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속새(Equisetum hyemale) 추출물의 항산화 물질의 HPLC 분획과 LC-MS를이용한 지표성분 분석
송진화 ( Jin Hwa Song ),이거룡 ( Geo Lyong Lee ) 한국자연치유학회 2021 Journal of Naturopathy Vol.10 No.2
배경: 속새 줄기와 뿌리의 추출물에서 항산화 물질의 작용에 관한 결과를 이미 보고하였으나 항산화 성분은 분석되지 않았다. 목적: 속새 줄기와 뿌리 부분의 성분을 추출한 물질들이 항산화 물질의 분자 구조를 확인하는 것이었다. 방법: 성분분석은 열수와 에틸알코올로 추출하여 HPLC와 LC-MS로 분석하였다. 결과: 속새 줄기와 뿌리 추출물 의 HPLC 크로마토그램은 파장 205 nm에서 4개의 중요한 peak가 나타났다. 280 nm에 있는 peak 1번은 전형적인 단순 페놀릭형이고, 모두 280 nm와 370 nm 근처에 있는 peak 2~4는 전형적인 플라보노이드 배당체의 형태임을 알 수 있었다. HPLC 분석에 의한 추출물의 항산화도는 740 nm에서 peak의 합은 100% 에탄올 추출물이 3,669 mAU로 제일 높았고, 70% 에탄올 추출물은 3,096 mAU, 열수추출물은 2,868 mAU로 제일 낮았다. 항산화성 추출 물질을 LC-MS 분 석한 결과는 peak 3에서는 분자량이 772 da인 kaempferol-3-sophoroside-7-glucoside, peak 4에서는 분자량이 788과 772인 물질 kaempferol-3- sophoroside- 8-glucoside가 확인되었다. 결론: 속새의 항산화 추출물에 항산화 성분이 존재 하는 것이 확인되어 속새가 기능성 화장품의 원료로서 가능성이 높아 졌다고 본다. Background: Results on the action of antioxidants in extracts of Equisetum hyemale stems and roots have already been reported, but the antioxidant properties have not been analyzed. Purpose: This study was to determine the molecular structure of antioxidants in substances extracted from E. hyemale stems and roots. Methods: Component analysis was analyzed by HPLC and LC-MS after extraction with hot water and ethyl alcohol. Results: The HPLC chromatogram of stem and root extracts showed four significant peaks at a wavelength of 205 nm. Peak 1 at 280 nm is a typical simple phenolic type, and both peaks 2-4 near 280 nm and 370 nm are typical flavonoid glycosides. As for the antioxidant level of the extract by HPLC analysis, the sum of the peaks at 740 nm was the highest at 3,669 mAU in the 100% ethanol extract, 3,096 mAU in the 70% ethanol extract, and 2,868 mAU in the hot water extract. As a result of LC-MS analysis of the antioxidant extract, kaempferol-3-sophoroside-7-glucoside with a molecular weight of 772 da at peak 3, and kaempferol-3-sophoroside-8-glucoside with a molecular weight of 788 and 772 at peak 4 was identified. Conclusions: The above results show that two types of antioxidants were identified in the antioxidant extract of E. hyemale exrtracts. Therefore, the potential as a raw material for functional cosmetics has increased.
속새(Equisetum hyemale) 추출물의 항산화 및 Elastase 저해 효과
송진화 ( Jin Hwa Song ),송현숙 ( Hyun Sook Song ),이거룡 ( Geo Lyong Lee ) 한국자연치유학회 2021 Journal of Naturopathy Vol.10 No.2
배경: 약용식물 속새 풀에서 항산화물질의 존재는 확인되지 않았다. 목적: 본 연구는 속새 풀의 추출물의 항산화와 elastase inhibition 효과를 조사하는 것이었다. 방법: 속새의 줄기와 뿌리 부분을 채집하여 열수(HW) 및 에틸알코올(70EOH, 100EOH)로 추출한 물질들의 항산화 기능을 측정하였다. 결과: 줄기의 추출 수율은 HW추출에서 에틸알코올 추출보다 높았다. 폴리페놀 함유량은 줄기보다 뿌리 추출물에서는 유의하게 높았다. 70EOH 추출물의 총 플라보노이드 함량은 줄기 보다는 뿌리 추출물에서 유의하게 높았다. 뿌리 추출액의 elastase 저해 기능은 추출액 100 ppm에서는 46%의 효과가 있었고, 줄기에서는 49%의 효과가 있었다. ABTS 유리기 소거 기능 순서는 추출액 50 ppm 농도에서는 HW<70EOH<100EOH< 비타민E(99.7%)의 비율로 제거되었다. DPPH 유리기 소거능의 순서는 추출물 농도가 100 ppm일 때에 HW<100EOH<70EOH<비타민E(96.2%)로 나타났다. 양성 대조군인 비타민E의 제거율은 다른 추출물보다도 신속하고도 높게 진행되었다. 결론: 속새 풀 추출물에는 다량의 항산화물질이 존재하며 엘라스타제 저해 기능 효과도 높게 나타났다. 그런고로 속새 풀은 중요한 기능성 식물 중의 하나라고 판단한다. Background: The presence of antioxidants was not confirmed in the medicinal plant Equisetum hyamalegrass. Purposes: This study was to determine the antioxidant and elastase inhibition effects of extracts of E. hyemale. Methods: Antioxidant functions of E. hyemale stems and roots were measured and extracted with hot water (HW) and ethyl alcohol (70EOH, 100EOH). Results: The extraction yield of stems was higher in HW extraction than in ethyl alcohol extraction. The polyphenol content was significantly higher in the root extract than in the stem. Total flavonoid content of 70EOH extract was significantly higher in root extract than in stem. The elastase inhibitory function of the extract was 46% in the root and 49% in the stem at 100 ppm of the extract. The ABTS free radical scavenging function was in the order of HW<70EOH<100EOH<vitamin E (99.7%) at 50 ppm of the extract. And the order of DPPH free radical scavenging activity was HW<100EOH<70EOH<vitamin E (96.2%) when the extract concentration was 100 ppm. The removal rate of vitamin E, a positive control, was faster and higher than that of other extracts. Conclusion: E. hyemale grass extract had many antioxidants and showed an increased elastase inhibitory effect. Therefore, it is judged that the plant is one of the essential functional plants.
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To evaluate the occupant protection performance of the seat belt restraint system, six frontal barrier crash tests were conducted with identical model of passenger cars according to the test procedures of FMVSS No. 208. The test speeds were 48, 56 and 65km/h. And at each speed, two tests were conducted; one with a restrained seat belt and other with an unrestrained seat belt. Throughout the tests, head, chest and femur injury data for the driver and passenger dummies were collected. Futhermore the deformation and deceleration of the vehicle body were measured. The test data were compared and analysed with respect to seat belt usage and test speeds. The test results indicate that the protection of the restrained dummies 、 "ere better than that of unrestrained dummies at the identical speeds. It was also found that the seat belt was more effective for the chest and femur protection than for head protection. And it was confirmed that the effectiveness of the seat belt was better at low speed of 48 and 56km/h than that at 65km
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