Antimicrobial and antifungal activity of soil actinomycetes isolated from coal mine sites

Sarika, Kasarla; Sampath, Gattu; Govindarajan, Rasiravathanahalli Kaveriyappan; Ameen, Fuad; Alwakeel, Suaad S.; Gwaiz, Hussah I. Al; Komuraiah, Thampu Raja; Ravi, G.

doi:10.1016/j.sjbs.2021.03.029

Cited by 34 publications

(19 citation statements)

References 19 publications

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“…Melanin production was also seen in almost all of the studied strains, which is a key descriptive characteristic of Streptomyces sp. [ 23 ]. A similar study was carried out by Sapkota et al [ 13 ], in which 78% of the total Streptomyces could exhibit demonstrate one or more enzymatic activities.…”

Section: Discussionmentioning

confidence: 99%

“…Two hundred and forty-nine (249) actinomycete isolates with the antagonistic potential against bacterial pathogens were preliminarily screened by the cross-streak assay, and antifungal activities were tested by the spot inoculation method [ 23 ]. Then, they were primarily screened for antimicrobial activity using Mueller–Hinton Agar (MHA) medium for bacteria and slightly modified potato dextrose agar supplemented with (g/L: 0.5 K 2 HPO 2 , 0.75 CaCO 3 , 0.5 MgSO 4 .7H 2 O, and 2 NaCl) for fungi.…”

Section: Methodsmentioning

confidence: 99%

“…Solvent extraction of the bioactive metabolite from the selected actinomycetes isolates which exhibit a broad-spectrum activity in primary screening was done by liquid-state fermentation as described in [ 22 , 23 ] with some modifications. Briefly, two milliliters from each fresh culture were transferred into 100 mL of (ISP-2 broth) yeast extract malt extract dextrose broth in conical flasks under sterile conditions and were placed into a shaking incubator at 28 ± 2°C for 8 days.…”

Section: Methodsmentioning

confidence: 99%

“…The supernatant broth was collected and mixed 1:1 ( v / v ) with an equal amount of ethyl acetate (50 mL). The bioactive compound-containing organic solvent phase was then separated from the aqueous phase in a separatory funnel, collected, and evaporated in a vacuum rotary evaporator at 100 rev/min and 60°C [ 23 ]. The completely dried residues from each isolate were weighted separately using a balance and dissolved in dimethyl sulfoxide (DMSO) and placed in small vials at 4°C to determine the antimicrobial activity and further analysis.…”

Section: Methodsmentioning

confidence: 99%

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Antimicrobial Potential of Streptomyces spp. Isolated from the Rift Valley Regions of Ethiopia

Elias

Muddada

Muleta

et al. 2022

Advances in Pharmacological and Pharmaceutical Sciences

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The study was undertaken to isolate, screen, and identify actinomycetes with antimicrobial metabolites. Twenty-one composite soil samples were randomly collected from various unique agroecological niches in the Rift Valley of Ethiopia. The soil samples were serially diluted and spread on starch casein agar medium supplemented with 50 μg/ml cycloheximide and 25 μg/ml nalidixic acid. Two hundred and forty-nine (249) actinomycetes cultures were isolated and screened by cross streaking against various human pathogens. Twenty-four isolates with pronounced antimicrobial activity were selected for identification and further screening. Among the isolates, 172 (69.1%) showed antimicrobial activities against tested pathogens. The inhibition zone of the isolates ranged from 5 ± 0.31 to >40 mm during primary screening. The antimicrobial activity of the crude extracts of promising isolates showed a statistically significant difference P < 0.05 between them and the control. The isolates RVE129 and RVE217 showed the maximum zone of inhibition at 27 ± 0.6 mm and 26 ± 0.6 mm, respectively, against S. aureus, and the results were higher than the standard drug streptomycin (25 ± 0.58 mm). The inhibition zone of crude extracts from RVE129 was at the maximum of 22 ± 0.0 mm against P . aeruginosa, almost comparable to the standard drug streptomycin (24 ± 0.58 mm). Crude extract from the isolates RVE129 and RVE187 showed higher inhibition zones of 22 ± 0.6 mm and 16 ± 0.33 mm against A. niger ATCC10535, which, however, were smaller than those obtained with the standard drug amphotericin B (29 ± 0.6 mm). Twenty-four actinomycete strains with remarkable bioactivity were characterized using various cultural, morphological, physiological, and biochemical characteristics and assigned under the genus Streptomycetes. The finding of the current study indicates that Streptomyces sp. isolated from the Rift Valley of Ethiopia was found to possess a broad spectrum of bioactivity against a range of human pathogens.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Antimicrobial Potential of Streptomyces spp. Isolated from the Rift Valley Regions of Ethiopia

Elias

Muddada

Muleta

et al. 2022

Advances in Pharmacological and Pharmaceutical Sciences

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“…Our findings are similar to previous report of Hadizadeh et al (2015) who stated the inhibition of A. fumigatus by extract of S. rochei HF391. Sarika et al (2021) Sudha et al (2018) several metabolites of microbial origin exhibit characteristics absorption spectra in the UV-Vis region which can be give an insight into the identification of the compounds when the spectra are compared with the spectra documented in the library.…”

Section: Antimicrobial Activity Of the Three Streptomyces Speciesmentioning

confidence: 99%

Isolation, characterization, antimicrobial and other bioactivity profiles of three Streptomyces strains isolated from Lake Gerio, Yola, Adamawa State, Nigeria

2021

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Background Actinomycetes are prolific producers of bioactive compounds which can be used to combat microbial infections. Microbial infections have resulted to increase in mortality and morbidity rates world-wide, especially in developing nations. This study was carried out to isolate and identify actinomycetes with potentials of synthesizing bioactive compounds, to produce and partially purify antimicrobial extracts, to characterize bioactive compounds in the extracts, to assess their antibacterial activity and to profile other biological properties of the bioactive compounds synthesized by the actinomycetes. Results Streptomyces sp. SUI (MT584797), Streptomyces sp. SW72IV (MT584818) and Streptomyces sp. SW72VII (MT584816) were isolated and identified. Ultraviolet–visible spectra absorption ranged between 241 and 251 nm wavelengths showing the polyene or chromone and unsaturation nature of the natural compounds. Infrared (IR) spectra indicated functional groups such as hydroxyl, aliphatic bromo, carbonyls, esters, carboxylic acids and silicon oxy compounds in the compounds produced by the three strains. Gas Chromatography-Mass Spectrum (GC–MS) identified elaidic acid isopropyl ester (32.11%), Octadec-9-enoic acid (17.44%) and 2, 3-dihydroxyl elaidate (10%) to be mostly produced by Streptomyces sp. SUI, Streptomyces sp. SW72IV and Streptomyces sp. SW72VII respectively. The three strains exhibited antimicrobial activity against Bacillus sp. Pseudomonas aeruginosa ATCC 9077, Staphylococcus aureus ATCC 700699, Candida albicans and Aspergilus flavus. Conclusion The results showed that the three strains of Streptomyces could be sources of antimicrobial bioactive compounds and other secondary metabolites that can be used in the production of pharmaceutical bioactive agents that are effective against pathogens, and production of biological materials that can be used in cosmetics and food industries.

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Apoptotic, cytotoxic, antioxidant, and antibacterial activities of biosynthesized silver nanoparticles from nettle leaf

Dağlioğlu

Öztürk

Khatami

2023

Microscopy Res & Technique

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Here, we reported the biosynthesis of silver nanoparticles (AgNPs) using Urtica dioica (nettle) leaf extract as green reducing and capping agents and investigate their anticancer and antibacterial, activity. The Nettle‐mediated biosynthesized AgNPs was characterized by UV–Vis a spectrophotometer. Their size, shape and elemental analysis were determined with the using of SEM and TEM. The crystal structure was determined by XRD and the biomolecules responsible for the reduction of Ag+ were determined using FTIR analysis. Nettle‐mediated biosynthesis AgNPs indicated strong antibacterial activity against pathogenic microorganisms. Again, the antioxidant activity of AgNPs is quite high when compared to ascorbic acid. Anticancer effect of AgNPs, IC50 dose was determined by XTT analysis using MCF‐7 cell line and the IC50 value was found to be 0.243 ± 0.014 μg/mL (% w/v).

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Antimicrobial and antifungal activity of soil actinomycetes isolated from coal mine sites

Cited by 34 publications

References 19 publications

Antimicrobial Potential of Streptomyces spp. Isolated from the Rift Valley Regions of Ethiopia

Antimicrobial Potential of Streptomyces spp. Isolated from the Rift Valley Regions of Ethiopia

Isolation, characterization, antimicrobial and other bioactivity profiles of three Streptomyces strains isolated from Lake Gerio, Yola, Adamawa State, Nigeria

Apoptotic, cytotoxic, antioxidant, and antibacterial activities of biosynthesized silver nanoparticles from nettle leaf

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