Antioxidant activity, phenolic and flavonoid contents of some wild medicinal plants in southeastern Algeria

Abdelkrim, Khettaf; Belloula, Nacera; Seloua, Dridi

doi:10.5897/ajb2015.14459

Cited by 43 publications

(29 citation statements)

References 23 publications

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“…The absorbance of the reaction was measured at 765 nm after 2 h of incubation at room temperature. Results were expressed as gallic acid (Gal) equivalents (Nabavi et al, 2009;Pourmorad et al, 2006).…”

Section: Determination Of Total Phenolic Compounds and Flavonoid Contentmentioning

confidence: 99%

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Comparison of phytochemical constituents and antioxidant activities of aqueous and alcoholic extracts of saffron

Rahaiee

Hashemi

Moini

et al. 2015

Quality Assurance and Safety of Crops & Foods

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In the present work, phytochemical compounds and antioxidant activities of three aqueous, ethanolic (50 and 80%, v/v) and methanolic (50 and 80%, v/v) extracts of saffron during 1 and 24 h of shaking time were compared. Results showed that the ethanolic solution (80%, v/v) extracted for 24 h had the highest amounts of phenolic compounds (29.2 g gallic acid (Gal)/g dry weight (DW)), followed by 1 h aqueous extract (17.53 mg Gal/g DW) and 1 h methanol extract (50%, v/v, 14.5 mg Gal/g DW). The total flavonoid contents for all extracts were varied from 0.20 to 0.56 mg quercetin/g DW. Although all the extracts were capable to scavenge the 2,2'-diphenyl-1-picrylhydrazyl free-radical, ethanolic extract was found to be the best antioxidant activity (84.22%). Solvent type and extraction time had significant effects on the antioxidant capacities and phytochemical contents of the saffron extracts. A significant positive correlation was found between the antioxidant activity, total phenolic (r 2 =0.991) and flavonoid (r 2 =0.996) contents (P<0.05) for 24 h the extracted extracts. High performance liquid chromatography analysis also demonstrated that the components amounts of crocins, picrocrocin and safranal were varied in the saffron samples extracted from the different solvents.

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Section: Determination Of Total Phenolic Compounds and Flavonoid Contentmentioning

confidence: 99%

“…Then, the absorbance of the reaction mixture was measured at 415 nm using spectrophotometer. Total flavonoid content (TFC) was calculated as quercetin (QE) equivalents (Pourmorad et al, 2006).…”

Section: Determination Of Total Phenolic Compounds and Flavonoid Contentmentioning

confidence: 99%

Comparison of phytochemical constituents and antioxidant activities of aqueous and alcoholic extracts of saffron

Rahaiee

Hashemi

Moini

et al. 2015

Quality Assurance and Safety of Crops & Foods

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“…The HPLC analysis showed that the extract contain both Rutin which is flavinoid and Chlorogenic acid (figure 1,2) which is polyphenolic compound .The aim was to assess activity of the antibacterial effect of Urtica dioica N_ butanol extract against different type of bacteria that cause urinary tract infection, compared to the drug ciprofloxacine. The results showed in table (1) and by figures (3,4,5,6) illustrating the inhibition zone of both Urtica dioica N_butanol extract and ciprofloxacine and figure 7…”

Section: Resultsmentioning

confidence: 99%

Study the antibacterial effect of N_butanol extract of Urtica dioica

Ahmed¹,

Abdulah

Kamal

2022

AJPS

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Since ancient times Urtica dioica has been used as an herbal medicine in Western Asia. The current study demonstrates the anti-bacterial effect of N_butanol extraction of Urtica dioica. The antibacterial effect was tested against some of gram-positive bacteria and gram-negative bacteria isolated from hospitalized patients having urinary tract infection. Staphylococcus aureus, Escherichia coli, Klebsiella pneumonia and Pseudomonas aeruginosa was used. Urticasea is a family of plant known for their medicinal activity from folk medicine. Urtica dioica is a member of urticasea and it is known for it is antibacterial effect. Methods The leaves of Urtica dioica were collected in Iraq from jisr dayla district in Baghdad province in april 2019.The N_butanol extraction was compared with the drug ciprofloxacin. Disc diffusion method was used to determine the sensitivity of the samples. Results The N_ butanol extract shows weak inhibitory effect on Escherichia coli while other strain does not affect by extract comparing with ciprofloxacin. Conclusion The N_butanol extract of urtica dioica have weak antibacterial effect when compared with ciproflxacine

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“…The polyphenol concentration can shield cells from damage caused by free radicals [22]. One of the causes of degenerative diseases, including cancer, atherosclerosis, stroke, rheumatism, and heart disease, is free radicals [10], [23], [24].…”

Section: Determination Of Phenol Contentmentioning

confidence: 99%

Antibacterial Activity and Determination of Total Phenol and Flavonoid of Carica papaya L. Ethanol Extract

Karo-Karo

Arianto

Salim

2023

International Journal of Science, Technology & Management

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Infectious diseases are Indonesia's most common. Antibiotics are used to treat infections. Medicine needs new antibiotics due to antibiotic resistance. Antibiotics from plants are possible. Papaya leaf carpain alkaloids may be antibacterial. This study determined papaya leaf compound content, flavonoids' total phenol content, and the optimal concentration of papaya leaf ethanol extract that inhibits Staphylococcus aureus and Pseudomonas aeruginosa. The first stages of the research were the maceration of papaya leaf extract with 96% ethanol solvent, the phytochemical screening test (alkaloid, flavonoid, saponin, tannin, and steroid and triterpenoid tests), total phenol and total flavonoids tests, and the paper disc antibacterial activity test. Alkaloids, flavonoids, glycosides, tannins, steroids, and saponins were found in papaya leaf ethanol extract. Papaya leaf ethanol extract has 59.05 mgQE/g flavonoids and 56.80 GAE/g phenols. The antibacterial activity test of papaya leaf ethanol extract measured the diameter of the inhibitory zone on Staphylococcus aureus and Pseudomonas aeruginosa. Alkaloids, flavonoids, glycosides, tannins, steroids, and saponins were found in papaya leaf ethanol extract. Papaya leaf ethanol extract has 59.05 mgQE/g flavonoids and 56.80 GAE/g phenols. Papaya leaf ethanol extract had the best inhibition zone diameter for Staphylococcus aureus at 150 mg/mL (12.85 mm) and Pseudomonas aeruginosa at 150 mg/mL (13.10 mm).

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Antioxidant activity, phenolic and flavonoid contents of some wild medicinal plants in southeastern Algeria

Cited by 43 publications

References 23 publications

Comparison of phytochemical constituents and antioxidant activities of aqueous and alcoholic extracts of saffron

Comparison of phytochemical constituents and antioxidant activities of aqueous and alcoholic extracts of saffron

Study the antibacterial effect of N_butanol extract of Urtica dioica

Antibacterial Activity and Determination of Total Phenol and Flavonoid of Carica papaya L. Ethanol Extract

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