scholarly journals Antibacterial activity of Calotropis procera against some common human pathogens

2020 ◽  
Vol 11 (SPL4) ◽  
pp. 3016-3022
Author(s):  
Ashraf Elsayed ◽  
Ahmed Gebreil ◽  
Amal Alyamani ◽  
Auf A. Ahmad ◽  
Yasser A. El-Amier
Keyword(s):  
Petroleum Ether ◽  
Antioxidant Activities ◽  
Activity Index ◽  
Raw Material ◽  
Flowering Plant ◽  
Calotropis Procera ◽  
Klebsiella Pneumonia ◽  
Human Pathogens ◽  
Filter Paper Disc ◽  
Aerial Parts

Calotropis procera (Oshaar, family Asclepiadaceae) is a species of flowering plant used as a folk medicine for the treatment of various ailments. This study aimed to evaluate antibacterial and antioxidant activities of C. procera aerial parts collected from Eastern Desert of Egypt (Wadi Hagul). The different extracts of C. procera aerial parts showed a significant antimicrobial inhibitory effect (P < 0.05) on growth of nine pathogenic bacterial using filter paper disc assay. Qualitative and quantitative phytochemical screening was carried out on water and different extracts. The present study indicated that this plant has a good inhibitory activity against Klebsiella pneumonia (21.3 mm), Escherichia coli (22.5 mm),  and Staphylococcus aureus (21.6 mm). Moreover, methanol extract of C. procera exhibited wide broad spectrum (100%) followed by petroleum ether and water extracts (60%, each). Activity index (AI) illustrated variable antibacterial activities, that support the folkloric usage of medicinal plants for treatment of infectious pathogenic microorganism. The crude extract of C. procera showed adequate antioxidant activity, wherein methanol, ethyl acetate and petroleum ether extracts have an IC50 value of 0.81, 0.88 and 1.09 mg mL-1, respectively. Therefore, phytochemicals from C. procera could be used as a raw material for producing cheaper pharmaceuticals, pesticides in addition to many more important commercialized products of public use.

scholarly journals Potential of wild plant Artemisia judaica L. as sustainable source of antioxidant and antimicrobial compounds

1970 ◽  
pp. 04-08
Author(s):  
Yasser A. El-Amier ◽  
Abd El-Nasser S. Al Borki ◽  
Shrouk A. Elagami
Keyword(s):  
Methylene Chloride ◽  
Antioxidant Activities ◽  
Food Preservation ◽  
Wild Plant ◽  
Filter Paper Disc ◽  
Antimicrobial Substances ◽  
Aerial Parts ◽  
Ic50 Values ◽  
Anti Oxidant ◽  
Bacteria And Fungi

Artemisia judaica L. (Shih Balady, family Asteraceae), is a medicinal plant that grows in the desert, commonly used as tea by population in Egypt Sinai and of Saudi Arabia. The present study aims to evaluate antimicrobial and antioxidant activities of aerial parts of A. judaica collected from the inland desert (Wadi Hagoul) of Egypt. Total phenolics, tannins, alkaloids, flavonoids, and saponins were measured in the plant of interest. According to the reduction of DPPH the anti-oxidant activity was measured. Different extracts of A. judaica were screened for their antimicrobial activity against nine pathogenic microorganisms using filter paper disc assay. The secondary metabolites of A. judaica were examined and proved that it was rich in tannins and phenolics (13.29 and 7.62 mg/g dw). The IC50 values of A. judaica extract was 1.78 mg.ml-1 compared to standard catechol (0.15 mg.ml-1). In the present study, the extracts of A.  judaica showed unusual activity depending on the type of bacteria and fungi. Also, ethyl acetate and methyl alcohol extracts showed considerable broad spectrum (77.78%, each) against both bacteria and fungi, followed by acetone, then methylene chloride and petroleum ether extracts. This study showed that A. judaica extracts could be used as antimicrobial substances in pharmaceutical and food preservation systems.

scholarly journals Composition and Antioxidant Activities of Volatile Organic Compounds in Radiation-Bred Coreopsis Cultivars

Plants ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 717
Author(s):  
Bo-Ram Kim ◽  
Hyun Mi Kim ◽  
Chang Hyun Jin ◽  
Si-Yong Kang ◽  
Jin-Baek Kim ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Raw Material ◽  
Flowering Plant ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Organic ◽  
Radiation Induced ◽  
Further Development ◽  
Asteraceae Family

Coreopsis is a flowering plant belonging to the Asteraceae family. It is an ornamental plant native to the Americas, Asia and Oceania and its flower is used as a raw material for tea and food manufacture in China. In this study, new cultivars of C. rosea (“golden ring”) were developed via radiation-induced mutation of the original cultivar, “pumpkin pie”. The chemical composition and antioxidant activities of flowers belonging to three different Coreopsis cultivars were evaluated: “golden ring”, “pumpkin pie” and “snow chrysanthemum” (coreopsis tea; C. tinctoria). The volatile compounds were characterized via gas chromatography-mass spectrometry (GC-MS) and 50–59 oils representing 95.3–96.8% of the total volatile compounds in these flower materials were identified. ”Golden ring” contained a high amount of fatty acids (38.13%), while “pumpkin pie” and “snow chrysanthemum” teas were rich in aliphatic amides (43.01%) and esters (67.22%), respectively. The antioxidant activities of the volatile oils of these cultivars were evaluated using 1,1-diphenyl-2-picrylhydraxyl (DPPH) and 2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) radical scavenging assays. The volatile extract of “golden ring” showed higher antioxidant activities compared with the extracts of the other cultivars. Therefore, “golden ring” can be used for further development as a raw material for tea manufacture or as a dietary supplement.

scholarly journals Antioxidant, antimicrobial and neutrophil-modulating activities of herb extracts.

2014 ◽  
Vol 61 (2) ◽  
Author(s):  
Petko Denev ◽  
Maria Kratchanova ◽  
Milan Ciz ◽  
Antonin Lojek ◽  
Ondrej Vasicek ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Antimicrobial Effect ◽  
Rubus Idaeus ◽  
Ros Production ◽  
Human Pathogens ◽  
Aronia Melanocarpa ◽  
Aerial Parts ◽  
Kinase C ◽  
Zymosan Particle ◽  
Protein Kinase C Activation

The present study provides a comprehensive data on the antioxidant, antimicrobial and neutrophil-modulating activities of extracts from six medicinal plants--blackberry (Rubus fruticosus) leaves, chokeberry (Aronia melanocarpa) leaves, hawthorn (Crataegus monogyna) leaves, lady's mantle (Alchemilla glabra) aerial parts, meadowsweet (Filipendula ulmaria) aerial parts and raspberry (Rubus idaeus) leaves. In order to analyze the antioxidant activity of the herbs, several methods (ORAC, TRAP, HORAC and inhibition of lipid peroxidation) were used. Blackberry leaves and meadowsweet extracts revealed the highest antioxidant activities via all methods. All extracts studied blocked almost completely the opsonized zymosan particle-activated ROS production by neutrophils from human whole blood. On the other hand, the effect of extracts on phorbol myristate acetate-activated ROS production was much milder and even nonsignificant in the case of chokeberry leaves. This latter result suggests that extracts (apart from their antioxidative activity) interfere with the signaling cascade of phagocyte activation upstream of the protein kinase C activation. The antimicrobial activity of the investigated extracts against 11 human pathogens was investigated using three different methods. Meadowsweet and blackberry leaves extracts had the highest antimicrobial effect and the lowest minimal inhibiting concentrations (MICs) against the microorganisms tested.

scholarly journals Antibacterial and Antioxidant Activities of the Extract and Some Flavonoids From Aerial Parts of Echinops Gracilis O. Hoffm. (Asteraceae)

2021 ◽  
Vol 16 (3) ◽  
pp. 1934578X2199915
Author(s):  
Fidèle Castro Weyepe Lah ◽  
Marius Balemaken Missi ◽  
Natasha October ◽  
Patrick Herve Betote Didoue ◽  
Nalova Hermia Nalova Ikome ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Klebsiella Pneumonia ◽  
Significant Activity ◽  
Microbial Diseases ◽  
Phytochemical Study ◽  
Etoac Extract ◽  
Chemical Structures ◽  
Aerial Parts ◽  
Inhibition Concentration ◽  
Ir Spectroscopic

Mortality due to microbial diseases continues to be a major problem in many developing countries. The present study aims to evaluate the antibacterial and antioxidant activities of the ethyl acetate extract and some isolated compounds from aerial parts of Echinops gracilis. The phytochemical study resulted in the isolation of a new flavonoid derivative named apigenin-7- O-(4″-feruloyl)-β-D-glucoside (1), together with 2 known compounds: apigenin -7-O-(4″-trans- p-hydroxycinnamoyl) -β-D-glucoside (2), and apigenin -7-O-glucoside (3). Their chemical structures were determined using a combination of NMR and IR spectroscopic and MS techniques, as well as by comparison with literature data. The extract and isolates were evaluated for their antibacterial and antioxydant properties. The EtOAc extract and compounds 1 and 2 showed the ability to scavenge 2,2′-zino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) radical cation (ABTS) with scavenging concentration (SC50) values of 13.6 ± 0.8 µg/mL, 108.2 ± 4.3 µg/mL, and 28.5 ± 2.2 µg/mL, respectively. In addition, compound 1 displayed significant activity against Escherichia coli, Pseudomonas aeruginosa, and Klebsiella pneumonia, with minimum inhibition concentration (MIC) values of 31.2, 15.6, and 31.2 µg/mL respectively.

scholarly journals TO STUDY THE ANTIBACTERIAL ACTIVITY OF VARIOUS EXTRACTS OF CLAUSENA DENTATA (WILLD.) ROEM.

2019 ◽  
pp. 69-73
Author(s):  
ANNAMALAI MADURAM ◽  
RAJU KAMARAJ
Keyword(s):  
Antibacterial Activity ◽  
Tamil Nadu ◽  
Pathogenic Bacteria ◽  
Volatile Oil ◽  
Stem Bark ◽  
Salmonella Typhi ◽  
Chloroform Extract ◽  
Klebsiella Pneumonia ◽  
Human Pathogens ◽  
Human Pathogenic Bacteria

Objectives: The objectives of the study were to study the antibacterial activity for the various extracts of Clausena dentata against human pathogens. Clausena (Rutaceae) is a genus of about 23 species of unarmed trees and shrubs. The stem bark of C. dentata is used in veterinary medicine for the treatment of wounds and sprains. Even though C. dentata has a lot of potential medical uses, the study of microbiological properties is very scarce. Methods: The plant C. dentata was collected from Kadagaman, near Tiruvannamalai, Tamil Nadu, India, and authenticated by Centre for Advanced Study in Botany, University of Madras, Chennai. The dry powder of stem bark was extracted with hexane, chloroform, and methanol. The extracts were subjected to qualitative phytochemical screening and antibacterial activity against human pathogenic bacteria such as Escherichia coli, Salmonella Typhi, Klebsiella pneumonia, Vibrio cholerae, and Staphylococcus aureus and compared with ciprofloxacin. Results: Qualitative chemical tests revealed the presence of various phytochemicals such as alkaloids, glycosides, carbohydrate, proteins and amino acids, phytosterols, and volatile oil. The antibacterial activity result reveals that all the extracts were are more active against V. cholerae. The activity against Pseudomonas aeruginosa was mild. Conclusion: The activity against V. cholerae was comparable with that of 5 μg/mL ciprofloxacin at the concentration of C. dentata 40 μg/mL. The orders of antibacterial activity against human pathogenic bacteria are hexane, methanol, and chloroform extract of C. dentata.

scholarly journals Phytochemical Fingerprinting and In Vitro Antimicrobial and Antioxidant Activity of the Aerial Parts of Thymus marschallianus Willd. and Thymus seravschanicus Klokov Growing Widely in Southern Kazakhstan

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3193
Author(s):  
Bagda Sagynaikyzy Zhumakanova ◽  
Izabela Korona-Głowniak ◽  
Krystyna Skalicka-Woźniak ◽  
Agnieszka Ludwiczuk ◽  
Tomasz Baj ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Protocatechuic Acid ◽  
Antioxidant Activities ◽  
Methyl Esters ◽  
Bactericidal Effect ◽  
Ethyl Esters ◽  
Volatile Fraction ◽  
Aerial Parts ◽  
Antimicrobial And Antioxidant Activity

The chemical composition of the hydroethanolic extracts (60% v/v) from the aerial parts of Thymus marschallianus Willd (TM) and Thymus seravschanicus Klokov (TS) from Southern Kazakhstan flora was analyzed together with their hexane fractions. Determination of antibacterial, antifungal and antioxidant activities of both extracts was also performed. RP-HPLC/PDA and HPLC/ESI-QTOF-MS showed that there were some differences between the composition of both extracts. The most characteristic components of TM were rosmarinic acid, protocatechuic acid, luteolin 7-O-glucoside, and apigenin 7-O-glucuronide, while protocatechuic acid, luteolin 7-O-glucoside, luteolin 7-O-glucuronide, and eriodictyol predominated in TS. The content of polyplenols was higher in TS than in TM. The GC-MS analysis of the volatile fraction of both examined extracts revealed the presence of thymol and carvacrol. Additionally, sesquiterpenoids, fatty acids, and their ethyl esters were found in TM, and fatty acid methyl esters in TS. The antioxidant activity of both extracts was similar. The antibacterial activity of TS extract was somewhat higher than TM, while antifungal activity was the same. TS extract was the most active against Helicobacter pylori ATCC 43504 with MIC (minimal inhibitory concentration) = 0.625 mg/mL, exerting a bactericidal effect. The obtained data provide novel information about the phytochemistry of both thyme species and suggest new potential application of TS as a source of bioactive compounds, especially with anti-H. pylori activity.

Essential Oil of Deverra tortuosa Aerial Parts: Detailed Chemical Profile, Allelopathic, Antimicrobial, and Antioxidant Activities

2021 ◽  
Vol 18 (4) ◽  
Author(s):  
Eman M. Fayed ◽  
Ahmed M. Abd‐EIGawad ◽  
Abdelsamed I. Elshamy ◽  
El‐Sayed F. El‐Halawany ◽  
Yasser A. EI‐Amier
Keyword(s):  
Essential Oil ◽  
Antioxidant Activities ◽  
Chemical Profile ◽  
Aerial Parts ◽  
Detailed Chemical

scholarly journals Phytochemistry and Biological Activities of Iris Species Growing in Iraqi Kurdistan and Phenolic Constituents of the Traditional Plant Iris postii

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 264
Author(s):  
Hawraz Ibrahim M. Amin ◽  
Faiq H. S. Hussain ◽  
Soran K. Najmaldin ◽  
Zaw Min Thu ◽  
Mohammed Farhad Ibrahim ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Biological Activities ◽  
Radical Scavenging ◽  
Chromatographic Separations ◽  
Traditional Use ◽  
Methanolic Extracts ◽  
Aerial Parts ◽  
Traditional Remedies ◽  
Phenolic Constituents ◽  
Total Antioxidant

A dozen Iris species (Iridaceae) are considered traditional remedies in Kurdistan, especially for treating inflammations. Phytochemical studies are still scarce. The information reported in the literature about Iris species growing in Kurdistan has been summarized in the first part of this paper, although, except for Iris persica, investigations have been performed on vegetal samples collected in countries different from Kurdistan. In the second part of the work, we have investigated, for the first time, the contents of the methanolic extracts of Iris postii aerial parts and rhizomes that were collected in Kurdistan. Both extracts exhibited a significant dose-dependent free radical scavenging and total antioxidant activities, comparable to those of ascorbic acid. Medium-pressure liquid chromatographic separations of the two extracts afforded l-tryptophan, androsin, isovitexin, swertisin, and 2″-O-α-l-rhamnopyranosyl swertisin from the aerial parts, whereas ε-viniferin, trans-resveratrol 3,4′-O-di-β-d-glucopyranoside, and isotectorigenin were isolated from the rhizomes. This is the first finding of the last three metabolites from an Iris species. The various remarkable biological activities of isolated compounds scientifically sustain the traditional use of I. postii as a medicinal plant.

Antidiabetic and Antioxidant Activities of Major Flavonoids of Cynanchum acutum L. (Asclepiadaceae) Growing in Egypt

2008 ◽  
Vol 63 (9-10) ◽  
pp. 658-662 ◽  
Author(s):  
Ghada A. Fawzy ◽  
Hossam M. Abdallah ◽  
Mohamed S. A. Marzouk ◽  
Fathy M. Soliman ◽  
Amany A. Sleem
Keyword(s):  
Blood Glucose ◽  
Spectroscopic Data ◽  
Methanolic Extract ◽  
Antioxidant Activities ◽  
First Report ◽  
Insulin Levels ◽  
Butanol Fraction ◽  
Aerial Parts ◽  
First Time

Seven flavonoids were isolated from the butanol fraction of the methanolic extract of the aerial parts of Cynanchum acutum L. (Asclepiadaceae). All of which have been isolated for the first time from the genus Cynanchum. Their structures were established as quercetin 3-O-β-galacturonopyranoside (1), quercetin 7-O-β-glucopyranoside (2), tamarixtin 3-O-β-galacturonopyranoside (3), kaempferol 3-O-β-galacturonopyranoside (4), 8-hydroxyquercetin 3-O-β-galactopyranoside (5), tamarixtin 3-O-α-rhamnopyranoside (6), and tamarixtin 7-O-α-arabinopyranoside (7) on the basis of their chromatographic properties, chemical and spectroscopic data. The major isolated flavonoids 1, 2 and 3 were found to exhibit significant antioxidant and antidiabetic activities (by measuring blood glucose and insulin levels). This is the first report about the antioxidant and antidiabetic activities of compounds 1 - 3.

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