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Çѱ¹ÀÚ¿ø½Ä¹°ÇÐȸ / v.24, no.2, 2011³â, pp.174-180
°íºñÀÇ Ç×»êȭȰ¼º Áõ°¡¸¦ À§ÇÑ È¿À²ÀûÀÎ ÃßÃâÁ¶°Ç Ž»ö
( Screening of Effective Extraction Conditions for Increasing Antioxidant Activities from Fronds of Osmunda japonica )
½Å¼Ò¸²;ÀÌöÈñ; ÃæºÏ´ëÇб³ ÀÀ¿ë»ý¸íȯ°æÇкΠ¿ø¿¹°úÇаú;ÃæºÏ´ëÇб³ ÀÀ¿ë»ý¸íȯ°æÇкΠ¿ø¿¹°úÇаú;
 
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º» ¿¬±¸´Â °íºñÀÇ ¼º¿±À¸·ÎºÎÅÍ Ç×»êÈ­ ¹°Áú ÃßÃâ°ú Ç×»êÈ­ Ȱ¼ºÀ» Áõ°¡½Ã۱â À§ÇÑ ÀûÁ¤ ÃßÃâ Á¶°ÇÀ» ±¸¸íÇϱâ À§ÇÏ¿© ½ÃÇàÇÏ¿´´Ù. µ¿°á°ÇÁ¶ ÇÑ ´ÙÀ½ ºÐ¼âÇÑ °íºñ ¼º¿± 1 gÀ» ¸Þź¿Ã, 80% ¿¡Åº¿Ã, ¹° µî 3Á¾·ùÀÇ ¿ë¸Å¿Í È¥ÇÕÇÑ ´ÙÀ½ »ó¿Â¿¡¼­ ħÁö, $60^{circ}C$ÀÇ Ç׿ ¼öÁ¶¿¡¼­ °¡¿­, 200 rpm¿¡¼­ ±³¹ÝÇÏ¿© 6½Ã°£µ¿¾È ÃßÃâÇϰųª 42 kHzÀÇ ÃÊÀ½ÆÄ ¼öÁ¶¿¡¼­ 15, 30, 45ºÐ µ¿¾È ÃßÃâÇÏ¿´´Ù. ÃßÃâ¹°Àº ¿©°úÇÑ ´ÙÀ½ ÃÖÁ¾ º¼·ýÀ» 50 mL·Î Á¤·®ÇÏ¿© °¡¿ë¼º°íÇüºÐ, ÃÑ Æú¸®Æä³î ¹× ÃÑ Çö󺸳ëÀÇ ÇÔ·®À» ±¸ÇÏ¿´À¸¸ç, Ç×»êȭȰ¼ºÀº 0.15 mMÀÇ DPPH¿Í 7.4 mMÀÇ ABTS radical ¼Ò°Å´ÉÀ¸·Î ÃøÁ¤ÇÏ¿´´Ù. °íºñ ¼º¿± ÃßÃâ¹°ÀÇ Ç×»êÈ­ È¿°ú¸¦ Áõ°¡½Ã۱â À§Çؼ­´Â ¸Þź¿Ã°ú 80% ¿¡Åº¿ÃÀ» ¿ë¸Å·Î »ç¿ëÇÏ´Â °ÍÀÌ È¿°úÀûÀÎ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¸Þź¿ÃÀ» ¿ë¸Å·Î ÃÊÀ½ÆÄ ¼öÁ¶¿¡¼­ 15ºÐ µ¿¾È ÃßÃâÇßÀ» ¶§ ÃÑ Æú¸®Æä³îÀÇ ÇÔ·®(45.15 $mg{cdot}g^{-1}$ db)°ú DPPH radical ¼Ò°ÅȰ¼º($RC_{50}$=0.35 $mg{cdot}mL^{-1}$)ÀÌ °¡Àå ¿ì¼öÇÏ¿´À¸¸ç, ÃÑ Çö󺸳ëÀ̵åÀÇ ÇÔ·®Àº ¸Þź¿ÃÀ» ¿ë¸Å·Î »ó¿ÂħÁö ¶Ç´Â °¡¿­ÃßÃâÇÏ¿´À» ¶§ (38.10~38.10 $mg{cdot}g^{-1}$ db), ABTS radical ¼Ò°ÅȰ¼ºÀº 80% ¿¡Åº¿ÃÀ» ¿ë¸Å·Î »ó¿ÂħÁö ¶Ç´Â °¡¿­ÃßÃâÇÏ¿´À» ¶§ °¡Àå ¿ì¼öÇÏ¿´´Ù($RC_{50}$=0.21~0.22 $mg{cdot}mL^{-1}$). ¿¬±¸ÀÇ °á°ú, ÃÊÀ½ÆÄ ¼öÁ¶¸¦ ÀÌ¿ëÇÑ ÃßÃâÀº ³ë·Â°ú ½Ã°£À» Àý°¨ÇÒ ¼ö ÀÖ´Â È¿À²ÀûÀÎ ÃßÃâ¹æ¹ýÀ¸·Î »ý°¢µÇ¾úÀ¸¸ç, °íºñÀÇ ¼º¿±Àº ¸Þź¿ÃÀ» ¿ë¸Å·Î 15~30ºÐ µ¿¾È ÃÊÀ½ÆÄ ¼öÁ¶¿¡¼­ ÃßÃâÇÏ´Â °ÍÀÌ ÃßÃâ¹°ÀÇ ´Ù¾çÇÑ Ç×»êȭȰ¼ºÀ» Áõ°¡½Ã۴µ¥ °¡Àå ÀûÇÕÇÑ °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
This study was conducted to investigate the optimum condition of extraction from fronds of Osmunda japonica to increase antioxidant compounds and antioxidant activity. Powder (1 g) of lyophilized fronds were mixed with three different solvents (MeOH, 80% EtOH and water). Extraction was carried out using not only by immersion (room temp.), heating ($60^{circ}C$) and stirring (200 rpm) for 6 h, but also by sonication in 42 kHz ultrasonic bath for 15, 30 and 45 min. Extracts were filtered, and adjusted up to 50 mL to determine contents of soluble solids, total polyphenols and total flavonoids. Antioxidant capacity was measured by radical scavenging activity of 0.15 mM DPPH (2,2-diphenyl-1-picrylhydrazyl) and 7.4 mM ABTS [2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)] radical. Among the solvents, MeOH and 80% EtOH appeared to be effective for extraction. Extract obtained from sonication in MeOH for 15 min resulted high polyphenol contents (45.15 $mg{cdot}g^{-1}$ db) and DPPH radical scavenging activity ($RC_{50}$= 0.35 $mg{cdot}mL^{-1}$). The highest flavonoid contents was obtained from immersion or heating extraction with MeOH (38.10~38.10 $mg{cdot}g^{-1}$ db). ABTS radical scavenging was high in same extraction with 80% EtOH ($RC_{50}$= 0.21~0.22 $mg{cdot}mL^{-1}$). Altogether, our results indicate that the extraction using ultrasonic bath with MeOH as a solvent (for 15~30 minutes) was the most effective way not only for increasing various antioxidant activities but also for saving labor and time in case of fronds of Osmunda japonica.
 
Ű¿öµå
ABTS radical;DPPH radical;Flavonoid;Ultrasonic;Polyphenol;
 
Çѱ¹ÀÚ¿ø½Ä¹°ÇÐȸÁö / v.24, no.2, 2011³â, pp.174-180
Çѱ¹ÀÚ¿ø½Ä¹°ÇÐȸ
ISSN : 1226-3591
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201118860407167)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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