Keywords: Bryophytes, Antibacterial, Antiviral, Cucumber, Pathogenic bacteria, bryophytes for antimicrobial activity. Journal of. Medicinal Plants, 7, ). Antibacterial Activity of Extracts from Some Bryophytes. Vizma Nikolajeva1*, Ligita Liepina1, Zaiga Petrina1, Guntra Krumina1. The antimicrobial activity of aqueous and ethanolic extracts of 11 Bryophyta and Naturally Grown Bryophytes,” Journal of Medicinal Plant Research, Vol. 5, No.
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Bryophytes in this region are herbaceous plants that grow closely packed together in mats or cushions on rocks, soil, or as epiphytes on the trunks and leaves of forest trees Recently, the public demand antimicobial herbal medicine and the rise of antibiotic-resistant bacteria have motivated scientists to look for new natural sources with potential pharmaceutical capabilities 3.
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For example, Bartramia pomiformis, Leucolepsis acanthoneuron, Frullania nisquallensis showed antibiotic activity only using ethanolic extraction. Bryophyta mossesMarchantiophyta liverworts or uournal and Anthocerotophyta hornworts 7.
For example, Lunularia cruciata, Plagiochila porelloides and Marchantia polymorphia showed inhibition zones greater than 2. Alcoholic extracts from Bruophytes conicum, Sphagnum palustre, Hylocomium splendens and Atricum selwynii showed no visible activity against any Gram-positive or Gram-negative bacteria. Consequently, bryophytes remain small and flourish in places where there is an abundant water supply All extractions were performed with ethanol. Introduction T he occurrence of antibiotic substances in bryophytes has been well documented by botanists and microbiologists 1,2.
Journal of Ethnopharmacology, Table 4 Known active compounds antimicribial with solvents: For example, a potential source of experimental error in the current experiment was failing to use filtration devices or rotoevaporation to isolate our antibiotic compounds.
Physiologically, Gram-negative bacteria have an outer membrane while the Gram-positive bacteria only have peptidoglycan layer This suggests that specific antibacterial compound seffective against the selected bacterial species, tend to be isolated more effectively from liverworts and mosses using ethanol.
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The screening results are listed in Table 2 and 3 for ethanolic and methanolic extractions respectively. How did I get here? Table 4 lists some of the known compounds which have been extracted from methanolic and ethanolic extracts. According to the literature, all of these species should have shown some antibiotic activity against B. In addition, isolating the antibiotic compounds by Nuclear Magnetic Resonance and Mass Spectrophotometry allows for examination of compound structure.
Antibiotic activity Recent studies indicate evidence of antibiotic properties of some bryophyte species, incongruent with my results.
Furthermore, re-testing bryophytes that performed differently from documented results could allow for greater understanding of the factors affecting activity. The onlyexception was Polytrichastrum alpinum, which showedindeterminate antibiotic response.
Further investigation would be required to determine if a polyacetylene, sterol or propolis found in the mosses, and liverworts are responsible to the antibiotic nature of the species. In our study, none of these species displayed any activity.
Gm journla Escherichia coli. Lichenol Rev Bryol Biologically active compounds from bryophytes. Therefore, the whole organism was collected wherever possible. All extracts were stored at room temperature. Eating for Two – The common misconception in pregnancy. Many of these species are prevalent in British Columbia. National Climatic Data Cenetre. Further research will be needed to confirm indications that P.
Six mm sterilized filter paper discs were then impregnated with the approximately nine drops of the homogenous extract. I would like to gratefully acknowledge Dr.