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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For example, Bartramia pomiformis, Leucolepsis acanthoneuron, Frullania nisquallensis showed antibiotic activity only using ethanolic extraction.

Gm —ve Klebsiella pneumoniae. For example, Castaldo-Cobianchi showed high antibacterial activity of Conocephalum conicum against pathogenic bacteria. Table 3 Antibiotic antimicdobial in disc diffusion assays of bryophytes from South Western British Columbia. The reference antibiotics showed a range of 5.

They lack roots and attach to their environment with rhizoids Medical Student Journal of Australia. For example, Lunularia cruciata, Plagiochila porelloides and Marchantia polymorphia showed inhibition zones greater than 2.

Freeman New York, NY. The average inhibition zone in methanolic extracts ranged from 1. These values are approximately one third of the inhibition of reference antibiotics.

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Physiologically, Gram-negative bacteria have an outer membrane while the Gram-positive bacteria only have peptidoglycan layer Journal of Botanical Laboratory No. Plants of Coastal British Columbia. 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. The screening results are listed in Table 2 and 3 for ethanolic and methanolic extractions respectively.


Furthermore, bryophytes utilize the sporangium for reproduction via sporulation but they neither flower nor produce seeds Recently, the public demand for herbal medicine and the rise of antibiotic-resistant bacteria have motivated scientists to look for new natural sources with potential pharmaceutical capabilities 3.

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 How did I get here? All extracts were stored at room temperature. The occurrence of antibiotic substances appears to be more frequent in hepatics.

MSJA | Medical Student Journal of Australia

One and half grams of the ground material were extracted in 25ml of antjmicrobial over 24 hours. The sporophyte typically consists of an unbranched seta, and a single terminal sporangium Six mm sterile filter paper discs were impregnated with extract and placed on seeded agar.

Fourteen crude methanolic and ethanolic extracts of bryophytes from South Western British Columbia were screened for antibiotic activity against three bacterial strains.


Before extraction all plant material collected was washed with distilled water to remove any adhering soil or extraneous material. Bacterial sensitivities Gram-positive bacteria, B. All extractions were performed with methanol.

Antibacterial Activity of Extracts from Some Bryophytes

Samples of all tested plants were collected by M. I would like to gratefully acknowledge Dr.

Antibacterial activity in extracts of some bryophytes from China and Mongolia. Bryophytes typically grow in close association with each other.

Furthermore, I would like to thank the University of British Columbia for providing me with resources and facilities to conduct my experiments and research. This includes thallus, sporophyte, aerial gametophyte and underground portions.

Table 4 Known active compounds extracted with solvents: The bacteria used were Bacillus subtilis, Escherichia coli, and Klebsiella pneumoniae.