• Journal of the Korean Applied Science and Technology
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• v.36 no.3
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• pp.985-994
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• 2019

Muberry (Morus alba L.) leaves fermented with Hericium erinaceum mycelium (MA-HE) were assessed for the protection against oxidative modification of antioxidant enzymes, Cu,Zn-superoxide dismutase(SOD) and ceruloplasmin(CP). MA-HE were shown to significantly inhibited oxidative modifications and inactivations of Cu,Zn-SOD and CP induced by peroxyl radical. Antioxidant activity of MA-HE evaluated using peroxyl radical scavenging assays. MA-HE showed 44.03% of peroxyl radical scavenging activity at $100{\mu}g/mL$. Thus, MA-HE protect the antioxidant enzymes from oxidative damage by the scavenging peroxyl radicals. The results suggested that MA-HE was effectively removed reactive oxygen species in cells, thereby protecting cytotoxicity caused by oxidative stress.

• Korean Journal of Weed Science
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• v.17 no.4
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• pp.431-438
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• 1997

The influence of deficient(7${\mu}M$) and suffcient(1000${\mu}M$) magnesium(Mg) supply on the content of mg, chlorophyll, protein and the activity of superoxide dismutase(SOD), scavengers of superoxide radical($O_2$), and ascorbate peroxidase(AP), $H_2O_2$scavenging enzyme, and glutathione redutase(GR) were studied in pumpkin(Cudurbita moscata $D_{UCHESNE}$) plants over a 11-day period. Over the 11 days Period of growth in nutrient solution with sufficient and deficient Mg supply, the contents of Mg, chlorophyll protein and the activities of the antioxidative enzymes remained more or less constant in Mg-sufficient leaves. In Mg-deficient leaves, the contents of Mg, chlorophyll and protein was seriously decreased with time, however the activities of SOD, AP and GR highly enhanced compared to those of Mg-sufficient. The results indicated the stimulative effect of Mg deficiency on toxic oxygen species and scavenging enzymes in plants.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2003.04a
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• pp.143-143
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• 2003

본 연구는 항산화효소의 효율적 생산을 위한 적절한 수확시기의 결정 및 산업적 가치를 검토하고자, 제주도에 자생하는 문주란 (Crinum asiaticum var. japonicum)에서 항산화효소 (SOD, peroxidase, catalase, APX) 활성과 isoenzyme 패턴의 계절적 변화양상을 조사하였다. SOD isoenzyme 패턴을 전기영동으로 살펴보면, 전체적으로 7개의 isoenzyme이 검출되었으며, 여름철과 겨울철에 있어서 뚜렷한 차이가 없을 뿐 아니라 일변화에 있어서도 큰 차이를 보이지 않았다. 그리고 이들 isoenzyme은 $H_2O$$_2$와 KCN에 의한 선택적 저해로부터 1개의 Mn-SOD와 6개의 CuZn-SOD로 구분할 수 있었다. Catalase는 단일밴드로 나타났으며, 여름철이 겨울철에 비해 높은 활성을 보였다. Peroxidase는 전체적으로 4개의 isoenzyme이 검출되었다. 이 중 peroxidase 1은 효소활성에는 차이가 있지만 여름철과 겨울철에 모두 검출되었으며, 3개의 isoenzyme (peroxidase 2-4)은 겨울철에만 특이적으로 검출되는 것으로 나타났다. 그리고 여름철에는 낮시간에 다소 높은 활성을 보였으며, 겨울철에는 낮시간보다는 새벽과 밤에 높은 활성을 보였다. APX는 8개의 isoenzyme이 검출되었으며, 여름철과 겨울철에 있어서 뚜렷한 차이를 보이지 않았다. 이상의 결과를 종합해보았을 때 SOD, catalase, peroxidase, APX 등 항산화효소의 산업적 생산을 위한 채취는 수확량을 감안하였을때 여름철이 적정 채취시기로 보인다. 그리고 문주란의 catalase와 peroxidase는 SOD나 APX는 달리 단일 밴드 또는 주요 밴드가 있고 높은 활성을 보여 정제시 유리하게 작용할 것으로 보인다. prospects will be also discussed.behaviors to ferromagnetic behavior was observed. Tunneling barrier called "decay length for tunneling" for the films having the thickness of Co layer from 1.4 to 1.6 nm was measured to be ranged from 0.004 to 0.021 ${\AA}$$\^$-1/.문에 기업간 관계를 연구하는 측면에서는 탐험적 연구성격이 강하다. 더 나아가 본 산업의 주된 연구가 질적이고 기업내부만을 연구했던 것에 비교하면 시초적이라고 할 수 있다. 또한 관계마케팅, CRM 등의 이론적 배경이 되고 있는 신뢰와 결속의 중요성이 재확인하는 결과도 의의라고 할 수 있다. 그리고 신뢰는 양사 간의 상호관계에서 조성될 수 있는 특성을 가진 반면, 결속은 계약관계 초기단계에서 성문화하고 규정화 할 수 있는 변수의 성격이 강하다고 할 수가 있다. 본 연구는 복잡한 기업간 관계를 지나치게 협력적 측면에서만 규명했기 때문에 많은 측면을 간과할 가능성이 있다. 또한 방법론적으로 일방향의 시각만을 고려했고, 횡단적 조사를 통하고 국내의 한 서비스제공업체와 관련이 있는 컨텐츠 공급파트너만의 시각을 검증했기 때문에 해석에서 유의할 필요가 있다. 또한 타당성확보 노력을 기하였지만 측정도구 면에서 엄격한 개발과정을 준수하지는 못했다. 향후에는 모바일 컨텐츠 파트너의 기업의 특성을 조사하여 관계성 변수와의 상호관련연구를 진행할 필요가 있다. 관계기간, 의존성, 거래처의 단/복수여부, 서비스 범주 등의 제반 변수를 고려하여 이러한 변수가 양사와의 관계성 변수에 어떤 영향이 있는가를 검증할 필요가 있다. 또한 신뢰, 결속 등 다차원의 개념

• Korean Journal of Weed Science
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• v.16 no.4
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• pp.346-353
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• 1996

To study the effects of metal ions on the activities of antioxidative enzymes, the activities of superoxide dismutase(SOD), peroxidase(POD), catalase(CAT) of Persicaria vulgaris has been studied after treating with Cd, Cu, Zn and Al. 1. The activities of SOD in leaf and stem were decreased, but that in root was increased. Among the metal ions studied in this report, Al gave the highest increase in SOD activity in root. 2. The activities of POD after treating with Cd or Cu did not show any significant differences. POD activities after treating with Zn and Al has been decreased, however, that in root showed increased activities after treating with Zn 5,000 ppm or Al 500 ppm. 3. The activity of CAT in leaf was decreased with every metals studied. The CAT activity in root was increased with increased concentration. The root treated with Al showed highest activity. 4. The presence of isozymes after treated metal ions has been studied in gel electrophoresis. The POD treated plant did not show any new isozymes, but the intensity of one of pre-existent band was increased. The SOD treated plant showed the several new isozymes.

• Proceedings of the Korean Society of Food and Cookery Science Conference
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• 2003.05a
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• pp.105-105
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• 2003

본 연구는 쇠고기 분쇄육에 천연항산화제인 pycnogenol, catechin 및 $\alpha$-tocopherol과 합성항산화제인 BHT를 처리한 후 3, 5, 7, 10일 동안 냉장저장하면서 색도 및 pH, TBA 값 및 지방산 조성의 변화와 항산화효소인 SOD 및 catalase 활성의 변화를 검토하였다. 명도는 catechin 처리군이 저장에 따른 색의 변화가 가장 작았으며, pH는 처리 당일 5.83~5.87의 비슷한 수준이었으나 저장함에 따라 저하되어 5일째에는 대조군이 약 0.45 수준으로 크게 감소한 것에 비하여 항산화제처리군은 약 0.2 수준의 감소로 대조군과 큰 차이를 나타냈다. (중략)

• Journal of Korean Biological Nursing Science
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• v.23 no.3
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• pp.247-255
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• 2021

Purpose: The goal of this study was to see how different aerobic exercise intensities affected AMP-activated protein kinase (AMPK), reactive oxygen, and antioxidant enzymes in young mice during an 8-week period. Methods: Forty male C57BL/6 mice, aged seven weeks, were randomly assigned to one of four groups: control (n=10), low-intensity exercise (n=10), moderate-intensity exercise (n=10), and high-intensity exercise (n=10). For eight weeks, aerobic activity was performed once a day for 35-40 minutes, five days a week. The data were analyzed using descriptive statistics, analysis of variance (ANOVA), chi-squared tests, and the Tukey test in the SPSS/WIN 25.0 program. Results: Weight (p=.001) was substantially different between the moderate-intensity exercise group and the control group in AMPK (p<.001). In addition, there were no significant differences between the moderate-intensity exercise group and the control group in reactive oxygen malondialdehyde (MDA) levels (p=.136) and antioxidant enzyme superoxide dismutase (SOD) levels (p=.521). Conclusion: These findings suggest that moderate-intensity aerobic exercise increased AMPK activation and helped young mice shed weight.

• Journal of The Korean Society of Grassland and Forage Science
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• v.27 no.2
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• pp.137-144
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• 2007

To investigate the effect of large patch infection on oxidative stress induction, super-oxide dismutase (SOD), catalase (CAT) and peroxidase (POD) were compared between pathogen-infected and healthy (control) zoysiagrass. The sampling for leaves and roots were carried out every 2 days for a period of 6 days. The SOD activity was not significantly affected by pathogen-infection until day 2, but significant increase of both leaves (+48%) and roots (+49%) were observed at day 6 compared with control. The CAT activity was remarkedly increased by +25% in leaves and +101% in roots within the first 2 days and then rapidly decreased. The POD activity in pathogen-infected leaves was significantly increased by 74% at day 6. The increase of POD activity in pathogen-infected roots was 2-fold higher than that of the control at day 6. These results indicated that large patch-infection induce oxidative stress, and that SOD-CAT-POD antioxidant system of zoysiagrass was effectively operated.

• Korean Journal of Poultry Science
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• v.50 no.2
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• pp.109-118
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• 2023

Four-d-old broiler chicks were randomly assigned to 3 groups with 9 replicates (8 birds/cage) under high ambient temperature; birds fed a basal diet (CON), a basal diet supplemented with 0.25% of probiotic complex (LPB, 1 × 10⁶ Lactobacillus plantarum, 1 × 10⁶ Bacillus subtilis, and 1 × 10⁶ Saccharomyces cerevisiae) and 0.5% probiotic complex (HPB). Immediately after 28-d feeding trial, 6 birds having average body weight per group were sacrificed for evaluating the effects of probiotics on antioxidant parameters in the serum, intestine, and liver of birds. As results, serum biochemical parameters of nitrogen components including total protein, albumin, urea nitrogen, and glutathione were unaffected by dietary probiotics. In addition, serum superoxide dismutase (SOD), glutathione peroxidase (GPX), and glutathione S-transferase (GST) activities, and lipid peroxidation (MDA) were not changed by dietary probiotic supplement in birds. In the intestinal mucosa, SOD activity in the HPB group significantly (P<0.05) increased compared with that in the CON and the LPB groups. Lipid peroxidation in the HPB group significantly (P<0.05) decreased compared with that in the CON group. However, there was no statistical difference in GPX, and GST activities in the intestinal mucosa among treatment groups. In the liver, the activities of SOD, GPX, and GST, and the level of MDA were unaffected by probiotic supplement. In conclusion, 0.5% of probiotics significantly increased SOD activity and decreased lipid peroxidation in the intestinal mucosa, suggesting that probiotic complex could be potential to improve the small intestinal antioxidant capacity of bird under high ambient temperature conditions.

• Journal of the Korean Society of Food Science and Nutrition
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• v.38 no.4
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• pp.423-429
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• 2009

This study was conducted to investigate the effects of pine (Pinus densiflora) needle extracts on hepatic antioxidative system in rats fed high-cholesterol diet. Eight-week old Sprague Dawley rats were divided into four groups; normal diet group (CON), 0.5% cholesterol diet group (0.5% CHOL), 0.5% cholesterol diet and pine needle extracts prepared by using hot water group (HOT water), and 0.5% cholesterol diet and pine needle extracts prepared by using sub-supercritical $CO_2$ group (Sub-supercritical). The serum ALP, AST, and ALT activities were increased by 0.5% cholesterol diet supplementation, but treatment with pine needle extracts showed decrease compared with 0.5% CHOL group. The SOD activity in liver at 0.5% cholesterol diet group was more decreased than control group while Sub-supercritical group had significantly higher SOD activity than 0.5% CHOL group. Moreover, groups with pine needle extracts supplementation had higher level of GPx in liver than 0.5% cholesterol diet group. These results suggest that pine needle extracts increased antioxidative activities.

• Korean Journal of Plant Tissue Culture
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• v.22 no.2
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• pp.71-76
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• 1995

The effects of light on the activities of several antioxidative enzymes, catalase (CAT), superoxide dismutase(SOD), ascorbate oxidase(AO), and peroxidase(POD) were examined in the hairy root cultures of Phytolacca esculenta van Houtte induced by Agrobacterium tumefaciens $A_4$T. Activities of CAT, SOD, and AO were significantly decreased with incresing light intensity (500-2,000 lx). The activity of AO under high light condition (2,000 lx)was decreased by 92% compared to the dark condition. The activities of glutathoine peroxidase (GPO), ascorbate peroxidase (APO) and general POD were increased under lower light intensify below 500 lx. The activity of GPO under 2,000 lx was decreased by 85% compared to the dark condition. The activities of antioxidative enzymes were more decreased in blue light (400-500nm). The activities of antioxidative enzymes in blue light intensity were increased in lower light intensity below 30 lx, but decreased 21-70% under 200 lx. The activity of AO was decreased by 70% under 200 lx with increasing blue light intensity. Our results suggest that the activities of antioxidative enzymes in hairy roots might be inhibited by endogenous oxidants generated under the high blue light conditions.