• 생약학회지
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• 제45권1호
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• pp.48-54
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• 2014

Alzheimer's disease is progressive neurodegenerative disorder by the loss of memory and learning abilities. Codonopsis lanceolata (C. lanceolata) is traditional medicinal plant used for the treatment of inflammatory diseases. The aim of study was to evaluate the effect of steamed C. lanceolata on scopolamine-induced memory impairment in the Morris water maze test and passive avoidance test. In addition, this study investigated the neuroprotective effects of steamed C. lanceolata on glutamate-induced cell death in HT22 cells using MTT assay. The results showed that steamed C. lanceolata (500 mg/kg body weight, p.o.) reversed spatial memory impairment by scopolamine in Morris water maze test and passive avoidance test. Steamed C. lanceolata attenuated memory impairment by scopolamine compared with common C. lanceolata. In addition, administration of steamed C. lanceolata significantly also reduced cell death. We suggest that steaming process more improve cognitive enhancing and neuroprotective effect of C. lanceolata than common C. lanceolata.

• 한국초지조사료학회지
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• 제27권1호
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• pp.37-44
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• 2007

병원균 감염에 의한 식물체내 프롤린과 암모니아의 농도 변화와 그것의 스트레스 생리학적 의미를 구명하기 위하여 Rhizoctonia spp.를 처리 후 라지 펫치에 감염된 잔디의 생육 및 관련 화학적 성분을 감염이 되지 않은 대조구와 비교하였다. 라지 펫치에 감염된 잔디의 뿌리의 건사율은 대조구에 비해 약 30% 증가하였다. 가용성 단백질 농도는 병원균 처리후 6일째 잎의 경우를 제외하고는 라지 펫치 감염에 따른 유의적인 영향이 없었다. 암모니아 농도 역시 라지 펫치에 감염된 잎과 줄기에서 공히 유의적으로 증가하였다. 프롤린 농도는 잎과 뿌리에서 대조구에 비해 각각 3.4 및 4.5배 증가하였다. 이러한 결과들은 잔디에 있어 병원균 감염에 따른 프롤린의 축적은 스트레스 강도를 나타내는 민감한 표지물질로서 의미가 있음을 제시한다.

• 아시안잔디학회지
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• 제13권2호
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• pp.71-78
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• 1999

The influence of increasing livel (0.0, 0.05, 0.1, 0.2, 0.4, 0.6, 0.8, 1.2, 1.6, and 2.0%) fo NaCl on the germination of red fescue (Festuca rubra) 'Sea Breeze', tall fesce(Festucaarundinacea) 'Pixie', creeping red fescue (Festuca rubra ssp. rubra) 'Cindy', annual rye-grass (Lolium multiflorum) 'Permer Ⅱ', perennial ryegrass (Lolium perenne) 'Pennant', fairway wheatgrass(Agropyron cristatum), creeping bentgrass (Agrostis palustris) 'Penncross', and kentucky bluegrass (Poa pratensis) 'Nuglade' was investigated. Red fescue 'Sea Breeze', tall fescue 'Pixie', and creeping red fescue 'Cindy' had greater than 90% seed germination at NaCl concentrations of 0.2% or lower, while showing similar seeding shoot and root lengths and TAA50 values as the control. Creeping red fescue 'Cindy'gave at 0.6% or higher NaCl. Perennial ryegrass 'Pennant' and annual ryegrass 'Permer Ⅱ' showed more than 95% seed germination when NaCl concentrations were 0.4% and 0.8%, respectively. Fairway wheatgrass, creeping bentgrass 'Penncross' and Kentucky bluegrass 'Nugade' had showing similar germination percent, shoot and root lengths and T50 values as the control at NaCl concentrations of 0.1% or lower. In general, germination percent and the lengthes of seedling roots and shoots of all species tested decreased as NaCl concentrations iscreased. The T50 values became greater as NaCl concentration increased. Seed fermination in red fescue 'Sea Breeze', tall fescue 'Pixie',perennial ryegrass 'Pennant', and annual ryegrass 'Permer Ⅱ' was compoetely inhibited at 2.0% NaCl. Creeping red fescue 'Cindy' and fairway wheatgrass gardly germinated at 1.6% MaCl. Creeping bentgrass 'Penncross' and Dentucky bluegrass 'Nuglade' showed a complete inhibition of germination at 1.2% and 0.6% NaCl, respectively.

• 농업과학연구
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• 제38권3호
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• pp.445-452
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• 2011

The object of this experiment was to investigate the food habits of Korean native goats fed with various roughage sources. The experimental trials were conducted at Unbong Animal Genetic Resources Station in 2008. The experimental roughages include five sources and 25 species in all; grasses and legumes: 5 species (mixed grasses, orchardgrass, tall fescue, alfalfa, white clover), native grasses and weeds: 5 species (mixed native grasses, Miscanthus sinensis Anderss, Arundinella hirta (Thunb.) Tanaka, Barnyard grass, short awn, forage crops and straw: 5 species (barley + hairy vetch, wheat + hairy vetch, rye silage, barley silage, baled rice straw), browse and fallen leaves: 5 species (Mixed browse, Oriental white oak, Quercus serrta Thunb., Oriental cherry fallen leaves, Japanese chestnut fallen leaves), and imported hay and straw: 5 species(timothy hay, tall fescue straw, annual ryegrass straw, klinegrass hay, alfalfa hay). Ten Korean native goats were selected which had nearly the same body weight (average $24{\pm}2.8$ kg). The chemical composition and dry matter digestibility of each roughage source and species were significantly different at the sampling area, plant species, growth stages and cutting period (p<0.05). Among all the 25 species of roughages, the favorite intake species order by Korean native goat was observed like this: Quercus aliena, Querancas serrta Thunb and Mixed browse, which was a lower intake compared to other domestic herbivores. The Korean native goats ate more roughages which had low fibrous contents, but high dry matter digestibility. The Korean native goats ate more roughages which had low fibrous contents, but high dry matter digestibility. On the other hand, compared to each roughage source, total intake amount by Korean native goats was showed as browse and fallen leaves (33.1%) among trials roughage sources. Based on these results, the food habit of Korean native goats seems to be closer to the browser.

• 농업과학연구
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• 제38권3호
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• pp.437-444
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• 2011

The object of this experiment was to investigate the food habits of sika deer fed with various roughage sources. The experimental trials were conducted at Unbong Animal Genetic Resources Station in 2008. The experimental roughages include five sources and 25 species in all; grasses and legumes: 5 species (mixed grasses, orchardgrass, tall fescue, alfalfa, white clover), native grasses and weeds: 5 species (mixed native grasses, Miscanthus sinensis Anderss, Arundinella hirta (Thunb.) Tanaka, barnyard grass, short awn, forage crops (hay, silages and straw): 5 species (barley + hairy vetch, Wheat + hairy vetch, rye silage, barley silage, baled rice straw), browse and fallen leaves: 5 species (mixed browse, oriental white oak, Quercus serrta Thunb., oriental cherry fallen leaves, Japanese chestnut fallen leaves), and imported hays and straws: 5 species (timothy hay, tall fescue straw, annual ryegrass straw, klinegrass hay, alfalfa hay). Five sika deer were used as experimental animals and the averaged body weight was 95+5.4kg. The chemical composition and dry matter digestibility of each roughage source and species were significantly different at the sampling area, plant species, growth stages and cutting period(p<0.05). The sika deer ate more roughages which had low fibrous contents, but high dry matter digestibility. Among all the 25 species of roughages, the favorite intake roughage sources ranking by sika deer was observed like this: browse and fallen leaves (32.2%), grass and legumes (27.0%), native grasses and weeds (22.0%), imported hays (12.9%) and forages crops (5.5%) respectively. Although, the sika deer ate more browse leaves, but ate more roughage which had low fibrous contents (NDF and ADF), but high drymatter digestibility. On the other hand, compared to each roughage source, total intake amount by sika deer was showed as browse and fallen leaves (32.2%). Based on the result, the food habit of sika deer seems to be closer to the typical browser.

• 한국작물학회지
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• 제47권1호
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• pp.48-53
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• 2002

To investigate the changes in the composition and pool size of carbohydrates under drought stress, white clover (Triforium repens L.) were exposed to -0.04 Mpa(well-watered, control) or to -0.12 Mpa (drought-stressed) of soil water potential during 28 days. Dry weight of leaves in drought-stressed plants was remarkably decreased by 45% within 14 days and 74% within 28 days compared to those of the control. Glucose concentration in drought-stressed plants was increased, while that of control was slightly decreased or remained at same level throughout experimental period. Fructose and sucrose concentrations in leaves were not significantly changed for drought-stressed plants, but those of the control were significantly decreased on plant after 14 days. Fructose and sucrose concentrations in stolon of control plants were sharply decreased, while that of drought-stressed plants was less varied. Those concentrations in roots were generally increased in drought-stressed plants. The concentration of total soluble sugars at 28 day was 438.0 and 632.6 mg $g^{-l}$ dwt. in control and drought stressed plants, respectively. Starch concentration of stolon and roots of control plants was significantly increased to 2.0 and 1.4 times of initial level, respectively, whereas those of drought stressed plants was nearly same level or slightly decreased compared to initial level.l.

• 한국환경농학회지
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• 제20권2호
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• pp.79-85
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• 2001

경기도 안성시 한경대학교에서 1999년 7월부터 11월까지 2주간격으로 대기중 OCPs를 측정하였다. 현재도 사용중인 것으로 보고된 endosulfan I과 II의 농도가 오래 전에 사용 금지된 다른 OCPs와 대사물질의 농도보다 훨씬 높았다. 그리고 모화합물인 heptachlor보다는 대사물질인 heptachlor epoxide가 더 높은 농도를 보였다. 이것은 이 성분이 사용된 지 상당히 되었지만, 환경중에서 독성이 강한 대사물질로 전환되어 잔류함을 알 수 있었다. 그리고 모든 OCPs는 가을보다 여름에 높은 농도를 보였다. 온도가 높은 여름에 air-surface exchange과 관련된 휘발작용으로 농도가 높아지고 온도가 낮은 가을에 농도가 감소함을 알 수 있었다. 그렇지만 endosulfan I과 II는 온도의 영향뿐만 아니라 사용량과 관련성이 있는 것으로 사료되었다.

• 한국유기농업학회지
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• 제9권2호
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• pp.55-67
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• 2001

본 논문의 목적을 위한 외인성 효소 즉 Phytase, $\beta$-glucanase, pentosanase는 전 세계적으로 양돈사료에 첨가제로서 광범위하게 사용하고 있다. 이러한 효소의 화학적 효과는 이해가 잘 되고 있다. 하지만 돼지에서 이러한 효소들의 효과에 대해서는 아직까지 논란의 여지가 있다. Phytase는 곡류내 존재하는 피틴태 인의 이용성을 증가시킬 수 있어 배설되는 분 중 인의 오염도를 낮출 수 있고 사료내 사용하는 무기태 인의 양을 감소시킬 수 있다. 또한, 보리와 귀리에 존재하는 $\beta$-glucanase와 호밀과 밀에 존재하는 용해성 Pentosans과 같은 효소들은 양돈사료에서 찾을 수 있는 항영양소 인자들을 분해하는 효과가 있다. 그래서 비전분과당류들의 소화율을 증가시키는 결과를 초래한다. 앞으로 이 분야의 연구는 현재 효소들의 효율적인 사용, 효과적인 다른 생산품의 개발 그리고 열 안정성 효소들의 개발들을 포함하고 있다.

• 한국작물학회지
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• 제46권4호
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• pp.272-278
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• 2001

To investigate of C and N metabolisms in response to phosphorus-deficient stress during regrowth of Italian ryegrass (Lolium multiflorum L.), C and N metabolites were analyzed at 0, 6, 12 and 24 days after defoliation. P-sufficient (control, +P) and P-absent (-P) nutrient solutions were applied from 7 days before defoliation, and continued for one cycle of 24 day-regrowth period. During 24 days of regrowth, dry matter of regrowing shoots and remaining tissues were not significantly different between +P and -P treatment. In remaining stubble, 70% to 91 % decline of the initial level (at day 0) in all C compounds occurred during the first 6 days of regrowth. Initial amounts of nitrate and amino acids in roots were significantly higher in the +P medium. Nitrate contents in stubble in the +P medium significantly decreased for the first 12 days and then rapidly recovered, while that of the -P medium continuously decreased until day 24. Amino acids in stubble in the P medium were continuously increased during the whole regrowth period. Soluble proteins in stubble in the +P medium also largely fell down (46.0% of the initial) for only the first 6 days, however the decline in the -P medium continued until day 12. In regrowing shoots, the accumulation of C compounds was significantly higher, while that of N compounds except amino acids was largely lower in the -P medium. These results showed a stimulation of carbohydrate synthesis and a compensatory utilization of organic reserves occurred to support regrowth under P-deficient condition.

• 한국초지조사료학회지
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• 제3권2호
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• pp.92-99
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• 1983

재료(材料)의 예건수준(豫乾水準)에 따른 건물함량(乾物含量)이 사일리지 품질(品質)에 미치는 影響(影響)을 알고져 1981년(年) 11월(月) 11일(日)에 호밀과 이탈리안라이그라스를 수확하였다. 예건(豫乾)에 의하여 재료(材料)의 건물함량(乾物含量)을 15.8%에서 53.2%까지 4수준(水準)으로 조절하였으며 사일리지는 폴리에틸렌필름봉지에 넣어 실온에 저장하였다. 1. 유기산(有機酸)의 함량(含量)은 재료(材料)의 건물함량(乾物含量)이 증가(增加)됨에 따라 감소(減少)하였으나 총산에 대한 유산(乳酸)은 증가(增加)하였다. 2. 건물손실(乾物損失)은 재료(材料)의 건물함량(乾物含量)이 증가(增加)함에 따라 감소(減少)하였다. 3. 사일리지의 품질(品質)은 건물함량(乾物含量)이 증가(增加)함에 따라 양호(良好)하였다. 4. 암모니아태질소는 건물함량(乾物含量)이 증가(增加)함에 따라 감소(減少)했다. 5. Invitro 건물소화율(乾物消化率)에는 건물함량(乾物含量)에 의한 차(差)가 없었다.