scholarly journals Antibacterial and Antioxidant Activity of Rhodomyrtus Tomentosa and Cinnamomum Zeylanicum Crude Extracts

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Tran Thi Quynh Lan ◽  
Vu Manh Khiem ◽  
Nguyen Van Tin
Keyword(s):  
Antibacterial Activity ◽  
Crude Extract ◽  
Antioxidant Activities ◽  
Inhibition Zone ◽  
Antioxidant Compounds ◽  
Crude Extracts ◽  
Layer Chromatography ◽  
Antibacterial And Antioxidant Activity ◽  
Rhodomyrtus Tomentosa

The aim of this  study was to investigate the extraction method for R. tomentosa and C. zeylanicum leaves and the evaluation of antibacterial and antioxidant activities of crude extracts. The results of the study showed that the active ingredients of crude extracts were  clearly separated by Thin-layer chromatography and the presence of rhodomyrtone in R. tomentosa crude extract and cinnamaldehyde in C. zeylanicum crude extract. R. tomentosa crude  extract was  antibacterial activity against Staphylococcus aureus with 13.1 mm of inhibition zone, but is not effective against Salmonella Typhimurium. C. zeylanicum leaf extract did not show antibacterial activity on both S. aureus and S. Typhimurium. At a dilution of 1/2 of the R. tomentosa crude extract can completely inhibit S. aureus growth. This study also indicated the presence of antioxidant compounds such as flavonoids, tannins, phenols and terpenoids in C. zeylanicum and R. tomentosa crude extracts. The results showed that R. tomentosa and C. zeylanicum crude extracts should be used as a biotherapy alternative to antibiotic therapy. However, further study would be needed to investigate the antibacterial activity of crude extracts in vivo. 

scholarly journals Antibacterial and antioxidant activities of Homalomena josefii P.C. Boyce and S.Y. Wong rhizome extract

Food Research ◽  
2020 ◽  
Vol 4 (6) ◽  
pp. 2122-2131
Author(s):  
K.R. Rinai ◽  
I.S. Ismail ◽  
Son R. ◽  
C.Y. New ◽  
Y. Rukayadi
Keyword(s):  
Antibacterial Activity ◽  
Methanolic Extract ◽  
Antioxidant Activities ◽  
Biological Activities ◽  
Antioxidant Properties ◽  
Inhibition Zone ◽  
Total Phenolic ◽  
Crude Extracts ◽  
Snake Bites ◽  
Time Kill

The rhizome of Homalomena josefii P.C. Boyce and S.Y. Wong is commonly used in Borneo folk medicine. It is potent in treating stomach aches, headaches, and snake bites. The lack of information about their biological activities leads to an investigation to determine its antibacterial and antioxidant activities of H. josefii rhizome extract. This study aimed to ascertain antibacterial activity in opposition to foodborne pathogens namely Bacillus megaterium ATCC14581, Bacillus pumilus ATCC14884, Proteus mirabilis ATCC21100 and Klebsiella pneumoniae ATCC13773 and its antioxidant properties of H. josefii rhizome extracts. Extraction of dried powdered H. josefii rhizome was carried out through the maceration method using methanol as a solvent to produce crude extracts. The crude extracts were then tested for antibacterial and antioxidant activities. The antibacterial activity was conducted in terms of disc diffusion assay (DDA), minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and time-kill assay. All were performed following the Clinical and Laboratory Standard Institute (CLSI) procedure to ensure liable results. Total phenolic compounds (TPC) and 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) scavenging assay were used to stimulate the antioxidant activity. The results show that DDA inhibition zone of the methanolic extracts ranged from 9.00±0.58 to 10.00±0.00 mm. The extract was able to inhibit the growth of all tested bacteria with MICs value ranging from 0.31 to 5.00 mg/mL. Meanwhile, the extract is able to kill all tested bacteria with MBC values that range from 0.63 to 5.00 mg/mL. Time-kill assay curve analysis results showed that the extract was able to completely kill the bacterial growth at 4 × MIC for 4 hours. The total phenolic compound (TPC) of methanolic extract was 435.138 mg GAE/g and IC50 of the extract was 11.809 μg/mL. In conclusion, the methanolic extract of H. josefii rhizome extract exhibited antibacterial and antioxidant activities, thus it can further be developed as a natural preservative.

scholarly journals Sensitivity Testing of Ciplukan (Physalis angulata) Rod Crude Extract on The Bacterium Pseudomonas fluorescens In Vitro

2019 ◽  
Vol 10 (1) ◽  
pp. 24-30
Author(s):  
Ion Tarsardo Sianturi ◽  
Arief Prajitno ◽  
Ellana Sanoesi
Keyword(s):  
Experimental Method ◽  
Crude Extract ◽  
Inhibition Zone ◽  
Natural Material ◽  
Sensitivity Testing ◽  
Randomized Design ◽  
Physalis Angulata ◽  
Completely Randomized Design

Diseases is a problem in aquaculture, one of which is the diseases caused by the bacteriumP.fluorescens. Antibiotics and chemicals materials themselves can give the bacterium resistance and cause harm for the environment. One alternative that can be done is using a natural material, namely the rod of ciplukan (p. angulata). The purpose of this research was to explain the effect of P. angulata on the growth of p. fluorescens. The method which can be use is experimental method by using the research design of completely randomized design (ral) with 5 treatment and 2 control with 3 repetitions. The results showed that extract of P. angulata at various dose (6,67 ppt, 13,33 ppt, 19,99 ppt, 26,66 ppt and 33,33 ppt) exhibited anti-P. fluorescens activity with inhibition zone diameters in the range of (4,06±0,07 mm - 9,63±1,61 mm). Increashing extract dose lead to increased the inhibition zone. The extract dose of 33,33 ppt exhibited best anti-P. fluorescens activity in this research. The research results show that P. angulata is proven to be able to inhibit the P. fluorescens, but to prove the effectiveness of this material, an in vivo is required.

scholarly journals ANTIBACTERIAL ACTIVITY AGAINST BACILLUS SUBTILIS AND ANTIOXIDANT PROPERTIES OF METHANOL EXTRACTS FROM GARCINIA LATISSIMA MIQ. LEAVES

2018 ◽  
Vol 10 (1) ◽  
pp. 24 ◽  
Author(s):  
Neneng Siti Silfi Ambarwati ◽  
Berna Elya ◽  
Amarila Malik ◽  
Muhammad Hanafi ◽  
Hanita Omar
Keyword(s):  
Antibacterial Activity ◽  
Bacillus Subtilis ◽  
Crude Extract ◽  
Inhibitory Concentration ◽  
Antioxidant Activities ◽  
Wide Spectrum ◽  
Antioxidant Properties ◽  
Antibacterial Activities ◽  
Positive Control ◽  
Inhibition Zones

Objective: The objective of this study was to identify fractions with the highest antibacterial activity against Bacillus subtilis and to determineantioxidant activities and establish the chromatographic fractions as candidate antibacterial and antioxidant agents.Methods: Extracts were fractionated using column chromatography, and antibacterial activities were assayed by the analyses of inhibition zones andbioautography, as well as by broth microdilution techniques. Antioxidant activities were evaluated using the 2,2-diphenyl-1-picrylhydrazyl (DPPH)assay.Results: The strongest antibacterial activity against B. subtilis (ATCC 6633) was observed with fractions B and C obtained in this research, witha minimum inhibitory concentration value of 312.5 μg/mL. The effective percentage (EP) value of crude extract at 10 μg/mL was 29.47±2.01%.Fractions C and D had greater EP values than the crude extract, whereas fraction D had the highest scavenging activity against DPPH free radicals(37.73±1.44%) when used at 10 μg/mL. The half effective concentration of the extract was 23.40 μg/mL, whereas that of the most active fraction Dwas 19.38 μg/mL and quercetin as positive control was 3.72 μg/mL.Conclusion: The present data confirm that fractions of methanol extract from Garcinia latissima Miq. leaves possess antibacterial and antioxidantactivities. These observations may facilitate the development of antimicrobial phytomedicines with a wide spectrum of activities and standardizedantioxidant properties.

scholarly journals Evaluation of Antibacterial and Antioxidant activity of methanol crude extract of Aspilia africana leaves: an in vitro approach

2020 ◽  
Author(s):  
Adepoju Oluwarinu ◽  
Omololu-Aso
Keyword(s):  
Crude Extract ◽  
Antioxidant Activities ◽  
Diffusion Method ◽  
Klebsiella Pneumonia ◽  
Rapid Healing ◽  
Healing Of Wounds ◽  
Spectrum Activity ◽  
Antibacterial And Antioxidant Activity ◽  
Leaf Part

ABSTRACTAspilia africana (Compositae) is one of such plants considered of great importance in pharmacopeia of traditional medicine. Its leaf is widely used in ethnomedicinal practices in tropical Africa because of its ability to stop bleeding and promote rapid healing of wounds. This study was carried out on the leaf part to determine its antimicrobial and antioxidant potentials of its leaf methanol extract. The methanolic extract of the leaf was subjected to preliminary phytochemical screening and it indicated the presence of saponins, tannin, resin, phlobatannins, and phenols. The in-vitro antibacterial test of the methanol crude extract using agar well diffusion method showed broad-spectrum activity with minimum bactericidal concentration of 30, 75 mg/mL for Klebsiella pneumonia, and Bacillus subtilis respectively. In-vitro antioxidant activities using 2, 2–diphenyl-1-picrylhydrazyl assay indicate that the methanol leaves extract had higher activity than of 92.23 µg/mL compared to standard drugs (Ascorbic acid 1.07mg/mL) and IC50 at 4.66. This study concluded that Aspilia africana methanol crude extract exhibits dosage-dependent antioxidant potential and could be further explored if it’s are in pure form.

scholarly journals Phytopharmacological Evaluation of Alcoholic Extract of Berberis aristata Leaf in the Treatment of Gastric Ulcer

2020 ◽  
Vol 13 (1) ◽  
pp. 1-5
Author(s):  
Ratnaker Singh ◽  
Y. Trilochana
Keyword(s):  
Acute Toxicity ◽  
Crude Extract ◽  
Antioxidant Activities ◽  
Ethanolic Extract ◽  
Total Phenolic ◽  
Antiulcer Activity ◽  
Alcoholic Extract ◽  
Dose Dependent

For over a century, peptic ulcer has been one of the most common gastrointestinal tract (GIT) disorder. There are number of drugs are now available for treatment. Drugs of herbal origin reduce the offensive factors and have proved to be safe, clinically effective, relatively less expensive, globally competitive, and with better patient tolerance.This study was performed to assess the anti-ulcer activity on different parts of B.aristata. Apart from that, acute toxicity, qualitative chemical analysis, total phenolic content (TPC), total flavonoid content(TFC) and in vitro antioxidant activities were evaluated. The potentially active plant part was selected for screening as gastro protective, in vivo antioxidant and antisecretory activities in ulcerated rats.The 50% ethanolic extract of B. aristata were subjected to preliminary phytochemical screening, estimation of TFC and TPC. The crude extract from the leaves of B. aristata gave best antiulcer activity among flower and stem. In acute toxicity studies, the administration of the crude extract of B. aristata leaves did not reveal any adverse effects or toxicity in rats at fourteen days observations.The results of these studies have shown that ethylexract of B.aristata leaf (EEBAL) produced a significant dose dependent ulcerprotective, antioxidant and antisecretory activity by blocking the activity of proton pump, protecting from antioxidants produced during stress induced ulcer and by enhancing glycoprotein levels.

scholarly journals ANTIBACTERIAL ACTIVITY OF ETHANOL CRUDE EXTRACTS OF WHOLE PLANT OF THE UGANDAN PHYLLANTHUS AMARUS SCHUMACH. & THONN AGAINST SHIGELLA DYSENTERIAE

2019 ◽  
Vol 2 (2) ◽  
pp. 33
Author(s):  
Magimbi Arthur ◽  
Adamu Almustapha Aliero ◽  
John Odda
Keyword(s):  
Antibacterial Activity ◽  
Crude Extract ◽  
Standard Error ◽  
Shigella Dysenteriae ◽  
Diffusion Method ◽  
Dilution Method ◽  
Phyllanthus Amarus ◽  
Zone Of Inhibition ◽  
Crude Extracts ◽  
Whole Plant

Apart from being used for the treatment of malaria fevers, mono-herbal preparation of Ugandan Phyllanthus amarus is widely by local communities in central Uganda, for treatment of bacterial dysentery.  However, efficacy studies regarding the mono-herbal extracts of the Ugandan Phyllanthus amarus against Shigella dysenteriae is lacking. The present study was aimed at determined the antibacterial activity of aqueous ethanol crude extracts of whole plant of Phyllanthus amarus against Shigella dysenteriae. Whole plant of Phyllanthus amarus was collected from Wakiso district central of Uganda. Different concentrations (128µg/ml, 256µg/mL-1 and 512µg/ mL-1) of the ethanol crude extract of whole plant of Phyllanthus amarus were tested against Shigella dysenteriae using agar well diffusion method. Minimum inhibitory concentration (MIC) was determined using broth tube dilution method while Minimum bactericidal concentration (MBC) was determined by culture method. The results of this study showed that, Shigella dysenteriae was sensitive to different concentrations (128µg/ mL-1, 256µg/ mL-1and 512µg/ mL-1) of ethanol crude extract of whole plant of Phyllanthus amarus possessed antibacterial against Shigella dysenteriae with mean and standard error mean zone of inhibition ranging from 11.5±0.5 to 13.5±0.5mm, while the positive control had mean and standard error mean zone of inhibition 24.5±0.5mm. The MIC and MBC of the ethanol crude extract of whole plant of Phyllanthus amarus against Shigella dysenteriae was found to be 32µg/ml and 64µg/ml respectively. This study found that the whole plant of phyllanthus amarus of ethanol crude extract was active against Shigella dysenterie.  Further study should be carried out test whole plant Phyllanthus amarus crude extract on different microorganisms that cause dysentery to find out its activity against them and spectrum, determine lead compound in the whole plant Phyllanthus amarus crude extract responsible for the anti-microbial activity against Shigella dysenteriae and also determine the mechanism of action by which this plant crude extract inhibits Shigella dysenteriae.

scholarly journals Bioprospection of Enggano Macroscopic Fungi as Antibacterial and Antioxidant Agents

2021 ◽  
Vol 20 (2) ◽  
pp. 201-210
Author(s):  
Evana Evana ◽  
Kartika Dyah Palupi ◽  
Listiana Oktavia ◽  
Ahmad Fathoni
Keyword(s):  
Antioxidant Activity ◽  
Antibacterial Activity ◽  
Antioxidant Properties ◽  
Antioxidant Compounds ◽  
Activity Assay ◽  
Tropical Country ◽  
Antioxidant Agents ◽  
Ic50 Values ◽  
Weak Activity ◽  
Antibacterial And Antioxidant Activity

Macrofungi in Indonesia have not been widely studied for their pharmacological activity, especially as a source of antibacterial and antioxidant properties, even though Indonesia as a tropical country has quite a high diversity of macrofungi. This study aims to reveal the potential of macrofungi from the Enggano forest as a source of antibacterial and antioxidant compounds. Four types of macrofungi were collected and their metabolites were extracted using four types of organic solvents. Antibacterial and antioxidant activity assay of the extract was carried out using the TLC Bioautography method. From the sixteen macrofungal extracts, there is one extract that has the strongest antibacterial activity compared to the others, namely n-hexane Coriolopsis polyzona. It showed moderate antibacterial activity against Staphylococcus aureus and Escherichia coli with MIC values of 256–128 μg/mL, respectively. Meanwhile, the antioxidant activity of the macrofungal extracts showed weak activity with IC50 values of 3080–7370 μg/mL (AAI values of 0.033–0.079).

scholarly journals Antibacterial Activity of Buah Merah (Pandanus conoideus Lam.) Against Bacterial Oral Pathogen of Streptococcus sanguinis ATCC10556, Streptococcus mutans ATCC 25175, and Enterococcus faecalis ATCC 29212: An in Vitro Study

2020 ◽  
Vol 14 (1) ◽  
pp. 113-119 ◽  
Author(s):  
Lisda Damayanti ◽  
Ida Ayu Evaangelina ◽  
Avi Laviana ◽  
Yetty Herdiyati ◽  
Dikdik Kurnia
Keyword(s):  
Antibacterial Activity ◽  
Ethyl Acetate ◽  
Methanol Extract ◽  
Synergistic Effects ◽  
In Vitro Study ◽  
Inhibition Zone ◽  
Oral Bacteria ◽  
Inhibition Zones

Background: Caries and periodontitis are dental diseases caused by bacteria of S. sanguinis, S. mutans, and E. faecalis with three main etiological factors of the host, substrate, and time. Objective: This study proposed to investigate the antibacterial effects of Buah Merah (Pandanus conoideus Lam.) against oral bacteria of E.faecalis, S. mutans, and S. sanguinis. Materials and Methods: The Buah Merah was extracted with different solvents to yield n-hexane, ethyl acetate, methanol, and H2O extracts. The concentrations of single and mixture extracts were adjusted for antibacterial assay against bacteria of E. faecalis, S. mutans, and S. sanguinis strains through agar well diffusion assay with chlorhexidine, fosfomycin, and quercetin used as positive controls. Results: The ethyl acetate extract showed highest antibacterial activity against three oral bacterial of E. faecalis, S. mutans, and S. sanguinis with inhibition zones values of 9.3, 12.3, and 17.9 mm at 40%, respectively, together with their MIC and MBC values of 1250 & 2500, 0.312 & 0.625, and 0.312 & 0.625 ppm, respectively. For the formulation of extracts, combinations samples test gave various effects to different bacteria, with the best activity showed by methanol-ethyl acetate (M-Ea) extracts against S. mutans with an inhibition zone of 16.25 mm at 40 ppm. The strong and synergistic effect of methanol extract against S. mutans was supported by inhibition zones of the formulation of methanol extract-fosfomycin which showed an inhibition zone of 25.9 mm at 10 ppm. Conclusion: The extracts of Buah Merah demonstrated antibacterial activity against oral bacteria of E. faecalis, S. mutans, and S. sanguinis and gave important information for further in vivo clinical studies to determine the exact dosages and its effectiveness in practical application. These results prove the antimicrobial effects of Buah Merah extracts as alternative natural drugs with synergistic effects of active constituents.

scholarly journals ASSESSMENT OF ANTIMICROBIAL AND ANTIOXIDANT ACTIVITIES OF AMOMUM SUBULATUM ROXB. OF NEPAL

2017 ◽  
Vol 10 (4) ◽  
pp. 95
Author(s):  
Bimala Subba ◽  
Tank Raj Seling ◽  
Ram Chandra Kandel ◽  
Ganga Prasad Phuyal
Keyword(s):  
Antioxidant Activity ◽  
Antibacterial Activity ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Antibacterial Drug ◽  
Traditional Use ◽  
Low Altitude ◽  
Amomum Subulatum ◽  
Antimicrobial And Antioxidant Activity ◽  
Antibacterial And Antioxidant Activity

Objective: The present study was designed to study and compare the antibacterial and antioxidant activity of methanol extracts of Amomum subulatum Roxb. seeds collected from two different regions of Nepal.Methods: Antioxidant activity was determined by 1, 1-diphenyl-2-picrylhydrazyl assay and Antibacterial activity was measured by agar well-diffusion method.Results: Results showed that both sample extracts had interesting antibacterial activity against all test microorganisms and had remarkable radical scavenging potential to be used as an antioxidant. Sample B (i.e., collected from high altitude Taplejung district) exerted comparative quit higher antimicrobial and antioxidant activity than the Sample A (i.e., is collected from low altitude Panchthar district). However, the standard antibacterial drug Tetracycline exhibits superior activity than the extracts.Conclusions: The results suggest that both samples (i.e., seed extract of A. subulatum Roxb.) possess almost similar moderate antibacterial and antioxidant activity in comparison to standards which justifies the traditional use of this plant.Keywords: Extract, Cardamom, Activity, Medicinal plants, Seeds, Bacillus pumilus.

Effect of Extraction Procedure on Yield, Phytochemical Profile and Antibacterial Activity of Fenugreek Seed (Trigonella foenum-graecum) Crude Extracts

2020 ◽  
Author(s):  
R. Chalghoumi ◽  
S. Mabrouki ◽  
H. Abdouli ◽  
J. E. Line
Keyword(s):  
Antibacterial Activity ◽  
Extraction Procedure ◽  
Inhibition Zone ◽  
Inhibitory Effect ◽  
Solvent Ratio ◽  
Trigonella Foenum Graecum ◽  
Fenugreek Seed ◽  
Crude Extracts ◽  
Phytochemical Profile ◽  
Effect On Yield

Background: Fenugreek (Trigonella foenum-graecum) is a medicinal plant known for its various pharmacological properties, including its antibacterial activity. The purpose of this study was to assess the extraction procedure effect on yield, phytochemical profile and antibacterial activity of fenugreek seed crude extracts. Methods: The extraction procedure of components from fenugreek seed possessing an antibacterial potential was first optimized. Extracts at the highest yield were analyzed for phytocomponents and their bacterial growth inhibitory effect was assessed by determining the diameter of the inhibition zone (IZ) and the minimum inhibition concentration (MIC). Results: Optimum conditions for highest yield of extract (270,78 mg/g) are as follows: solvent (water), substrate-solvent ratio (1:10), and extraction time (72 hours). Phytochemical screening revealed the presence of the major compounds known to have an antibacterial activity such as tannins and flavonoids in the aqueous and methanol extracts. The methanol extract was associated with an IZ diameter ranging from 8.46±2.25 mm up to 27.65±1.32 mm and displayed the lowest MIC (1.25 mg/ml). Our findings indicate that fenugreek seed extracted with methanol showed the best antibacterial effect against the targeted bacterial strain.

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