• Journal of Applied Biological Chemistry
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• 제59권2호
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• pp.107-112
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• 2016

Pectolinarin was isolated from the ethyl acetate fraction of Cirsium setidens using open column chromatography and was analyzed using spectrometry. Pectolinarin content in Cirsium spp. was determined using HPLC/UV. Pectolinarin content in the aerial part of Cirsium spp. was higher than that in the root and pappus. Pectolinarin content was highest in the aerial part of C. chlorolepis (110.65mg/g extract). Consequently, the aerial part of C. chlorolepis has potential for use in new natural medicinal products, health supplements, and beverages.

• 약학회지
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• 제39권3호
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• pp.268-275
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• 1995

A novel polyacetylene was isolated from Cirsium spp., as well as five known ones, and its chemical structure was determined as heptadeca-1-en-11.13-diyne-8R, 9S, 10R-triol(1) on the basis of spectral data and chemical reactions. $^{1}$H-and $^{13}$C-NMR data of these polyacetylenes were completely assigned by the appfication of 2D-NMR techniques.

• 한국초지조사료학회지
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• 제11권2호
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• pp.68-75
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• 1991

A series of tests was carried out to determine the purity and germination of pasture plant and forage crop seeds imported in 1986 and 1987 at the grassland and forage laboratory, College of Agriculture, Seoul National University, Suweon. At the same time, the results obtained were compared with the National Livestook Cooperatives Federation(NLCF1's seed standards as a guide for determining seed quality. 1. The germination percentages of Potomac orchardgrass, Fawn tall fescue, Aquila Ky bluegrass and California ladino clover among grasses and legumes tested were lower than those of the N1,CF's standards, but the germination percentages of forage crops were higher than those of the NLCF's standards. 2. The purity of Potomac orchardgrass and Aquila Ky bluegrass were relatively lower than those of the NLCF's standards. 3. The percentages of other crop seeds in Potomac orchardgrass, Fawn tall fescue, Aquila Ky bluegrass and Cayuse oats were lower than those of the NLCF's standards. 4. Percentage of inert matter in the seeds was lower compared with the NLCF's standards except Akela ' forage rape. 5. The seeds of Potomac orchardgrass, NK 367 sorghum hybrid and sorghum x sudangrass hybrids such as NC+855, G83F and TE Haygrazer were contaminated with one or more weed seeds. Rumex spp. was by far the most common weed in the seeds imported. The other weeds occurred at a low level were Rumex acestosella, Senecio jacobaea, Cirsium arvense and Cuscicta spp. 6. There were many variations in 1,000 seed weight among different species. A thousand seed weight of Aquila Ky bluegrass was 0.263g, but that of Tetrone Italian ryegrass, Akela forage rape and Pioneer 3160 sorghum x sudangrass hybrid was 3.875, 3.476 and 242.4578, respectively. 7. According to the fluorescence test of ryegrass seed, Tetrone Italian ryegrass was known as a true annual type, but an unknown cultivar produced in Cheju was contaminated with 6% of perennial ryegrass seed.

• 한국잡초학회지
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• 제7권1호
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• pp.19-28
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• 1987

원활한 제초제실험(除草劑實險)을 수행(遂行)하기 위해서는 실험재료(實驗材料)로서의 잡초종자(雜草種子)가 년중(年中) 계속 공급(供給)될 수 있어야 된다. 본(本) 실험(實驗)에서는 25종(種)의 잡초종자(雜草種子)에 대하여 건조저온상태(乾燥低溫狀態)에서의 발아율(發芽率) 변화(變化)를 조사하고 몇 가지 종자(種子)의 간단한 발아유기방법(發芽誘起方法)을 검토(檢討)하였다. 1. 콩다닥냉이, 참소리쟁이, 엉겅퀴, 자귀풀, 여뀌바늘은 휴면(休眠)이 없거나 그 정도가 얕아 어떠한 처리 없이도 사용이 가능할 것으로 보이나 강아지풀 외(外 )기타종(其他種)에 대해선 발아촉진(發芽促進)을 위해 어떠한 처리가 요구되었다. 2. 농황산처리의 경우 당년에 채종(採種)되어 건조저온저장중(乾燥低溫貯藏中)인 바랭이, 쇠비름, 참비름, 피, 봄여뀌, 참방동산이, 자귀풀 종자(種子)를 각각 20분, 2분, 2분, 50분, 40분, 3분, 5분 처리함으로써 발아(發芽)를 유기(誘起)시킬 수 있었다. 3. 담수 및 습윤처리의 경우 피와 봄여뀌 종자는 각각 50일, 25일 담수처리에서, 알방동산이와 사마귀풀 종자는 각각 21일, 14일 습윤처리에서 발아(發芽)가 촉진(促進)되었다. 4. 농황산, 침종(浸種) 및 온도(溫度)의 혼합처리의 경우 바랭이는 그 효과가 적었으나 참방동산이는 농황산 3분 처리 후 0.2% $KNO_3$ 용액에 침종(浸種)하여 변온조건(變溫條件)에 두었을 때 가장 발아율(發芽率)이 높았다.