Effects of Seasonal Variation on Antioxidant Potential and Total Phenolic Content of Zanthoxylum Armatum

Sarkar, Biresh Kumar; Krishna, C. Murali; Tomar, Rinku; Kumar, Ravi; Pal, Shashi; Maddi, Ramaiah

doi:10.7897/2277-4343.08256

Cited by 2 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other studies using different plants corroborated seasonal influence on both total phenolic contents and RSA 31,32 . In presence of oxygen, lipids are oxidized leading to the occurrence of chain reactions with the formation of coupled double bonds primary oxidation products such as conjugated dienes.…”

Section: Resultsmentioning

confidence: 60%

Seasonal variations in phenolics and antioxidant properties of leaves extract from Celtis australis

2019

IJGHC

View full text Add to dashboard Cite

Seasonal variations have an influence on the availability of secondary metabolites of plants, which impacts their therapeutic efficacy. For some plants, the bioavailability of secondary metabolites, and thus the harvest period, is better in the spring, while for others it is summer. Celtis australis (Cannabaceae), a deciduous tree, is used in the treatment of various diseases in many traditional systems around the world. In the present work, seasonal influence on total polyphenols, flavonoids and condensed tannins contents as well as on the antioxidant potential of leaves hydromethanolic extract from Celtis australis have been evaluated. Plant leaves were harvested during spring and summer which are its flowering and fruiting seasons respectively. The total phenols, flavonoids and condensed tannins contents were quantified by spectrophotometry using Gallic acid, Quercetin and Catechin as standards respectively. The antioxidant potential of the plant extracts was evaluated using three complementary methods: DPPH radical scavenging activity, conjugated dienes and TBARS inhibition during linoleic acid peroxidation. Our results showed that the levels of all quantified compounds increased significantly during the growing season until midsummer and this increase is positively correlated with the antioxidant Seasonal … Ahmed EL ABBOUYI.

show abstract

Section: Resultsmentioning

confidence: 60%

Seasonal variations in phenolics and antioxidant properties of leaves extract from Celtis australis

2019

IJGHC

View full text Add to dashboard Cite

show abstract

“…The degree of discoloration indicates the scavenging potential of the antioxidant extract. The change in the absorbance produced at 517nm has been used as a measure of antioxidant activity 10,11 .…”

Section: Determination Of Antioxidant Activitymentioning

confidence: 99%

“…A graph was plotted with concentration (μg/ml) on X axis and % scavenging on y axis and IC 50 values were calculated, which represents the concentration of the scavenging compound that caused 50% neutralization 10,11 .…”

Section: Absorbance Of Controlmentioning

confidence: 99%

Untitled

2018

IJPSR

View full text Add to dashboard Cite

Randia spinosa (Rubiaceae family), commonly known as 'Mainphal' is a large shrub or small tree. The plant grows in Brazil, Ceylon, China, East tropical Africa, India, Malaya and Sumatra. The leaves of Randia spinosa is used in traditional medicine to treat diarrhea and dysentery, snake bite, wound healing, inflammation, tumors, piles, gastrointestinal and skin diseases. The objective of this study is to investigate pharmacognostical, phytochemical features and antioxidant activity of ethanol and aqueous extracts of Randia spinosa leaves by using DPPH assay method. Pharmacognostical characteristics like microscopy, total ash, acid insoluble ash, water insoluble ash and sulphated ash and loss on drying of Randia spinosa leaves were determined. The preliminary phytochemical studies were performed with various reagents and chemicals on leaf extracts in order to determine the various secondary metabolites. The ethanol and aqueous extracts of Randia spinosa leaves were screened for in-vitro antioxidant activity by oxygen radical scavenging such as 1, 1-diphenyl-2picryl hydrazyl (DPPH) method. Pharmacognostical studies reveal the microscopical and macroscopical characters of Randia spinosa leaves. Phytochemical screening of the ethanol and aqueous extracts of Randia spinosa leaves revealed the presence of secondary metabolites like alkaloids, carbohydrates, proteins and amino acids, tannins, saponins, flavonoids and glycosides. The ethanol and aqueous extracts showed good dose dependent free radical scavenging property. IC 50 values for aqueous and ethanol extracts were calculated by DPPH method. Aqueous extract had shown more free radical scavenging power as compared to ethanol extract. Ascorbic acid was used as standard. The results indicate that ethanol and aqueous extracts of Randia spinosa leaf exhibited antioxidant activity, supporting its uses in traditional medicine. Further studies on the isolation of bioactive phytoconstituents of Randia spinosa leaves and their mechanism of action are strongly recommended before its application to humans.

show abstract

Effects of Seasonal Variation on Antioxidant Potential and Total Phenolic Content of Zanthoxylum Armatum

Cited by 2 publications

References 10 publications

Seasonal variations in phenolics and antioxidant properties of leaves extract from Celtis australis

Seasonal variations in phenolics and antioxidant properties of leaves extract from Celtis australis

Untitled

Contact Info

Product

Resources

About