Results 21 to 30 of about 1,809 (150)

Extraction, radiolabeling, and biodistribution of thebaine in rats [PDF]

open access: yes, 2013
The goal of this study was to determine the radiopharmaceutical potential of radioiodinated thebaine. Thebaine was extracted from dry capsules of opium poppy (Papaver somniferum L.), purified using high-performance liquid chromatography, and ...
Muftuler, F. Zumrut Biber   +8 more
core   +1 more source

Mesostructured Silica-Coated Magnetic Nanoparticles to Extract Six Opium Alkaloids in Poppy Seeds Prior to Ultra-High-Performance Liquid Chromatography-Tandem Mass Spectrometry Analysis

open access: yesFoods, 2021
In recent years, health authorities have become increasingly concerned about preventing consumer exposure to opium alkaloids present in Papaver somniferum L. poppy seeds. In this study, a simple, rapid and efficient method has been optimised to determine
Gema Casado-Hidalgo   +3 more
doaj   +1 more source

Separation and identification of a number of alkaloids and some phenols from two species of plants of the genus Euphorbia grown in Nineveh Governorate. [PDF]

open access: yesمجلة التربية والعلم, 2023
In this research, a number of chemical compounds were estimated and identified in the crude extract of both E. helioscopia and E. peplus species, as it was noted that there were about twenty alkaloid compounds in them, and It was, also, noted that there ...
Enas Qasim, Jehan Al-Hatem, Lubna abbas
doaj   +1 more source

Behavioral effects of thebaine in the rhesus monkey [PDF]

open access: yes, 1981
Three experiments were conducted with rhesus monkeys to assess some behavioral effects of the opium alkaloid, thebaine, in relation to its dependence liability.
Hartel, Christine R.   +2 more
core   +1 more source

The synthesis of potential analgesics derived from thebaine [PDF]

open access: yes, 1979
The thesis describes the synthesis of novel bridged thebaine derivatives with heterocyclic rings attached to C-7 and a study of the associated chemistry. Use has been made of the α-hydrazide (3) formed from the α-ester (2), itself prepared by Diels-Alder
Michael Burton (4178776)
core   +7 more sources

Genetic and Phenotypic Analyses of a Papaver somniferum T-DNA Insertional Mutant with Altered Alkaloid Composition

open access: yesPharmaceuticals, 2012
The in vitro shoot culture of a T-DNA insertional mutant of Papaver somniferum L. established by the infection of Agrobacterium rhizogenes MAFF03-01724 accumulated thebaine instead of morphine as a major opium alkaloid.
Kayo Yoshimatsu   +3 more
doaj   +1 more source

Update of the Scientific Opinion on opium alkaloids in poppy seeds

open access: yesEFSA Journal, 2018
Poppy seeds are obtained from the opium poppy (Papaver somniferum L.). They are used as food and to produce edible oil. The opium poppy plant contains narcotic alkaloids such as morphine and codeine.
EFSA Panel on Contaminants in the Food Chain (CONTAM)   +32 more
doaj   +1 more source

Determination of alkaloids and oil rates of some poppy (papaver somniferum L.) varieties cultivated as winter and summer

open access: yesInternational Journal of Secondary Metabolite, 2017
The aim of this study is to determine the alkaloid and oil rates contents of some poppy (Papaver somniferum L.) varieties, such as morphine, codeine, oripavine, thebaine, noscapine and papaverine, which are planted as winter and summer. Five varieties of
Levent Yazıcı, Güngör Yılmaz
doaj   +1 more source

Direct Ambient Mass Spectrometry for Food, Beverage, and Agricultural Sample Analysis and Research

open access: yesMass Spectrometry Reviews, Volume 45, Issue 2, Page 429-452, March/April 2026.
ABSTRACT Ambient and direct mass spectrometry (MS) methods are becoming increasingly used for the rapid analysis of food, beverage and agricultural samples. Novel ionization approaches combined with targeted, or untargeted workflows provide analytical outcomes within a greatly reduced time period compared to traditional separation science coupled with ...
Leigh M. Schmidtke   +3 more
wiley   +1 more source

Electrosynthesis of Bioactive Chemicals, From Ions to Pharmaceuticals

open access: yesAdvanced Functional Materials, Volume 36, Issue 16, 23 February 2026.
This review discusses recent advances in electrosynthesis for biomedical and pharmaceutical applications. It covers key electrochemical materials enabling precise delivery of ions and small molecules for cellular modulation and disease treatment, alongside catalytic systems for pharmaceutical synthesis.
Gwangbin Lee   +4 more
wiley   +1 more source

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