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김미정,김영숙,배지혜,신영옥,장명희,황인순 효성여자대학교 가정대학 학도호국단 1984 家政大論集 Vol.3 No.-
The purpose of this study was to investigate the attitude difference toward the school uniform, it was supposed that clothing acceptance was differentiated according to subjects. The subjects were grouped by 3 types which were students, teachers(school governors) and parents groups. The results were as follows; 1. Boy students reguired the more freedom of clothing than girls. 2. Teachers and parents groups considered that clothing affected student's behavior and self-esteem. 3. The acceptance of school plain dress was affected by atomosphere of home and school. 4. According to socioeconomic levels, there were differences in clothing acceptance and fashion acceptance.
Seasonality of Coumarin Composition and Antioxidant Activities in Daphne jejudoensis
Ji-Yeong Bae 한국생약학회 2023 Natural Product Sciences Vol.29 No.3
Daphne jejudoensis, an endemic plant found in Gotjawal area in Jeju Island, was reported as a new species in 2013 due to its distinct characteristics and distribution, which differentiate it from its related species, D. kiusiana. This study focuses on the comparative phytochemical analysis and antioxidant activities of D. jejudoensis leaves based on the collection period in order to identify the optimal harvest time. Daphnin and daphnetin were identified as the major components with the highest content observed in samples collected during spring, and the highest antioxidant activities were recorded during the same time period. This study represents the first investigation into the quantitative analysis of daphnin and daphnetin in the leaves of D. jejudoensis based on the collection period.
( Ji Yeong Bae ),( Yoon Seok Lee ),( Sun Young Han ),( Eun Ju Jeong ),( Mi Kyeong Lee ),( Jae Yang Kong ),( Dong Hoon Lee ),( Kyeong Jae Cho ),( Haeng Soon Lee ),( Mi Jeong Ahn ) 한국응용약물학회 2012 Biomolecules & Therapeutics(구 응용약물학회지) Vol.20 No.4
Rumex acetosa is a perennial herb that is widely distributed across eastern Asia. Although the hot water extract of R. acetosa has been used to treat gastritis or gastric ulcers as a folk medicine, no scientifi c report exists for the use of this plant to treat gastric ulcers. Hence, the present study was undertaken to assess the anti-ulcer activity of water and 70% ethanol extracts obtained from R. acetosa, using an HCl/ethanol-induced gastric ulcer model in mice. Anti-infl ammatory and free radical-scavenging activities of these two extracts were also evaluated and compared. As a result, the administration of R. acetosa extracts signifi cantly reduced the occurrence of gastric ulcers. However, signifi cant differences in protective activity against gastric ulcers were observed between the two samples. In the case of the group pretreated with an ethanol extract dosage of 100 mg/kg, the protective effect (90.9%) was higher than that of water extract (41.2%). Under histological evaluation, pretreatment with R. acetosa extracts reversed negative effects, such as infl ammation, edema, moderate hemorrhaging and loss of epithelial cells, presented by HCl/ ethanol-treated stomachs. Meanwhile, R. acetosa extracts showed potent DPPH radical-scavenging activity and decreased NO production in a murine macrophage cell line, RAW 264.7, in a dose-dependent manner without affecting cellular viability. The greater anti-ulcer and NO production inhibitory activities exhibited by ethanol extracts compared to water extracts could be ascribed to the higher emodin levels, a major anthraquinone component of this plant.