Results 131 to 140 of about 415 (164)
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Microscopy Research and Technique, 2020
AbstractThe genus Youngia Cass. is taxonomically complex and widely distributed in East Asia. Despite the high diversity of species, only two species, Youngia japonica (L.) DC. and Youngia longiflora (Babc. & Stebbins) C.Shih, are currently found in Korea. Among them, Y. longiflora was once recognized as a subspecies of Y. japonica.
Bokyung Choi +2 more
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AbstractThe genus Youngia Cass. is taxonomically complex and widely distributed in East Asia. Despite the high diversity of species, only two species, Youngia japonica (L.) DC. and Youngia longiflora (Babc. & Stebbins) C.Shih, are currently found in Korea. Among them, Y. longiflora was once recognized as a subspecies of Y. japonica.
Bokyung Choi +2 more
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Two Novel Guaiane Sesquiterpenes from the Whole Plant of Youngia japonica [PDF]
Planta Medica Letters, 2015 Two new guaiane-type sesquiterpenes ( 1 and 2 ) together with eight related sesquiterpenoidal constituents ( 3 – 10 ) were isolated from the whole extract of Youngia japonica . The chemical structures of 1 – 10 were established by spectroscopic analyses as 4- epi -isolipidiol ( 1 ), 4′- p -hydroxyphenylacetyl crepiside E ( 2 ), isolipidiol ( 3 ...
Shi Yong Ryu, Sang-Un Choi
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Phytoremediation potential of Youngia japonica (L.) DC: a newly discovered cadmium hyperaccumulator
Environmental Science and Pollution Research, 2020Cadmium (Cd) is one of the most toxic contaminants, causing a lot of harm to environment and the human health. An outdoor pot experiment for 60 days was conducted to study the Cd(II) effects on growth, biomass, physiological properties, Cd uptake, and accumulation in Youngia japonica plants but also to evaluate the effect of Y.
Jinyan Dong, Jieru Xu
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Rediscovery of Youngia longipes reveals a new species of Youngia (Asteraceae) in China
PhytotaxaYoungia wulingensis, a new species of Asteraceae from Wuling Mountain, central China, is described and illustrated. This new species had been identified as Y. longipes for a long period of time. However, we rediscovered Y. longipes in its type locality, re-examined the type specimen of Y. longipes, and found out many differences between Y. longipes and
QUN LIU +8 more
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Anticancer and antiviral activities of Youngia japonica (L.) DC (Asteraceae, Compositae)
Journal of Ethnopharmacology, 2004Aqueous and ethanol extracts of Youngia japonica (also known as Oriental hawksbeard) were tested in vitro for anti-tumor activity against three cell lines, human promyelocytic leukaemia (HL-60), human myelogenous leukaemia (chronic K-562) and mouse Sarcoma 180 (S-180), and for antiviral activity against respiratory syncytial virus (RSV), influenza A ...
Linda S M, Ooi +3 more
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Discovery of sesquiterpene from Youngia japonica with antitumor effect
FitoterapiaFourteen sesquiterpenes, including one undescribed sesquiterpene lactone, were isolated from Youngia japonica, and their structures were identified by NMR, HRESIMS, ECD and calculated ECD. Cytotoxic activities of all isolates against A549, HeLa, and 4 T1 cell lines were detected by CCK8 assay.
Xian-Sheng, Ye +10 more
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ChemInform Abstract: Studies on the Constituents of Whole Plants of Youngia japonica.
ChemInform, 2009AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Emiko Yae +9 more
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Discovery of Sesquiterpene Lactones with Cytotoxicity from the Herb of Youngia japonica
Chemistry & BiodiversityAbstractIn the process of searching for anti‐breast cancer agents, five sesquiterpene lactones (1‐5), including two previously undescribed ones, yjaponica B‐C (1‐2), were isolated from the herb of Youngia japonica. Their structures were elucidated by spectroscopic data analyses and Marfey's method.
Xian-Sheng, Ye +11 more
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Antiviral activities of purified compounds from Youngia japonica (L.) DC (Asteraceae, Compositae)
Journal of Ethnopharmacology, 2006The ethanol extract of a biannual medicinal herb, Youngia japonica (commonly known as Oriental hawk's beard) was reported previously to have potent antiviral activity against respiratory syncytial virus (RSV) cultured in HEp-2 cells. Three anti-microbial agents, namely 3,4-dicaffeoylquinic acid, 3,5-dicaffeoylquinic acid, and luteolin-7-O-glucoside ...
Linda S M, Ooi +3 more
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