scholarly journals Antioxidant Activity and Phytochemical Identification of Annona Squamosa Leaves Methanolic Extracts

2021 ◽  
Vol 13 (6s) ◽  
pp. 1746-1750
Author(s):  
Mustanir Mustanir ◽  
Nurdin Nurdin ◽  
Binawati Ginting
Keyword(s):  
Antioxidant Activity ◽  
Annona Squamosa ◽  
Methanolic Extracts

Composition of volatile oil and antioxidant activity of the oil and methanolic extracts of Ferula microcolea Boiss

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
H Amiri ◽  
M Dehshiri ◽  
A Zarei ◽  
M Mehrnia ◽  
Z Servat
Keyword(s):  
Antioxidant Activity ◽  
Volatile Oil ◽  
Methanolic Extracts

scholarly journals Antifungal and Antioxidant Potential of Methanolic Extracts from Acorus calamus L., Chlorella vulgaris Beijerinck, Lemna minuta Kunth and Scenedesmus dimorphus (Turpin) Kützing

2021 ◽  
Vol 11 (11) ◽  
pp. 4745
Author(s):  
Toncho Dinev ◽  
Milena Tzanova ◽  
Katya Velichkova ◽  
Diyana Dermendzhieva ◽  
Georgi Beev
Keyword(s):  
Antioxidant Activity ◽  
Chlorella Vulgaris ◽  
Phenolic Content ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Acorus Calamus ◽  
Total Flavonoid Content ◽  
Flavonoid Content ◽  
Methanolic Extracts ◽  
Scenedesmus Dimorphus

Plant extracts are an important alternative to antibiotics, which are ever more restricted because of their developing microbial resistance and some adverse effects that have been observed following frequent application. The aim of the present study was to determine the antifungal and antioxidant activity of the methanolic extracts of Acorus calamus, Chlorella vulgaris, Lemna minuta and Scenedesmus dimorphus. The antifungal activity of the extracts against strains of Aspergillus flavus, Aspergillus parasiticus, Aspergillus ochraceus, Aspergillus niger, Aspergillus carbonarius, Fusarium graminearum, Fusarium oxysporum, Penicillium chrysogenum and Alternaria alternata was evaluated via the agar well diffusion method. The antioxidant activity of the extracts was measured through the determination of three parameters—total phenolic content, total flavonoid content and radical scavenging potential (determined through UV/Vis analysis). A. calamus extracts had the highest antimicrobial activity against eight fungal strains, followed by the C. vulgaris, L. minuta and S. dimorphus extracts, which were inhibitory against two to three strains. Among the extracts from the species studied, the extract from S. dimorphus showed the highest antioxidant potential, as determined via the DPPH (1,1’-diphenyl-2-picrylhydrazil-radical) method. This correlated to its high total phenolic and flavonoid content. From A. calamus and L. minuta, methanolic extracts were obtained that exhibited similar values of the aforementioned parameters, followed by C. vulgaris extracts, which showed the lowest antioxidant activity. Based on the Pearson correlation coefficients, the impacts of the total phenolic content and the total flavonoid content on radical scavenging capacity are similar, and flavonoids were a significant part of the total phenolic compounds extracted from the plant materials studied.

scholarly journals Determination of Chemical Constituents and Antioxidant Activities of Leaves and Stems from Jatropha cinerea (Ortega) Müll. Arg and Jatropha cordata (Ortega) Müll. Arg

Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 212
Author(s):  
Yeimi Cecilia Vega-Ruiz ◽  
Corina Hayano-Kanashiro ◽  
Nohemí Gámez-Meza ◽  
Luis Angel Medina-Juárez
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Biological Effects ◽  
Chemical Constituents ◽  
Weather Conditions ◽  
Antioxidant Compounds ◽  
Leaf Extracts ◽  
Methanolic Extracts ◽  
Northwestern Region ◽  
High Concentrations

Jatropha species have been shown to be an important source of secondary metabolites with different biological effects. Jatropha cinerea (Ortega) Müll. Arg and Jatropha cordata (Ortega) Müll. Arg are distributed in the Northwestern region of Mexico, are adapted to extreme weather conditions and are widely used (stems, leaves, and sap) in traditional medicine. The aim of the present study was to carry out the phytochemical characterization and the evaluation of the antioxidant activity in methanolic extracts of stems and leaves from J. cinerea and J. cordata. The compounds present in the extracts of both species were characterized by ESI-IT-MS/MS and quantified by HPLC-DAD. The results showed that the stem extracts of both species are rich in phenolic acids, while the leaf extracts are rich in flavonoids. Some of the main compounds found were gallic acid, gentisic acid, 3,4-Dihydroxybenzoic acid, vitexin, isovitexin, and catechol. Both species showed high concentrations of phenols and total flavonoids and antioxidant activity. J. cordata showed the highest antioxidant capacity and the highest concentration of phenolic compounds. Overall, both Jatropha species are a natural source of antioxidant compounds with potential biotechnological uses.

scholarly journals Effect of Methanolic Extract of Caryota no on Antioxidant Levels in Drosophila melanogaster

2020 ◽  
pp. 27-35
Author(s):  
Chinonye A. Maduagwuna ◽  
Simeon Omale ◽  
Monday A. Etuh ◽  
Steven S. Gyang
Keyword(s):  
Antioxidant Activity ◽  
Drosophila Melanogaster ◽  
Methanolic Extract ◽  
Control Group ◽  
Total Protein Content ◽  
Total Thiol ◽  
Methanolic Extracts ◽  
Centre Of Excellence ◽  
Anti Oxidant ◽  
Plateau State

Aims: To investigate the anti-oxidant activity of the methanolic extracts of Caryota no seeds in Drosophila melanogaster (DM). Study Design: Experimental design. Place and Duration: Sample: African Centre of Excellence for Phytomedicine Research and Development, University of Jos, Jos Plateau State Nigeria between June 2018 and February 2019.                                                                                                                                                     Methodology: These assays were conducted by exposing 50 flies per vial to the selected concentrations (350 mg, 400 mg and 500 mg) of the extract in 5 independent replicates for seven days while control group received distilled water. The total protein content was then determined from the supernatant of the fly homogenate. The antioxidant activity and levels of GST, CAT and total thiol were then measured. The statistical difference among test groups was presumed at P < .05.                                                                                                         Results: The methanolic extract of Caryota no caused nonsignificant (P = .33) decrease in total proteins in DM below basal levels in a dose-dependent pattern.  The antioxidant activity showed nonsignificant (P = .28) lowering of the GST activity in DM below control levels. The methanolic extract of CN nonsignificantly (P > .05) increased the levels of catalase (P = .36) and total thiol levels (P = .22).                                                                                                       Conclusion: It can therefore be concluded that the methanolic extract of Caryota no contains appreciable concentrations of different types of antioxidants. This may provide perspectives for the evaluation and development of effective and safe phytomedicines created from the local biodiversity. 

scholarly journals ANTIBACTERIAL AND ANTIOXIDANT ACTIVITIES OF THE ESSENTIAL OIL OF CUMINUM CYMINUM SEEDS

AGROFOR ◽  
2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Amina BESSEDIK
Keyword(s):  
Antioxidant Activity ◽  
Essential Oil ◽  
Antioxidant Activities ◽  
Antibacterial Activities ◽  
Biological Properties ◽  
Bioactive Molecules ◽  
Natural Food ◽  
Cuminum Cyminum ◽  
Research Fields ◽  
Methanolic Extracts

Cuminum cyminum (in arabic: Kemoun) is an important source of therapeutic, cosmetic, bio-food and technological agents. Ancient civilizations used this plant for therapeutic purposes. Extracts from this plant are nowadays strongly used in the industrial and research fields, particularly for the medicinal, pharmacological and cosmetological purposes. Bioactive molecules extracted from Cuminum cyminum may express biocidal activities and prove to be good candidates for new antioxidants. The objective of the present work is to evaluate the biological properties of this plant, including antibacterial and antioxidant effects. The seeds of cumin are harvested at the wilaya of Biskra, and stored in a dry place until their use. They were identified at Hassiba Benbouali University of Chlef. Essential oil is obtained by hydro-distillation using a Clivenger type device (AFNOR, 2000). The obtained sample is stored in sealed bottles at low temperature (4°C) and away from light. The antibacterial effect is assessed by the disc method. The minimum inhibitory concentration (MIC) is determined by standard methods. The antioxidant activity is evaluated by the DPPH free radical trapping method of the methanolic extracts. The essential oil of C. cyminum shows a better activity against Gram+ strains compared to Gram- strains. The determination of MICs leads to the conclusion that its activity can be triggered at a very low concentration. The reaction with DPPH gives an interesting IC50. This testifies to the ability of this essential oil to reduce free radicals. Thanks to the antibacterial activities that we have highlighted, cumin can be considered as a palliative that could replace certain antibiotics. Moreover, its antioxidant activity allows us to use it as a natural food additive.

scholarly journals Antioxidant and Total Phenolic Content of Breadfruit (Artocarpus altilis) Leaves

2018 ◽  
Vol 150 ◽  
pp. 06007 ◽  
Author(s):  
Lee Yit Leng ◽  
Nuramira binti Nadzri ◽  
Khor Chu Yee ◽  
Norawanis binti Abdul Razak ◽  
Abdul Razak Shaari
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Copper Ions ◽  
Radical Scavenging ◽  
Chemical Components ◽  
Total Phenolic ◽  
Ftir Analysis ◽  
Artocarpus Altilis ◽  
Methanolic Extracts

This work aims to determine antioxidant, total phenolic content and Fourier transform infrared spectroscopy (FTIR) analysis of breadfruit leaves which are essential in management of diabetes. The methanolic extracts of breadfruit leaves was used to analyze for total phenolic content and antioxidant. Total phenolic content of the extracts was measured using the Folin–Ciocalteu assay while the antioxidant activity of plant extracts was measured by the 1, 1-diphenyl-2-picryhyradrazyl (DPPH) radical scavenging assay. FTIR analysis was used to determine the chemical components in the leaves. Total phenolic content in fresh breadfruit leaves (144.16 mg/g ± 17.98) was comparable to those of green tea. The results showed the breadfruit leaves extracts exhibited potent antioxidant activity. The presence of OH group also suggests antioxidant capacity of breadfruit leaves to deactivate free radicals as glucose itself could react with hydrogen peroxide in the presence of iron and copper ions to form hydroxyl radical.

Sign in / Sign up

Export Citation Format

Share Document