인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Erythrina crista-galli is among 130 species of genus Erythrina which widely distributed in Indonesia, Australia, Argentina, Uruguay, Paraguay, and Brazil. Among the botanical parts used for the exploration of alkaloids from E. crista-galli (cockspur coral, ceibo, corticeira), the twig being one that rarely explored. This study aims to explore the alkaloid content from the twig of E. crista-galli as well as to evaluate their free radical scavenging activities through in vitro and in silico studies. The metabolite profile of the ethanol extract from Erythrina crista-galli twigs was characterized using Ultra-Performance Liquid Chromatography coupled with Tandem Mass Spectrometry (UPLC-MS/MS). The structures of the isolated alkaloids were determined through Nuclear Magnetic Resonance (NMR) and Mass Spectrometry (MS). Their free radical scavenging activities were evaluated using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assay, while their electronic properties were assessed via Density Functional Theory (DFT). Twelve erythrina type alkaloids were tentatively identified from the twig of E. crista-galli. Four among these alkaloids, namely crystamidine (1), 8-oxoerythraline (2), erythrinine (3), erythraline (4) were isolated and their structures were confirmed through NMR and MS spectroscpy. Among the isolated alkaloids, erythraline (4) show highest free radical scavenging activity with IC<sub>50</sub> of 182.5 ± 5.3 µg/mL, whereas 8-oxoerythraline (1) show the lowest free radical scavenging activity with IC<sub>50</sub> of 868.2 ± 0.26 µg/mL. Structure-Activity relationship study shows that any modification in erythraline base skeleton, would decrease the antioxidant activity of erythraline, Furthermore, DFT calculation revealed that erythrinine (3), erythraline (4) tend to act as electron donors, whereas crystamidine (1), 8-oxoerythraline (2) tend to act as electron acceptors.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.