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
Marine endophytic fungi Trichoderma harzianum KTR3 and Aspergillus sydowii KTR50 exhibit enzymatic activity capable of hydrolyzing chitosan into chitosan oligosaccharides (COS). This hydrolysis process reduces the molecular weight of chitosan, thereby enhancing its antioxidant and antibacterial activities. The study showed that COS with lower molecular weights demonstrated higher free radical scavenging activity against DPPH and ABTS•+ compared to untreated chitosan. However, antioxidant activity tests using Ferric Reducing Antioxidant Power (FRAP) and nitric oxide radical scavenging assays revealed no significant differences between COS and untreated chitosan. Additionally, COS hydrolyzed by fungal isolates exhibited better antibacterial activity against Escherichia coli (Gram-negative bacteria) and Staphylococcus aureus (Gram-positive bacteria) compared to untreated chitosan, although the antibacterial activity of all samples remained relatively weak. The antibacterial activity exhibited by both chitosan and COS was bactericidal. These findings indicate that COS hydrolyzed by T. harzianum KTR3 and A. sydowii KTR50 can reduce molecular weight, enhance certain antioxidant activities against tested radicals, and improve antibacterial activity.
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.