• Journal of Acupuncture Research
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• v.24 no.2
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• pp.73-81
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• 2007

목적 : 본 연구는 화피의 연골 보호 및 소염 진통 작용을 알아보고, 화피를 이용한 관절염치료 약침액 개발의 기초자료를 얻기 위해 고안되었다. 방법 : In vitro에서는 토끼 무릎관절에서 배양된 연골조직에 5ng/ml IL-1${\alpha}$ 처리 후， 화피의 연골보호 효과, 연골세포에 대한 독성을 조사하였다. In vivo에서는 토끼 무릎관절내 collagenase를 주입, CIA 유발 후, 28일간 매일 토끼의 구강으로 화피, 증류수, CEX를 투여하였으며, 연골보호, 소염, 진통에 대한 측정을 하였다. 결과 : 화피는 proteoglican 및 collagen분해 억제, MMPs 활성 억제로 연골 보호 효과가 있었으며, 연골 세포에 대한 독성이 없었다. 소염작용은 PGE2 생산 억제 및 COX-2발현 억제, carrageenan 유발 쥐 모델에서의 부종 억제로 확인되었다. 진통작용은 tail flick test에서의 latency time 증가, formalin test에서의 염증성 통증억제로 나타났다. 결론 : 화피가 퇴행성관절염에 대한 연골 보호 효과 및 소염 진통 작용이 있으므로, 이를 근거로 약침액을 개발 응용하면 퇴행성관절염 치료에 활용될 수 있다고 사료된다.

• Korean Journal of Plant Taxonomy
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• v.44 no.4
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• pp.238-241
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• 2014

A new species, Juncus baekdusanensis M. Kim (Juncaceae), has been named and described from Mt. Baekdu of the Korean peninsula. Juncus baekdusanensis shares several characters (terete leaf blades with leaf sheath auricles, between 1 and 2 flowered inflorescences, and 2 bracteoles) with its related species J. tenuis Willd. It is, however, distinct from J. tenuis which have 1-flowered inflorescences, green perianth, lanceolate perianth segments, acuminate perianth apexes, small capsules, and lowland grassland habitats by having 2-flowered inflorescences, reddish green perianth, ovate perianth segments, acute perianth apexes, large capsules, and highland swamp habitats.

• Journal of the Korean Society of Food Science and Nutrition
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• v.42 no.7
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• pp.1086-1095
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• 2013

This study investigated the quality characteristics, oxidative stability, and antioxidative activity of a Korean fried rice cake, Gaeseong-Juak (doughnut of waxy rice) to which Prunus yedoensis Matsumura (PYM) extract, vitamin C, and BHT were added and stored at $60^{\circ}C$ for 4 days. Gaeseong-Juak was prepared by adding PYM extract at 0, 0.5, 1, and 2% of waxy rice powder. It was found that as the content of PYM extract increased, L-values significantly decreased while a-value and b-value significantly increased (P<0.001). The hardness and adhesiveness were increased with an increase in PYM extract, and as the storage period increased. In the sensory evaluations, the sample containing 0.5% and 1.0% PYM extract gave good scores. In the Gaeseong-Juak with PYM extract, the acid value, peroxide value, and p-anisidin value of PYM extract groups were found to have a higher oxidative stability than those of 0% PYM extract group (P<0.05). The antioxidative activity of Gaeseong-Juak to which PYM extract was added increased as the content of PYM extract increased (P<0.001). It was suggested that the shelf life of Gaeseong-Juak could be extended by the use of natural antioxidants, reducing the deterioration of the quality of Gaeseong-Juak.

• Journal of the Korean Society of Food Science and Nutrition
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• v.42 no.4
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• pp.512-519
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• 2013

The antioxidant activities of ethanolic extracts obtained from medicinal plants (Scutellaria baicalensis Georgi, Acanthopanax sessiliflorum Seeman, Pueraria lobata Ohwi, Portulaca oleracea Linne, Crataegus pinnatifida Bunge var. typica Schneider, Euonymus alatus Apterus, Hovenia dulcis Thunberg, Prunus yedoensis Matsumura, Albizzia julibrissin Durazz., Chrysanthemum indicum Linne) were evaluated for total phenolic content, total flavonoid content, DPPH radicals, nitrites, $Superoxide^-$ radicals, $ABTS^+$ radical scavenging activity, and reducing power. Antioxidant capacities were the highest in Prunus yedoensis Matsumura for DPPH radical scavenging activity ($IC_{50}$ $5.39{\mu}g/mL$), reducing power (2.72, $A_{700}$), and nitrite scavenging activity ($IC_{50}$ $167.94{\mu}g/mL$). Hovenia dulcis Thunberg and Acanthopanax sessiliflorum Seeman were effective for their nitrite scavenging activities (over 90% at 1 mg/mL). The $Superoxide^-$ radical scavenging activity of Prunus yedoensis Matsumura ($IC_{50}$ $43.39{\mu}g/mL$) was stronger than tannic acid ($IC_{50}$ $46.51{\mu}g/mL$). Five samples (Prunus yedoensis Matsumura, Acanthopanax sessiliflorum Seeman, Hovenia dulcis Thunberg, Crataegus pinnatifida Bunge var. typica Schneider, Scutellaria baicalensis Georgi) were effective for their $ABTS^+$ radical scavenging activity (more than 90% at 0.5 mg/mL). These results suggest that the ethanolic extracts of Prunus yedoensis Matsumura could be used as a functional ingredient in food products.

• Korean Journal of Plant Taxonomy
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• v.46 no.3
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• pp.306-313
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• 2016

A new variety, Hosta clausa Nakai var. geumgangensis M. Kim & H. Jo, was found in Geumgang River in Korea. This variety shares several characteristics (rhizomes with underground stolon, smooth scape and purple-colored anthers) with the $re{\acute{o}}lated$ varieties H. clausa Nakai var. clausa and H. clausa var. normalis F. Maekawa. However, H. clausa var. normalis has open flowers, capsules with seeds, purple-spotted petioles, long pistils, and long narrow perianth tubes, whereas this new variety has open flowers, seedless capsules, green-colored petioles, short pistils, and short narrow perianth tubes. Hosta clausa Nakai var. clausa has closed flowers and seedless capsules.

• Applied Biological Chemistry
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• v.49 no.2
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• pp.145-148
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• 2006

Biological activities and application of Prunus sargentii Rehder were investigated. In the physiological activities, the electron donating ability (EDA) of ethanol extracts of Prunus sargentii Rehder was 85% in 100 ppm. SOD-like activity was inhibition about 50% in 1,000 ppm, it was gradual increased. As inhibitory effect of xanthine oxidase, it was more than 70% in 1,000 ppm and inhibitory effect of tyrosinase was a little low as 20% below 1,000 ppm.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.61 no.3
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• pp.222-226
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• 2016

This research was carried out to investigate the germination and seedling growth characteristics of the halophyte Suaeda asparagoides under various salt concentrations, temperatures, and the presence or absence of light S. asparagoides has a non-endospermic dicotyledonous seed structure that is go stone-shaped with a dark brown color and covered by a star-shaped perianth. Germination within the temperature range $5{\sim}40^{\circ}C$ varied from 8% to 65%. The highest germination occurred at $15^{\circ}C$. In seeds exposed to salt concentrations in the range 0~400 mM, the highest germination occurred at 0 mM, and the germination progressively decreased as the salt concentration increased. When the perianth of the seed was removed, the germination increased significantly. In the presence or absence of light, germination under white light was 5~20% higher than that under darkness, which varied according to salt concentrations in the range 0~300 mM. The plant growth of S. asparagoides, evaluated by plant height, branch number, root length, fresh weight, and dry weight, was higher in the concentration range 50~100 mM, and it decreased in the other concentrations. In conclusion, the seeds of S. asparagoides showed higher germination in fresh water at low temperature of approximately $15^{\circ}C$ under light when the perianth was removed, and the plant growth was higher at salt concentrations of 50~100 mM.

• Korean Journal of Plant Taxonomy
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• v.42 no.1
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• pp.1-12
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• 2012

To clarify the morphological variations of Galium, its morphological characteristics were examined using maximum parsimony analysis. The key characteristics as well as the range of variation in each characteristic were investigated at the species level and were employed to elucidate the relationships between the taxa. This study confirmed that species belonging to genus Galium formed a monophyletic group and comprised two main clades. Sect. Cymogaliae and sect. Leptogalium are polyphyly groups, and other sections are monophyletic group. This study also suggests that the fruit hairs, the types of petal apexes, and the colors of the petals are the most valuable taxonomic characteristics for differentiating different sections. The numbers of the leaves and leaf shape provide useful taxonomic characteristics for the identification of different species.

• Korean Journal of Plant Taxonomy
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• v.42 no.4
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• pp.316-323
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• 2012

Morphological characters of Adonis pseudoamurensis W. T. Wang and its related species were examined to illustrate its taxonomic entity, and their new key was made. As a result, it shows that A. ramosa Franch., an endemic species in Japan, was sparsely pubescent on the abaxial surface of the leaf and petiole, and its sepal was as long as its petal. However, A. pseudoamurensis is glabrous on the same surfaces and its sepal was shorter than its petal. In addition, A. multiflora Nishikawa et Ko. Ito was clearly distinguished in that it had acuminate leaf apices, linear shape of the final lobes of leaf and scales on the branched stem. Meanwhile, A. pseudoamurensis featured petiolate at cauline leaves and pubescent on pistils, and these characters were common with their allied groups. But diagnostic key characters suggested by the original description such as sessile at cauline leaves and glabrous on pistils were not observed in this study.

• Journal of Plant Biotechnology
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• v.30 no.1
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• pp.41-45
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• 2003

A study was under taken to investigate the appropriate explant sources of flower organ and suitable cultural conditions such as light, temperature, and sucrose in plant regeneration of Iris ensata culture. Explants of perianth, ovary, pedicel, and peduncle of Iris ensata were cultured at different daylength (0, 8, 16, 24 hour), different temperatures (10, 15, 25, 3$0^{\circ}C$), and sucrose concentrations (1, 3, 6, 9%) on MS medium. Formation of adventitious roots from explants of Iris ensata was effective in the dark, while that of adventitous shoots was effective in the light. The optimum daylength for young plant regeneration was 16 hours. The optimum temperature for shoot formation of Iris ensata explants was $25^{\circ}C$ but the formation at 10 and 15$^{\circ}C$ was ineffective. Especi-ally, perianth and ovary was effective in shoot formation from flower organ expants. T-he optimum concentration of sucrose for shoots and roots formation of Iris ensata explants was 3 and 6%, respectively.