• Journal of Species Research
• /
• v.2 no.1
• /
• pp.69-77
• /
• 2013

One newly recorded species, Dryopteris namegatae, sect. Hirtipedes, was collected in forests in Jeju-do. Dryopteris namegatae (vernacular name: 'Tam-ra-top-ji-ne-go-sa-ri') was distinguished from other Korean congeners of sect. Hirtipedes of the genus Dryopteris by having stiff black scales on stipe and rachis, less narrowed base of lamina, and adaxial surface of pinna immersed along veins. Dryopteris hangchowensis ('Gak-si-top-ji-ne-go-sa-ri', new local name), recorded without any comments and description, was reexamined with similar taxa and was distinguished by smaller plants, brilliant leaves, many prominent fimbriate blackish scales on stipe and rachis, long-pointed apex of lamina and pinna, halfway-lobed pinna, and narrowest pinna. Descriptions and illustrations of the two species and their photographs in the habitat are provided along with a key to the species of sect. Hirtipedes of Dryopteris in Korea.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2010.10a
• /
• pp.657-659
• /
• 2010

Rhizoma of Dryopteris crassirhizoma, Root of Glycyrrhiza uralensis, Root of Sophora flavescens and Pericarp of Citrus unshiu were extracted with ethanol. The ethanol extracts of 4 medicinal plant were tested for the antimicrobial activity against Streptococcus mutans. The extracts of Rhizoma of Dryopteris crassirhizoma, Root of Sophora flavescens, Root of Glycyrrhiza uralensis showed antimicrobial activity against Streptococcus mutans. At the 300ug/disk concentration of the ethanol extract from Dryopteris crassirhizoma and Sophora flavescens showed significant antimicrobial activity against Streptcoccus mutans. These results suggested that the extracts from Dryopteris crassirhizoma could be the potential source of antimicrobial agents against S. mutans.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2011.10a
• /
• pp.934-937
• /
• 2011

As part of our screening of anticariogenic agents from medicinal plants, the ethanol extracts of 10 herbs widely used in the fork medicine were tested for the antimicrobial activity against a cariogenic bacterium Streptococcus sobrinus. The ethanol extracts of Dryopteris crassirhizoma showed antimicrobial activities against S. sobrinus. These results suggested that the extracts of Dryopteris crassirhizoma could be the potential source of antimicrobial agent against S. sobrinus.

• Korean Journal of Plant Taxonomy
• /
• v.42 no.2
• /
• pp.167-170
• /
• 2012

During the course of the execution of the project entitled Distribution Research of Rare Plants, we found the habitats of two rare ferns with obscure and/or extremely restricted distribution ranges, as previously unreported habitats. A subantarctic fern reported on Hamgyeong-do and Gangwon-do, Dryopteris coreano-montana Nakai, was found on Mt. Ibam in Jangseong-gun, Jeollanam-do. A subtropical fern reported south of Jeju-do, Dryopteris decipiens (Hook.) Kuntze, was newly found on Mt. Cheongwan of Jangheung-gun in Jeollanam-do.

• Biomedical Science Letters
• /
• v.13 no.3
• /
• pp.189-195
• /
• 2007

This study was carried out to examine antimicrobial substances from medicinal plants, the ethanol extracts of 38 medicinal plants were tested for the antimicrobial activity against Staphylococcus aureus ATCC 25923 and methicillin-resistant Staphylococcus aureus ATCC 43300. The extracts of Glycyrrhiza uralensis, Sophora flavescens, Dryopteris crassirhizoma, and Pinas densiflora showed significant antimicrobial activities against both S. aureus ATCC 25923 and methicillin-resistant S. aureus ATCC 43300. The extract of Dryopteris crassirhizoma among these medical plants showed the highest antimicrobial activity. These results suggested that the extracts from Dryopteris crassirhizoma, Sophora flavescens, Pinas densiflora, and Glycyrrhiza uralensis could be the potential source of antimicrobial agents against methicillin-resistant S. aureus and S. aureus.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2009.10a
• /
• pp.1087-1090
• /
• 2009

This study was carried out to research antimicrobial agents from medicinal plants, Glycyrrhiza uralensis, Dryopteris crassirhizoma, Dictamnus albus, Paeonia lactiflora, Angelica dahurica, Spirodela polyrhiza, Cimicifuga heracleifolia, Bupleurum falcatum, Magnolia kobus, Artemisia princeps, Arctium lappa, Aster tataricus, Hovenia dulcis, Citrus unshiu, Asparagus cochinchinensis, Gardenia jasminoides, Smilax china, Hovenia dulcis, Prunus sargentii, Scutellaria baicalensis. The ethanol extracts of 20 medicinal plants were tested for the antimicrobial activity against Agrobacterium tumefaciens. The extracts of Glycyrrhiza uralensis, Dryopteris crassirhizoma, Cimicifuga heracleifolia, Bupleurum falcatum showed antimicrobial activities against Agrobacterium tumefaciens.

• Korean Journal of Plant Taxonomy
• /
• v.34 no.1
• /
• pp.27-35
• /
• 2004

Three unrecorded fern species from the flora of Korea belonging to family Dryopteridaceae, Ctenitis maximowicziana, Dryopteris lunanensis, and D. dcipiens var. diplazioides, are found along the valley of Mt. Wolgak (alt. 275m) in Gwangju, Korea. C. maximawicziana is well distinguished from the rest of the species in the genus including C. sinii by the color and morphology of scales in basal part of petioles, shape of blades, and the presence of round-reniform shaped indusia. Dryopteris lunanensis is also well distinguished from its close relative, D. atrata, by the number of lateral pinnae, degree of division of first and/or second pinnules in lower pinnae of the blades, and distribution pattern of sori. Dryapteris decipiens var. diplazioides is distinguishable from type variety by degree of division in lower pinnae of the blades. In terms of morphology, var. diplazioides seems to be intermediate between a type variety and D. fuscipes.

• Korean Journal of Veterinary Research
• /
• v.48 no.4
• /
• pp.473-480
• /
• 2008

A high incidence of Anisakiasis has been reported in many countries where people eat frequently raw or undercooked seafood. Anisakis spp. larvae were obtained from the mackerel acquired from a fish market of Cheongju city. They were divided into several groups and placed in culture dishes containing RPMI-1640 (culture media), in the presence or absence of different concentrations of herbal extracts (Meliae ezadarach, Dryopteris crassirhizoma, Quisqualis indica var villosa). The objective of the present study was to investigate the activity of larval migration inhibition in vitro. Meliae ezadarach at the concentrations of 7.5, 15, and 30 mg/ml effectively inhibited the larvae migration in time-dependent manner during experimental period of 0-24 h. Treatment of Meliae ezadarach at the three concentrations completely inhibited the larvae migration in vitro. Dryopteris crassirhizoma at the concentrations of 5, 10, and 20 mg/ml also effectively inhibited the larvae migration in a time-dependent manner. The treatment of Dryopteris crassirhizoma for 12 h completely inhibited the larvae migration. The inhibitory effect of Dryopteris crassirhizoma was stronger than that of Meliae ezadarach. Although Quisqualis indica var villosa also showed the inhibitory effect on larvae migration, its inhibitory efficacy was the weakest among tested herbal extracts. These results indicated that some herbal extracts may be useful in controlling human anisakiasis.

• Journal of Food Hygiene and Safety
• /
• v.15 no.1
• /
• pp.36-40
• /
• 2000

This study was carried out to know the active faction of Dryopteris rhizoma on antimicrobial activity against some food spoilage microorganisms. Also, antimicrobial activities were investigated for the aqueous and ethanolic extracts of four herbs such as Teminaliae fructus, Eugeniae flos, Salviae miltior-rhizae radix and Dryopteris rhizoma. Antimicrobial activities of three herbs except for Terminaliae fructus showed higher activities in 75% ethanolic extracts than in aqueous extract. Ethanolic extract of Dryopteris rhizoma showed the highest antimicrobial activity among extracts of four herbs. Antimicrobial activity intensities of solvent fractions of Dryopteris rhizoma extracted by 75% ethanol were order to CHC1$_3$fraction>EtOAc fraction >BuOH fraction>$H_2O$ fraction. The CHC1$_3$, EtOAc and BuOH fractions also inhibited growth of food spoilage microorganisms as the concentration increased, respectively. In case of EtOAc fraction, 1000 ppm of fraction almost inhibited completely the growth of microorganisms tested.

• Journal of Korean society of Dental Hygiene
• /
• v.5 no.1
• /
• pp.123-130
• /
• 2005

This study was executed to evaluate the effects of natural herbal medicine extract on the antimicrobial activity and the artificial plaque formation. Schisandra chinensis, Sophora flavescens, Dryopteris crassirhizoma and Aristolochia contorta were extracted by 80% MeOH respectively and each concentration(5mg, 10mg, 20mg) of herbal medicine extract was tested to show the antimicrobial activity against S. mutans. To show the inhibition effect of herbal medicine extract on the artificial dental plaque formation each extract of 0.4% concentration was added into M 17 broth and inoculated with $5.0{\times}10^6$ of S. mutans. After 24 hour incubation each weight of artificial dental plaque was measured and compared with each other. Results obtained are as follows: 1. Dryopteris crassirhizoma showed very intense antimicrobial effect but Schisandra chinensis, Sophora flavescens and Aristolochia contorta showed a little difference against control. 2. Regarding artificial plaque formation inhibiting activity by each herbal extract at 0.4% concentration, Dryopteris crassirhizoma showed the perfect inhibition effect. Schisandra chinensis and Aristolochia contorta followed in order but Sophora flavescens showed the worst value. In conclusion, Dryopteris crassirhizoma showed strong antimicrobial effect against S. mutans and significant inhibiting effect on the artificial dental plaque formation.