• Journal of the Korean Society of Clothing and Textiles
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• v.24 no.8
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• pp.1167-1176
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• 2000

운동화 안감으로 사용되는 부드러운 천연 가죽의 내부 구조 및 쾌적성과 유사하게 개발한 3종류의 편성포에 관하여 수분 전달 능력을 비교 측정하였다. 편성포 표면에 이면으로 땀액의 이동성을 측정하기 위하여 새로운 실험 절차를 고안하여 측정한 결과, 편성포에 가한 압력은 수분 이동 능력에 영향을 미치지 않았다. 그러나 편성포의 기모가 있는 표면과 기모가 없는 이면의 수분 이동 능력이 달랐고, 3종류중 한 편성포에서는 표면의 기모는 수분전달을 저하시켰다. 표면은 기모, 이면은 평편조직으로 두껍고 무거운 편성포의 수분전달이 가장 좋았고 이 편성포와 같은 조직이면서 두께와 중량이 적은 편성포는 수분전달이 감소되었다. 수분이동 능력을 향상시키기 위하여 편성포의 섬유와 구조를 고려할 때 기모량은 중간 정도이고 기모된 표면을 수분에 접하도록 하는 것이 바람직하다. 이렇게 함으로서 더 효과적인 수분 이동이 이루어져서 피부 표면에서 땀증발이 좋았다. 이 연구에 사용된 실험 방법은 편성포의 수분 이동 체계에 관한 이해 증진에 기여할 수 있다고 본다.

• Journal of Sericultural and Entomological Science
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• v.29 no.2
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• pp.31-37
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• 1987

Mulberry leaf sprayed on at the various concentrations of cadmium (Cd) was fed on the just molted fifth instar through the 6th day of the fifth instar and content of cadmium and zinc in the feces, organs and tissues involved were analyzed by spectrophotometer. Along with the effect of those heavy metals on development of the relevant organs and tissues sexwise. 1. The residual content of cadmium on mulberry leaf was about 50% of the total cadmium and the weight of feces disposed from the cadmium fed larvae was less than the control. There was distinctive differences in female-wise disposal of feces between cadmium treatment and control ; cadmium treatment female larvae disposed less feces than female of control. 2. Fourteen percent of the total dry weight of the anterior plus the middle silkgland and of the posterior silkgland in cadmium 100ppm treatment was decreased in female but only 9% of the anterior plus middle silkgland in male was made, showing no decrease the weight of the posterior silkgland in male. 3. Decrease of the dry weight of the silkgland, fat body and hindgut was made in cadmium 100ppm treatment and contrarily the weight of midgut and malphihian tube were increased. The total larval weight of the female and male were decreasd in cadmium 100ppm treatment and the decreasing ratio was higher in famale. 4. There wasa no detection of cadmium in all of the organs and tissues of the control and in those of the cadmium treatment the high residual content was in order of the midgut, hindgut, malphighian tube and head. A slight accumulation of cadmium was shown in fat body and silkgland. 5. Cadmium accumulation in the midgut was higher than in female but in the fat body, malphighian tube, trachea and integument was contrarily high in the female than male. 6. The total zinc content of the larvae was below 60ppm in the control and 80ppm in cadmium 100ppm treantment. The increase of zinc content in cadmium treatment was made on silkgland, malphigian tube and midgut but contrarily the decrease of zinc content in fat body was resulted. 7. In cadmium treatment, much more cadmium accumulation took place in the female and zinc accumulation was made much more in the male.

• Korean Journal of Food Science and Technology
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• v.52 no.5
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• pp.555-559
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• 2020

In order to examine the toxicity of palatinose-L (Pal-L) bioconverted from sucrose, we performed a 14-consecutive day toxicity study with male and female Sprague-Dawley (SD) rats. We recorded clinical signs of toxicity, body weight, organ weights, hematology, blood biochemical, urinalysis, histological changes in organs, such as the liver and kidneys, and clinical chemistry analysis data for all SD rats. There were no significant changes in food/water consumption, body weight, and organ weights during the experimental period. Although there were some hematologic and urinalysis alterations, these changes were not considered toxicologically significant. In addition, histopathological examination of the liver and kidneys revealed no abnormal or toxicological changes between the control and Pal-L-treated rats of both sexes. Collectively, these results suggest that Pal-L was not indicated to have any toxicity in the SD rats when it was orally administered up to a dose of 1,000 mg/kg/day for 14 days.

• Journal of the Korean Society of Food Science and Nutrition
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• v.33 no.8
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• pp.1273-1278
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• 2004

The change of tissue lipid levels and fatty acid compositions in alloxan-induced diabetes was studied in rats (SD, male) in order to examine the pathway of diabetic complications. Rats were injected with alloxan 20 mg/kg BW or 40 mg/kg BW to induce diabetes. In rats injected with alloxan (40 mg/kg BW), the body weight was significantly decreased, food intake and liver weight per 100 g (BW) were significantly increased, compared with other groups. The blood glucose levels were apparently elevated as about 2 times in rats injected with alloxan (40 mg/kg BW) than the other groups. The concentrations of serum total cholesterol, triglyceride and HDL-cholesterol were not significantly different among the groups. However, the levels of serum triglyceride tended to increase according to amount of alloxan injected. Liver cholesterol levels were significantly decreased in rats injected with alloxan (40 mg/kg BW) compared with other groups, but triglyceride levels of those were not significantly different among groups. Concerning the fatty acid compositions of serum, liver, kidney, spleen phosphatidylcholine, the percentage of linoleic acid in rats injected with alloxan (40 mg/kg BW) was significantly increased, while that of arachidonic acid was significantly decreased compared with the other groups. Therefore, the ratios of arachidonic/linoleic acid in tissue phosphatidylcholine tended to be low in rats injected with alloxan (40 mg/kg BW) and especially significant low levels were found in serum and spleen. Thus, it was suggested that insulin deficiency can affect on fatty acid biosynthesis and induce diabetic complications.

• Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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• 2003.04a
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• pp.117.1-117
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• 2003

새송이 버섯은 맛과 향이 좋고 영양적으로 우수하여 성인병 예방과 개선 효과가 있다고 알려져 있으나 재배농가의 급증으로 인한 가격하락과 집중출하로 신선도의 하락 등이 문제가 되고 있어 새송이 버섯의 활용성을 향상시키고, 소비자의 기호를 충족시킬 수 있는 버섯류 가공품 개발이 요구되고 있다. 전통절임식품을 응용한 새로운 버섯류 장류절임 가공법을 개발하기 위하여 절임 전 처리에 따른 품질특성을 비교하였으며, 이를 위하여 먼저 절임 전처리 조건으로 블랜칭처리, 적정 염농도와 처리시간 및 탈염법을 개발하고 건조 등의 전처리에 따른 품질 평가는 수분함량, 염도, 색상, 조직감, 관능특성 등을 평가하였다. 새송이 버섯을 전처리하기 위한 블랜칭 처리조건은 7$0^{\circ}C$에서 10분간 처리한 구가 조직감이 우수하고 갈변이 적었으며 염 침지시간은 침지 72시간까지는 증가하였으나 그 이후로는 증가하지 않았고 4$0^{\circ}C$에서 탈염하는 것이 가장 우수하여 전처리 조건으로 선정하였다. 전처리 방법에 따른 중량변화는 블랜칭 처리가 약 10% 정도 중량이 더 많았으며 이 영향은 건조 후에도 지속되었다. 수분함량도 블랜칭 처리가 높았으며 염도 또한 건조 처리에 따라 높은 함량을 보였으나 블랜칭 처리를 병행했을 경우 낮은 값을 나타내었다. 조직의 강도는 무처리에 비하여 전처리를 함에 따라 많은 힘이 소요되어 질긴 조직 특성을 나타냄을 알 수 있다. 관능평가 결과 블랜칭 처리를 단독으로 실시한 B(B)처리구가 관능적 특성치 모두 높은 값을 보여 전처리 방법으로는 가장 우수한 전처리 방법임을 알 수 있었다.저온 장시간 처리한 경우에 비하여 낮은 수준이지만 약간의 증감 경향을 보이다가 고른 평형 상태를 유지하였다. 산소 농도는 저온 장시간 처리 직후 급격히 저하된 후 다시 증가하였으며 저장 7일 후에는 4$0^{\circ}C$ 3시간 처리구를 제외하고는 평형 상태를 유지하였다. 고온 단시간 처리구의 경우 처리 직후부터 저장 7일 후까지 고른 평형 상태를 유지하였다. 에틸렌의 경우 저온 장시간 처리구는 처리 직후 그 농도가 급격히 상승하였다가 저장 1일 후부터 대조구보다 낮은 값을 나타내었다. 고온 단시간 처리구의 경우 저온 장시간 처리구와는 달리 저장 1일 후부터 그 농도가 다소 상승되었다가 다시 감소는 경향을 보였다. 한편 열처리하여 냉각시킨 직후 및 저장1주 후 사과의 pH, 산도, 당도, 경도, 과육의 갈변도 등을 조사하였던 바 대조구 및 처리구간에 일부 항목에 있어서는 약간의 차이를 나타내었다. 대치할 수 있을 것이라고 사료된다. 수분함량은 기계적 검사보다 관능검사와 더욱 높은 상관관계를 나타냈다.내었다. 항균활성이 우수한 생약재를 농도별로 활성을 조사한 결과, 물 추출물과 10% Ethanol 추출물 모두 낮은 농도에서도 우수한 항균활성을 나타내었다.취와 함께 점질성 갈변물질이 생성되었다. 이와 같은 결과로 볼 때, BAAG의 처리는 BAAC의 경우보다 가격은 저렴하면서도 항균력은 우수한 천연 항균복합제재로써 농산물 식품원료에 적용하여 선도유지 기간을 연장할 수 있는 효과를 기대할 수 있었다. 과일 등의 포장제로서 이용할 가능성을 확인하였다.로 [-wh] 겹의문사는 복수 의미를 지닐 수 없 다. 그러면 단수 의미는 어떻

• Korean Journal of Agricultural Science
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• v.19 no.1
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• pp.51-64
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• 1992

This experiment was carried out to elucidate the effects of the thyroid function on lactation in female rats. One hundred and five female rats, whose body weight was approximately 250g with normal parturition, were divided into 3.5 THY, 35 PTU, and 35 CON. The $30{\mu}g$ L-thyroxine per rat was administered subcutaneously for the THY group with 3-days intervals arid 0.03% propylthiouracil solution was drunk for the PTU group. After the treatments body weight, thyroid weights and prolactin levels in serum, and histological changes in thyroid and mammary gland were investigated for 3 weeks with 3-days interval. The results obtained were as follows 1. The body weights of PTU group were lower than those of CON arid THY groups. The changes in body weights were significant between 3 and 6 days and between 15 and 18 days. 2. Differences in thyroid weight among the groups were significant after 9 days, The thyroid weights of PTU group were much higher than those of CON and THY group. 3. The follicular epithelia of PTU group after 6 days showed cuboidal phenomena which were accompanied by hypertrophy and hyperplasia, and this phenomena continued until post weaning period. Those of THY group after 9 days showed a squamous degeneration together with pyknosis. 4. The prolactin concentrations of THY group were higher than the other groups after 12 days. and those of CON group were higher than the others after 18 days. However, those of PTU group were lower all through the period. 5. The secretary epithelial cells of THY and CON groups became cuboidal after 12 days, but after 15 days the differentiation of mammary tissue was progressing in THY group faster than CON group. The degeneration of mammary tissue were observed in PTU group as time lapses, so after 15 days the exfoliation of secretory epithelium and atrophy of alveolus were recognized. 6. The body weights of offspring for all experimental groups were increasing as time lapses, but the values for PTU group were markedly lower than the others.

• Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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• 2003.10a
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• pp.179.2-180
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• 2003

본 연구에서는 과채류의 냉동냉장시 내부압력에 따른 조직파괴를 방지하기 위한 기초연구로 동결방법에 따른 내부압력 변화에 대하여 조사하였다. 과채류의 동결에 의한 중량감소율은 침지식 동결방식에서 0.44∼l.38% 수준으로 가장 적게 나타났으며, 동결방식에 따른 중량감소율 차이는 수박에서 가장 심하여 수분함량에 클수록 동결속도에 따른 효과가 비교적 크다는 것을 알 수 있었다. 동결속도에 따른 내부압력은 배, 사과 및 메론에 있어 침지식 방법에 의한 동결시 체적팽창 및 수축에 따른 내부압력 차가 가장 적게 나타났으며, 송풍식 동결에서 가장 크게 나타나 동결속도가 빠를수록 내압의 크기는 적다는 것을 알 수 있었으나 딸기 및 수박의 경우는 오히려 침지식에서 내압이 가장 크게 나타났다. 균온 처리하지 않은 동결에 있어 과일의 내부압력 변화는 약 2 psig수준인 반면에 균온 처리한 수박의 내부압력 변화는 균온 처리하지 않은 수박의 내부압력 변화 경향과 유사하지만 일정한 수준의 내압을 발생시킴으로써 내부압력의 크기도 약 1.3 psig수준으로 상당히 적게 나타났다. 또한, 해동시에 있어서도 균온처리한 시료의 내부압력 크기가 균온처리하지 않은 내부압력 크기보다 상대적으로 적게 나타났다. 균온처리 동결시, 다단계 처리보다는 3∼4회 수준의 일정한 균온 처리가 내부압력의 증감 폭을 줄일 수 있었다.

• The Journal of the Korea Contents Association
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• v.15 no.6
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• pp.529-538
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• 2015

This study was carried out to evaluate the acute oral toxicity of Corydalis turtschaninovii BESS. in Sprague-Dawley(SD) rats. Male and female rats were administered orally with Corydalis turtschaninovii BESS water extract. We measured the number of death by clinical signs and gross findings for 7 days. After 7 days, we measured the whole body and individual organs' weight. We also analyzed hematological changes. The result, no dead SD rats and no clinical signs were found during the experiment period. Also other specific changes were not found between control and treated groups in hematology and serum biochemistry. The results indicated that there were no significant changes of gross body and individual organs weight in SD rats. These results suggest that water soluble extract of Corydalis turtschaninovii BESS. has not acute oral toxicity in SD rats.

• Korean Journal of Medicinal Crop Science
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• v.15 no.1
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• pp.46-50
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• 2007

Transformed hairy roots were induced from in vitro grown plantlets of Trichosanthes kirilowii by infection with Agrobacterium rhizogenes strain ATCC15834. Transformed hairy roots exhibited active growth with high branching of roots on plant growth regulators-free medium. Cloned line (TR-03) of hairy root was tested for its growth and extracellular protein accumulation in medium under various culture conditions. Among the culture media tested, a full-strength MS medium had a pronounced effect on root biomass and extracelluar protein accumulation in medium. The maximum root biomass (2.4 g DRW/flask) and extracellular total protein contents $(28.3ug/m\ell)$ in medium was obtained at inoculum size of 2 g (FRW) and in MS medium supplemented with 4% sucrose. In addition, the optimal shaking speed for root growth and extracellular protein accumulation in medium were 100 rpm. The total extracellualr protein concentration reached a maximum of $28.3ug/m\ell$ at 4 weeks and decreased thereafter. Protein translation inhibitory activity was observed in culture broths and reached levels of 21.3 unit. These studies demonstrate that the transformed hairy roots can be utilized for the in vitro production of ribosome-inactivating proteins.

• Applied Biological Chemistry
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• v.40 no.2
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• pp.117-122
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• 1997

The conditions of cold storage of Citrus unshiu Marc. var. miyagawa produced in Cheju were investigated. Compared to the citrus fruits stored at room temperature, the content of soluble solids, total sugar, vitamin C and specific gravity decreased slightly on the fruits stored at $4^{\circ}C$ and 87% relative humidity. Decay ratio and weight loss were below 10% on keeping freshness relatively till late of March during cold storage. Weight loss, decrease of firmness and soluble solids occured gradually during cold storage. Nevertheless seal-packaging with 0.02 mm LDPE film or wax-coating of citrus fruits were effective on weight loss and appearance, decay ratio increased for long-term storage. It was needed to control humidity in cold chamber for preventing from decay and weight loss. Edible part ratio was decreased gradually by respiration, and peel and tissue of fruits were softened slightly by 60 days of cold storage. Decay ratio and weight loss of full-ripened citrus fruits were little during the storage for 100 days, compared to the fruits harvested early. Appearance and taste of citrus fruits stored for 4 month were good relatively, but decay occured rapidly on seal-packaging fruits putting out of cold room for a few days. Because of the difficulty of long-term storage for early variety of Citrus unshiu, the conditions and periods of cold storage would be determined after considering the physicochemical properties of fruits.