Results 41 to 50 of about 84,269 (200)

Soil-borne microorganisms and soil-type affect pyrrolizidine alkaloids in Jacobaea vulgaris [PDF]

, 2009
Secondary metabolites like pyrrolizidine alkaloids (PAs) play a crucial part in plant defense. We studied the effects of soil-borne microorganisms and soil-type on pyrrolizidine alkaloids in roots and shoots of Jacobaea vulgaris.
Veen, J.A., van, Klinkhamer, P.G.L., Joosten, L., Mulder, P.P.J.   +3 more
core   +1 more source

Chemometric approach for development, optimization and validation of HILIC methods used for the determination of alkaloids from poppy straw

Macedonian Journal of Chemistry and Chemical Engineering, 2014
Two hydrophilic interaction liquid chromatography (HILIC) methods for simultaneous determination of the major alkaloids (morphine, codeine, thebaine, oripavine, papaverine and noscapine) in opium poppy straw (Papaver somniferum L., Papaveraceae) were ...
Jelena Acevska, Gjoshe Stefkov, Natalija Nakov, Rumenka Petkovska, Liljana Ugrinova, Svetlana Kulevanova, Aneta Dimitrovska   +6 more
doaj   +1 more source

Radical Approaches to Alangium and Mitragyna Alkaloids [PDF]

, 2010
The work presented in this thesis has focused on the development of novel and concise syntheses of Alangium and Mitragyna alkaloids, and especial approaches towards (±)-protoemetinol (a), which is a key precursor of a range of Alangium alkaloids such as ...
Palframan, M J
core   +6 more sources

Evaluation the Variation of Morphine Percentage in Different Turkish Opium Poppy (Papaver somniferum L.) Lines in Three Years [PDF]

Journal of Medicinal Plants and By-products, 2015
Opium poppy (Papaver somniferum L.) has two major products: alkaloids in the capsules and the seeds. It is known that opium poppy today contains alkaloid in great quantities.
Amir Rahimi, Neşet Arslan, Negar Valizadeh   +2 more
doaj  

Investigation of Alkaloids in Opium Poppy (Papaver somniferum L.) Varieties and Hybrids

Journal of Agricultural Sciences, 2021
This study aimed to investigate the proportions of morphine, thebaine, noscapine, codeine, oripavine and papaverine alkaloids in poppy varieties and hybrids. Nine parents and 36 hybrid lines were used in the trial.
Levent Yazici, Güngör Yılmaz
doaj   +1 more source

Isolation and X-ray crystal structure of tetrahydroisoquinoline alkaloids from Calycotome villosa Subsp. intermedias [PDF]

, 2004
Two tetrahydroisoquinoline alkaloids were extracted from the alkaloid fraction of a methanol extract of the seeds of Calycotome Villosa Subsp. intermedia.
Bolte, Michael, El Alami, Rachid, El Bali, Brahim, Messouri, Ibtissam, Bouktaib, Mohamed, Rachid El Alami, Brahim El Bali, Michael Bolte, El Antri, Ali, Mohamed Bouktaib, Ibtissam Messouri, Lachkar, Mohammed, Mohammed Lachkar, Ali El Antri   +13 more
core   +1 more source

Determination of relative response factors of the opium alkaloids with HPLC-DAD [PDF]

Makedonsko Farmacevtski Bilten, 2012
In this work, a convenient method for determination of relative UV response factors (RRFs) of morphine, codeine, thebaine, oripavine, noscapine and papaverine by high performance liquid chromatography (HPLC) equipped with a diode array detector (DAD) was
Jelena Acevska, Gjoshe Stefkov, Natalija Nakov, Marija Karapandzova, Svetlana Kulevanova, Aneta Dimitrovska   +5 more
doaj  

A Catalogue of Dispensation Lengths for Building Treatment Episodes—Application of the Waiting Time Distribution to All Commonly Prescribed Drugs in Denmark

Pharmacoepidemiology and Drug Safety, Volume 35, Issue 9, September 2026.
ABSTRACT Background In pharmacoepidemiologic research, correct assignment of the length of single dispensation is critical to build treatment episodes. The parametric reverse waiting time distribution (rWTD) is a particularly attractive data‐driven method to estimate dispensation lengths.
Mette Reilev, Lotte Rasmussen, Jonas Kanstrup Olsen, Martin Thomsen Ernst, Saad Hanif Abbasi, Rikke Wesselhoeft, Mette Bliddal, Jesper Hallas, Henrik Støvring   +8 more
wiley   +1 more source

Intraspecific taxonomy of plant genetic resources – Important for differentiation of medicinal and aromatic plants?

Julius-Kühn-Archiv, 2016
Taxonomy of plant genetic resources is an important input in characterising and evaluating cultivated plants and essential for identification and documentation of the diversity of genebank collections.
Lohwasser, Ulrike, Börner, Andreas, Marthe, Frank   +2 more
doaj   +1 more source

Systematic prioritization of candidate genes in camptothecin biosynthesis using multi‐omics and deep learning

The Plant Genome, Volume 19, Issue 3, September 2026.
Abstract Camptothecin (CPT), a plant‐derived monoterpene indole alkaloid first identified in Camptotheca acuminata, is a drug precursor widely used for cancer chemotherapeutics. However, the full set of genes responsible for CPT biosynthesis remains unclear, hindering efforts to elucidate the complete pathway or establish biosynthetic production of CPT
Shenqi Wang, Xing Wu, Maria Moreno, Joonseok Oh, Stephen L. Dellaporta, Jason M. Crawford, Farren J. Isaacs   +6 more
wiley   +1 more source