• Korean journal of applied entomology
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• v.37 no.2
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• pp.123-125
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• 1998

In peony fields located in Uisong and Yeongcheon distribution of Meloidogyne hapla was examined. Of 131 fields examined, M. hapla was isolated from 102 fields. In 57.8% of the infested fields, M. hapla density was higher 31 larvae1300 ml soil, the larval density isolated from upland fields were higher than those from paddy fields. Sandy loam soil harbored higher number of larvae than clay soil. Physio-chemical properties of soil might affect nematode population: High larval density was detected from those fields with low contents of OM, K+ and low pH. Fields infested with high larval densities required more lime than those with low or non infested fields.

• Korean Journal of Medicinal Crop Science
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• v.14 no.1
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• pp.27-30
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• 2006

Rodgersia podophylla was a native medicinal plant cultivated in Korea. During the search for a new whitening natural herb, we found that underground part of Rodgersia podophylla showed inhibitory activity against melanin biosynthesis in melan-a cells by brocking tyrosinase activity. In addition, this plant exhibited protective effect on UV-B region. These results suggest that underground part of Rodgersia podophylla might be used as whitening agent for the skin.

• Journal of Applied Biological Chemistry
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• v.65 no.4
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• pp.453-456
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• 2022

Phragmites communis rhizome (Phragmitis rhizoma) was extracted with 70% ethanol, and then the extract was fractionated sequentially using n-hexane, chloroform, and ethyl acetate as solvents. Among the solvent fractions of Phragmitis rhizoma extract, the polyphenol content in ethyl acetate fraction was the highest. The chloroform and ethyl acetate fractions possessed a good nitrite scavenging activity. In addition, each solvent fraction showed an effective lipid peroxidation inhibitory ability at a concentration of 10 mg/mL.

• KSBB Journal
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• v.23 no.5
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• pp.387-391
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• 2008

Green tea is popular plants in Asian countries and has become more widespread in western countries due to its taste characteristics and health benefits. Apart from green tea leafs, however, the use of root and seed of green tea tree has not intensively been investigated yet. In this study, the contents of mineral, vitamin, total amino acid, free amino acid, and total polyphenol (catechin, caffeic acid, and chlorogenic acid) of the root and seed of green tea tree were analyzed for the development of healthy foods. For minerals, potassium contents were 1,052 and 1,480 mg/100g-dry weight of root and seed, respectively. The order of mineral contents were as follows: K > P > Ca > Mg > Na > Fe > Mn > Zn > Cu in root and K > P > Na > Ca > Mg > Mn > Fe > Cu > Zn in seed. For vitamins, vitamin C contents were 5.72 and 6.05 mg/100g-dry weight of root and seed, respectively. The presence of more various kinds of vitamins were observed in seed than in root. For total amino acids, the contents were 1,651 and 4,335 mg/100g-dry weight of root and seed, respectively. The total amino acid contents of seed and root were higher than those in commercial green tea products. Especially the phenylalanine contents were 16 and 139 mg/100g-dry weight of root and seed, respectively whereas phenylalanine was not found in commercial green tea products. Concerning free amino acids, the bitter tasting amino acids such as arginine, valine and tryptophan were more abundant in root and the sweet tasting ones such as glutamic acid, alanine, aspartic acid, and serine were more abundant in seed. The total polyphenol contents were 237 and 81 mg/100g-dry weight of root and seed, respectively. The polyphenol contents in root were three times higher than that in seed so root may be a better source for antioxidant ingredients than seed. Among many polyphenols, catechin, caffeic acid, and chlorogenic acid were the top three major components.

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2008.11a
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• pp.193-197
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• 2008

까마중과 어성초의 에탄올 추출물의 기능적 특성을 검토하고, 환원력을 기준한 항산화 활성과 아질산염 소거능을 측정하였다. 추출액의 가용성 고형분은 까마중 잎>어성초>까마중뿌리>까마중 열매의 순이었으나 TFC함량은 어성초가 가장 높고 까마중의 경우 잎>열매>뿌리의 순이었다. 한편 항산화활성은 까마중 잎>어성초>까마중 열매>까마중 뿌리의 순이었다. 아질산염 소거능은 실험 pH범위에서 까마중 잎이 어성초 보다 높았으며, 모든 추출액에 대하여 낮은 pH에서의 NSA가 더 높은 값을 보였다.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2000.10b
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• pp.44-47
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• 2000

참외는 대부분 플라스틱하우스내에 소형터널을 설치하여 보온하는 형태로 재배되고 있으며, 연작하므로써 뿌리혹선충을 비롯한 각종 토양전염성 병해충의 피해가 많아지고 염류가 집적되는 등 재배상 많은 문제점이 발생되고 있다. 특히 참외를 장기재배하는 성주 등 경북지역에서는 뿌리혹선충으로 인해 생육이 불량하고(박 등, 1995a; 황 등 1999). 과실의 착과율이 떨어지는 등의 피해가 많이 발생되고 있다. (중략)

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2002.07a
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• pp.135-140
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• 2002

뿌리작물재배에서 수확작업은 노동 강도가 크고 비교적 많은 노동력을 필요로 하고 있다. 뿌리작물의 수확작업에 주로 전용수확기가 사용되고 있는데 전용수확기는 어떤 특정한 작물에만 사용되기 때문에 이용률이 비교적 낮다. 이런 이용률이 낮은 기계를 구입하는 농민의 입장에서 보나 이런 기계를 공급하는 기업의 입장에서 볼 때 어떤 특정한 작물의 수확에만 국한되지 않고 물성이 서로 다른 뿌리작물의 수확에도 이용할 수 있는 굴취기의 개발이 필요한 실정이다. (중략)

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1999.11a
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• pp.25-34
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• 1999

식물의 뿌리는 식물을 땅에 단단하게 고정하여 흐르는 물이나 바람으로 인해 식물이 씻겨 나가는 것을 막아주고 물과 영양분을 공급하여 식물의 생존을 가능케 한다. 또한 뿌리는 유기물을 공급하여 흙을 보존하고 토양 입자의 결속을 돕고 (Poincelot, 1986), 경사지 흙을 지탱하는 그물 역할을 하여 흙이 흘러내리는 것을 막아줄 뿐만 아니라 (Waldron, 1977), 땅속 깊이 파고드는 깊은 뿌리를 통하여 농기계 운행에 의해 다져진 토양층을 분쇄하는 역할을 한다 (Elkins 등, 1977). (중략)

• The Korean Journal of Soil Zoology
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• v.8 no.1_2
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• pp.27-31
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• 2003

This study has been conducted to assess and analyze the damage of Codonopsis lanceolata by differential inoculation levels of Meloidogyne hapla in pot and plot. As the density of M. hapla increased, early growth of C. lanceolata was inhibited 60% in vine and 54% in root. However, growth of C. lanceolata was not remarkably different by density of M. hapla in the plot test. This result may be attribute to low density of M. hapla in the plot.

• Journal of the Korean Arthroscopy Society
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• v.17 no.1
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• pp.71-75
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• 2013

Root tear of the posterior horn of the medial meniscus can occur from trauma or chronic degeneration, leading to meniscus extrusion, articular cartilage loss, osteophyte formation, and medial joint space narrowing. It is common on middle age with or without minor trauma. We experienced a case of medial meniscus posterior horn root tear in 13 years old boy during baseball game. We performed 1 direct suture anchor repair for medial meniscus posterior horn root tear in adolescent and report clinical result.