Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Daniel Umereweneza"'
Publikováno v:
Discovery Phytomedicine - Journal of Natural Products Research and Ethnopharmacology. 9
Phytochemicals constitute reliable sources of antifungal and antioxidant compounds with low toxicity to mammals and safe to the environment which may serve as substitutes for synthetically produced chemicals. The present work aims at screening, and i
Autor:
Daniel Umereweneza, Yoseph Atilaw, Stefan Peintner, Anastasia Rudenko, Catarina Bourgard, Ruisheng Xiong, Théoneste Muhizi, Per Sunnerhagen, Adolf Gogoll, Mate Erdelyi
Three new compounds, the silphiperfolanol angelate ester umutagarananol (1), the macrocyclic pyrrolizidine alkaloids umutagarinine A and B (2–3), and five known secondary metabolites (4–8) were isolated from the CH2Cl2−MeOH (1 : 1) extract of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::139f31342443300c7e38388df65e06e7
Autor:
Thobias M. Kalenga, Jackson T. Mollel, Joanna Said, Andreas Orthaber, Jas S. Ward, Yoseph Atilaw, Daniel Umereweneza, Monica M. Ndoile, Joan J. E. Munissi, Kari Rissanen, Edward Trybala, Tomas Bergström, Stephen S. Nyandoro, Mate Erdelyi
The leaf extract of Suregada zanzibariensis gave two new modified ent-abietane diterpenoids, zanzibariolides A (1) and B (2), and two known triterpenoids, simiarenol (3) and β-amyrin (4). The structures of the isolated compounds were elucidated base
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::005abdafe4cadeb518a32d9209a5954c
http://urn.fi/URN:NBN:fi:jyu-202209144586
http://urn.fi/URN:NBN:fi:jyu-202209144586
Autor:
Daniel Umereweneza
Publikováno v:
Daniel Umereweneza
Plants have served as the principal source of medicines in different parts of the world through the ages. Herb-derived medicines have been used as decoctions, infusions, tinctures or single substance drugs. Due to their impressive possibility of dive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::a8405ac8ad1695e8cce72d99d904c9bc
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-472783
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-472783
Autor:
Yoseph Atilaw, Théoneste Muhizi, Adolf Gogoll, Tomas Bergström, Joanna Said, Máté Erdélyi, Daniel Umereweneza, Edward Trybala, Jackson T Molel
The methanol root extract of Clerodendrum myricoides (Hochst.) Vatke afforded two new (1, 2) and two known (3, 4) iridoid glycosides. The structures of the isolated compounds were established based on NMR, IR, UV and MS data analyses. The crude extra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31d9c3b6b524644615f31ce67b4d2b2d
Publikováno v:
Journal of Essential Oil Bearing Plants. 22:151-158
Essential oils were extracted from leaves of Eucalyptus melliodora and Eucalyptus anceps by steam distillation and chemically analysed using GC/MS.The main components obtained in both Eucalyptus sp ...
Publikováno v:
Food Control. 85:432-436
Occurrence and levels of mycotoxins from maize, peanuts and cassava flours consumed in Rwanda were determined. The assessed mycotoxins include aflatoxins, fumonisins, ochratoxin A, deoxynivalenol, zearalenone, T-2 toxin and patulin. Sampling of maize
Autor:
Daniel Umereweneza, Sifang Li
Publikováno v:
Separation Science and Technology. 47:104-111
The adsorption of N-vinylpyrrolidone from aqueous polyvinylpyrrolidone solution using bamboo-based activated carbon was studied. The adsorption isotherms of N-vinylpyrrolidone on the carbon were determined and modeled with the Langmuir, Freundlich, a
Publikováno v:
Advanced Materials Research. :163-166
The acid resistance of ultramarine blue was greatly enhanced by silica coatings. Sodium metasilicate nonahydrate was used as silica precursor and ammonium chloride was used to react with it. Fourier transform infrared (FT-IR) spectroscopy was used to