In vitro Antimicrobial and Antioxidant Activity of Extracts from Six Chemotypes of Medicinal Cannabis

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
A Frankova ◽  
A Janatova ◽  
J Tauchen ◽  
L Kokoska
Keyword(s):  
Antioxidant Activity ◽  
Medicinal Cannabis ◽  
Antimicrobial And Antioxidant Activity

scholarly journals Microwave-Assisted Synthesis, Characterization, Antimicrobial and Antioxidant Activity of Some New Isatin Derivatives

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
G. Kiran ◽  
T. Maneshwar ◽  
Y. Rajeshwar ◽  
M. Sarangapani
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Radical Scavenging ◽  
Microwave Assisted Synthesis ◽  
Stable Free Radical ◽  
Ft Ir ◽  
Antimicrobial And Antioxidant Activity ◽  
New Compounds ◽  
Isatin Derivatives

A series of β-Isatin aldehyde-N,N′-thiocarbohydrazone derivatives were synthesized and assayed for theirin vitroantimicrobial and antioxidant activity. The new compounds were characterized based on spectral (FT-IR, NMR, MS) analyses. All the test compounds possessed a broad spectrum of activity having MIC values rangeing from 12.5 to 400 μg/ml against the tested microorganisms. Among the compounds3e,3jand3nshow highest significant antimicrobial activity. The free radical scavenging effects of the test compounds against stable free radical DPPH (α,α-diphenyl-β-picryl hydrazyl) and H2O2were measured spectrophotometrically. Compounds3j,3n,3l, and3e, respectively, had the most effective antioxidant activity against DPPH and H2O2scavenging activity.

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.

scholarly journals In-vitro antimicrobial and antioxidant activity of Argyreia cuneata (Willd.) Ker Gawl. (Convolvulaceae)

2018 ◽  
Vol 8 (6) ◽  
pp. 22-27
Author(s):  
TR Prashith Kekuda ◽  
Nitish A. Bharadwaj ◽  
MB Sachin ◽  
BK Sahana ◽  
GS Priyanka
Keyword(s):  
Antioxidant Activity ◽  
Antifungal Activity ◽  
Leaf Extract ◽  
Shigella Flexneri ◽  
Radical Scavenging ◽  
Flower Extract ◽  
Stem Extract ◽  
Poisoned Food Technique ◽  
Antimicrobial And Antioxidant Activity

Objectives: Argyreia cuneata (Willd.) Ker Gawl. belongs to the family Convolvulaceae. The present study was performed to screen the potential of crude extract of various parts of A. cuneata to exhibit antimicrobial activity. Methods: Extraction of shade dried and powdered leaf, stem and flower of A. cuneata was carried out by maceration technique. Antibacterial and antifungal activity of extracts was evaluated by Agar well diffusion and Poisoned food technique respectively. Antioxidant activity was determined by DPPH radical scavenging, ABTS radical scavenging and ferric reducing assays. Results:  All extracts were effective in inhibiting test bacteria and the susceptibility of bacteria to extracts was in the order: Bacillus cereus > Shigella flexneri > Escherichia coli > Salmonella typhimurium. Leaf extract and stem extract exhibited highest and least antibacterial activity, respectively. Extracts were effective in causing inhibition of seed-borne fungi viz. Aspergillus niger and Bipolaris sp to >50%. Leaf extract exhibited marked antifungal activity followed by flower extract and stem extract. All extracts were shown to exhibit concentration dependent scavenging and reducing activity. Antioxidant activity of extracts observed was in the order: leaf extract > flower extract > stem extract.  Conclusion: Among various parts of A. cuneata, leaf extract exhibited marked antimicrobial and antioxidant activity. The plant can be employed as an effective antimicrobial and antioxidant agent in suitable form. Further studies may be undertaken to recover phytochemicals from the plant and to investigate the antimicrobial and antioxidant activity of isolated components. Keywords: Argyreia cuneata, Maceration, Antimicrobial, Agar well diffusion, Poisoned food technique, Antioxidant

scholarly journals EVALUATION OF ANTIMICROBIAL AND ANTIOXIDANT ACTIVITY OF ISOLATED CONSTITUENTS FROM AREAL PART OF CUSCUTA REFLEXA ROXB. PLANT

2018 ◽  
Vol 11 (3) ◽  
pp. 187
Author(s):  
Sandeep Sandeep ◽  
Abhilasha Mittal ◽  
Abhilasha Mittal
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Diffusion Method ◽  
E Coli ◽  
Cuscuta Reflexa ◽  
Isolated Compound ◽  
Antimicrobial And Antioxidant Activity ◽  
Dpph Radical Scavenging

 Objective: The objective of the study was to investigate the pharmacological evaluation of previously isolated compounds (CR-1 to CR-5) from the areal part of Cuscuta reflexa Roxb. is reported.Methods: The antimicrobial and antioxidant activity of the isolated compounds (CR-1 to CR-5) from C. reflexa was determined by the disc-diffusion method and 1,1-diphenyl-2-picryl-hydrazyl (DPPH) model, respectively. The antimicrobial activity was performed against four strains Staphylococcus aureus, Bacillus subtilis, Escherichia coli, and Pseudomonas aeruginosa.Results: The results revealed that highest zone of inhibition is measured by compound CR-5 against E. coli. The antioxidant activity is evaluated for in vitro antioxidant activity using DPPH radical scavenging activity, inhibitory concentration 50% (IC50) (120.92–76.38 %), respectively. The results indicate that isolated compound CR-1 and CR-2 having IC50 76.38 and 76.94 μg/ml, respectively, showed potent antioxidant activity comparable to standard ascorbic acid (IC50 43.42 μg/ml).Conclusion: This study suggests that areal part of C. reflexa have bioactive compounds for a new antimicrobial and antioxidant drug development.

scholarly journals Parameters of obtaining tincture from underground organs of Sanguisorba officinalisand study its biological activity

2021 ◽  
Vol 14 (3) ◽  
pp. 299-305
Author(s):  
T. V. Oproshanska ◽  
O. P. Khvorost
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Growth Retardation ◽  
Raw Materials ◽  
Hydroxycinnamic Acids ◽  
Raw Material ◽  
Optimal Parameters ◽  
Antimicrobial And Antioxidant Activity ◽  
Sanguisorba Officinalis

The aim of the work is to experimentally determine the optimal parameters for obtaining a tincture of rhizomes with roots of Sanguisorba officinalis and to investigate its antimicrobial and antioxidant activity. Materials and methods. Rhizomes with roots of Sanguisorba officinalis were harvested in autumn 2019. When establishing the optimal parameters of the technology of obtaining tincture, the evaluation criterion was the number of the sum of polyphenols and the amount of hydroxycinnamic acids, which were determined by spectrophotometric method according to the methods of the State Pharmacopoeia of Ukraine 2.0. Antimicrobial activity was studied by agar diffusion and serial dilutions, antioxidant – in vitro using a stable radical 2,2-diphenyl-1-picrylhydrazyl (2,2-diphenyl-1-picrylhydrazyl – DPPH). Results. The optimal parameters for obtaining a tincture of rhizomes with roots of Sanguisorba officinalis was extraction method maceration at room temperature, raw material-finished product ratio 1:5, time 48 hours, extractant 50 % ethyl alcohol, the number of polyphenols, and the number of hydroxycinnamic acids in terms of dry raw materials not less than 4.0 % and 1.5 % respectively. The resulting tincture exhibits antimicrobial activity against microorganisms Bacillus subtilis ATCC 6633 (growth retardation 26.40 ± 1.04 mm), Staphylococcus aureus ATCC 25923 (growth retardation 24.60 ± 0.68 mm) and Pseudomonas aeruginosa ATCС 27853 (growth retardation 23.60 ± 0.68 mm) and at a dose of 0.02 ml showed antioxidant activity at the level of 70 %. Conclusions. The parameters of obtaining a tincture of rhizomes with roots of Sanguisorba officinalis were determined and its antimicrobial and antioxidant activity was studied.

scholarly journals The in vitro antimicrobial and antioxidant activity of leaves of medicinal plants with phytobiotic potential in animal production

2021 ◽  
Author(s):  
Roisbel Aroche ◽  
Xianren Jiang ◽  
Yordan Martínez ◽  
Román Rodríguez ◽  
Xilong Li ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Medicinal Plants ◽  
Secondary Metabolites ◽  
Moringa Oleifera ◽  
Psidium Guajava ◽  
Anacardium Occidentale ◽  
Morinda Citrifolia ◽  
Bacterial Strains ◽  
Antimicrobial And Antioxidant Activity

Abstract Little is known about which secondary metabolites are responsible for inhibiting pathogenic bacteria and reducing the pro-oxidant effect on the leaves of four medicinal plants used as phytobiotic in animal production. The aim of this study was to evaluate the antimicrobial and antioxidant activity of four medicinal plants (Anacardium occidentale, Psidium guajava, Morinda citrifolia and Moringa oleifera.) in vitro. A total of six bacterial strains were inoculated, then minimum bactericidal concentration (MBC) was evaluated in fine powder and minimum inhibitory concentration (MIC) and MBC were determined on the aqueous extract. Also, the in vitro antioxidant activity was evaluated through 1,1-diphenyl-2-picryl-hydrazyl, as well as the main secondary metabolites were identified and quantified by chromatographic analysis. The results showed that Anacardium occidentale and Psidium guajava leaves had higher antimicrobial activity against all bacterial strains. In addition, Morinda citrifolia inhibited S. aureus in the aqueous extract, although without in vitro bactericidal effect, while Moringa oleifera leaf did not show antimicrobial effect. All plants showed antioxidant capacity, standing out Anacardium occidentale and Psidium guajava. Mainly the leaves of Anacardium occidentale showed high concentrations of quercetin 3-O-glucoside-7-O-rhamnoside, kaempeferol-7-O-glucoside, quercetin, caffeic acid, and cinnamic acid. Apparently, the antimicrobial and antioxidant activity are due to the main polyphenolic compounds identified in medicinal plants (mainly Anacardium occidentale and Psidium guajava); however, further studies are necessary to elucidate the exact mechanism.

Sign in / Sign up

Export Citation Format

Share Document