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Çѱ¹ÀÚ¿ø½Ä¹°ÇÐȸ / v.24, no.2, 2011³â, pp.236-242
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Á¦ÁÖ»ê Â÷ÀÇ ¹ßÈ¿ Á¤µµ¿¡ µû¸¥ »ý¸®È°¼º ±â´É¿¡ °üÇÑ ¿¬±¸
( The Analysis of the Physiologic Activities of the Jeju Teas according to the Fermentational Degree ) |
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| In this present study, we investigated the anti-oxidant activity, the inhibition ability of lipid peroxidation, and the protective effect of cow pulmonary epithelium (CPAE) cells under oxidative stress using green tea and 3 types of fermented teas of Jeju Island. To compare the physiological activity of non-fermented and 3 types of fermented teas, the fermented time was controlled with 0 hr. (non fermented tea, G), 12 hrs. (20% fermented tea, F20), 17 hrs. (50% fermented tea, F50) and 24 hrs. (80% fermented tea, F80), respectively. Scavenging ability on DPPH radicals of 80 ${mu}g/mL$ concentration of F20 was similar to that of 50 ${mu}M$ epigallocatechin gallate (EGCG) but it was stronger than those of G, F50 and F80. All extracts tested inhibited LDL oxidation but G and F20 inhibited LDL oxidation 25~30% more than F50 and F80 at 40 ${mu}g/mL$ concentration which was similar to that of 50 ${mu}M$ EGCG. We observed that the CPAE cells treated with the tea extracts had a significant increase in cell viability, especially the cells under oxidative stress with 1 mM $H_2O_2$ as compared with the control group (no treatment with tea extracts). These findings suggested that all tea extracts containing fermented tea had a protective effect on oxidative stressed CPAE cells through their free radical scavenging activity. It can be concluded that F20 extracted from 20% fermented tea has the most significant antioxidative effects that inhibit lipid peroxidation and protect the CPAE cells under oxidative stress. |
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| Ű¿öµå |
| Green tea;Fermented tea;Antioxidant activity;LDL oxidation;Cell viability; |
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Çѱ¹ÀÚ¿ø½Ä¹°ÇÐȸÁö / v.24, no.2, 2011³â, pp.236-242
Çѱ¹ÀÚ¿ø½Ä¹°ÇÐȸ
ISSN : 1226-3591
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201118860407179)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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