scholarly journals Antioxidant, antiproliferative and antimicrobial activity of freeze-dried raspberry

2014 ◽  
pp. 99-116 ◽  
Author(s):  
Jelena Vulic ◽  
Aleksandra Velicanski ◽  
Dragana Cetojevic-Simin ◽  
Vesna Tumbas-Saponjac ◽  
Sonja Djilas ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activities ◽  
Total Content ◽  
Inhibition Zone ◽  
Diffusion Method ◽  
Breast Adenocarcinoma ◽  
Resonance Spectroscopy ◽  
Disk Diffusion Method ◽  
Freeze Dried

The main chemical composition, i.e. the total content of bioactive compounds (phenolics 2209.86 ? 70.32 mg GAE/100g FDR, flavonoids 831.87 ? 12.61 mg R/100g FDR and anthocyanins 144.55 ? 0.39 mg CGE/100g FDR), in freeze-dried raspberry (FDR) was evaluated spectrophotometrically. Vitamin C content was determined by HPLC analysis (88.81 ? 4.38 mg vit C/100g FDR). Antioxidant activities of FDR extract were evaluated spectrophotometrically on stable 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radicals and by electron spin resonance spectroscopy (ESR) method on hydroxyl radicals (?OH). EC50 values were evaluated. EC50 DPPH? was 0.127 ? 0.013 mg/ml, while EC50 ?OH was 1.366 ? 0.026 mg/ml. Antiproliferative activity of the FDR extract was evaluated in vitro in three human cell lines by colorimetric sulphorhodamine B (SRB) assay. The most pronounced effects were obtained in the breast adenocarcinoma cell line (MCF7). EC50 value was 395.07 ? 96.38 ?g/ml. Antimicrobial activity was determined by disk diffusion method. The FDR extract produced a clear inhibition zone (without visible colonies) only toward Staphylococcus aureus. The minimal inhibitory (MIC) and minimal bactericidal (MBC) concentrations of FDR extract were evaluated. The values MIC were in the range of 4.7 - 100 mg/ml, and of MBC in the range of 6.3 - > 100 mg/ml.

scholarly journals Evaluating the Antimicrobial Activity of Commercially Available Herbal Toothpastes on Microorganisms Associated with Diabetes Mellitus

2013 ◽  
Vol 14 (5) ◽  
pp. 924-929 ◽  
Author(s):  
Reena Kulshrestha ◽  
J Kranthi ◽  
P Krishna Rao ◽  
Feroz Jenner ◽  
V Abdul Jaleel ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Antimicrobial Activity ◽  
Dental Health ◽  
Antibacterial Properties ◽  
Antimicrobial Properties ◽  
Test Organism ◽  
Diffusion Method ◽  
Zone Of Inhibition ◽  
Disk Diffusion Method

ABSTRACT Aim The present study was conducted to evaluate the efficacy of commercially available herbal toothpastes against the different periodontopathogens. Materials and methods Six herbal toothpastes that were commonly commercially available were included in the study. Colgate herbal, Babool, Meswak, Neem active, Dabur red toothpastes were tested for the study whereas sterile normal saline was used as control. Antimicrobial efficacies of dentifrices were evaluated against Streptococcus mutans and Actinobacillus actinomycetemcomitans. The antimicrobial properties of dentifrices were tested by measuring the maximum zone of inhibition at 24 hours on the Mueller Hinton Agar media inoculated with microbial strain using disk diffusion method. Each dentifrice was tested at 100% concentration (full strength). Results The study showed that all dentifrices selected for the study were effective against the entire test organism but to varying degree. Neem active tooth paste gave a reading of 25.4 mm as the zone of inhibition which was highest amongst all of the test dentifrices. Colgate Herbal and Meswak dentifrices recorded a larger maximum zone of inhibition, measuring 23 and 22.6 mm respectively, compared to other toothpastes. All other dentifrices showed the zone of inhibition to be between 17 and 19 mm respectively. Conclusion The antibacterial properties of six dentifrices were studied in vitro and concluded that almost all of the dentifrices available commercially had antibacterial properties to some extent to benefit dental health or antiplaque action. How to cite this article Jenner F, Jaleel VA, Kulshrestha R, Maheswar G, Rao PK, Kranthi J. Evaluating the Antimicrobial Activity of Commercially Available Herbal Toothpastes on Microorganisms Associated with Diabetes Mellitus. J Contemp Dent Pract 2013;14(5):924-929.

scholarly journals In Vitro Antimicrobial Activity of Zodia (Evodia suaveolens) Leaf Extract on Pathogenic Agents Dragon Fruit Plant

Jurnal Biota ◽  
2020 ◽  
Vol 6 (2) ◽  
pp. 78-85
Author(s):  
Trio Ageng Prayitno ◽  
Nuril Hidayati
Keyword(s):  
Antimicrobial Activity ◽  
Leaf Extract ◽  
Plant Pathogens ◽  
Inhibition Zone ◽  
Diffusion Method ◽  
Leaf Extracts ◽  
Dragon Fruit ◽  
Fruit Plants ◽  
Pathogenic Agents

The use of antimicrobials from plant extracts has not been used optimally to control pathogenic agents in dragon fruit plants. The purpose of this research was to determine the antimicrobial activity of zodia (Evodia suaveolens) leaf extracts on pathogenic agents of dragon fruit plants in vitro. The research method is laboratory research with Completely Randomized Design (CRD). The antimicrobial concentrations of zodia (E. suaveolens) leaf extract used six types including 50%, 60%, 70%, 80%, 90%, and 100% with four replications. The research sample was the leaf of zodia (E. suaveolens), Pseudomonas aeruginosa and Fusarium oxysporum strain Malang. Test the antimicrobial activity of zodia (E. suaveolens) leaf extracts on the growth of P. aeruginosa and F. oxysporum using the disc-diffusion method and wells method. The research instrument was used the observation sheet of the diameter of inhibition zone indicated by the clear zone. The diameter of inhibition zone data were analyzed using the One Way ANOVA test. The results showed that the antimicrobial activity of zodia (E. suaveolens) leaf extract significantly inhibited the growth of P. aeruginosa and F. oxysporum (P <0.05). These results recommend zodia (E. suaveolens) leaf extract as an antimicrobial agent for dragon fruit plant pathogens.

scholarly journals SYNTHESIS AND CHARACTERIZATION OF CYCLOHEXANE-1,3-DIONE DERIVATIVES AND THEIR IN SILICO AND IN VITRO STUDIES ON ANTIMICROBIAL AND BREAST CANCER ACTIVITY

2019 ◽  
pp. 311-320 ◽  
Author(s):  
RAJA CHINNAMANAYAKAR ◽  
EZHILARASI MR ◽  
PRABHA B ◽  
KULANDHAIVEL M
Keyword(s):  
Breast Cancer ◽  
Antimicrobial Activity ◽  
Anticancer Activity ◽  
Mtt Assay ◽  
In Silico ◽  
Biologically Active ◽  
Diffusion Method ◽  
Breast Adenocarcinoma ◽  
In Silico Docking

Objective: The objective of this study was to evaluate in silico and in vitro anticancer activity for synthesized cyclohexane-1,3-dione derivatives. Methods: The new series of cyclohexane-1,3-dione derivatives were synthesized based on the Michael addition reaction. Further, the structures of the synthesized compounds were confirmed by Fourier-transform infrared spectroscopy, 1H nuclear magnetic resonance (NMR), and 13C NMR spectral data. Then, the in silico molecular docking studies were carried out using AutoDock tool version 1.5.6 and AutoDock version 4.2.5.1 docking program. The antimicrobial activity was carried out using the agar disk diffusion method, and the in vitro anticancer activity was performed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay for the synthesized compound. Results: In silico docking study, compound 5c showed good binding score and binding interactions with selected bacterial proteins and breast cancer protein. Further, compound (5a-5h) was tested for their antimicrobial activity and compound 5c was only tested for anticancer activity (human breast adenocarcinoma 3,4-methylenedioxyamphetamine-MB-231 cell line). Compound 5c was found to be the most active one of all the tested compounds. In the MTT assay compound, 5c showed the LC50 value of 10.31±0.003 μg/ml. In antimicrobial activity, the minimum inhibitory concentration of compound 5c is 2.5 mg/ml. Conclusion: An efficient synthesis of biologically active cyclohexane-1, 3-dione derivatives has been developed.

scholarly journals Antimicrobial Activity of two Mentha Species Essential Oil and its Dependence on Different Origin and Chemical Diversity

2018 ◽  
Vol 13 (8) ◽  
pp. 1934578X1801300 ◽  
Author(s):  
Mária Pl'uchtová ◽  
Teresa Gervasi ◽  
Qada Benameur ◽  
Vito Pellizzeri ◽  
Daniela Grul'ová ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Essential Oil ◽  
Inhibition Zone ◽  
Chemical Diversity ◽  
Diffusion Method ◽  
Salmonella Spp ◽  
Disk Diffusion Method ◽  
Gram Positive Bacteria ◽  
Growth Inhibition Zone

Genus Mentha presents group of plants which are the most studied in family Lamiaceae. Aboveground parts are used for different purposes in pharmacy, food industry or confectionery. Most important is natural product extracted from leaves - essential oil (EO). The aim of presented experiment was to demonstrate different chemotype and compare antibacterial activity of two Mentha species EO. Plant samples were obtained from various environments – from Slovakia and from Italy. Dominant compounds were determined by GC/MS. The results showed high amount of menthol and menthone in tested Slovak peppermint EO. On the other hand, carvone and 1,8-cineole were determinate as dominant compounds in Italian spearmint EO. The antimicrobial activity of the EO was investigated by disc diffusion and broth micro dilution methods. EO was evaluated for their antibacterial activity against 7 microorganisms: Enterobacter cloacae, Salmonella spp., Klebsiella pneumoniae, Escherichia coli, Staphylococcus aureus, Streptococcus pyogenes. The determination results of antibacterial activity by agar disk diffusion method ranged from 7 to 14 mm of the growth inhibition zone. MIC of tested mint EO varied from 0.625 to 2.5 μg/mL. In addition, both EO showed relatively the same antibacterial activity against the selected Gram-negative bacteria. However, there is a variation in the antibacterial activity against Gram-positive bacteria.

scholarly journals Alkaline-based curcumin extraction from selected zingiberaceae for antimicrobial and antioxidant activities

2019 ◽  
Vol 48 (4) ◽  
pp. 293-300 ◽  
Author(s):  
Rashidi Othman ◽  
Mohd Akram Abdurasid ◽  
Noraini Mahmad ◽  
Nurrulhidayah Ahmad Fadzillah
Keyword(s):  
Ethyl Acetate ◽  
Extraction Method ◽  
Antioxidant Activities ◽  
Inhibition Zone ◽  
Single Peak ◽  
Diffusion Method ◽  
Powdered Sample ◽  
Acetate Solution ◽  
Content Type ◽  
Freeze Dried

Purpose The purpose of this paper is to extract, characterise and quantify curcumin from selected Zingiberaceae of “kunyit” or turmeric (Curcuma longa), “temu lawak” or Javanese turmeric (Curcuma xanthorrhiza), “temu pauh” (Curcuma mangga), “lempoyang” (Zingiber zerumbet) and “bonglai” (Zingiber cassumunar) using alkaline and chemical-based extraction method for antimicrobial and antioxidant activities. Design/methodology/approach Through the alkaline-based extraction method, all parts of rhizome samples were freeze-dried for 72 h before grounded into a fine powder and kept at −20°C. The powdered sample (0.1 g) was weighed and placed in a 50 mL tube. About 20 mL of 2 M NaOH solution was added into the tube. The solution was allowed to stand for 30 min. Then, 20 mL of ethyl acetate was added into the tube. The solution was mixed well then centrifuged at 13,500 rpm for 3 min. The upper layer was collected using a pipette. The process was repeated until the upper layer became almost colourless. The collected ethyl acetate solution was concentrated using a rotary evaporator to remove the ethyl acetate from the extracted compound. The concentrated curcumin was placed in a universal bottle, which was then dried from the remaining ethyl acetate using nitrogen drying process. The dried curcumin was then stored inside the freezer at −20ºC. The antimicrobial activities were using agar diffusion method against bacterial and fungi, while the antioxidant activity was evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging assay. Findings All the samples successfully showed a single peak (curcumin) that gained from the high-performance liquid chromatography (HPLC) chromatogram analysis (at 425 nm) using the alkaline-based extraction method and the highest curcumin content was in turmeric (12.95 ± 1.07mg/g DW). At 10.0 mg/mL curcumin concentration, the best antibacterial activity was against on methicillin-resistant staphylococcus aureus (MRSA) with 7.50 ± 0.71 mm inhibition zone, while the best antifungal activity was against on Aspergillus niger with 8.00 ± 0.41 mm inhibition zone. The DPPH antioxidant test resulted in the highest inhibition (110.41 per cent) was at 0.25 mg/mL curcumin concentration. Originality/value Through HPLC analysis, all samples successfully showed a single peak of curcumin at 425 nm. The total carotenoid determination from turmeric revealed that the samples content was substantially higher using alkaline-based extraction (18.40 ± 0.07 mg/g DW) compared to chemical-based extraction (9.42 ± 0.20 mg/g ± SD).

scholarly journals Comparison of Techniques and Solvents on the Antimicrobial and Antioxidant Potential of Extracts from Acacia dealbata and Olea europaea

Antibiotics ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 48 ◽  
Author(s):  
Anabela Borges ◽  
Helena José ◽  
Vera Homem ◽  
Manuel Simões
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Capacity ◽  
Plant Extracts ◽  
Olea Europaea ◽  
Antioxidant Activities ◽  
Extraction Yield ◽  
Diffusion Method ◽  
Disk Diffusion Method ◽  
Acacia Dealbata ◽  
Olea Europaéa

Ethnopharmacological use of plant natural extracts has been known since ancient times. The optimization of plant molecule extraction is fundamental in obtaining relevant extraction yields. The main purpose of this study was to understand the role of different extraction techniques (solid-liquid, ultrasound, Soxhlet, and microwave) and solvents (water, methanol, ethanol, acetone, dichloromethane, and hexane) on the antimicrobial and antioxidant activities of extracts from Olea europaea (olive) and Acacia dealbata (mimosa). Crude plant extracts were evaluated for their antimicrobial activity against Staphylococcus aureus and Escherichia coli by the disk diffusion method. The antioxidant capacity of the extracts was determined by ABTS (2,2-azinobis (3-ethyl-benzothiazoline-6-sulfonic acid)) and DPPH (2,2-diphenyl-1-picrylhydrazyl) methods. In terms of extraction yield, ultrasound extraction and the solvents methanol, acetone (O. europaea) or water (A. dealbata) were found to be the best options. However, ethanol and acetone proved to be the best solvents to extract compounds with antimicrobial activity and antioxidant capacity, respectively (regardless of the extraction method employed). Soxhlet and microwave were the best techniques to extract compounds with antimicrobial activity, whereas any of the tested techniques showed the ability to extract compounds with antioxidant capacity. In most of the cases, both plant extracts (mimosa and olive) were more efficient against S. aureus than E. coli. In the present study, both mimosa and olive leaf crude extracts proved to have antimicrobial and antioxidant activities, increasing the demand of these natural products as a source of compounds with health benefits.

Evaluation of Antibacterial Activity of Combined Plant Extract of Pyracantha crenulata and Zanthoxylum armatum

2020 ◽  
Vol 2 (29) ◽  
pp. 32-36
Author(s):  
Semwal Amit Negi Sweta
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Ethanolic Extract ◽  
Diffusion Method ◽  
Moderate Activity ◽  
Aqueous Extracts ◽  
Disk Diffusion Method ◽  
Zanthoxylum Armatum ◽  
Plant Extraction

Abstract-Medicinal plants represent an essential source of drugs and have played an important role in healthcaresystem.PyracanthacrenulataandZanthoxylum armatumhave been used as traditional medicine. The main aim of the study was to find the antibacterial activity of the selected plants against bacterialspecies:E.coliandPseudomonasaeruginosa. The solvents used for plant extraction were hexane, chloroform, ethanol and aqueous. The in vitro antimicrobial activity was performed by Agar disk diffusion method. The hexane and aqueous extracts showed moderate activity whereas theethanolicextractsshowedasignificantantibacterial activity. In the study Tetracycline was used as standard. The combined ethanolic extract of both the selected plant showed the synergistic effect on the bacterial strain tested. This leads to the conclusion that the combined effect can have possible application in the development of products as antimicrobial.

scholarly journals Inhibitory activity of crude bacteriocin produced by lactic acid bacteria isolated from dadih against Listeria monocytogenes

2020 ◽  
Vol 21 (4) ◽  
Author(s):  
Usman Pato ◽  
YUSMARINI YUSUF ◽  
SHANTI FITRIANI ◽  
NIA NAIDYA JONNADI ◽  
MIMI SRI WAHYUNI ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Inhibition Zone ◽  
Diffusion Method ◽  
Antimicrobial Compounds ◽  
Disk Diffusion Method ◽  
Food Borne ◽  
Paper Disk ◽  
Natural Preservatives

The use of natural preservatives called bacteriocin derived from lactic acid bacteria (LAB) is one way of preventing food from being contaminated by pathogenic microorganisms such as L. monocytogenes (LM). The aims of this study were to evaluate the ability of LAB isolated from dadih to inhibit the growth of LM and to obtain the antimicrobial components that play a role in inhibiting the growth of LM. The antimicrobial activity of the supernatant obtained from 12 strains of dadih LAB was determined using the paper disk diffusion method. The results showed that the supernatant from the 12 LAB strains was able to inhibit the growth of LM with various inhibition zones. However, out of the 12 LABs, only 9 strains were found to have an inhibition zone of more than 3.5 mm.  The antimicrobial compounds of 9 strains were tested and it was found that the antimicrobial compounds of strains R-8, R-14 and R-49 were derived from lactic acid. In addition, 6 strains namely R-43, R-32, R-19, R-55, R-45 and R-41 were derived from bacteriocin based on their sensitivity to pH, heat and enzyme treatments. Crude bacteriocin derived from 6 LAB strains inhibited the growth of LM, and the highest antimicrobial activity was obtained in Streptococcus faecalis subsp. liquefaciens R-55 with an average inhibition zone of 13.87 mm. Bacteriocin produced by strain R-55 can be used as natural preservatives for the prevention of food-borne disease caused by LM.

scholarly journals In Vitro Testing of Salicylanilide Derivatives Against Some Fungal and Bacterial Strains

2019 ◽  
Vol 70 (4) ◽  
pp. 1496-1499
Author(s):  
Ioana Maria Carmen Ienascu ◽  
Diana Obistioiu ◽  
Iuliana Maria Popescu ◽  
Mariana Nela Stefanut ◽  
Osser Gyongyi ◽  
...  
Keyword(s):  
Susceptibility Testing ◽  
Inhibition Zone ◽  
Diffusion Method ◽  
Bacterial Strains ◽  
Disk Diffusion Method ◽  
Dental Office ◽  
Inhibition Zones ◽  
Benzamide Derivatives ◽  
Effective Compound

In the dental office, disinfection and sterilization are a matter of utmost importance for both the physician, the medical staff and the patient. Twelve N-(2-bromo-phenyl)-2-hydroxy-benzamide and N-(4-bromo-phenyl)-2-hydroxy-benzamide derivatives were synthesized and tested for antimicrobial activity against 6 bacterial and 2 fungal strains using the Disk diffusion method for susceptibility testing. The obtained results indicated that the N-(2-bromo-phenyl)-2-hydroxy-benzamide derivatives were more active against the tested microbes, inhibition zones of 6-12 mm being obtained, although the most effective compound against S. pyogenes proved to be N-(4-bromo-phenyl)-2-hydroxy-benzamide (14 mm inhibition zone). The tested compounds presented no effect against S. aureus, S. flexneri, S. typhimurium and C. parapsilopsis at the tested concentration.

scholarly journals In vitro antimicrobial screening of Lycoperdon lividium and determination of the ethanol extract composition by gas chromatography/mass spectrometry

2016 ◽  
Vol 11 (2) ◽  
pp. 389 ◽  
Author(s):  
Kerem Canli ◽  
Ergin Murat Altuner ◽  
Ilgaz Akata ◽  
Yavuz Turkmen ◽  
Ugur Uzek
Keyword(s):  
Antimicrobial Activity ◽  
Video Clip ◽  
Ethanol Extract ◽  
Disk Diffusion ◽  
Gas Chromatography Mass Spectrometry ◽  
Diffusion Method ◽  
Disk Diffusion Method ◽  
Disk Diffusion Test ◽  
Wide Range

<p class="Abstract">The aim of this study was to investigate the antimicrobial activity of <em>Lycoperdon lividium</em> against 17 bacterial and 1 fungal strains and analyse the composition of ethanol extracts by GC/MS. The in vitro antimicrobial activity of <em>L. lividium</em> extracts having 15 mg/mL concentration was assessed against a wide range of strains by disk diffusion method. The ethanol extract of <em>L. lividium</em> had antimicrobial activity against several microorganism tested, but it was active especially against <em>S. carnosus</em>. The results obtained herein indicate that <em>L. lividium</em> contains several active metabolites.</p><p class="Abstract">Video clip</p><p><a href="https://youtube.com/v/ymWOQBeNN84">Disk diffusion test</a>: 7 min 11 sec</p>

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