Antibacterial activity of ethanolic extracts of some moss species

Karpiński, Tomasz M.; Adamczak, Artur

doi:10.1515/hepo-2017-0014

Cited by 18 publications

(10 citation statements)

References 15 publications

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“…The content of biologically active substances in bryophytes depends on the ecological conditions of growth. The pH of the bark can affect also the amount and type of biologically active substances, which may strongly vary in the bryophytes [ 28 , 56 , 57 , 58 ], and vice versa.…”

Section: Discussionmentioning

confidence: 99%

How Does the pH of Tree Bark Change with the Presence of the Epiphytic Bryophytes from the Family Orthotrichaceae in the Interaction with Trunk Inclination?

Kovarova

Pyszko

Plášek

2021

Plants

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The pH of tree bark is affected by many factors, amongst them epiphytic bryophytes changing in their active state environment. Thus, we hypothesized that bryophytes can change bark acidity, dependently of the inclination of the branches, as inclination affect the water regime and particle deposition. We measured the pH under bryophyte cushions and compared it to nearby naked bark. Additionally, we compared results with experimental bark covering with neutral cover. We found that the pH of naked bark declines with decreasing inclination of trunks. Although bryophyte cover did not generally change the pH of the bark, there was a significant interaction with inclination: with higher inclination, bryophytes decrease the pH reaction of bark, while with lower inclination they increase it. One possible explanation may lie in changes to alkaline particle deposition, or conversely in the acidification of the bark by leaching. In addition, an experiment with a neutral cover showed that naked bark covering would substantially increase pH. As, on average, bryophytes do not change the pH of bark, there can be mutual interference between the alkalizing effect of the bark cover itself and the acidifying biological effect of bryophytes.

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Section: Discussionmentioning

confidence: 99%

How Does the pH of Tree Bark Change with the Presence of the Epiphytic Bryophytes from the Family Orthotrichaceae in the Interaction with Trunk Inclination?

Kovarova

Pyszko

Plášek

2021

Plants

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“…The microbial growth inhibitory potential of the tested xanthophyll was determined by using the agar disc-diffusion method according to recommendations of the Clinical and Laboratory Standards Institute (CLSI) [39], and as described in our previous publication [40]. In brief, bacterial inocula of 0.5 McFarland were prepared.…”

Section: Methodsmentioning

confidence: 99%

Fucoxanthin—An Antibacterial Carotenoid

2019

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Fucoxanthin is a carotenoid produced by brown algae and diatoms. This compound has several biological properties such as antioxidant, anti-obesity, anti-diabetic, anticancer, and antimicrobial activities. Unfortunately, until now the latter effect has been poorly confirmed. The aim of this study was an evaluation of fucoxanthin activity against 20 bacterial species. Antimicrobial effect of fucoxanthin was determined by using the agar disc-diffusion and micro-dilution methods. The studied carotenoid acted against 13 bacteria growing in aerobic conditions. It was observed to have a significantly stronger impact on Gram-positive than Gram-negative bacteria. Mean zones of growth inhibition (ZOIs) for Gram-positive bacteria ranged between 9.0 and 12.2 mm, while for Gram-negative were from 7.2 to 10.2 mm. According to the agar disc-diffusion method, the highest activity of fucoxanthin was exhibited against Streptococcus agalactiae (mean ZOI 12.2 mm), Staphylococcus epidermidis (mean ZOI 11.2 mm), and Staphylococcus aureus (mean ZOI 11.0 mm), and in the microdilution test towards Streptococcus agalactiae with the minimal inhibitory concentration (MIC) of 62.5 µg/mL. On the other hand, fucoxanthin was not active against strict anaerobic bacteria.

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“…In a microbiological study, 89 Bacillus spp. were isolated from clinical blood cultures, [43] which indicates its antibiotic resistance. The most common clinically significant isolate was B. cereus ; other strains isolated include B. megaterium , B. polymyxa , B. pumilus , B. subtilis , B. circulans , B. amyloliquefaciens , and B. licheniformis .…”

Section: Resultsmentioning

confidence: 99%

Biological Activity and Phytochemical Analysis of Dicranum scoparium against the Bacterial Disease for Honey Bee

Karaoğlu

Yaylı

Erik

et al. 2022

Chemistry & Biodiversity

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Bacterial diseases, such as American Foulbrood (AFB) and European Foulbrood (EFB), are known to have catastrophic effects on honey bees (if left to spread, can wipe out entire colonies), leading to severe financial losses in the beekeeping industry. The aim of this study was to evaluate the pharmacological properties of methanol extract and its fractions (ethyl acetate, hexane, water) derived from Dicranum scoparium Hedw., which could be utilized as a potential drug to prevent the bacterial diseases (AFB and EFB) affecting the honey bees. For this purpose, crude methanol extract and ethyl acetate/hexane/water fractions were prepared from the aerial part of D. scoparium, collected from Trabzon province. Bio‐guided fractionation of the extract and its fractions led to the first‐time isolation of five compounds. The structure of all compounds was elucidated by nuclear magnetic resonance (NMR) spectroscopy, ultraviolet (UV) spectral analysis, Fourier‐transform infrared spectroscopy (FT‐IR), liquid chromatography quadrupole time‐of‐flight mass spectroscopy (LC‐QToF‐MS), and by comparison of their NMR data with that of literature. The analysis of these compounds revealed significant antibacterial and sporicidal activities against bacteria causing larval diseases in honey bees. The antibacterial activity of these compounds ranged from 0.6 to 60 μg/mL against AFB and EFB causing bacteria. Therefore, the natural raw extract and fractions of D. scoparium could be used as potential therapeutic agents against bacterial agents affecting honey bees.

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Antibacterial activity of ethanolic extracts of some moss species

Cited by 18 publications

References 15 publications

How Does the pH of Tree Bark Change with the Presence of the Epiphytic Bryophytes from the Family Orthotrichaceae in the Interaction with Trunk Inclination?

How Does the pH of Tree Bark Change with the Presence of the Epiphytic Bryophytes from the Family Orthotrichaceae in the Interaction with Trunk Inclination?

Fucoxanthin—An Antibacterial Carotenoid

Biological Activity and Phytochemical Analysis of Dicranum scoparium against the Bacterial Disease for Honey Bee

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