scholarly journals Antioxidant and antimicrobial activity of whole seed extracts of Perseaamericana Mill

2016 ◽  
Vol 4 (04) ◽  
pp. 15-18
Author(s):  
Sooad Al-Daihan ◽  
Abeer M Aldbass ◽  
Latifah M Alotebi ◽  
Ramesa Shafi Bhat
Keyword(s):  
Antibacterial Activity ◽  
Aqueous Extract ◽  
Methanol Extract ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Diffusion Method ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Dpph Radical Scavenging Activity ◽  
Dpph Radical Scavenging

Perseaamericana Mill used in traditional medicine for the treatment of various ailments and has antibacterial, antifungal, anti-viral and wound-healing properties. In the present study, antioxidant and antibacterial activity of different extracts of Perseaamericana Mill were investigated. Antioxidant potential of plant extracts was evaluated by means of total phenolic, total flavonoids content and DPPH radical scavenging activity. The highest phenolic and flanovoid content was observed in methanol extract while the lowest was achieved in aqueous extract. At concentration of 500 SOH g/mL, DPPH radical scavenging activity was found to be highest in methanol extract (70%) and lowest in aqueous extract (51%). Antibacterial activity of different extracts was evaluated by using the disk diffusion method. Highest antibacterial activity was observed with methanol extract against S. pyogenes, while minimum activity was observed with aqueous extract against E.coli.

STUDY OF ANTIBACTERIAL AND ANTIOXIDANT ACTIVITIES OF SAXICOLOUS LICHEN $ \textit{XANTHOPARMELIA STENOPHYLLA} $

2020 ◽  
Vol 54 (2 (252)) ◽  
pp. 132-137
Author(s):  
A.G. Simonyan ◽  
R.R. Sargsyan ◽  
H.H. Panosyan ◽  
A.H. Trchounian
Keyword(s):  
Methanol Extract ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Dpph Radical Scavenging Activity ◽  
Gram Positive Bacteria ◽  
Acetone Extracts ◽  
Dpph Radical Scavenging

Antibacterial and antioxidant activities of different extracts of saxicolous lichen Xanthoparmelia stenophylla sampled from Norashen, Gegharkunik Province of Armenia were studied. Methanol, ethanol and acetone extracts of lichen thalli were demonstrated to have activity against only tested gram-positive bacteria. Methanol extract of the lichen showed the highest amount of DPPH radical scavenging activity (~68%). Our studies did not reveal any significant antibacterial and antioxidant activities of aqueous extract.

scholarly journals Determination of Antioxidant Activity and Total Tannin from Drumstick (Moringa oleifera Lam.) Leaves Using Different Solvent Extraction Methods

2020 ◽  
Vol 8 (12) ◽  
pp. 2749-2755
Author(s):  
Mohammad Afzal Hossain ◽  
Nadia Khan Disha ◽  
Jahid Hasan Shourove ◽  
Pappu Dey
Keyword(s):  
Antioxidant Activity ◽  
Methanol Extract ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Ethanol Extract ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Tannin Content ◽  
Dpph Radical Scavenging Activity ◽  
Dpph Radical Scavenging

This study was undertaken to estimate the antioxidant activity and total tannin content of Moringa olifera Lam. (Moringa) leaves and find a suitable extraction condition for maximum yield. Two types of solvent and three different extraction times and temperatures were experimented for extraction. Moringa leaves were oven-dried and powdered to determine the antioxidant activity in terms of total phenolic content (TPC), ferric reducing antioxidant power (FRAP), and DPPH radical scavenging activity and total tannin content. The maximum TPC value noted in methanol extract, and it ranges from 6.46 ± 0.34 g to 3.91±0.19 g gallic acid equivalent (GAE)/100g dry sample (DM). The FRAP values varied from 211.6 ± 3.75 to 344.13 ± 3.26 mg ascorbic acid equivalent (AAE)/100g DM and 166.67 ± 2.90 to 224.93 ± 1.94 mg AAE/100g DM, for methanol and ethanol extract, respectively. The DPPH radical scavenging activity ranged from 46.32 ± 1.07 to 58.09 ± 0.92% for methanol extract and 56.76 ± 1.48% to 69.72 ± 1.15% for ethanol extract. The total tannin content varied from 6.84 ± 0.05 to 10.22 ± 1.11 mg GAE/100 g dry sample and 6.77 ± 0.08 to 9.23 ± 0.51 mg GAE/ 100g DMfor methanol and ethanol extract, respectively. The highest antioxidant yield for methanol and ethanol extract of Moringa leaves differed for various conditions. Overall, Moringa leaves showed excellent antioxidant properties that can be commercially and domestically used.

scholarly journals Enhancing Phenolic Content of Medicinal Aromatic Plants Extracts-Biofunctional Foods Preparation

Plants ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 76
Author(s):  
Maria G. Ziagova ◽  
Charoula Mavromatidou ◽  
Georgios Samiotis ◽  
Elisavet Amanatidou
Keyword(s):  
Aqueous Extract ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Gum Arabic ◽  
Scavenging Activity ◽  
Aqueous Extracts ◽  
Dpph Radical ◽  
Dpph Radical Scavenging Activity ◽  
Activity Enhancement ◽  
Dpph Radical Scavenging

In this study, the assessment of TPC and antioxidant activity enhancement of medicinal and aromatic plant (MAP) aqueous extracts using natural sweeteners or encapsulation materials was carried out. MAP extracts fortified with polyphenols were used to produce biofunctional chocolate bites. Honey or erythritol added to Melissa officinalis concentrated aqueous extracts exhibited TPC at 19.53 mg GAE/mL and 18.24 mg GAE/mL, respectively, and DPPH radical scavenging activity greater than 82%, comparing to its non-concentrated aqueous extract (3.74 mg GAE/mL and 72.9%, respectively). Honey added to MAP concentrated aqueous extract mixtures presented up to twofold higher TPC compared to M. officinalis concentrated aqueous extracts with honey. Chocolate bites with MAP concentrated aqueous extract mixtures and honey exhibited TPC and DPPH radical scavenging activity at 29.48 mg GAE/g chocolate and 93.7%, respectively. The addition of gum arabic or inulin in MAP concentrated aqueous extract mixtures increased the TPC up to 12-fold (40.37 mg GAE/mL and 34.14 mg GAE/mL, respectively) compared to its non-concentrated aqueous extracts (3.38 mg GAE/mL), whereas DPPH radical scavenging activity approached 99.5%. Honey incorporation as a sweetener and polyphenolic compound encapsulation in gum arabic can lead to the production of biofunctional foods with elevated cytoprotective action without compromising their organoleptic attributes.

scholarly journals Chemical and Antioxidant Properties of Broccoli Growing in Bangladesh

1970 ◽  
Vol 9 (1) ◽  
pp. 31-37 ◽  
Author(s):  
Ismet Ara Jahan ◽  
M Mostafa ◽  
Ishrat Nimmi ◽  
M Hemayet Hossain ◽  
Moinul Ahsan ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Methanol Extract ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Ferrous Ion ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Dpph Radical Scavenging Activity ◽  
Chelating Ability ◽  
Dpph Radical Scavenging

Broccoli (Brassica oleracea var. italica) a cruciferous vegetable growing in Bangladesh was investigated to determine the fatty acid components, elemental concentrations, ascorbic acid content and antioxidant activity. A total of fifteen compounds were identified from the methylated esters of the fatty acids of flower and stem of broccoli when analyzed by GC-MS. The major compounds were linoleic acid, palmitic acid. linolenic acid, oleic acid, stearic acid and myrestic acid. Elemental analysis was done by XRF method which showed that both the flower and stem contained a significant amount of Na, K, Ca, Mg, Fe, P and Cl. However, heavy metals were not found in any of the broccoli samples. The broccoli flower and stem contained 42.20±0.263 mg and 120±0.254 mg of ascorbic acid per 100g of fresh samples. The methanol extract of broccoli exhibited the highest DPPH radical scavenging activity among methanol, acetone and water extracts. The indegenous broccoli was found to have highest DPPH radical scavenging activity (> 90%) which was comparable to standard ascorbic acid (98.22±1.122%) and BHA (96.01±0.983 %). Methanol extract of flower and stem exhibited highest ferrous ion chelating ability ((91.85±0.951 and 97.38±1.241) respectively whereas the ascorbic acid and BHA hardly demonstrated any ferrous ion chelating ability. These results clearly indicated that Bangladeshi broccoli has a significant potential for uses as nutrients and antioxidant suppliments. Key words: Broccoli; Fatty acids; Minerals; Vitamin C; Free radical scavenging power; Reducing power; Ferrous ion chelating ability. DOI: 10.3329/dujps.v9i1.7427 Dhaka Univ. J. Pharm. Sci. 9(1): 31-37 2010 (June)

Phytochemical Analysis, Antibacterial and Antioxidant Potential of Marine Red Seaweed Caulacanthusustulatus

2019 ◽  
Vol 12 (6) ◽  
pp. 4701-4708
Author(s):  
Mohideen Askar Nawas P ◽  
Sujatha Ravi
Keyword(s):  
Antibacterial Activity ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Phytochemical Analysis ◽  
Scavenging Activity ◽  
Red Seaweed ◽  
Dpph Radical ◽  
Dpph Radical Scavenging Activity ◽  
Hydroxyl Radical Scavenging Activity ◽  
Dpph Radical Scavenging

Marine algae are known to produce a wide variety of bioactive secondary metabolites and several compounds have been derived from them for prospective development of novel drugs by the pharmaceutical industries. The marine red seaweed Caulacanthusustulatus, collected from the Kilakarai region located between (9.23135° N, 78.7844° E) Ramanathapuram District, Tamil Nadu, India. The seaweed extract was prepared from various solvent extracts namely aqueous, ethanol, methanol and acetone was tested for their phytochemical analysis, antibacterial activity against human pathogens viz., Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus and aquatic pathogens viz., Aeromonas hydrophila and Vibrio vulnificus using disc diffusion methods and in vitro antioxidant activity such as DPPH radical scavenging activity, ABTS radical scavenging activity and Hydroxyl radical scavenging activity of selected solvent extracts. Phytochemical analysis of sixteen different chemical compounds was carried out. The maximum nine phytochemical compounds were present in the methanol and ethanol extracts and the minimum six compounds were present in aqueous extract. The highest antibacterial activity was present in human pathogen P. aeruginosa (20.66 ± 1.1mm) likewise the aquatic pathogen the antibacterial activity was increase in Aeromonas hydrophila (20.33 ± 1.5mm). The methanol extract was significantly higher in DPPH radical scavenging activity (67.07 ± 0.5μg/ml), ABTS radical scavenging activity (72.4 ± 0.6 μg/ml) and Hydroxyl radical scavenging activity (54.06 ± 0.58μg/ml). This study indicates the potential use of red seaweed; in particularC.ustulatus extracts are treating human and aquatic bacterial pathogens and it could be a potential candidate for the natural compounds as antioxidant.

scholarly journals Antiglycation and Antioxidant Properties of Ficus deltoidea Varieties

2020 ◽  
Vol 2020 ◽  
pp. 1-16
Author(s):  
Nur Sumirah Mohd Dom ◽  
Nurshieren Yahaya ◽  
Zainah Adam ◽  
Nik Mohd Afizan Nik Abd. Rahman ◽  
Muhajir Hamid
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Protein Carbonyl ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Dpph Radical Scavenging Activity ◽  
Ficus Deltoidea ◽  
Dpph Radical Scavenging

The present study aimed to evaluate the potential of standardized methanolic extracts from seven Ficus deltoidea varieties in inhibiting the formation of AGEs, protein oxidation, and their antioxidant effects. The antiglycation activity was analyzed based on the inhibition of AGEs, fructosamine, and thiol groups level followed by the inhibition of protein carbonyl formation. The antioxidant activity (DPPH radical scavenging activity and reducing power assay) and total phenolic contents were evaluated. After 28 days of induction, all varieties of Ficus deltoidea extracts significantly restrained the formation of fluorescence AGEs by 4.55–5.14 fold. The extracts also reduced the fructosamine levels by 47.0–86.5%, increased the thiol group levels by 64.3–83.7%, and inhibited the formation of protein carbonyl by 1.36–1.76 fold. DPPH radical scavenging activity showed an IC50 value of 66.81–288.04 μg/ml and reducing power activity depicted at 0.02–0.24 μg/ml. The extent of phenolic compounds present in the extracts ranged from 70.90 to 299.78 mg·GAE/g. Apart from that, correlation studies between the activities were observed. This study revealed that seven varieties of Ficus deltoidea have the potential to inhibit AGEs formation and possess antioxidant activity that might be attributed to the presence of phenolic compounds.

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