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        검색결과 6

        1.
        2016.08 KCI 등재 서비스 종료(열람 제한)
        Background: This study represents the first report that the anti-obesity activity of ethanol extracts of Aronia melanocarpa can be enhanced through ultrasonification at a frequency of 120 ㎑ at 60℃ (UE). Methods and Results: The amounts of cyanidin-3-O-galactose (cya-gal), a major anthocyanin in A. melanocarpa were higher by up to 402.4 ㎎/100 g, as compared with 221.4 ㎎/100 g and 322.1 ㎎/100 g, for hot water at 100℃ and 70% ethanol at 80℃ respectively. This result should cause the higher antioxidant activities of the UE than extract of hot water and ethanol in DPPH free radical scavenging. It was confirmed that the high antioxidant activity of UE could play an important role in inhibiting the production of proteins related to adipocyte differentiation, such as peroxisome proliferator activated receptor-γ (PPAR-γ) and sterol regulatory element binding protein 1 (SREBP1). Conclusions: Ultrasonification at a frequency of 120 ㎑ at 60℃ should result in better anti-obesity activity than that observed using other processes. It was also observed for the first time that the anti-obesity activity of A. melanocarpa was associated with its antioxidant activity, possibly due to the higher elution of intact cya-gal, owing to efficient low temperature ultrasonification extraction. These results could also be applied to improve other biological activities of medicinal herbs that contain many types of heat-labile bioactive substances.
        3.
        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.
        4.
        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.
        5.
        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.
        6.
        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.