인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
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
Abstract Lignin, a major component of lignocellulosic cell walls, is an aromatic polymer known to exhibit a high molar absorption coefficient and fluorescence properties in various solvents and polymeric environments. Understanding these fluorescence characteristics is crucial not only for developing lignin-derived optical materials but also for gaining insight into its native structure within the cell wall. The luminescence properties of lignin vary across taxonomic species and extraction methods. Moreover, because lignin exhibits a broad molar mass distribution, its chromophores are likewise expected to span a wide molar mass range. In this study, milled wood lignins were isolated from four lignocellulosic sources representing different taxonomic groups: Japanese cedar (gymnosperm, softwood), Japanese beech (angiosperm, dicotyledonous hardwood), palm frond (angiosperm, monocotyledonous Arecaceae ), and corn cob (angiosperm, monocotyledonous Poaceae ). Next, the molar mass distributions of chromophores in these samples were analyzed using size-exclusion chromatography across various excitation and emission wavelengths to examine their fluorescence behavior in solution. The results revealed that, across all samples, the fluorescence-based molar mass distribution varied slightly with emission wavelength (e.g., 350 nm and 400 nm), even when the excitation wavelength was fixed at 320 nm. Furthermore, differences in distribution were observed at different excitation wavelengths (320, 350, and 400 nm), suggesting that lignin comprises a variety of chromophores, each associated with a distinct molar mass distribution.
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.
최근 본 자료 전체보기
