• Natural Product Sciences
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• 제9권4호
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• pp.213-219
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• 2003

Five aromatic compounds, of which two are new glucosides, and six flavonols were isolated and identified for the first time from the flower heads and aerial shoots of Helichrysum conglobatum (Asteraceae). Their structures were established on the basis of chemical and spectroscopic methods including UV, MS, 1D- and 2D-NMR. Some fractions and isolates were screened for anti-microbial activities. This is the first report of the isolation of the chemical constituents of this species.

• 한국응용곤충학회지
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• 제56권3호
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• pp.309-314
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• 2017

시설딸기 주요 비행 해충인 꽃노랑총채벌레 Frankliniella occidentalis와 목화진딧물 Aphis gossypii 유시충, 온실가루이 Trialeurodes vaporarium에 대해 발생초기 파악을 위한 황색끈끈이트랩 이용기술을 규명하였다. 제주지역 농가 재배 3개소에서 5개년 동안(2013~2017년) 재배 전 기간(9월~이듬해 5월)에 걸쳐 조사한 트랩자료를 이용 분석하였다. 해충의 공간분포 특성은 일반적으로 이용하고 있는 Taylor's power law와 Iwao's patchiness regression으로 분석한 결과 대상 해충 모두 집중분포를 하고 있었다. 두 회귀식 중 꽃노랑총채벌레와 목화진딧물 유시충은 Taylor's power law이, 온실가루이는 Iwao's patchiness regression이 공간분포 특성을 잘 설명하고 있었다. 트랩당 평균밀도와 최고밀도, 11마리 이상 잡힌 트랩 비율 간에는 높은 상관관계를 갖고 있었다. 트랩당 평균 밀도 4.0마리를 추정에 필요한 최소 트랩수는 꽃노랑총채벌레 13개, 목화진딧물 유시충 11개, 온실가루이 10개이었다. 고정 정확도 0.25 수준에서 3종 해충의 Taylor's power law과 Iwao's patchiness regression 상수를 이용하여 축차표본조사 중지선을 구하였다.

• 복식
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• 제65권7호
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• pp.32-46
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• 2015

Treasures patterns are simplified designs of vessels used in everyday life, which were symbols of luck. Treasures patterns on textiles are largely assorted into four groups: eight auspicious patterns of Buddhism, eight immortal patterns of Taoism, seven treasures patterns of King Chakravarti in the Buddhist Scriptures and normal treasures patterns. Among them normal treasures patterns are most commonly used. Records in the Joseon documents show these patterns as being composed of seven treasures patterns or eight treasures patterns. But observation of the actual relics show that these patterns ranged from four to ten patterns. Korean traditional textiles treasures patterns began to appear in Korea on the relics of the last of Goryeo period. They were used as sub-patterns among main patterns of dynamically rising cloud patterns with five heads. Treasures patterns in the early Joseon period were commonly used as sub-patterns, and cloud and treasures pattern were prime examples of this. In the 16th century, lotus vine pattern, small flower vine pattern, or small flower pattern were often used as main patterns and treasures patterns were regularly used as sub-patterns. The robe of the Great Monk of Seo San was unique, in that both main and sub patterns consisted of the treasures patterns. From the 17th century, treasures patterns began to be used as main patterns. For example, a relic with eight alternatively arranged treasures patterns were found. Though there were still some cases where the patterns were used as sub-patterns, they begin to appear bigger than the previous period and became similar to main patterns in size. In the 18th and 19th centuries, there were various cases where treasures patterns were combined with flowers, fruits, animals, and letter patterns and used as main patterns. And there are many different methods of representing and developing the patterns.

• Journal of Applied Biological Chemistry
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• 제65권4호
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• pp.367-374
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• 2022

In recent years, research into medicinal herbs with antioxidative activities has increased. Chrysanthemum morifolium and Chrysanthemum indicum are aromatic herb plants and that have long been used in traditional Vietnamese medicine. This study aims to evaluate the chemical compositions and antioxidative activities of essential oils hydrodistilled from the flower heads of C. morifolium and C. indicum. The chemical compositions of the essential oils were compared using gas chromatography/mass spectrometry (GC/MS) analysis. The antioxidative activity was determined and evaluated spectroscopically by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, metal chelating activity, reducing power, and total antioxidant capacity assays. According to the GC/MS results, chrysanthenone was predominant in the essential oils of both C. morifolium (64.14%) and C. indicum (32.02%). This is the first report of the identification of chrysanthenone as a major constituent of the essential oil of C. morifolium. Both Chrysanthemum oils were also revealed to possess antioxidant potential, exhibiting high antioxidative activities. In particular, the DPPH radical scavenging activities of the C. morifolium and C. indicum oils at a concentration of 100 mg/mL were 76.9 and 83.2%, respectively. The metal chelating values of C. morifolium and C. indicum were 0.85 and 0.76, whereas the reducing power values of that at 100 mg/mL were 0.76 and 0.71, respectively. This study provides the chemical properties of the essential oils of both C. morifolium and C. indicum grown in Vietnam and their potential antioxidant capacity.

• 생물환경조절학회지
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• 제23권1호
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• pp.56-59
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• 2014

본 시험은 노지 재배시 아티초크의 정화뢰(생장점) 제거 처리가 생육 및 수량 특성에 미치는 영향을 구명코자 'Green Globe' 품종을 사용하여 정식 시기를 1차(2011년 9월 27일), 2차(2012년 3월 29일), 3차(2012년 9월 21일)로 달리하여 정화뢰 제거 유무처리구로 나눠 수행하였다. 1차 정식에서 화뢰특성과 수확화뢰수는 처리간 차이가 없었다. 정화뢰 무제거 처리구에서 화뢰중이 242.7g으로 제거 처리구 170.8g에 비하여 무거웠다. 수량에서도 정화뢰 무제거 처리구에서 1,249kg/10a으로 정화뢰 게거 처리구 997kg/10a에 비하여 25% 증가되었다. 2차 정식에서는 정화뢰 무제거 처리구와 제거 처리구의 화뢰중은 처리구간 차이가 없었으나 화뢰수에서 정화뢰 무제거 처리구에서 10.8개로 정화뢰 제거 처리구 8.2개에 비하여 증가하였다. 수량은 정화뢰 무제거 처리구에서 2,660kg/10a로 제거 처리구 1,848kg에 비하여 44%가 증가되었다. 3차 정식에서 정화뢰 무제거 처리구에서 화뢰중이 253.5g으로 제거 처리구 218.7g보다 증가하였다. 수량도 정화뢰 무제거 처리구에서 1,405kg/10a로 제거 처리구 1,148kg에 비하여 22%가 증가되었다. 이상의 결과 정식 시기를 달리했던 3번의 시험에서 정화뢰 제거 처리구에 비하여 무제거 처리구에서 수량이 증가하였다. 따라서 제주에서 아티초크 노지재배시 정화뢰를 제거하지 않고 재배하는 것이 재배 노력 절감은 물론 증수에도 효과가 있는 것으로 생각되었다.