• Journal of Applied Biological Chemistry
• /
• v.63 no.3
• /
• pp.249-257
• /
• 2020

This study investigated whether the extracts from cosmos flowers exhibit antibacterial activities and identified which components were ascribed to the antibacterial effects. The antibacterial effects of extracts from white, pink, and violet cosmos flowers were observed for 24 h after inoculation with four kinds of bacteria, including Staphylococcus aureus, Staphylococcus epidermidis, Pseudomonas aeruginosa, and Escherichia coli. Among the three fractions of cosmos flower extracts, the best antibacterial activity against the four bacteria was observed in the extracts isolated from the EtOAc layer. However, the extracts from the CHCl₃ layer were also effective against S. aureus. Moreover, the first of white, second of pink, and first of violet silica gel fractions (Fr.) isolated from the EtOAc layer exhibited minimal inhibition at a concentration of 0.1 mg/mL. Comparison of NMR and High-Pressure Liquid Chromatography results between silica gel Fr. and apigenin suggested that the effective fractions can contain a component including apigenin moiety.

• 프린팅코리아
• /
• v.11 no.8
• /
• pp.104-107
• /
• 2012

(주)트랜스코스모스코리아(CEO 하헌식, COO 스베타카시)는 종업원 5800명, 2011년 매출액 1552억 원에 이르는 DM 전문 회사다. 성남시 중원구 상대원동에 위치한 DM사업본부를 찾았다.

• Journal of Applied Biological Chemistry
• /
• v.60 no.1
• /
• pp.5-11
• /
• 2017

18 flowers of Compositae family were collected and extracted in aqueous methanol (MeOH). The concentrated extract was partitioned into n-hexane, ethyl acetate (EtOAc), n-BuOH, and water fractions. The extract and fractions were evaluated for total phenolics, total flavonoids, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, and tyrosinase inhibition activity. n-Hexane and EtOAc fractions of Aster yomena, n-hexane fraction of Cosmos bipinnatus White, n-hexane and EtOAc fractions of C. bipinnatus Pink showed high total phenolics. And EtOAc fractions of A. yomena, C. bipinnatus White, C. bipinnatus Red, C. morifolium Froggy, and C. morifolium Himaya exhibited high total flavonoids. EtOAc fractions of A. yomena, C. bipinnatus White, C. bipinnatus Pink, C. morifolium Yellowmable, and MeOH extract of C. morifolium Rosa significantly scavenged DPPH radical. EtOAc fractions of C. chinensis, C. bipinnatus White, C. bipinnatus Red, C. morifolium Himaya, and C. morifolium Hongsim highly inhibited the tyrosinase activity. A. yomena, C. bipinnatus White, C. bipinnatus Pink, C. bipinnatus Red and C. morifolium Himaya are evaluated as good source for whitening cosmetics materials.

• Nuclear industry
• /
• v.24 no.5 s.255
• /
• pp.70-71
• /
• 2004

• The Korean Publising Journal, Monthly
• /
• s.207
• /
• pp.14-15
• /
• 1997

• Hospice
• /
• s.37
• /
• pp.23-24
• /
• 2006

• The Korean Publising Journal, Monthly
• /
• s.304
• /
• pp.39-39
• /
• 2001

• Korea Petroleum Association Journal
• /
• no.2 s.192
• /
• pp.7-9
• /
• 1997

• Research in Plant Disease
• /
• v.18 no.3
• /
• pp.250-254
• /
• 2012

In July 2011, hundreds of garden cosmos (Cosmos bipinnatus) were found to be infected with a white smut in Namyangju. Further surveys in central Korea showed that the disease occurred in all the nine localities visited, with disease incidence rate of >50%. Symptoms manifested as pale-green to chlorotic areas on the leaves, followed by white mildew development on lesions. The lesions usually coalesced and became necrotic, considerably reducing the aesthetic value. Caespituli were initially hypophyllous but later epiphyllous as well. Conidiophores were 10-40 in moderately dense fascicles, hyaline throughout, mostly guttulate, $20-45{\times}2-4{\mu}m$, obtuse at the apex, and had inconspicuous conidial scars. Conidia were solitary, botuliform, hyaline, aseptate, mostly guttulate, apex rounded, base rounded to truncate, $17-24{\times}3.5-5{\mu}m$, hilum inconspicuous, unthickened, and not darkened. Sori were rounded to elongated, resulting in first white and later brown leaf spots. Teliospores embedded in the leaf tissue were subglobose to ellipsoidal, subhyaline to pale yellowish-brown, $12.5-20{\times}10-15{\mu}m$. These morphological characteristics corresponded with those of Entyloma cosmi V$\acute{a}$nky, Horita & Jage. This is the first report of white smut disease of garden cosmos due to infection of E. cosmi in Korea.

• The Science & Technology
• /
• no.6 s.457
• /
• pp.24-27
• /
• 2007