• 생명과학회지
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• 제8권4호
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• pp.381-386
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• 1998

This study was designed to observe the effects of the feeding Gentiana scabra Bunge var.buergeri Max. extract on the improvement of the blood glucose, lipids in the serum of streptozotcin(55mg/kg of body weight, I.P. injection) induced hyperglycemic rats (S.D. strain, ) fed the experimental diets for 4 weeks. Concentrations of blood glucose were significantly higher in the streptozotocin administration(I.P.) groups (group 2(streptozotcin+water), 3(streptozocin+Gentiana scabra Bunge extract), 4(streptozotocin+cholesterol+water), 5(streptozotocin+cholesterol+Gentiana scabra Bunge extract) than those in the control group(group 1(water)). Bolld glucose concentrations were rather lower in the group 3(streptozotocin+Gentiana scabra Bunge extract)than in the group 2(streptozotocin+water), and then those of the group 5 were rather lower than in the group 4. There was almost little significance among the groups. concentrations of total cholesterol in serum were lower in the group 5 than those in the group 4, and the group 3 were rather lower than in the group 2. Concentrations of LDL-cholesterol in serum were significantly lower in the group 3 than those 2. In the ratio of HDL-cholesterol concentrations to total cholesterol concentrations, Gentiana scabra Bunge extract administration groups were higher percentage than the other goups. Concentrations of free cholesterol and cholesteryl ester in serum were rather lower in the groups 3,5 than the other groups, and then those of the group were higher percentage than the other groups. concentrations of free cholesterol and cholesteryl ester in serum were rather lower in the groups 3,5 than the groups, and then those of the group 3 were significantly lower than in the group 4. Concentrations of triglyceride and phospholipid in serum were decreased in the group 3 than in the other groups. The activities of aspartate aminotransferase and alanine aminotransferase in serum were increased in the all experimental groups than in the control group. From the above research, the Gentiana scabra Bunge var.buergeri Max. extracts were effective on the improvement of the lipid compositions in serum of streptozotcin induced hyperglycemic and hypercholosterolemic rats.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2003년도 제10차 국제학술회의 및 추계정기 학술발표회
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• pp.20-20
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• 2003

Isolation and culture of leaf protoplasts from two chilli cultivars (Capsicum annuum var. accumnatum and Bird chilli) were developed to enhance selection process in the somatic hybridization programmes. In order to isolate the protoplasts from leaves of these two chilli cultivars different incubation periods (3, 5 and 10 hours) were tested with combinations of enzyme mixtures containing cellulase and macerozyme. Leaves were incubated on three enzyme mixtures (2% cellulase +0.4% macerozyme, 1% cellulase +0.2% macerozyme and 0.5% cellulase +0.1% macerozyme in 13% mannitol) at 251oC in the dark. Three hours of incubation using 2% cellulase and 0.4% macerozyme was the best for the protoplast isolation of both chilli cultivars tested. The yield was 5${\times}$108protoplasts/m1/g leaf tissue in both chilli varieties. It was found that in the mixed nurse method using Nagata and Takebe (NT) medium supplemented with 1.0mg/12,4-D, NAA and BAP with 0.5M mannitol and 1.2% Sea Plaque agarose is the best medium for protoplast culture. Protoplasts of Capsicum annum var. accumnatum were alive for 14 days forming cell walls and initiating cell division.

• 생약학회지
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• 제7권1호
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• pp.55-57
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• 1976

The callus formation of Glycyrrhiza glabra L. var. $glandulifera\;R_{EG}.\;et\;H_{ERD}$. in tissue culture was promoted on Murashige and Skoog's basal solution supplemented with 40g/l of sucrose, 1mg/l of kinetin and 5mg/l of 2, 4-D. The fresh and dry weights of callus and glycyrrhizin contents in callus of the Glycyrrhiza glabra L. var. $glandulifera\;R_{EG}.\;et\;H_{ERD}$. were determined monthly up to 12 months and obtained the results as follows: 1.The fresh weight of formed callus was increased rapidly from 2 to 4 months but growing rate of callus was slow from 4 to 6 months. This indicates that the cell division of callus was most active during the first $2{\sim}3$ months. 2. Glycyrrhizin contents in callus were also increased but the contents were not related to the increased weight of callus.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2003년도 심포지엄
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• pp.50-58
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• 2003

Isolation and culture of leaf protoplasts from two chilli cultivars (Capsicum annuum var. accumnatum and Bird chilli) were developed to enhance selection process in the somatic hybridization programmes. In order to isolate the protoplasts from leaves of these two chilli cultivars different incubation periods (3, 5 and 10 hours) were tested with combinations of enzyme mixtures containing cellulase and macerozyme. Leaves were incubated on three enzyme mixtures (2% cellulase + 0.4% macerozyme, 1% cellulase + 0.2% macerozyme and 0.5% cellulase + 0.1 % macerozyme in 13% mannitol) at 251oC in the dark. Three hours of incubation using 2% cellulase and 0.4% macerozyme was the best for the protoplast isolation of both chilli cultivars tested. The yield was 5 ${\times}$ 108protoplasts/ml/ g leaf tissue in both chilli varieties. It was found that in the mixed nurse method using Nagata and Takebe (NT) medium supplemented with 1.0mg/12,4-D, NAA and BAP with 0.5M mannitol and 1.2% Sea Plaque agarose is the best medium for protoplast culture. Protoplasts of Capsicum annum var. accumnatum were alive for 14 days forming cell walls and initiating cell division.

• 생약학회지
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• 제34권3호통권134호
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• pp.250-255
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• 2003

To develop Allium victorialis var. platyphyllum (Liliaceae) for an available functional food, pharmacological experiments on the extracts of this plant were undertaken in the rat treated with streptozotocin, poloxamer-407 and $CCl_4$. The two MeOH extracts were obtained from the leaves and the bulbs, respectively. The three agents, streptozotocin, poloxamer-407 and $CCl_4$, were treated to induce diabetes mellitus, hyperlipidemia and hepatic injury, respectively. Treatment with the leaf extract lowered blood glucose by 24.9% at 200 mg/kg (p.o.) in the STZ-treated rat and prohibited the increase of body weight, water consumption and food intake. This exσact also significantly decreased not only thε plasma cholesterol and triglyceride in the poloxamer-407-treated rat by 35.3% but also serum ALT by 49.0%. The potency was found by overall estimation on the experimental results as followings: 200 mg/kg leaf extract> 200 mg/kg bulb extract> 100 mg/kg leaf exσact> 100 mg/kg bulb extract. These results suggested that this plant might have the availability for a functional food. It was also suggested that the leaves are more effective than the bulbs for the functional vegetable, especially in hyperlipidemia and hepatic injury.

• Journal of Applied Biological Chemistry
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• 제60권1호
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• pp.49-54
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• 2017

본 연구는 천연 미백소재 탐색을 위하여 율무(C. lachryma-jobi var. ma-yuen) 부산물 추출물의 tyrosinase 저해활성을 검증하였으며, 그 중에서 뿌리 추출물은 $159.3g/{\mu}mL$의 $IC_{50}$ 값을 나타내었다. 율무 뿌리 추출물의 순차적 용매 분획에 대한 활성 검증 후 가장 활성이 우수한 EtOAc 분획물에 대하여 Diaion HP-20 column chromatography, MPLC및 preparative HPLC를 수행해 율무근으로부터 여섯 개의 화합물을 정제하였고, 이 물질들의 구조 분석은 LC-MS와 NMR 데이터 해석을 바탕으로 진행하여 각각 (+)-icariol $A_2$ (1), zhepiresionol (2), 4-hydroxybenzaldehyde (3), trans-${\rho}$-coumaric acid (4), N-(2-hydroxy-4-methoxyphenyl)-2-hydroxyacetamide (5), coixol (6)로 구조를 규명하였다. 화합물 1은 이 식물에서 처음으로 분리되었으며, 화합물 5는 자연계로부터 처음으로 분리된 화합물로 확인하였다. 이들 화합물 중 4-hydroxybenzaldehyde (3), trans-${\rho}$-coumaric acid (4)와 coixol (6)은 순서대로 707.4, 6.5, $62.4{\mu}M$의 $IC_{50}$ 값을 나타내어 대조군으로 사용한 arbutin ($IC_{50}=618.7{\mu}M$)과 비교시 유사하거나 우수한 활성을 확인하였다. 이로 미루어 보아, 율무근 추출물과 활성물질의 tyrosinase 저해활성을 확인할 수 있었으며, 율무근 추출물의 미백소재로서의 적용 가능성을 확인할 수 있었다.

• 한국응용곤충학회지
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• 제21권4호
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• pp.211-215
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• 1982

1981년 전북고창, 전남영광, 경북달성, 경남진양 지역에서 참깨병해의 발생과 피해를 조사한 결과 참깨역병의 피해가 가장 심하였다. 참깨역병의 발생은 포장에 따라 차이가 컸으며 발병이 심한 포장에서는 발병주율이 $61\%$나 되었다. 참깨역병을 일으키는 병원균 Phytophthora spp.는 유주자낭의 형태적특성과 참깨에 대한 특이적인 병원성에 의하여 Phytophthora nocitianae var. parasitica (Dastur) Waterhouse로 동정되었다. 참깨역병의 병징은 줄기가 암갈색으로 변색, 부패되어 식물체가 도태고사하는 특징을 보였다.

• Archives of Pharmacal Research
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• 제24권3호
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• pp.202-206
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• 2001

The effects of various sedative cyclopeptides and peptide alkaloids from the Zizyphus species on calmodulin-dependent $Ca^{2+}$ -ATPase and phosphodiesterase were Investigated. Calmodulin-induced activation of $Ca^{2+}$-ATPase was strongly inhibited by sanjoinine-A dialdehyde (IC_{50}$, 2.3$\mu\textrm{m}$), -Ah1 (IC_{50}$, 4.0$\mu\textrm{m}$), -A (IC, 4.6$\mu\textrm{m}$), and -G2 (IC_{50}$, 7.2$\mu\textrm{m}$), while calmodulin-induced activation of phosphodiesterase was strongly inhibited by both deachuine- S10 (IC_{50}$, 4.9$\mu\textrm{m}$) and sanjoinine-D (IC_{50}$, 9.0$\mu\textrm{m}$). The inhibitory activity of the various cyclopeptides and peptide alkaloids on $Ca^{2+}$-ATPase was found to correlate well with their Sedative activity.

• 식물조직배양학회지
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• 제24권3호
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• pp.143-148
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• 1997

모상근의 성장 및 tropane alkaloids의 생성에 미치는 pH, 서당, 비타민의 영향을 구명하기 위하여, 독말풀(Datura stramonium var. tatula Torr.)의 잎에 Agrobacterium tumefaciens $A_4$T를 접종하여 모상근을 유도하였다. 유도된 모상근 중 성장률이 양호한 clone (DTLA9)을 선발하고, 이를 pH, 서당, 비타민을 각각 여러 농도로 처리한 SH(Schenk and Hildebrandt, 1972) 기본배지에 배양하였다. 모상근의 성장에 있어 최적 pH는 6.3이었으며, 최적 서당농도는 3.0%이었다. Tropane alkaloids의 함량에 있어 최적 PH는 6.5이었으며, 최적 서당농도는 2.8%이었다. 한편, 비타민이 제거된 SH기본배지에 ascorbic acid, D-pantothenate, nicotinic acid, pyridoxine, riboflavin. 그리고 thiamine을 각각 농도별로 첨가하여 배양한 경우에, 모상근의 성장에 있어 비타민의 최적 농도는 각각 0.1, 0.003, 0.07, 0.002, 0.025, 0.01 mM이었다. Tropane alkaloids의 함량은 0.1 mM의 ascorbic acid 단독처리구에서 대조구(vitamin-free구) 및 SH기본배지에서의 경우에 비하여 가장 높게 나타났다.

• 한국산림과학회지
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• 제94권5호통권162호
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• pp.313-320
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• 2005

This study was performed in a 38-year-old Mongolian pine (Pinus sylvestris L. var. mongolica Litvin) plantation in northeast China. Data were collected from 5 sample trees with different canopy position ranging in DBH from 14.6 cm to 23.8 cm. Sawn speciments that included the biggest knot were taken from the stem below the living crown. Number and distribution of knots per whorl below the living crown were studied by relative height below living crown (RHBC). A linear model expressed as function of whorl age (AGE), whorl height ($H_k$) and the stem diameter at which the whorl was located ($D_k$) was developed to predict the knot diameter and angle. The number of annual rings in four periods and the width of respective zone alone stem were used as dependant variables to analyze the knot develop phases. In average, the number of years from branch birth to ceased forming rings was 7.8, the branches remained alive for 4.2 years without forming annual rings, and branches were occluded 14.4 years after their death. These results can provide abundance branch and knot information so as to describe current and past tree growth dynamic of Mongolian pine plantation.