• 한국연초학회지
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• 제4권1호
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• pp.1-5
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• 1982

The metabolic enzymes, nitrate reductase, amylase and peroxidase and the Photorespiratory enzyme, Slycolate oxidise in Nicotiana tabacum varieties were studied at various growth stages. The enzyme activities of young leaves with rapid growth were different from those of old ones with stationary growth. In young leaves, activity of nitrate reductase was higher than that in mature ones and amylase activity was fairly constant in all stages. Activities of glycolate oxidise and peroxidase were found to be significantly lower in young leaves than in mature ones. Activity of glycolate oxidase in mature middle leaves was 2.45 times higher than that of young ones and inhibited by 36% when the enzyme was treated with 0.16 mM isonicotinic hydrazide.

• Korean Journal of Acupuncture
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• 제35권3호
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• pp.117-122
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• 2018

Objectives : Most meridians have each well point located at the distal end of fingers or toes, congruous with their meridian courses. Exceptively, ST45(Yeotae), stomach meridian(ST)'s final point, is located at the lateral side of the tip of the second toe, while the tip of the second toe was not mentioned in the course of ST. So, we studied the course of lower limb region of ST. Methods : Courses of ST in Categorized Collection of Literatures on Chinese Meridians and Collaterals(CCM) was examined. The literatures included in CCM was selected as study subjects to be studied if the meridian route was different from "Youngchu" or more detailed notes were attached. There are 3 branches in lower limb region of ST, we analyzed theories of scholars of all time about the 3 branches of ST. Results and Conclusions : Branch 1 descends along the lateral margin of the fibula to the dorsum of foot, entering into the medial side of the middle toe. Branch 2 leaves ST36 separately, terminating at the lateral side of the middle toe. Branch 3 leaves ST42 and descends to the end of the great toe. The medial side of the middle toe equate to the lateral side of the second toe, and it is connected to ST45. So branch 1 is the main stream of ST. Branch 3 drives to the great toe passing between first and second toe, it goes medial side of LR2.

• 한국연초학회지
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• 제8권2호
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• pp.3-8
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• 1986

This study was carried out to investigate the effect of different soil moisture contents on the growth and chemical constituents of burley tobacco and on the protein pattern in tobacco leaf. Height, stem diameter, and largest leaf length of tobacco droughted from 45 to 60 days after transplanting was not recovered by rewatered amount of water supply from 60 to 75 days after transplanting, but leaf width enlarged. Dry weight per unit leaf area and total nitrogen content showed high values in low soil moisture, but total alkaloid contents were not different according to soil moisture contents. Soil moisture content didn't effect on the protein pattern of middle and upper leaves, but lower leaves showed the mild color and fewer numbers of the protein bands than those of midd1e and upper leaves.

• 한국작물학회지
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• 제41권6호
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• pp.692-697
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• 1996

담배의 생육단계 및 환경조건에 따른 duva-trlenediols와 cis-abienol의 함량을 조사하였던 바 얻어진 결과는 다음과 같다. 1. 담배생육 단계별 duvatrlenediols와 cis-abienol의 함량은 이식묘일 때 매우 낮았고 이식후 40일 후부터 많은 양이 생성되었다. 2. 담배생육 환경조건에 따른 duvatrienediols와 cis-abienol의 함량은 3$0^{\circ}C$ 인공광실이 가장 높았고 그 다음은 $25^{\circ}C$ 인공광실과 자연광실 그리고 18$^{\circ}C$ 인공광실은 매우 낮았다. 3. 자연광실에 재배된 연초는 도장에서 담배된 담배보다 duvatrienediols와 cis-abienol의 함량 이 높았다. 4. 개화기 때 엽위별 duvatrienediols와 cis-abienot의 함량은 하위엽이 가장 낮았고 중위엽과 상위엽은 비슷하였다. 5. 강우 전에 채취한 시료는 강우 후 즉시 채취한 시료 보다 duvatrienediols와 cis-abienol의 함양이 현저히 높았다.

• Journal of Forest and Environmental Science
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• 제19권1호
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• pp.18-24
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• 2003

이 연구는 가시오갈피 엽의 생리적 특성을 밝히고자 광합성, 기공증산, 기공전도도의 생리반응을 측정한 것으로 결과를 요약하면 다음과 같다. 1. 광보상점은 양엽이 약 $30{\mu}molm^{-2}S^{-1}$, 음엽이 약 $15{\mu}molm^{-2}S^{-1}$이었다. 2. 광포화점은 양엽이 약 $1,000{\mu}molm^{-2}S^{-1}$, 음엽이 약 $300{\mu}molm^{-2}S^{-1}$이었다. 3. 우리나라 및 중국산 가시오갈피 상엽의 순광합성속도는 약 $8.0-8.8{\mu}molm^{-2}S^{-1}$로 산지간에 유의차가 인정되지 않았다. 제주산 섬가시오갈피 상엽은 약 $6.9{\mu}molm^{-2}S^{-1}$로 다소 낮았다. 4. 모든 산지에서 중위엽의 순광합성속도는 상엽의 40-65%, 하위엽은 상엽의 30% 정도이었다. 그러나 섬가시오갈피 하엽은 상엽의 약 71%로 다소 높았다. 5. 상엽의 기공증산속도는 $1.1-1.4mmolH_2Om^{-2}S^{-1}$, 중위엽은 $0.7-1.0mmolH_2Om^{-2}S^{-1}$, 하위엽은 $0.5-0.6mmolH_2Om^{-2}S^{-1}$로 산지별로 유의차가 없었다. 6. 기공전도도는 상엽이 약 $70-90mmolH_2Om^{-2}S^{-1}$로 산지별 유의차가 인정되지 않았다. 그러나 제주 섬가시오갈피 상엽은 약 $380mmolH_2Om^{-2}S^{-1}$로 타산지보다 현저히 높았다.

• 한국연초학회지
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• 제16권2호
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• pp.128-133
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• 1994

This study was carried out to get agronomic information about the tobacco culture in paddy soil where incidence of grey tobacco leaves used to appearly uptake of iron, manganese and chlorine due to soil acidity and high water level. Application of lime to paddy soil(pH5.4-5.6) reduced content of iron, manganese known as proceeding materials giving rise to variegated grey tobacco after curing, compared with non-treatment. Grey leaves were found mainly at lower and middle stalk positions, and incidence of grey tobacco was lowered by application of lime in the well drained field but was not affected by level of fertilizer application. Amendment of soil acidity by lime tended to decrease chlorine and manganese content in leaves. Nicotine and mangenese content of leaves were lowered by reduction of one-quarter fertilizer level. In case of lime treatment, increase of yield reached to 4-6% comparing with those of non-treatment but price per kg was not affected. Reduction of N fertilizer level to three-quarters had the equal yield but high quality of leaf comparing with standard fertilization in paddy field.

• 한국작물학회지
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• 제50권spc1호
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• pp.204-207
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• 2005

본 연구는 최근 다양한 기능이 보고된 쑥의 eupatilin성분과 jaceosidin 성분 고함유 유전자원을 선발하고 기능성 작물로서의 개발가능성을 제시하고자 실험을 실시하고 그 결과를 요약하면 다음과 같다. 1. 12개 지역의 도서벽지에서 수집한 자생쑥을 분석한 결과 강화${\cdot}$백령도 지역의 수집 쑥에서 eupatilin과 jaceosidin함량이 높았다. 그 중 가장 높은 것은 강화의 싸주아리 쑥이었다. 2. 쑥의 채취시기별 함량을 분석한 결과 eupatilin과 jaceosidin 함량은 모두 5월 23일에서 6월 10일 사이 채취한 쑥에서 가장 높았다. 3 쑥의 식물체 부위별 함량을 분석한 결과, eupatilin 함량은 상위엽이 하위엽보다 2배가량 많이 함유되어 있었으나 jaceosidin 함량은 그 차이가 크지 않았다.

• 한국식품저장유통학회지
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• 제16권1호
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• pp.82-86
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• 2009

양파 구의 부위 및 크기에 따른 pyruvic acid 함량과 양파 식물체의 구, 엽초, 엽 및 엽서에 따른 부위별 pyruvic acid와 당 함량을 분석하여 변화양상을 관찰하였다. 그 결과 양파구의 하부에서 pyruvic acid 함량이 가장 높았고, 다음이 상부였으며 중간부분의 함량이 가장 낮았다. 인편에 따라서는 외피로부터 2번째 인편에서 가장 낮았으며 3번째 인편부터는 구의 내부로 갈수록 pyruvic acid 함량이 증가하였다. 생육기간 경과에 따른 구, 엽초부 및 엽의 pyruvic acid 함량은 구비대 초기에는 구에 비해 엽과 엽초부의 pyruvic acid 함량이 더 높았으나 수확기에 이르러서는 구의 pyruvic acid 함량은 다소 증가하였지만 엽과 엽초부는 큰 폭으로 감소하였다. 총당 함량은 구비대 초기에는 큰 차이가 없었으나 구가 비대되면서 구의 총당 함량은 큰 폭으로 증가하였고, 엽과 엽초부는 감소하였다. 그리고 엽서에 따라서는 바깥쪽의 오래된 잎에서 pyruvic acid와 총당 함량이 가장 낮았으며 내부의 어린잎으로 갈수록 높아지는 경향이었다.

• 한국생활과학회지
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• 제23권3호
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• pp.467-481
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• 2014

We investigated the effects of Mulberry leaves fermented enzyme liquid(MLE) addition on the quality of Kimchi which were fermented at $5^{\circ}C$ during 30 days. MLE was added to salted cabbage at concentrations of 0%(C), 0.4%(MLE1), 0.8%(MLE2), and 1.2%(MLE3) (w/w). pH in Kimchi added upon 1.2% of MLE, was higher than that of Kimchi without MLE after 12 days of fermentation. The titratable acidity was increased by the addition of MLE, and particularly Kimchi added 1.2% of MLE showed the slowest changed level. The degree of salinity were decreased in Kimchi with MLE as well as control group. However, MLE1 showed significantly lower salinity than MLE2, MLE3 and control group (p<0.001). L, a, b values of control group indicated significantly higher than the Kimchi with enzyme liquid concentrations(MLE1~MLE3). As compared with the control group, the cutting force in treated groups were increased during the fermentation period, and especially MLE3 showed the highest value of hardness. Moreover, that growth of lactic acid bacteria and total bacteria were inhibited by the addition of MLE. In the sensory assessment, the color, taste, and overall preferences were higher in MLE2 than control group and MLE1, MLE3. The acceptability of MLE as an additive in Kimchi among middle school students was higher than in the control sample, with an optimum additive of 0.8% MLE, based on the lowest volume of leftovers. Therefore, it was confirmed that addition of 0.8% MLE appears to be an acceptable approach to enhance the quality of Kimchi without reduction of acceptability.

• 생명과학회지
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• 제10권1호
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• pp.52-60
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• 2000

Up to now, there have been done much efforts in regard to nitrate reductase activity (NRA) of dicotyledonous herbs and important crop monocotyledons, but few to wild plants having canopy structure such as Carex. The objective of the present study are to determine: a) the optimum in vivo NR assay conditions for leaf samples of Carex species, b) changes of NRA according to section within leaf and leaf ages, c) diurnal variations. Optimized assay media of each Carex species were determined. NRA of C. rostrata adapted to oligotrophic habitats is readily saturated at lower substrate concentration than those of C. distans and C. gracilis, adapted to meso- and eutrophic habitats, respectively. All Carex species investigated have higher NRA in leaves than in roots. NRA of all species showed maximal values at the middle section of each leaf and in the youngest fully expanded leaves. Compared to C. gracilis, NR in leaves of C. distans was adapted readily to the light period. On the whole, Carex showed rather delayed diurnal variation. Even if the in vivo nitrate reductase assay based on nitrite estimation does not give an accurate estimation of total nitrate reduced, it still serves as a useful tool to find out relative differences in varying environmental conditions. Additionally, in vivo RNA measurements are helpful to understand nitrate reduction and basic nitrogen metabolism of Carex species having different canopy structure.