scholarly journals In vitro antimicrobial activity of total sesquiterpene lactones and phenols isolated from some Iraqi plants

2008 ◽  
Vol 5 (1) ◽  
pp. 80-83
Author(s):  
Baghdad Science Journal
Keyword(s):  
Antimicrobial Activity ◽  
Phenolic Compounds ◽  
Sesquiterpene Lactones ◽  
Active Constituents ◽  
In Vitro Antimicrobial Activity ◽  
Crude Extracts ◽  
Ethanolic Extracts ◽  
Antimicrobial Potency

The antimicrobial potency of the crude ethanolic extracts from different Iraqi plants were evaluated . Further more, total sesquiterpene lactones and phenolic compounds were isolated and their antimicrobial activity attempted. The results indicated that crude extracts have no activity except that of Callistemon lanceolatus. Also, the sesquiterpene lactones and phenolic compounds isolated from Callistemon lanceolatus were the most significant antimicrobial active constituents of the studied plants.

scholarly journals Maclura tinctoria Extracts: In Vitro Antibacterial Activity against Aeromonas hydrophila and Sedative Effect in Rhamdia quelen

Fishes ◽  
2021 ◽  
Vol 6 (3) ◽  
pp. 25
Author(s):  
Luana da Costa Pires ◽  
Patricia Rodrigues ◽  
Quelen Iane Garlet ◽  
Luisa Barichello Barbosa ◽  
Bibiana Petri da Silveira ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Phenolic Compounds ◽  
Pathogenic Bacteria ◽  
Sedative Effect ◽  
In Vitro Antimicrobial Activity ◽  
Normal Behavior ◽  
In Vitro Antibacterial Activity ◽  
Light Sedation

Maclura tinctoria is a tree species native from Brazil and rich in phenolic compounds. Since plant antibacterial activity is highly associated with phenolic compound concentration, we aim to evaluate the in vitro antimicrobial activity of different extracts against fish pathogenic bacteria. In addition, some phenolic compounds have central depressant effects and can be useful in aquaculture due to possible sedative and/or anesthetic effects. Four M. tinctoria extracts were extracted separately with ethanol; leaves (LE), bark (BE), heartwood (HE), and the sapwood (SE). In vitro antimicrobial activity was tested against Aeromonas strains at concentrations of 6400 to 3.125 μg/mL. The sedative effect was evaluated for 24 h with 30 and 100 mg/L concentrations. Chemical composition was analyzed by HPLC-DAD-MS. The HE extract had the best MIC (400 µg/mL) and MBC (800 µg/mL) compared to the LE, BE, and SE extracts. LE extract induced deep sedation and the BE, SE, and HE extracts induced light sedation. Additionally, BE, SE, and HE induced a normal behavior without side effects. Polyphenolic compounds with antimicrobial activity and sedative effects were identified mainly in HE. Thus, HE extract is safe and can be used as a sedative for silver catfish.

scholarly journals In vitro antimicrobial activity of ethanolic extracts obtained from Ficus spp. leaves against the fish pathogen Aeromonas hydrophila

2016 ◽  
Vol 24 (4) ◽  
pp. 219-230 ◽  
Author(s):  
Halyna Tkachenko ◽  
Lyudmyla Buyun ◽  
Elżbieta Terech-Majewska ◽  
Zbigniew Osadowski
Keyword(s):  
Antimicrobial Activity ◽  
Aeromonas Hydrophila ◽  
Bacterial Infections ◽  
Antibacterial Properties ◽  
Antibacterial Activities ◽  
Diffusion Method ◽  
Moderate Activity ◽  
In Vitro Antimicrobial Activity ◽  
Ethanolic Extracts

Abstract The main goal of this study was to determine in vitro antimicrobial activity of ethanolic extracts obtained from the leaves of various Ficus species against Aeromonas hydrophila isolated locally from infected rainbow trout (Oncorhynchus mykiss Walbaum) with the aim of providing scientific rationale for the use of the plant in the treatment of bacterial infections induced by Aeromonas spp. in fish. Antimicrobial susceptibility testing was done on Muller-Hinton agar with the disc diffusion method. In the present study, most ethanolic extracts proved effective against the A. hydrophila tested, with 10-12 mm inhibition zones observed. A. hydrophila demonstrated the highest susceptibility to F. pumila. Among various species of Ficus with moderate activity against A. hydrophila, the highest antibacterial activities were noted for F. benghalensis, F. benjamina, F. deltoidea, F. hispida, and F. lyrata. Thus, Ficus can be used as a natural antiseptic and antimicrobial agent in veterinary practice. Further investigations need to be conducted to isolate and identify the bioactive compounds that can then be subjected to detailed pharmacological studies and the development of clinical applications. The alarming rate of increasing resistance in bacterial pathogens in aquaculture environments means that medicinal plants with antibacterial properties are very important as natural resources of new active compounds.

scholarly journals Evaluation of the in vitro antimicrobial activity of crude extracts of three Miconia species

2003 ◽  
Vol 34 (4) ◽  
pp. 339-340 ◽  
Author(s):  
Andréa Carla Celotto ◽  
Daniela Zaupa Nazario ◽  
Marcela de Almeida Spessoto ◽  
Carlos Henrique Gomes Martins ◽  
Wilson Roberto Cunha
Keyword(s):  
Antimicrobial Activity ◽  
In Vitro Antimicrobial Activity ◽  
Crude Extracts
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