Antibacterial Potential of Ethyl-Acetate Extracts of Marine Streptomyces spp. AIAH-10 against Drug Resistant Escherichia coli

2015 ◽  
Vol 7 (3) ◽  
pp. 143-150
Author(s):  
Md. Haque ◽  
Ashish Sarker ◽  
Mohammad Islam ◽  
Md. Islam
Keyword(s):  
Escherichia Coli ◽  
Ethyl Acetate ◽  
Drug Resistant ◽  
Streptomyces Spp ◽  
Marine Streptomyces ◽  
Antibacterial Potential ◽  
Ethyl Acetate Extracts

scholarly journals Antibacterial Activities of the Extracts of Sponge-Associated Fungus Trichoderma longibrachiatum against Pathogenic Bacteria

2020 ◽  
Vol 15 (2) ◽  
pp. 81
Author(s):  
Sri Sedjati ◽  
Ambariyanto Ambariyanto ◽  
Agus Trianto ◽  
Endang Supriyantini ◽  
Ali Ridlo ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Pathogenic Bacteria ◽  
Culture Media ◽  
Antibacterial Activities ◽  
Drug Resistant ◽  
Antibacterial Compounds ◽  
Trichoderma Longibrachiatum ◽  
Layer Chromatography ◽  
Antibacterial Potential ◽  
Ethyl Acetate Extracts

This study aims to explore the antibacterial potential of a sponge-associated fungus Trichoderma longibrachiatum isolated from Ternate waters, North Maluku, Eastern Indonesia. Various culture media were used to stimulate the production of secondary metabolites in T. longibrachiatum. The isolate was cultured in various media for 6-9 days. Then, the antibacterial activities of the ethyl acetate extracts were assayed against pathogenic bacteria of Multi-Drug Resistant (MDR) strain (Pseudomonas aeruginosa, Staphylococcus aureus, Klebsiella pneumoniae, and Bacillus cereus). The results showed that all extracts had similar profiles on the thin layer chromatography. However, two of the most potent extracts were produced from the PCA and MEA media for 9 days. These extracts inhibited methicillin-resistant S. aureus (MRSA) (12.48 mm and 12.27 mm); B. cereus (12.11 mm and 12.12 mm); K. pneumoniae (12.40 mm and 10.76 mm); and P. aeruginosa (11.59 mm and 8.69 mm) at concentrations 500 mg/disc. In conclusion, the fungus T. longibrachiatum that was cultured in PCA and MEA media had the potential to produce antibacterial compounds against MDR pathogens and both had similar compounds.  Meanwhile, the  ethyl acetate extracts from fungus cultured in the TPA and TA media were inactive against all tested bacteria

scholarly journals BIOAKTIVITAS JAMUR Aspergillus flavus YANG BERSIMBION DENGAN ASCIDIAN Eudistoma sp.

2020 ◽  
Vol 8 (2) ◽  
pp. 11
Author(s):  
Alfa Mongi ◽  
Deiske A Sumilat ◽  
Fitje Losung ◽  
Remmy E P Mangindaan ◽  
Rosita A Lintang ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Candida Albicans ◽  
Ethyl Acetate ◽  
Aspergillus Flavus ◽  
Marine Invertebrate ◽  
Diffusion Method ◽  
Disc Diffusion ◽  
Antibacterial And Antifungal ◽  
Ethyl Acetate Extracts

Ascidian is a marine invertebrate that produce bioactive compounds such as antibacterial and antifungal. The purpose of this study was to obtain symbiotic fungi isolates, ethyl acetate extracts from ascidian symbiotic isolates, and to determine the antibacterial and antifungal activities of ethyl acetate extracts of symbiotic isolates using the diffusion method (disc diffusion Kirby and Bauer) against Escherichia coli, Staphylococcus aureus bacteria and against the Candida albicans fungus. The results obtained 1 ascidian species which was cultured to obtain pure isolates, the pure isolates were tested molecularly and the results showed that the isolate was Aspergillus flavus, then the isolates were grown on rice medium and extracted. The results of the fungal extract showed the presence of antibacterial and antifungal activity against Escherichia coli by 10 mm, Staphylococcus aureus by 19 mm and against the Candida albicans by 13.5 mm. Keywords : Ascidian, Eudistoma sp., Aspergillus flavus, Antibacterial, Antifungal, Symbiotic.                                                  AbstrakAscidian merupakan avertebrata laut yang dapat menghasilkan senyawa bioaktif yang seperti antibakteri dan antijamur. Tujuan dari penelitian ini yaitu mendapatkan isolat jamur simbion dari ascidian, mendapatkan ekstrak etil asetat dari isolat jamur simbion ascidian, dan menguji aktivitas antibakteri dan antijamur ekstrak etil asetat isolat jamur simbion dengan metode difusi agar (disc diffusion Kirby and Bauer) terhadap bakteri Escherichia coli, Staphylococcus aureus dan terhadap jamur Candida albicsans. Hasil penelitian didapatkan 1 jenis ascidian yang kemudian dikultur untuk mendapatkan isolat murni, isolat murni diuji secara molekuler dan didapati hasil bahwa isolat tersebut merupakan jamur Aspergillus flavus. Isolat tersebut kemudian ditumbuhkan pada media nasi dan diekstrak. Hasil ekstrak jamur tersebut menunjukkan adanya aktivitas antibakteri dan antijamur terhadap bakteri Escherichia coli sebesar 10 mm, Staphylococcus aureus sebesar 19 mm dan terhadap jamur Candida albicsans 13,5 mm. Kata kunci : Ascidian, Eudistoma sp., Aspergillus flavus, Antibakteri, Antijamur, Simbion.

scholarly journals THÀNH PHẦN VÀ HOẠT TÍNH KHÁNG KHUẨN CỦA CAO ETYL AXETAT CHIẾT TỪ 3 LOÀI RONG ĐỎ THUỘC CHI LAURENCIA

2018 ◽  
Vol 18 (2) ◽  
pp. 187-196
Author(s):  
Le Ho Khanh Hy ◽  
Nguyen Kim Hanh ◽  
Pham Xuan Ky ◽  
Dao Viet Ha ◽  
Nguyen Thu Hong ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Bacillus Subtilis ◽  
Secondary Metabolites ◽  
Ethyl Acetate ◽  
Salmonella Typhimurium ◽  
Antibacterial Activities ◽  
Ethyl Acetate Extracts

This paper is concerned with composition and antibacterial activities of ethyl acetate extracts from 3 species of Laurencia (Rhodophyta): Laurencia papillosa, Laurencia flexilis and Laurencia cartilaginea collected from the southern coasts of Vietnam. The results showed that ethyl acetate (EtOAc) extracts of these species displayed antibacterial activities against Salmonella typhimurium, Escherichia coli and Bacillus subtilis. The qualitative investigations revealed the presence of two sesquiterpene secondary metabolites Elatol and Palisadin A in EtOAc extracts from the three above- mentioned Laurencia species.

scholarly journals Detection of bleomycin- like antitumor agent produced by Streptomyces spp. local isolates

2007 ◽  
Vol 1 (1) ◽  
pp. 15-26
Author(s):  
Asia J. Rweish ◽  
Mohammed A. K. Ibrahim ◽  
Rafid A. Abdul-karim ◽  
Mohammed R. Abdul-majeed ◽  
Zahra K. Jawad
Keyword(s):  
Ethyl Acetate ◽  
Ethyl Acetate Extract ◽  
Fermentation Broth ◽  
Antitumor Agent ◽  
Moderate Activity ◽  
Gram Negative Bacteria ◽  
Unknown Compound ◽  
Streptomyces Spp ◽  
Antitumor Compounds ◽  
Ethyl Acetate Extracts

Ethyl acetate extracts of fermentation cultures of five local Streptomyces isolates SRY-3, SRY-25, 5b, 10, NS-38 were identified as inhibitors of plasmacytoma cell line. Concentration at 0.016 µg/ml of ethyl acetate extract of (SRY-3,SRY-25,5b,10,NS-38) inhibited (46%,40%,21%,34%,34%) of mouse plasmacytoma cells respectively, where as 0.5 µg/ml inhibited (58%, 55%, 35%, 33%, 36%) of plasmacytoma cells .Quantities analysis of crude extracts by using HPLC on the basis of their retention times showed that the values were (4.3,4.4,4.86,4.83&4.84) min. for SRY-3, SRY-25, 5b, 10,NS-38 respectively, while the retention time of standard antitumor compounds was (4.26) min. This suggests that unknown compound of SRY-3 extract contain bleomycin-like compound. Addition of standard bleomycin to crude extract of SRY-3 increased milliabsorbans unit (M.A.U.) from 0.49 to 1.4. The concentration of bleomycin-like antitumor in fermentation broth of SRY-3 isolate was 3.441 µg/ml.The five Streptomyces isolates have moderate activity against gram-positive and gram-negative bacteria, while standard BLM have no activity.

scholarly journals Some preliminary phytochemical screening and assessment of four solvents extracts of button weed (Borreria verticillata)

2021 ◽  
Vol 24 (12) ◽  
pp. 2085-2088
Author(s):  
G.F. Kontagora ◽  
N. Lawal ◽  
D.A. Adebote ◽  
B. Kamba ◽  
M.I. Nafiu ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Ethyl Acetate ◽  
Phytochemical Screening ◽  
Woody Perennial ◽  
Whole Plant ◽  
The Family ◽  
The World ◽  
Perennial Shrub ◽  
Ancient Times ◽  
Ethyl Acetate Extracts

Borreria vertcillata is a woody perennial shrub with false-button weedy herb belonging to the family (Rubiaceae), used for treating/curing various forms of diseases across the world since ancient times. Qualitative phytochemical screening of Borreria vertcillata pulverized whole plant was carried out using four different solvent extracts (N-hexane, chloroform, ethyl-acetate and methanol). The phytochemicals screeened contained alkaloids, triterpenes, flavonoids, glycosides, tannins, saponnins, anthraquinones and steroids. The extracts were then screened for the presence of some phytochemicals such as alkaloids, anthraquinones, saponnins, steroids, terpenes, flavonoids, tannins and glycosides. All the extracts contained alkaloids, triterpenes and glycosides present but flavonoids, saponnins and tannins only present in ethyl acetate and methanol while anthraquinones and steroids were totally absent from the extracts .Of all the extracts Ethyl acetate extracts had the most influential effects on pathogenic organisms such as Culex quinquefasciatus, Staphylococcus aureus, Escherichia coli and Candidas albican

scholarly journals ANTIMICROBIAL ACTIVITY AND TLC PROFILING OF CLERODENDRUM PHLOMIDIS LINN. F LEAF EXTRACT AGAINST MULTI-DRUG RESISTANT CLINICAL PATHOGENS

2017 ◽  
Vol 9 (9) ◽  
pp. 275
Author(s):  
A. Hannah Hepsibah ◽  
M. Mala ◽  
G. Jeya Jothi
Keyword(s):  
Antimicrobial Activity ◽  
Ethyl Acetate ◽  
Petroleum Ether ◽  
Ethyl Acetate Extract ◽  
Drug Resistant ◽  
Fungal Strains ◽  
Clerodendrum Phlomidis ◽  
Clinical Pathogens ◽  
Multiple Drugs ◽  
Ethyl Acetate Extracts

Objective: The aim of the present study is to evaluate the antibacterial and antifungal activities of different solvent extracts of leaves of Clerodendrum phlomidis against multi-drug resistant clinical pathogens and to perform Thin Layer Chromatography (TLC) profiling of the extracts.Methods: The leaf powder was sequentially extracted with petroleum ether, ethyl acetate, acetone, and methanol. The extracts were tested for their antimicrobial activity against 20 bacterial strains and 15 fungal strains which were multiple drugs resistant by disc diffusion method. TLC profiling of all four extracts was performed.Results: The petroleum ether and ethyl acetate extracts showed antimicrobial activity against four bacteria and seven fungal strains. The highest zone of inhibition (18±0.50 mm) for bacteria was recorded against Staphylococcus epidermis by ethyl acetate extract and for fungi, the petroleum ether extract showed 13±0.00 mm against Trichophyton rubrum. TLC profiles showed that ethyl acetate extract possessed more compounds.Conclusion: From the results of the present study it is concluded that the petroleum ether and ethyl acetate extracts of C. phlomidis leaves are good sources of antimicrobial compounds which can inhibit multiple drug resistant pathogens.

Study effect of crude extracts of Hibiscus sabdarifa L. on some Enterobacteriaceae

2018 ◽  
Vol 9 (SPL1) ◽  
Author(s):  
Sabreen A Kamal ◽  
Ishraq A Salih ◽  
Hawraa Jawad Kadhim ◽  
Zainab A Tolaifeh
Keyword(s):  
Escherichia Coli ◽  
Ethyl Acetate ◽  
Bacterial Growth ◽  
Chemical Compounds ◽  
Inhibition Zone ◽  
Crude Extracts ◽  
And Control

Red rose or roselle (beauty rose ) is natively known as red tea belong to Malvaceae, it is flowers use traditionally for antihypertensive hepato protective, anticancer,antidiabetic,antibacterial, cytotoxicity and antidiarreal, By preparing red tea from it's flower. In this study, we extract chemical compounds by using two solvent which are Ethanol, Ethyl acetate. so we can extract Anthocyanin which is responsible for red colour of flower with many chemical compounds. then study the effect of these extracts on 5 genera from Enterobacteriacaea which can cause diarrheae (Shigella, Salmonella, Escherichia coli, Proteus and Klebsiella ) by preparing 3 concentrations for each solvent (250, 500, 750 ) mg/ml, and control then compare with two antibiotic (Azereonam 30 mg/ml and Bacitracin 10 mg/ml ) these extracts revealed obvious inhibition zone in bacterial growth.

Harmaline and its Derivatives Against the Infectious Multi-Drug Resistant Escherichia coli

2017 ◽  
Vol 13 (5) ◽  
Author(s):  
Hina Siddiqui ◽  
Sehar Tasneem ◽  
Saba Farooq ◽  
Amtul Sami ◽  
Atta-ur-Rahman ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Drug Resistant

Exploring Galleria mellonella larval model to evaluate antibacterial efficacy of Cecropin A (1-7)- Melittin against multi-drug resistant enteroaggregative Escherichia coli

2021 ◽  
Author(s):  
Jess Vergis ◽  
S V S Malik ◽  
Richa Pathak ◽  
Manesh Kumar ◽  
Nitin V Kurkure ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Galleria Mellonella ◽  
In Vivo Model ◽  
Drug Resistant ◽  
Physiological Concentration ◽  
Microbial Drug Resistance ◽  
Cecropin A ◽  
Screening And Identification

Abstract High throughput in vivo laboratory models is need for screening and identification of effective therapeutic agents to overcome microbial drug-resistance. This study was undertaken to evaluate in vivo antimicrobial efficacy of short-chain antimicrobial peptide- Cecropin A (1–7)-Melittin (CAMA) against three multi- drug resistant enteroaggregative Escherichia coli (MDR-EAEC) field isolates in a Galleria mellonella larval model. The minimum inhibitory concentration (MIC; 2.0 mg/L) and minimum bactericidal concentration (MBC; 4.0 mg/L) of CAMA were determined by microdilution assay. CAMA was found to be stable at high temperatures, physiological concentration of cationic salts and proteases; safe with sheep erythrocytes, secondary cell lines and commensal lactobacilli at lower MICs; and exhibited membrane permeabilisation. In vitro time-kill assay revealed concentration- and time-dependent clearance of MDR-EAEC in CAMA-treated groups at 30 min. CAMA- treated G. mellonella larvae exhibited an increased survival rate, reduced MDR-EAEC counts, immunomodulatory effect and proved non-toxic which concurred with histopathological findings. CAMA exhibited either an equal or better efficacy than the tested antibiotic control, meropenem. This study highlights the possibility of G. mellonella larvae as an excellent in vivo model for investigating the host-pathogen interaction, including the efficacy of antimicrobials against MDR-EAEC strains.

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