scholarly journals Comparison of Biological Properties of Two Medicinal Extracts of the Tehuacan-Cuicatlan Valley

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Karla S. Martinez-Elizalde ◽  
Marco A. Rodriguez-Monroy ◽  
Cesar M. Flores ◽  
Luis B. Hernandez-Portilla ◽  
Elizabeth Barbosa-Cabrera ◽  
...  
Keyword(s):  
Wound Healing ◽  
Antibacterial Activities ◽  
Biological Properties ◽  
Diffusion Method ◽  
Histopathological Analysis ◽  
Disc Diffusion ◽  
Bacteriostatic Effect ◽  
Disc Diffusion Method ◽  
Healing Of Wounds ◽  
Wound Healing Activity

In the Valley of Tehuacan-Cuicatlan, Cyrtocarpa procera and Bursera morelensis are located and are used in traditional medicine. In this research, several biological properties were evaluated. The methanol extracts of C. procera (MeCp) and B. morelensis (MeBm) were obtained by maceration. The antibacterial activities of the extracts were evaluated by the Kirby–Baüer disc-diffusion method. The wound healing activity was evaluated by histopathological analysis. Both extracts had a bacteriostatic effect in the Staphylococcus aureus (MeCp MIC = 0.25 mg/mL and MeBm MIC = 1 mg/mL) and the Vibrio cholerae (MeCp MIC = 1 mg/mL and MeBm MIC = 4 mg/mL). Both extracts demonstrated a wound healing efficacy similar to the reference standard (Recoveron). They also showed a high antioxidant capacity (MeCp SC50 = 5.75 μg/mL and MeBm SC50 = 4.27 μg/mL). These results are related to the concentration of phenols (MeCp = 166 and MeBm = 236.6 mg GAe/g) and flavonoids of MeCp = 16 and MeBm = 22 μg Qe/g. Both extracts, acting in a similar way in microorganisms that cause infection thanks to their antioxidant activity, favor the healing of wounds. This is the first study in which the biological properties of these two species are compared.

scholarly journals Studies of Antimicrobial Activity of 2',4',5'- and 2',3',4'-Trimethoxy Flavanones

2016 ◽  
Vol 8 (2) ◽  
pp. 209-216
Author(s):  
A. Rahim ◽  
R. Ali ◽  
A. Islam
Keyword(s):  
Pathogenic Bacteria ◽  
Sclerotium Rolfsii ◽  
Antibacterial Activities ◽  
Diffusion Method ◽  
Disc Diffusion ◽  
Disc Diffusion Method ◽  
Filter Paper Disc ◽  
Antibacterial And Antifungal ◽  
Paper Disc

 2',4',5'- and 2',3',4'-trimethoxy flavanones have been synthesized starting with 2-hydroxyacetophone and substituted aldehyde. Antibacterial activities of the flavanones have been tested along with their corresponding chalcones against two human pathogenic bacteria (Streptococcus-b-haemolyticus and  Klebsiella sp. (G-)). Antifungal activities of the flavanones have also been investigated against  two plants pathogenic mold fungi (Rhizactonia solani Sclerotium rolfsii). The structures of the synthesized compounds have been characterized with the help of  UV, IR and 1H NMR and 13C-NMR spectra. The antibacterial and antifungal screening were performed in vitro by the filter paper disc diffusion method and poisoned food technique. The flavanones showed antibacterial activity while no activity was observed to their corresponding chalcones against the tested bacteria. On the other hand, chalcones and their corresponding flavanones both showed fungicidal activities.

scholarly journals Investigation of antibacterial activity of cinnamyl derivatives of arylpiperazine

2012 ◽  
Vol 64 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Irena Novakovic ◽  
Jelena Penjisevic ◽  
V. Sukalovic ◽  
Deana Andric ◽  
G. Roglic ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Salmonella Enteritidis ◽  
Antibacterial Activities ◽  
Diffusion Method ◽  
Disc Diffusion ◽  
Disc Diffusion Method ◽  
Clostridium Sporogenes ◽  
In Vitro Antibacterial Activity ◽  
Derivatives Of

The derivatives of cinnamic acid and N-arylpiperazine show antibacterial activity. In this work the potential synergistic effect of cinnamyl derivatives of arylpiperazine in selected bacteria was investigated. The antibacterial activities of the derivatives were evaluated against Gram-positive bacteria: Staphylococcus aureus, Streptosporangium longisporum, Sarcina lutea, Micrococcus flavus, Clostridium sporogenes and Bacillus subtilis and Gram-negative bacteria: Escherichia coli, Pseudomonas aeruginosa, Salmonella enteritidis and Proteus vulgaris by the disc diffusion method. The minimum inhibitory concentration (MIC) against the selected bacteria was determined for all compounds that showed activity in the disc diffusion method. The majority of the investigated compounds displayed in vitro antibacterial activity. The effect of the type and structure of the substituent on the aromatic ring on the antibacterial activity is discussed. It was found that two derivatives expressed activity toward S. longisporum and P. aeruginosa that was almost as strong as that of amikacin.

scholarly journals Chemical Composition and Antibacterial Activity of Origanum saccatum P.H. Davis Essential Oil Obtained by Solvent-Free Microwave Extraction: Comparison with Hydrodistillation

2011 ◽  
Vol 94 (1) ◽  
pp. 243-250 ◽  
Author(s):  
Fazli Sozmen ◽  
Burcu Uysal ◽  
Birsen S Oksal ◽  
Elif Odabas Kose ◽  
I Gokhan Deniz
Keyword(s):  
Antibacterial Activity ◽  
Chemical Composition ◽  
Antibacterial Activities ◽  
Solvent Free ◽  
Diffusion Method ◽  
Microwave Extraction ◽  
Disc Diffusion ◽  
Bacterial Strains ◽  
Disc Diffusion Method ◽  
Oxygenated Compounds

Abstract The components of the essential oils (EOs) obtained by solvent-free microwave extraction (SFME) and hydrodistillation (HD) from endemic Origanum saccatum P.H. Davis were identified by using GC/MS. The main constituents of both EOs obtained by SFME and HD, respectively, from O. saccatum were p-cymene (72.5 and 70.6%), thymol (9.32 and 8.11%), and carvacrol (7.18 and 6.36%). The EO obtained by SFME contained substantially higher amounts of oxygenated compounds and lower amounts of monoterpenes than did the EO obtained by HD. The antibacterial activities of the EOs obtained by SFME and HD were evaluated with the disc diffusion method by comparison with 10 different bacterial strains. The antibacterial activity of the EO extracted by SFME was found to be more effective than that of the EO extracted by HD against seven of the tested bacteria.

In-vitro antioxidant and antimicrobial studies of ethanolic plant extracts of P. granatum, O. stamineus, A. bilimbi, M. nigra, and E. longifolia

2021 ◽  
Vol 22 ◽  
Author(s):  
Essam A. Makky ◽  
Manaf AlMatar ◽  
Mahmood H. Mahmood ◽  
Khoo Xu Wen ◽  
Tan Boon Gaik Qi
Keyword(s):  
Plant Extracts ◽  
Total Concentration ◽  
Antioxidant Properties ◽  
Reducing Power ◽  
Antibacterial Activities ◽  
Diffusion Method ◽  
Disc Diffusion ◽  
Disc Diffusion Method ◽  
Ethanolic Extracts ◽  
Mic Value

Background: Acne is a serious skin problem that affects mostly adolescents. The topical and systematic therapies are effective but could lead to several side effects and the emergence of antibacterial resistance of the acne-causing bacteria. Plant resources have been used as traditional medicine for centuries and can be the alternative therapies for acne treatment. Antioxidants are compounds that can prevent or delay the oxidation of substrates when present in low concentrations. Antioxidants are usually involved in several mechanisms of action, including the inhibition of free radical generation, enhancement of the scavenging capacity against free radicals, and reducing power. Methods: In this study, three antioxidant assays, DPPH, ABTS, and FRAP were used to evaluate the antioxidant properties of the ethanolic extracts of five plant extracts (A. bilimbi, M. nigra, O. stamineus, P. granatum, and E. longifolia). Furthermore, the study aimed to identify the most potent plant extracts and their combination which could provide better antibacterial activities against acne-causing bacteria. Ethanolic extracts of A. bilimbi, O. stamineus, M. nigra, P. granatum, and E. longifolia were prepared by the Ultrasound-Assisted Extraction (UAE) technique. Their phytochemical contents were screened using several biochemical tests and GC-MS analysis. Results: The study found that only the extracts of P. granatum and O. stamineus exhibited good antioxidant activity using DPPH assay (82.37% and 81.72% μg/mL respectively) and in ABTS assay (87.25% and 88.85% μg/mL respectively); their observed FRAP values were 115.1667 ± 5.6182 and 41.3860 ± 2.4583 μg/mL, respectively. The preliminary antibacterial screening using the disc diffusion method showed that P. granatum and O. stamineus were the most potent extracts; hence, both extracts were combined at the ratios of 1:1, 1:2, and 2:1 to a total concentration of 400 mg/mL. Discussion: The antibacterial efficacy of the mixture was studied using the disc diffusion method and the MIC value was determined. Both S. aureus and S. epidermidis were sensitive to all the individual and combined extracts but C. acnes was resistant to all of them. Conclusion: The antibacterial activity of the combined extracts against S. aureus showed a synergistic effect at the ratio of 2:1 with the inhibitory zone diameter of 18.00 ± 1.00 mm and MIC value of 12.5 mg/mL; however, antagonistic effects were observed against S. epidermidis while no effect was noted against C. acnes. Therefore, all the selected plant extracts exhibited antibacterial activities against certain bacteria and their effects may be enhanced by combining the plant extracts.

scholarly journals Novel Synthetic Monothiourea Aspirin Derivatives Bearing Alkylated Amines as Potential Antimicrobial Agents

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Norsyafikah Asyilla Nordin ◽  
Tchan Wei Chai ◽  
Bee Ling Tan ◽  
Ching Liang Choi ◽  
Ainaa Nadiah Abd Halim ◽  
...  
Keyword(s):  
Antimicrobial Agents ◽  
Inhibition Zone ◽  
Antibacterial Activities ◽  
Diffusion Method ◽  
Disc Diffusion ◽  
Disc Diffusion Method ◽  
E Coli ◽  
Alkyl Chains ◽  
Relative Inhibition ◽  
C Nmr

A new series of aspirin bearing alkylated amines moieties 1–12 were synthesised by reacting isothiocyanate with a series of aniline derivatives in overall yield of 16–56%. The proposed structures of all the synthesised compounds were confirmed using elemental analysis, FTIR, and 1H and  13C NMR spectroscopy. All compounds were evaluated for antibacterial activities against E. coli and S. aureus via turbidimetric kinetic and Kirby Bauer disc diffusion method. Compound 5 bearing meta -CH3 substituent showed the highest relative inhibition zone diameter against tested bacteria compared to ortho and para substituent. Furthermore, aspirin derivatives bearing shorter chains exhibited better bacterial inhibition than longer alkyl chains.

scholarly journals The chemical composition of the essential oil and the antibacterial activities of the essential oil and methanol extract of Teucrium montanum

2008 ◽  
Vol 73 (3) ◽  
pp. 299-305 ◽  
Author(s):  
Nenad Vukovic ◽  
Tanja Milosevic ◽  
Slobodan Sukdolak ◽  
Slavica Solujic
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Methanol Extract ◽  
Bacterial Species ◽  
Antibacterial Activities ◽  
Diffusion Method ◽  
Disc Diffusion ◽  
Inhibitory Effects ◽  
Disc Diffusion Method

This study was designed to examine the chemical composition of the essential oil and the in vitro antibacterial activities of the essential oil and methanol extract of Teucrium montanum. The inhibitory effects of the essential oil and the methanol extracts of Teucrium montanum were tested against thirteen bacterial species using the disc-diffusion method. GC/MS analyses revealed that the essential oil contained mainly sesquiterpenes, such as ?-cadinene (17.19 %), ?-selinene (8.16 %) and ?-calacorene (4.97 %). The highest activities were obtained with the essential oil of Teucrium montanum against K. pneumoniae, B. subtilis, B. mycoides, E. cloaceae and A. chlorococcum. In addition, comparison of the antibacterial activities of the essential oil and the methanol extract showed that the essential oil exhibited the stronger antibacterial activities.

scholarly journals Antibacterial Activities of Some Schiff Bases Involving Thiosemicarbazide and Ketones

2014 ◽  
Vol 26 ◽  
pp. 53-61 ◽  
Author(s):  
S.M.S. Shariar ◽  
M. Jesmin ◽  
M.M. Ali
Keyword(s):  
Antibacterial Activity ◽  
Minimum Inhibitory Concentration ◽  
Schiff Bases ◽  
Cytotoxic Effect ◽  
Pathogenic Bacteria ◽  
Inhibitory Concentration ◽  
Antibacterial Activities ◽  
Diffusion Method ◽  
Disc Diffusion ◽  
Disc Diffusion Method

Three Schiff bases derived from thiosemicarbazide and ketones (Vanillin, Benzophenone and Acetophenone) were used to study their antibacterial activities against some pathogenic bacteria by disc diffusion method. Of these, benzophenone thiosemicarbazone showed significant antibacterial activity as compared with that of Kanamycin. All these three compounds were found to possess cytotoxic effect. Minimum inhibitory concentration of these compounds was also determined.

scholarly journals ANTIBACTERIAL ACTIVITY OF A COPPER(II) COMPLEX OF 1-(1H-BENZIMIDAZOL-2-YL)-N- (TETRAHYDROFURAN-2-YLMETHYL) METHANAMINE

2015 ◽  
Vol 2 (1) ◽  
pp. 11-14
Author(s):  
Elayaperumal R ◽  
Kiruthika M ◽  
Dharmalingam P
Keyword(s):  
Antimicrobial Activity ◽  
Cyclic Voltammetry ◽  
Antibacterial Activity ◽  
Free Ligand ◽  
Antibacterial Activities ◽  
Diffusion Method ◽  
Disc Diffusion ◽  
Disc Diffusion Method ◽  
Infra Red ◽  
Uv Visible

A mononuclear copper(II) complex of 1-(1H-benzimidazol-2-yl)-N-(tetrahydrofuran-2- ylmethyl)methanamine) was synthesized and characterized by various physicochemical techniques like cyclic voltammetry and elemental analysis, ESI-MS, UV–Visible, Infra red and EPR spectroscopy. The antibacterial activities of the ligand and its complex were screened by disc diffusion method and found that the metal complexes have higher antimicrobial activity than the free ligand.

scholarly journals Comparative Study on Hylocereus Polyrhizus Peels Extract and Aloe barbadensis Leaves Extract as Potential Natural-based Sources in Antibacterial and Antioxidant Activities

2019 ◽  
Vol 14 (2) ◽  
pp. 208-219
Author(s):  
Hamidah Jaafar Sidek ◽  
Nurul Amalina Md Zemi
Keyword(s):  
Propionibacterium Acnes ◽  
Antioxidant Activities ◽  
Antibacterial Activities ◽  
Diffusion Method ◽  
Skin Infections ◽  
Disc Diffusion ◽  
Dpph Assay ◽  
Disc Diffusion Method ◽  
Aloe Barbadensis ◽  
Hylocereus Polyrhizus

Aloe barbadensis leaves and Hylocereus polyrhizus are plants that are easily found in Malaysia. They arecommonly studied for antibacterial activity and how they can benefit the human being. However it is notknown about how the combination of both plants work to become the alternative way of remedies. Theobjectives of this study were to determine the antibacterial, antioxidant, and toxicity of Hylocereuspolyrhizus peels and Aloe barbadensis leaves extracts. The antibacterial activities were evaluatedtowards the bacteria commonly associated with skin infections; which are Staphylococcus aureus,Propionibacterium acnes and Pseudomonas aeruginosa, using Kirby-Bauer Disc Diffusion method. Theantioxidant activity was determined using DPPH assay. The toxicity activity was evaluated by exposingthe extracts towards brine shrimp. As for the results, Aloe barbadensis extracts showed the highestantibacterial activity compared to Hylocereus polyrhizus and the combination of both extracts. For theantioxidant activity and the toxicity test, Hylocereus polyrhizus possessed the best result, where the IC50obtained was 226.397 μg/ml and LC50 was 28588.76 μg/ml (non-toxic). In conclusion, Aloe barbadensis,Hylocereus polyrhizus and the combination of both have the potential to become alternative way asremedies instead of modern medicines.  Keywords: Hylocereus polyrhizus, Aloe barbadensis, antibiotics, antioxidants, toxicity.  

scholarly journals Antibacterial activities of Protein Extracts From Andrographis Paniculata, Tinospora Crispa and Centella Asiatica

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Noor Hasniza Zin ◽  
Nurul Fatihah Ahmad ◽  
Noraslinda Muhamad Bunnori ◽  
Widya Abdul Wahab ◽  
Normah Haron
Keyword(s):  
Antibacterial Activity ◽  
Centella Asiatica ◽  
Inhibition Zone ◽  
Antibacterial Activities ◽  
Andrographis Paniculata ◽  
Diffusion Method ◽  
Disc Diffusion ◽  
Disc Diffusion Method ◽  
Sds Page ◽  
New Antibiotics

Introduction: Andrographis paniculata, Tinospora crispa and Centella asiatica are known to have various pharmacological functions. This research was carried out to investigate the antibacterial activities of protein extracts from A. paniculata, T. crispa and C. asiatica. Methods: Total soluble proteins from these herbs were extracted using a modified TCA/acetone method. The protein extracts were then quantified using the Bradford assay and separated using SDS-PAGE. The antibacterial activities were determined by disc diffusion method. Results: T. crispa had a significantly higher amount of proteins (83.86 ± 0.4 µg/µl) compared to A. paniculata (81.57 ± 0.4 µg/µl) and C. asiatica (78.93 ± 0.5 µg/µl). The proteins separated by SDS-PAGE were ranged from 30kDa to 260kDa, 25kDa to 110kDa and 25kDa to 160kDa for A. paniculata, T. crispa and C. Asiatic, respectively. The high abundance proteins were observed in A. paniculata and T. crispa but not in C. asitica. Protein extracts from C. asiatica have demonstrated antibacterial activity against all tested bacteria with the diameter of inhibition zone of 11.0 ± 0.5 mm, 12.3 ± 0.6 mm, 10.7 ± 0.7 mm and 20.0 ± 0.8 mm against B. cereus, S. aureus, K. pneumonia and S. typhimurium respectively. Meanwhile, protein extracts of A. paniculata showed a positive antibacterial activity only against B.cereus (13.7 ± 0.4 mm), S. aureus (7.0 ± 0.8 mm) and S. typhimurium (11.5 ± 0.3 mm). Protein extracts from T. crispa only showed a positive antibacterial activity against B. cereus (9.7 ± 0.5 mm). Conclusions: There is a constant need in the discovery of new antibiotics for the treatment of infectious diseases.

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