청나래고사리와 고비 지상부의 효율적인 phytoecdysteroids 추출조건 = Effective Extraction of Phytoecdysteroids from Fronds of Matteuccia struthiopteris and Osmunda japonica

국문 초록 (Abstract)

본 연구는 양치식물로부터 phytoecdysteroids의 추출효율을 향상시키기 위하여 시행하였다. 청나래고사리와 고비의 잎(엽상체)을 동결건조 한 후 곱게 분쇄하여 MeOH, 80% EtOH, H2O(nano pure grade)를 용매로 하여 50배 추출하였으며, 각 용매별로 6시간 동안 침지, 교반(200 RPM), 60℃ 환류냉각추출하거나 42 kHz의 초음파수조에서 15, 30, 45분 동안 추출하였다. 추출물은 C18 cartridge로 정제하여 분석하였으며, HPLC를 이용하여 각 추출물의 20- hydroxyecdysone(20E)과 ponasterone A(PonA)의 함량을 조사하였다. 3종류의 용매를 6가지 방법으로 추출한 결과, 청나래고사리와 고비의 추출물 모두 MeOH를 용매로 30분 동안 초음파 추출했을 때 20E와 PonA의 용출량이 증가하였으며, 엽상체 건물중 1 g당 청나래고사리와 고비의 20E 함량은 66.76과 104.48 μg, PonA의 함량은 53.43와 43.82 μg이었다.

다국어 초록 (Multilingual Abstract)

This study was carried out to investigate the effective extraction condition for increase of phytoecdysteroids from fronds of Matteuccia struthiopteris (FMS) and Osmunda japonica (FOJ). Lyophilizated fronds were mixed with three different solvents (MeOH, 80% EtOH or water) and then extraction was carried out by using six different methods, such as, immersion (room temp.), heating (60℃), stirring (200 rpm) for 6 h, or sonication in 42 kHz ultrasonic bath for 15, 30 and 45 minutes. Contents of 20-hydroxyecdysone (20E) and ponasterone A (PonA) were measured by using HPLC after purification of the extracts by C18 cartridge. Altogether, our results indicate that the extraction using sonication with MeOH as a solvent (for 30 minutes) was the most effective condition for 20E and PonA from both MFS and FOJ. Resulting contents of 20E from FMS and FOJ were 66.76 and 104.48 μg·g^(-1) and PonA were 53.43 and 43.82 μg·g^(-1), respectively.

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