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        검색결과 14

        1.
        2009.04 KCI 등재 서비스 종료(열람 제한)
        This study was performed to compare alcohol fermentation ability and saccharification of potatoes and sweet potatoes. Cooperated with ultrasonification process is not contain pass through cook process, but contain process using ulrasonification instead cook process. In result of sugar contents measurements sweet potato and potato was highest of a family at 6 hours fermentation, and it showed the highest sugar contents as each 11.5 brix, 10.4 brix. In result of alcohol contents measurements of sweet potato and potato, highest of a family in 4 days, and it showed th highest alcohol contents as each 8.2, 6.0%. Finally complex enzymes II process revealed similar activities like cook process.
        2.
        2009.04 KCI 등재 서비스 종료(열람 제한)
        This study was performed to enhance anticancer activities of E. sinica, and A. gigas by ultra high pressure extraction process. The cytotoxicity of E. sinica and A. gigas on human kidney cell (HEK293) was as low as 24.94% and 25.3% in adding 1.0 mg/ml of the sample extracted at 500 Mpa for 15 minute. Generally, the inhibition of cancer cell growth on A549 and MCF-7 was increased over 20% in the ultra high pressure samples, compared to the conventional extraction process. Under the extracts from ultra high pressure process showed not only the strongest anticancer activities, but also had better stability than normal extracts. It was also found that the extracts of A. gigas reduced the hypertrophy of the internal organs, such as adrenal and spleen caused stresses in several mouse models.
        3.
        2009.04 KCI 등재 서비스 종료(열람 제한)
        This study was performed to improve antioxidant activities and skin-whitening effects of Rubus coreanus Miquel extracts by nano-encapsulation. R. coreanus was extracted at 60℃ and encapsulated by lecithin and gelagine. Nano-encapsulated extracts showed highest free radical scavengering effect as 97.62% in adding sample (500 μg/ml), compared to the extracts from conventional processes. It was showed strong inhibition effect on melanin production test by Clone M-3 cells as 55.23%. High inhibitory potency on tyrosinase was also measured as 155.8% by adding nano-sample of 1 mg/ml. The improvement of biological activity was demonstrated by real time confocal microscope. We could consider that the water soluble extracts of R. coreanus could be definitely enhanced by nano-encapsulated as a potent natural resources for antioxidant and skin-whitening agent.
        4.
        2009.02 KCI 등재 서비스 종료(열람 제한)
        This study was performed to improve immune activities of Rubus coreanus Miquel by encapsulation of nanoparticles. Immuno-activities of R. coreanus were investigated through aqueous extracts associated with process of water at 60℃. It showed high promotion of human B and T cells growth about 50%, compared to the case of other conditions. The secretion of IL-6 and TNF-α was also enhanced as 2.44×10-4pg/cell and 1.94×10-4pg/cell, results by adding nano samples. NK cell activation was improved up to 29% higher than the conventional extraction process. The secretion of NO from macrophage showed 14.9 μm on the nano-encapsulation process extracts, which was higher than others. The size of nanoparticles was in the range of 50~300 nm, which can effect the penetration into the cells. It was clearly observed by real time confocal microscope.
        5.
        2008.12 KCI 등재 서비스 종료(열람 제한)
        This study was performed to investigate a methodology of improving immune activities of Berberis koreana Palibin by ultra high pressure on low temperature extraction process. Extraction yield was enhanced up to more than 35% by above process, compare to the control and extraction average. The cytotoxicity on human kidney cell (HEK293) was showed below 20.4%, 21.6% in adding 1.0 mg/ml of the highest concentration. Generally, the extracts by ultra high pressure extraction process showed less toxicity about 5% than the other processes. It could tell that toxic materials that existing in the plant could be reduced or broken by ultra high pressure process due to can be broken bond such the hydrogen bond, the electrostatic bond, the van der Waals bond, and the hydrophobic bond, can be broken by high pressure. The result could be employed to develop a new type of functional food from B. koreana Palibin by low temperature high pressure process.
        6.
        2008.12 KCI 등재 서비스 종료(열람 제한)
        This study was performed to investigate antioxidant activities and glutathione S-transferase (GST) activity according to parts of the Acer mono and A. okamotoanum. Most extracts showed high scavenging activities on DPPH. Especially, the bark of A. okamotoanum showed higher activity as 98.4% than the control, BHA as 96.5%. A. mono and A. okamotoanum showed high ability on nitrite scavenging, but decreasing tendency according to decreasing of pH. On SOD-like test, the wood of A. okamotoanum showed highest activity as 35.4% at 1.0mg/ml concentration. Also, the extracts obtained high activity on GST test. Therefore, the water extracts from the bark of A. mono and A. okamotoanum have relatively good antioxidant activity and GST activity. Especially, the bark of A. okamotoanum showed the highest activity on all of extracts, could be the use of functional foods and biomaterials.
        7.
        2008.12 KCI 등재 서비스 종료(열람 제한)
        This study was performed to investigate improving immune activities of natural water-soluble sulforaphane extracted from Brassica oleracea var. italica by nano encapsulation process. The nanoparticles of the sulforaphane extracted with ultrasonification process at 60℃ promoted human B and T cell growth, about 7~35% compared to the control. The secretion of IL-6 and TNF-α from T cells were also enhanced as 2.6×10-4pg/cell and 2.1×10-4 pg/cell, respectively, by the adding nano samples. NK cell activation was improved about 8%, compare to the control in adding cultured medium of T cell added nano samples. It was also found that sulforaphane extracted from B. oleracea var. italica had highly inhibitory activity on hyaluronidase as IC50 about 200 μg/ml. It can be concluded that natural water-soluble sulforaphane samples by nano-encapsulation, each size is 200 nm, extracted from B. oleracea var. italica has high immune activities through higher efficiency of bio-activation than conventional extracts.
        8.
        2008.12 KCI 등재 서비스 종료(열람 제한)
        This study was performed to compare effect of immune activities of Rhodiola sachalinensis by various extraction process with different temperature and extraction solvents. Experiments were performed for investigate the immune activities on human B and T cell growth and secretion of their cytokines. Also, antibodies in serum were investigated in female ICR mouse by feeding the extracts of R. sachalinensis at doses of 40, 120 and 360 mg/kg orally for 15 days. The immune cell growth and secretion of cytokines (IL-6, TNF-α) on human B and T cells were increased by adding R. sachalinensis extracts compare to the control. Also, total serum IgG levels increased by feeding R. sachalinensis extracts. It can be conclude that optimum condition for efficient extraction of R. sachalinensis as functional material is slovent extraction process using water with ultrasonification at below 100℃ than typical process.
        9.
        2008.10 KCI 등재 서비스 종료(열람 제한)
        곰의말채의 항암 및 면역활성을 탐색하고자 수피, 목부, 잎의 부위별 메탄올 추출물을 이용하여 연구를 수행하였다. 인간 정상 신장세포를 이용한 세포독성 실험에서 모든 추출물이 1.0mg/ml 농도의 첨가를 통해 대략 25% 이하의 세포독성을 나타내었다. 폐암세포인 A549와 유방암세포인 MCF-7을 이용한 항암실험에서 수피 추출물이 1.0mg/ml 농도의 첨가를 통해 각각 57.4%와 58.7%의 생육저해 활성을 보였다. 모든 추출 시료가 면역세포인 B세포와 T세포의 생육을 촉진하였는데, 특히 수피 추출물 첨가를 통해 B세포와 T세포의 생육이 5일째 대조군과 비교하여 각각 38.7%와 58.7%까지 증진되었다. 면역세포 분비물인 IL-6와 TNF-α의 분비량 측정에서도 수피 추출물 첨가군이 1.28×10?4 pg/cell, 1.38×10?4 pg/cell를 나타내며, 각각 0.86×10?4 pg/cell, 0.70×10?4을 나타낸 대조군에 비하여 유의적인 증가를 나타내었다. 또한 면역세포 분비물 첨가를 통한 NK-92MI세포 생육 증진에도 효과를 나타내는 것을 확인하였다. 이로써 곰의말채 추출 성분이 항암 및 면역활성에 유용한 성분을 함유하고 있으며, 특히 수피 추출물이 유의적으로 높은 활성을 나타내는 것으로 사료된다.
        10.
        2008.10 KCI 등재 서비스 종료(열람 제한)
        치콘 및 엽채류의 저장기간 연장을 위해 천연보존제 및 천연항균제 선정을 위한 항균실험을 실시하고 후박 추출물이 미생물 최소 저해 농도 및 집락 형성 저해능이 높음을 확인하였다. 이를 엽채류에 도포함으로써 이들의 저장기간을 연장시키고자 수용성 추출물의 활용성을 극대화 할 수 있는 식용 나노입자를 제조하고 전자현미경 관찰 및 image anlyzer 측정을 통해 후박 추출물 나노입자의 80% 이상이 300nm 이하 크기로 형성되었음을 확인하였다. 투과전자현미경을 이용한 관찰을 통해서도 수십 nm ~ 약 500nm 범위의 유사 구형 나노입자임을 확인하였으며, 엽채류 저장기간 연장 효과를 알아보고자 이 나노입자를 치콘 표면에 분무 도포하였다. 전자현미경을 통한 치콘 표면 촬영으로 도포된 후박 추출물 나노입자가 표면에 잔류하고 있음을 확인하였으며, HPLC 분석을 통해 후박 추출물을 서서히 방출하고 있음을 확인하였다. 나노입자를 도포한 치콘과 무처리 대조군의 저장기간에 따른 에틸렌 발생량을 GC로 측정한 결과, 입자를 도포한 치콘에서 초기 에틸렌 발생량이 높으나 저장기간에 따른 에틸렌 생성량의 증가를 억제해 7일 이후에는 발생량 자체도 적어졌음을 확인할 수 있었다. 이는 후박 추출물의 나노입자가 치콘의 세포호흡을 효과적으로 억제하는 것을 확인한 것으로 나노입자의 처리를 통해 저장기간의 연장효과를 나타내었다.
        11.
        2008.10 KCI 등재 서비스 종료(열람 제한)
        본 연구는 병풀의 초음파 추출 시 용매에 따른 면역활성 증진 효과를 탐색하고자 수행되었다, 각 추출공정의 수율 비교에서 초음파 공정을 병행한 60℃ 에탄올 추출이 일반 100℃ 물 추출에 비해 15% 높은 수율을 나타냈으며, 에탄올을 용매로 한 추출이 동일한 조건의 물 추출에 비해 모두 높은 수율을 나타냈다. 이는 용매의 극성과 용출되는 병풀 내 성분의 극성에 기인하는 것으로 사료된다. 인간 정상 섬유아세포인 CCD-986sk를 이용한 세포독성 측정을 통해 모든 병풀 추출물이 32% 이하의 세포독성을 나타냈다. 인간 면역 B, T세포의 생육도 측정에서 초음파를 병행한 60℃ 에탄올 추출물이 무첨가 대조구에 비해 10%의 증진 효과를 나타내었으며, 면역세포의 cytokine 분비량 측정에서도 IL-6, TNF-α의 분비를 각각 4.86 × 10-4 pg/cell과 5.73 × 10-4 pg/cell로 나타내 증진 효과를 나타냈다. 또한, 초음파 병행 에탄올 시료를 첨가한 면역 T세포의 분비물에 의한 NK 세포 활성에서도 10%의 생육증진효과를 나타내었다. 이를 통해 병풀의 에탄올 추출물이 면역 활성을 가지고 있으며 초음파 공정을 통해 활성의 증진이 나타날 수 있음을 확인하였다. 이는 에탄올 용매를 통해 병풀 유용성분의 용출이 증진되고, 초음파 공정을 통해 병풀 유용 성분의 수율 향상 및 유용성분의 변화, 신규물질 용출 등이 일어나기 때문인 것으로 사료된다.
        12.
        2008.08 KCI 등재 서비스 종료(열람 제한)
        본 연구에서는 초고압 추출 공정의 활성 증진 효과를 알아보기 위해 당귀의 자외선 차단 효과 및 피부 미백활성 실험을 실시하였다. 인간의 섬유아세포인 CCD-986sk를 이용한 세포독성 실험에서 1.0mg/ml 농도의 시료 첨가를 통해 초음파 병행 60℃ 추출물이 21.27%로 가장 낮은 세포독성을 나타내었으며, 15분간 초고압 처리한 60℃초음파 병행 추출물이 23.49%로 가장 높은 세포독성을 나타내었다. UVA 처리에 따른 MMP-1 발현 저해 효과 측정에서 1.0mg/ml 첨가를 통해 15분간 초고압 처리한 60℃ 초음파 추출물이 UV를 조사하지 않은 대조군과 비교하여 122.2%를 나타내며 양성대조군인 ascorbic acid의 121.3%와 근사한 수치의 발현 억제 효과를나타내었다. 그 외 다른 시료들도 134.5% 이하로 발현하며 높은 저해율을 나타냄에 따라 당귀가 UVA에 대한 MMP-1 발현 저해 효과가 있음을 나타내었다. Tyrosinase 억제효과에서는 양성대조군인 ascorbic acid가 1.0mg/ml의 농도에서 70.8%로 가장 높은 저해율을 나타내었다. 당귀 시료 중에서는 초고압을 15분간 처리한 60℃ 초음파 추출물이 ascorbic acid에 근사한 수치인 69.4%로 가장 높은 저해율을 나타내었고, 그외의 시료들도 모두 55% 이상의 높은 저해율을 나타내었다. 시료 첨가를 통한 Clone M-3 세포주의 melanin 생성 억제실험에서 1.0mg/ml 농도 첨가를 통해 15분간 초고압 처리한 60℃ 초음파 추출물이 82.4%를 나타내어 양성대조군인 ascorbic acid에 비해 더 높은 활성을 나타내었다. 이상의 결과를 통하여 당귀가 자외선 차단 및 피부 미백 관련 향장 소재로의 활용 가능성이 있으며, 초고압 처리를 통해 향장활성의 증가가 가능함을 확인하였다.
        13.
        2008.02 KCI 등재 서비스 종료(열람 제한)
        Immune-potentiation of Chicorium endivia L. were investigated on follows extracts associated with ultrasonification process at 60 kHz and showed the highest promotion of human B and T cell growth, about 10~20% compared to the control. The secretion of TNF-α and IL-6 was also enhanced by the addition (0.5mg/ml) of the extracts. NK cell activation was Improved up to 1.37 times higher than the control, through adding extracts. It was also found that extracts from C. endivia L. could yield higher nitric oxide production from macrophage than Lipopolysaccaharides (LPS). It can be concluded that, in general, the extracts treated with ultrasonification has higher immune activity than others, possibly by higher yielding immune-modulatory activity than conventional extraction process. The optimum condition for the extraction of C. endivia L. is ethanol extraction at 60~100℃ associated with ultrasonification.
        14.
        2008.02 KCI 등재 서비스 종료(열람 제한)
        Immune activities of Opuntia ficus indica L. Miller were investigated through aqueous extracts associated with ultrasonification process at 60℃, and showed the highest promotion of human B and T cell growth, up to 52% and 41%, respectively, compared to the control. The secretion of TNF-α and IL-60 was also enhanced by the addition (0.5mg/ml) of the extracts, up to 48%. NK cell activation was significantly improved up to 1.3 times higher than the case of adding other extracts. It was also found that extracts from O. ficus indica could yield higher nitric oxide production from macrophage than Lipopolysaccaharides (LPS). It can be concluded that, in general, the extracts treated with ultrasonification has higher Immune acitivities than others, possibly by higher yielding immune-modulatory than conventional extraction process. The optimum condition for the extraction of O. ficus-indicais water extraction associated with ultrasonification.