Journal ArticleDOI
Antioxidant activity and total phenolic content of methanol extracts of Ixora coccinea.
Angeline Torey,Sreenivasan Sasidharan,Lachimanan Yoga Latha,Sivaramakrishnan Sudhakaran,Surash Ramanathan +4 more
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TLDR
I. coccinea flowers revealed the best antioxidant property, presenting much lower IC50 value than other extracts, and could be considered as a potential source of natural antioxidant.Abstract:
Objective: To investigate the in vitro antioxidant activity of methanol extracts of Ixora coccinea L. (Rubiaceae) flower, leaf and stem.Materials and methods: The 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, total antioxidant capacity (TAC) and xanthine oxidase inhibition assay were carried out to evaluate the antioxidant potential of the extract. The IC50 values were calculated for the DPPH and xanthine oxidase assays in order to evaluate the antioxidant efficiency of each of the I. coccinea extracts. The phenol contents were also determined.Results: I. coccinea flowers revealed the best antioxidant property, presenting much lower IC50 value (6.6 mg/mL for DPPH assay). The flower extract showed a significantly higher antioxidant capacity compared to the other extracts. Furthermore, the highest phenolic content (polyphenols) was found in the flower extract (210.55 ± 6.31 µg GAE/mg extract). Moreover, I. coccinea extracts scavenged the superoxide radical generated by the xanthine/xanth...read more
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Journal ArticleDOI
Maximizing total phenolics, total flavonoids contents and antioxidant activity of Moringa oleifera leaf extract by the appropriate extraction method
Boonyadist Vongsak,Pongtip Sithisarn,Supachoke Mangmool,Suchitra Thongpraditchote,Yuvadee Wongkrajang,Wandee Gritsanapan +5 more
TL;DR: In this paper, different extraction methods were used to extract fresh and dried leaves of Moringa oleifera L. (Moringaceae) to obtain the maximum yields of these compounds, which consequently influence the antioxidant activity.
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Antioxidant activity and phytochemical screening of the methanol extracts of Euphorbia hirta L
TL;DR: Phytochemical screening of E. hirta leaf extract revealed the presence of reducing sugars, terpenoids, alkaloids, steroids, tannins, flavanoids and phenolic compounds.
Journal ArticleDOI
Antioxidant activity of methanol extracts of different parts of Lantana camara.
Badakhshan Mahdi-Pour,Subramanion L. Jothy,Lachimanan Yoga Latha,Yeng Chen,Sreenivasan Sasidharan +4 more
TL;DR: This study suggests that L. camara extracts exhibit great potential for antioxidant activity and may be useful for their nutritional and medicinal functions.
Journal ArticleDOI
Phytochemicals screening, DPPH free radical scavenging and xanthine oxidase inhibitiory activities of Cassia fistula seeds extract
TL;DR: In this article, the antioxidant potential of C. fistula seeds extract was evaluated by 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay and xanthine oxidase inhibition assay.
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Pharmacological activity, phytochemical analysis and toxicity of methanol extract of Etlingera elatior (torch ginger) flowers
TL;DR: Findings indicate that the extract of E. elatior flower possesses pharmacological properties and potential to develop natural products based pharmaceuticals products.
References
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Free radicals in biology and medicine
TL;DR: 1. Oxygen is a toxic gas - an introduction to oxygen toxicity and reactive species, and the chemistry of free radicals and related 'reactive species'
Book ChapterDOI
Analysis of total phenols and other oxidation substrates and antioxidants by means of folin-ciocalteu reagent
TL;DR: Aggregate analysis of this type is an important supplement to and often more informative than reems of data difficult to summarize from various techniques, such as high-performance liquid chromatography (HPLC) that separate a large number of individual compounds.
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Oxidants, oxidative stress and the biology of ageing.
Toren Finkel,Nikki J. Holbrook +1 more
TL;DR: Evidence that the appropriate and inappropriate production of oxidants, together with the ability of organisms to respond to oxidative stress, is intricately connected to ageing and life span is reviewed.
Journal ArticleDOI
The Chemistry behind Antioxidant Capacity Assays
TL;DR: This analysis suggests that the total phenols assay by FCR be used to quantify an antioxidant's reducing capacity and the ORAC assay to quantify peroxyl radical scavenging capacity, to comprehensively study different aspects of antioxidants.