Phytochemical studies on five medicinal ferns collected from Southern Western Ghats, Tamilnadu (original) (raw)
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Characterization of antimicrobial compounds from a common fern, Pteris biaurita
Indian journal of experimental biology
Methanol extract was prepared from the fronds of Pteris biaurita and partial purification was done by solvent partitioning with diethyl ether and ethyl acetate, followed by hydrolysis and further partitioning with ethyl acetate. The three fractions, thus obtained were bioassayed separately against five test fungi-Curvularia lunata, Fomes lamaoensis, Poria hypobrumea, Fuasrium oxysporum and a bacterium-Bacillus pumilus, by spore germination, radial growth and agar cup techniques. Results revealed that ethyl acetate fraction (III) contained the active principle. TLC plate bioassay of the active fraction revealed inhibition zone at an R f of 0.5-0.65. Silica gel from this region was scraped, eluted in methanol and subjected to UV-spectrophotometric analysis. An absorption maxima of 278 nm was recorded. HPLC analysis of TLCeluate revealed a single peak with retention time of 8.1 min. GC-MS analysis revealed six major peaks in the retention time range of 7.2-10.9 min. Comparison with GC-MS libraries revealed that the extracts may contain a mixture of eicosenes and heptadecanes.
Antibacterial activity of some ethno-botanically important ferns of Southern Assam, India
2016
Pteridophytes form an important part of the biodiversity of this blue green planet. It has been agreed by recent workers that pteridophytic population of India is about 10% of the total pteridophytic flora of the world. Besides showing economic values towards food and fodder, indicators, bio fertilizers, insect repellents etc. quiet a large number of pteridophytic species are used by different communities as medicine and folk medicines. They treat cuts and wounds and many other diseases with leaf extract/rhizome extract of pteridophytes. The tribal people of Barak Valley area of Southern Assam, are using different species of pteridophytes to cure various diseases. In the present communication, total 21 species of common pteridophytes were enumerated from Barak Valley. The ethnobotanical importance of these species as reported by different authors were reviewed and presented in tabulated form. Further, frond extract of these species were tested against five potentially pathogenic mic...
QUALITATIVE AND QUANTITATIVE ANALYSIS OF PHYTOCHEMICALS IN FIVE PTERIS SPECIES
Objectives: The objective of the present study was to find out the presence of phytochemicals in the methanol extracts of five ferns in Pteridaceae family such as Pteris argyreae T. Moore, Pteris confusa T.G. Walker, Pteris vittata L., Pteris biaurita L., and Pteris multiaurita Ag., by both qualitative and quantitative screening methods.
Phytochemicals from fern species: potential for medicine applications
Phytochemistry Reviews, 2017
Ferns are an important phytogenetic bridge between lower and higher plants. Historically they have been used in many ways by humans, including as ornamental plants, domestic utensils, foods, and in handicrafts. In addition, they have found uses as medicinal herbs. Ferns produce a wide array of secondary metabolites endowed with different bioactivities that could potentially be useful in the treatment of many diseases. However, there is currently relatively little information in the literature on the phytochemicals present in ferns and their pharmacological applications, and the most recent review of the literature on the occurrence, chemotaxonomy and physiological activity of fern secondary metabolites was published over 20 years ago, by Soeder (Bot Rev 51:442-536, 1985). Here, we provide an updated review of this field, covering recent findings concerning the bioactive phytochemicals and pharmacology of fern species.
ANTIMICROBIAL ACTIVITIES AND PHYTOCHEMICAL INVESTIGATION OF SOME NATIVE PTERIDOPHYTES
The present investigation was carried out to screen the phytochemical and antimicrobial properties of three pteridophytes plants such as Salvinia minima Baker, Thelypteris interrupta (Wild.) K. Iwats and Marsilea minuta L. commonly found in Odisha, India. The dried and pulverized plant materials (whole) were extracted using two different solvent such as methanol and chloroform. The antimicrobial activity was demonstrated against eighteen bacterial pathogens such as Staphylococcus aureus, S.citreus, Escherichia coli, Pseudomonas sp., Pseudomonas aeruginosa, Salmonella typhii, S. paratyphii A, S. paratyphii B, Chromobacter, Enterobacter, Citrobacter fruendii, Klebsiella, Vibrio cholera, Shigella sonnie, S. boydii, Providencia, Proteus mirabilis, P. vulgaris and four fungal pathogens such as Candida albicans, Aspergillus niger, A. flavus, Rhizopus sp. Methanol extracts showed the presence of major phytoconstituents such as alkaloids, tannins, anthroquinone, steroids and terpenoids as compared to chloroform. Among the three pteridophytes, T. interrupta showed the presences of maximum phytoconstituents. The highest antibacterial activity (28mm) was observed in the methanol extract of T. interrupta against S.citreus whereas maximum antifungal activity (22mm) was observed against A. flavus in the methanol extract of S.minima.
Notulae Botanicae …, 2012
The aim of this paper was to test the antioxidant activity, polyphenols content and antimicrobial activity of crude extracts obtained from leaves of pteridophyte species commonly found in Romania. The ORAC (Oxygen Radical Absorbance Capacity) of the investigated ferns varied between 421.90 μmol TE (Trolox equivalents/g FW (fresh weight) in Dryopteris filix-mas and 128.18 μmol TE/g FW in D. affinis. Methanolic extracts obtained from leaves of ferns have similar antioxidant activity to that of some medicinal plants. Polyphenols content in the leaves of ferns varies between 2340 mg Gallic acid equivalents (GAE)/100 g FW in D. filix-mas and 887 mg GAE/100 g FW in D. affinis. The correlation coefficient between ORAC and the total polyphenol content was R=0.985. This correlation suggests that phenolic compounds are major contributors to the antioxidant activity. The methanolic extract obtained from ferns inhibits the growth of Gram negative Escherichia coli ATCC 25922, Pseudomonas aeruginosa NBJMCC1390, Salmonella abony and Gram positive Staphyllococcus aureus ATCC 25093 and Enterococcus faecalis. The highest antimicrobial activity was determined for the Dryopteris extract. The antimicrobial activity of methanolic extracts obtained from leaves of D. filix-mas and D. affinis is better than the A. filix-femina in the case of Brevibacterium flavum ATCC 14067, Sarcina sp., Bacillus cereus ATCC 1390, Saccharomyces cerevisiae and Aspergillus niger. The tested ferns could be used as cosmetic ingredients, as preservatives in food or in antimicrobial therapy.
African Journal of Plant Science, 2011
In this research, the occurrences of antimicrobial activity of some ferns were studied. The present paper dealt with the antimicrobial activities of some ethno-medicinally important ferns which were very common in West Mednapore District, as well as South West Bengal, against gram-positive and gramnegative bacterial pathogens. The plants were extracted with different solvents (70% ethanol, methanol and acetone) and controlled by deionized water (DW). Our experiment revealed significant results like Dryopteris, which showed remarkable antimicrobial activities among all the selected ferns.
Pteridophytes: evolutionary boon as medicinal plants
Plant Genetic Resources, 2016
Selective use of crude plant extracts has been the oldest ritual in ancient Indian Medicinal System ‘Ayurveda’, as well as in Traditional Chinese Medicine system for thousands of years. This has been well documented that herbal medicines of Chinese, Indian, Korean and Native American people had included bryophytes, lichens, lycophytes and ferns. Since antiquity, most of the ferns and fern allies have given many health benefits to ancient civilizations who had used them for food, tea and drugs. Modern approaches have combined multidisciplinary technologies and have specific chemical compounds extracted and identified for producing very particulate medicines from plant parts. Plants, which yield appreciable quality and quantity of polysaccharides, steroids, terpenoids, flavonoids, alkaloids and antibiotics are suitable for dragging out drugs for many ailments/diseases, including cancer treatments. Modern explorations on the functional activities of pteridophytes for human health by di...
A review of the use of pteridophytes for treating human ailments
Journal of Zhejiang University-SCIENCE B, 2018
The aim of this review was to explore the pharmacological activity of early tracheophytes (pteridophytes) as an alternative medicine for treating human ailments. As the first vascular plants, pteridophytes (aka, ferns and fern allies) are an ancient lineage, and human beings have been exploring and using taxa from this lineage for over 2000 years because of their beneficial properties. We have documented the medicinal uses of pteridophytes belonging to thirty different families. The lycophyte Selaginella sp. was shown in earlier studies to have multiple pharmacological activity, such as antioxidant, anti-inflammatory, anti-cancer, antidiabetic, antiviral, antimicrobial, and anti-Alzheimer properties. Among all the pteridophytes examined, taxa from the Pteridaceae, Polypodiaceae, and Adiantaceae exhibited significant medicinal activity. Based on our review, many pteridophytes have properties that could be used in alternative medicine for treatment of various human illnesses. Biotechnological tools can be used to preserve and even improve their bioactive molecules for the preparation of medicines against illness. Even though several studies have reported medicinal uses of ferns, the possible bioactive compounds of several pteridophytes have not been identified. Furthermore, their optimal dosage level and treatment strategies still need to be determined. Finally, the future direction of pteridophyte research is discussed.