• 한국염색가공학회지
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• 제10권6호
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• pp.55-66
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• 1998

In order to investigate the detergency effects of various detergents to stained polyester & cotton fabric with solid soils such as carbon black, liquid paraffin and fat, the optimum washing conditions according to the types of washing agent, the assesment of detergency effect by the measurement of reflectance after and before washing were studied. The detergency effect of various detergents to stained polyester and cotton fabric increased by using the mixtures of bleaching and enzyme detergent. In order to obtain the excellent detergency effect, 2-step treatment, the pre-washing with bleaching agent and bleaching-enzyme mixture detergent treatment is preferred. In comparison of the detergency to polyester and cotton fabric, it is assumed that the detergency to polyester stained fabric was superior than that to cotton stained fabric because of the difference of adhesive force between soil material and fabric in preparing solid stained fabric.

• Journal of Plant Biology
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• 제33권4호
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• pp.217-223
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• 1990

Restriction enzyme inhibiting substance (REIS) extracted from spinach chloroplast and Chlamydomonas seems not to be proteinaceous, because its inhibiting activity was not lost by heat or trypsin treatment. And it seems not to be lipid or polysacchride, because its inhibiting activity was not lost by lipase or $\alpha$-amylase treatment, respectively. In Chlamydomonas, putrescine, spermidine and spermine were present. The amount of putrescine was the smallest and that of spermie was the greatest. But only spermine was contained in REIS and the activity of REIS. It was proportional to the amount of spermine in REIS and it was hindered by Na+ ion. So, the inhibiting activity of REIS seems to be deeply related to spermine contained in REIS. But restriction enzyme inhibiting activity remained to the some extent although salts and spermine were eliminated by dialysis.

• 한국임상수의학회지
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• 제14권2호
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• pp.273-278
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• 1997

Several serum enzyme activities were measured after intraBeritoneal administration of 0.01 ml $CCl_{4}$ per 100 g of body weight in Sprague Dawley rats. Senun AST activity increased significantly after administration of CCl$_{4}$ (P<0.05). The serum AST activity at 2 hours after $CCl_{4} administration (475 {\pm} 10^{6} IU/L)$ was significantly higher than that of control group $(65 {\pm} 14 IU/L)$. The high level of serum AST activity maintained up to 48 hours. Serum ALT activity in $CCl_{4}$-treated groups was also significantly higher from 4 hours after treatment companied to control group and the high level maintained up to 48 hours. Serum ALP and ${\gamma} GTP activities in CCl_{4}$-treated groups were significantly higher from 8 hours after treatment compared to control group and the level maintained up to 48 hours.

• 약학회지
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• 제31권4호
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• pp.197-203
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• 1987

When pyrazinamide is used in the treatment of tuberculosis, the measurement of pyrazinoic acid which is an intermediate metabolite of pyrazinamide in body is required in order to prevent its associated side-effects, especially that of hyperuricemia. Effects of vitamin B$_6$ on pyrazinoic acid metabolism were studied in this experiment. The activity of hepatic pyrazinoic acid oxidizing enzyme in the presence of pyridoxal was powerfully inhibited, and the pattern was competitive inhibition type. Whereas, its enzyme activity was significantly increased by the treatment of pyridoxal, and the characteristics of the increase may include induction of enzyme proteins. As mice received pyrazinoic acid(300mg/kg) after pyridoxal-pretreatment(40mg/kg) once daily for 4 days, the blood level of pyrazinoic acid and uric acid was decreased significantly.

• Natural Product Sciences
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• 제18권3호
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• pp.141-146
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• 2012

Veronica peregrina (Scrophylariaceae) has been widely used as a Korean traditional medicine for the treatment of various pathological conditions including infection, hemorrhage and gastric ulcer. In the current study, we investigated the inhibitory effect of methanolic extracts of V. Peregrina (VPM) on the LPS-mediated nitric oxide (NO) production in mouse (C57BL/6) peritoneal macrophages. NO production was significantly down-regulated by the treatment of VPM dose dependently. To evaluate the mechanism of the inhibitory action of VPM on NO production, we performed iNOS enzyme activity assay and checked the change of inducible nitric oxide synthase (iNOS) levels by Western blotting. Although VPM did not affect iNOS enzyme activity, iNOS protein expression was attenuated by VPM indicating VPM inhibits NO production via suppression of iNOS enzyme expression. In addition, VPM attenuated the expression of another pro-inflammatory mediator such as cyclooxygenase-2 (COX-2) in a dose dependent manner. We also found that VPM can reduce trypsin-induced paw edema in mice. Based on this study, we suggest that V. peregrina may be beneficial in diseases which related to macrophage-mediated inflammatory disorders.

• 환경위생공학
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• 제5권2호
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• pp.103-110
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• 1990

For production of thermophilic and alkaline protease, Bacillus sp. strain AP-5 was isolated from a compost. The production of the protease was reached at maximum for 4 days at $55^{\circ}$ in standing culture. Chitin and Cellulose as carbon source, and Skim Milk as nitrogen source were favorable for the production of the enzyme. Optimal temperature and optimal pH of the enzyme was $55^{\circ}$ and 11, respectively. Metal ion didn't effect on the enzyme activity, the protease was very stable at heat treatment of 30 min at $55^{\circ}$.

• 한국식품과학회지
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• 제10권4호
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• pp.394-397
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• 1978

한우(韓牛)의 round muscle에 papain으로 일차(一次) 분해(分解)시킨 후 pepsin에 의한 in vitro소화율(消化率)과 소화과정중(消化過程中) 생성(生成)되는 amino 태(態)-N의 경분적(經分的)인 변화(變化)를 실험(實驗)한 결과(結果)는 다음과 같다. 1. 효소처리구(酵素處理區)가 대조구(對照區)에 비(比)하여 소화율(消化率)도 높았으며 소화시간(消化時間)도 단축되었다. 2. 효소처리구(酵素處理區)는 소화과정중(消化過程中) $6{\sim}10$분간(分間)사이에 소화율(消化率)이 현저하게 증가(增加)하였다. 3. amino태(態)-N는 소화율(消化率)과 소화시간(消化時間)에 거의 비슷하게 증가(增加)하였다. 4. 대조구(對照區)에 비(比)하여 효소처리구(酵素處理區)가 amino태(態)-N 생성량(生成量)이 현저하게 높았으며$2{\sim}8$시간(時間)사이에서 그 증가율(增加率)이 가장 높았다.

• Journal of Nutrition and Health
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• 제25권1호
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• pp.3-11
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• 1992

This paper examines the effects of dietary fats on the fatty acid composition and market enzyme activites during liver damage in 2-acetylaminofluorene treated rats. Weaning Sprague-Dawley male rats were fed the diet of beef tallow(BT source of sturated fatty acid) corn oil(CO source of n-6 fatty acid) and perilla oil(PO source of n-3 fatty acid) at the level of 15% fat. Ten days after feeding 2-acetylaminofluorene(2-AAF) was injected intraperitoneally twice every week at the level of 50mg/kg body weight for 7 weeks. Liver microsomal and cytosolic fractions were collected to determine the microsomal fatty acid composition lipid peroxide(malondialdehyde MDA) contents glucose 6-phosphatase(G6 Pase) activity cytochrome(Cyt) P-450 contents and cytosolic glutathione S-transferase(G6 Pase) activity cytochrome(Cyt) P-450 contents and cytosolic glutathione S-transferase(GST) activity. The fatty acid composition in microsomal fraction was reflected by different dietary fats. By 2-AAF treatment linoleic acids were increased regardless of the diet MDA contents were higher in CO group than it was in BT group. However 2-AAF treatment decreased MDA contents in all dietary groups. G6Pase activity of BT group was higher than those of the other gropus. CO group had the highest Cyt P-450 contents and 2-AAF treatment lowered Cyt P-450 contents only in CO gropu GST activites were higher in CO than in BT group whereas the enzyme activites were increased by 20AAF treatment in all dietary groups. These results suggest that dietary fats and 2-AAF treatment in all dietary groups,. These results suggest that dietary fats and 2-AAF treatment affect microsomal fatty acid composition The enzyme activities concerned with liver damage were influenced differently by dietary fats and 2-AFF treatment Although PO diet contains much more polyunsaturated fatty acids than CO diet PO diet doesn't cause more oxidant stress compared with CO diet in these data.

• 한국식품영양과학회지
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• 제32권8호
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• pp.1262-1269
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• 2003

효소류의 떡 노화에 미치는 영향을 검토하였다. DSC 열특성의 검토에서 호화개시온도는 GP(glucoamylase+pullulanase)로 처리한 경우가 71.1$^{\circ}C$로 가장 낮고 그 다음이 $\beta$-amylase, $\alpha$-amylase 순이었다. 또 호화최대온도는 효소 처리한 것이 대조구에 비해서 대부분 낮은 편이었으며 그 중 GP처리한 것이 가장 낮은 것으로 나타났다. 또 떡의 용융 enthalpy는 GP, $\beta$-amylase, $\alpha$-amylase 순으로 증가하였으며 GP의 용융 enthalpy값이 다른 경우보다 많이 낮게 나타났다. 재결정도는 GP의 값이 크게 낮은 것으로 나타났다. Avrami exponent(n)는 0.90 ∼ 1.20 범위에 있었으며 노화속도의 시간상수 1/k은 GP, $\beta$-amylase, $\alpha$-amylase, Control의 순이었다. 효소류를 첨가한 떡의 조직감은 대조구에 비해서 차이를 보였으며 종류별 효과는 GP, $\beta$-, $\alpha$-amylase의 순으로 나타났다. L＊ 값은 $\beta$-amylase를 제외하고는 모두 감소하고 a＊ 값은 효소간 5% 수준에서 유의차를 나타내었다. b＊ 값의 경우는 GP는 청색 방향으로, $\beta$-, $\alpha$-amylase는 반대인 황색 방향으로 변하였다. 효소 처리한 떡의 관능검사는 효소 처리한 것이 대조구보다 다소 높은 값을 나타내어 좋은 관능성을 보여주었다.

• Toxicological Research
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• 제13권3호
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• pp.183-186
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• 1997

Acute toxicity of pectenotoxin 2 (PTX2) was examined in mice. Treatment of mice with a toxic dose of PTX2 resulted in clinical signs such as ataxia, cyanosis and an abrupt decrease in body temperature. Histopathological studies revealed that the liver is the major target organ for PTX2. Activities of serum alanine aminotransferase (ALT), aspartate aminotransferase (AST) and sorbitol dehydrogenase (SDH) were significantly elevated by PTX2 administration. Glucose-6-phosphatase activities were not changed by the treatment. The PTX2 treatment decreased relative liver weight without changing the body weight. The effect of PTX2 on hepatic drug metabolizing enzyme system was determined. An ip dose of PTX2 (200 $\mu$g/kg) induced a significant decrease in the hepatic microsomal protein content. Cytochrome P-450 content, cytochrome b$_5$ content, NADPH cytochrome c reductase, aminopyrine N-demethylase activities, or hepatic glutathione content were not altered by PTX2 treatment.