H
Hans Becker
Researcher at Saarland University
Publications - 77
Citations - 1441
Hans Becker is an academic researcher from Saarland University. The author has contributed to research in topics: Valeriana wallichii & Essential oil. The author has an hindex of 21, co-authored 77 publications receiving 1374 citations. Previous affiliations of Hans Becker include University of Missouri–St. Louis & Karlsruhe Institute of Technology.
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Caffeoyl conjugates from Echinacea species: Structures and biological activity
TL;DR: In this article, twelve caffeoyl conjugates were isolated from Echinacea pallida and their structures elucidated by NMR and mass spectrometry, which are either caffeic glycosides or caffeic esters of quinic or tartaric acid.
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Xanthohumol metabolites in faeces of rats.
Aslieh Nookandeh,Norbert Frank,Frank Steiner,Renate Ellinger,Bernd Schneider,Clarissa Gerhäuser,Hans Becker +6 more
TL;DR: Xanthohumol (1), isolated from hop, was fed to rats in a dose of 1000 mg kg(-1) body weight and analysed for metabolites, which consisted of unchanged 1.5% flavonoid-compounds and 20 metabolites had a modified chalcone structure and two metabolites were flavanone derivatives.
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Bioactivity guided isolation of antifungal compounds from the liverwort Bazzania trilobata (L.) S.F. Gray
TL;DR: A dichloromethane and a methanol extract of the liverwort Bazzania trilobata showed antifungal activity against the phytopathogenic fungi Botrytis cinerea, Cladosporium cucumerinum, Phythophthora infestans, Pyricularia oryzae and Septoria tritici.
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Callus– und suspensionskulturen von silybum marianum
Hans Becker,R. Schrall +1 more
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Valepotriate Production of Normal and Colchicine-Treated Cell Suspension Cultures of Valeriana wallichii
Hans Becker,Supa Chavadej +1 more
TL;DR: Colchicine-treated suspension cultures of Valeriana wallichii produce higher amounts of valepotriates than did the respective untreated cultures, and a series of fourteen new compounds were isolated from the cell suspension culture.