolites that indicated the presence in the extracts. The best IC50 value was presented by ethyl acetate extracts (384,86 ppm) with 38.78% for 50 ppm, while IC50 values of n-hexane, methanolic, dicloromethane extracts were 410.12, 677.76 and 685.08 ppm, respectively. Keywords: Eucheuma spinosum, phytochemical analysis, radical scavenging activity

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