Results 41 to 50 of about 3,283 (227)

Optimization of Thebaine Production using Adventitious Roots of Papaver bracteatum Lindle. by Alteration of Aeration Volume and Temperature in Bioreactor

open access: yesJournal of Medicinal Plants, 2019
Background: Nowadays, the optimization of the culture conditions in bioreactors is considered as an approach to produce secondary metabolites such as thebaine.
N Qavami   +5 more
doaj  

High variations of the thebaine concentrations in Iranian poppy (Papaver bracteatum Lindl.) from various regions in Iran

open access: yesJournal of Applied Botany and Food Quality
This paper aims to contribute reliable information to promote the pharmacological utilization of Papaver bracteatum by analyzing its wild population in Iran. For this purpose, 27 Iranian poppy specimens from 7 provinces of Iran were analyzed.
Mahdi Yahyazadeh   +14 more
doaj   +1 more source

Total biosynthesis of opiates by stepwise fermentation using engineered Escherichia coli

open access: yesNature Communications, 2016
Opiates—the gold standard for pain relief—are currently produced by extraction from opium poppies. Here the authors show that bacteria can serve as an efficient and flexible platform for the production of opiates by demonstrating the total synthesis of ...
Akira Nakagawa   +9 more
doaj   +1 more source

In Vitro Polyploidy Induction in Persian Poppy (Papaver bracteatum Lindl.)

open access: yesCaryologia, 2020
Papaver bracteatum Lindl. grows as a wild perennial medicinal plant in Northern Iran and is known mainly for its high amounts of the pharmaceutically valuable alkaloid of thebaine. In vitro production of tetraploid P.
Saeed Tarkesh Esfahani   +2 more
doaj   +1 more source

Benefits of using intrathecal buprenorphine [PDF]

open access: yes, 2014
Background: General anesthesia draws attention to the most commonly used modalities for post cesarean delivery pain relief in systemic administration of opioids, while the administration of small dose of intrathecal opioid during spinal anesthesia can be
Alijanpour, E.   +3 more
core  

The Effect of L-tyrosine on Thebaine Production in Cell Suspension Culture of Iranian Poppy (Papaver bracteatum)

open access: yesJournal of Medicinal Plants, 2016
Background: Using of elicitors and different compounds in cell suspension culture is an effective strategy for enhancement and improvement of important secondary metabolites production in in vitro conditions.
R Farjaminezhad   +3 more
doaj  

Nonconventional Techniques in Plant Alkaloid Extraction: A Decade of Progress (2014–2023)

open access: yesChemistry &Biodiversity, Volume 22, Issue 8, August 2025.
This figure seeks to represent the evolution of the different unconventional approaches that were adopted for the extraction of plant‐derived alkaloids during the decade from 2014 to 2023. ABSTRACT Plant metabolism encompasses primary and secondary pathways, with secondary metabolism yielding diverse natural products crucial for plant adaptation and ...
Victor Menezes Sipoloni   +5 more
wiley   +1 more source

Contra-thermodynamic hydrogen atom abstraction in the selective C−H functionalization of trialkylamine N‑CH3 groups [PDF]

open access: yes, 2016
We report a simple one-pot protocol that affords functionalization of N-CH3 groups in N-methyl-N,N-dialkylamines with high selectivity over N-CH2R or N-CHR2 groups.
Barham, Joshua P.   +2 more
core   +1 more source

Acetylation‐Deacetylation‐Driven Natural Product Biosynthesis

open access: yesChemistryEurope, Volume 3, Issue 4, July 14, 2025.
This review summarizes the role of acetylation‐deacetylation in natural product biosynthesis, including acetylation followed by deacetylation after several biosynthetic steps, acetylation‐mediated rearrangement, acetylation‐triggered elimination, and the acetylation cycle as a regulatory mechanism. These processes are vital for the formation of complex
Huibin Wang, Ikuro Abe
wiley   +1 more source

Improved evaluation method for reliable distinction of poppy (Papaver somniferum L.) cultivars

open access: yesInternational Journal of Horticultural Science, 1999
Investigating seven Hungarian standard cultivars (i.e. 'A1’, 'Kék Gemona', '13C-2`,'Kék Duna', `Kompolti M’, `Gödi N', 'Kozmosz) it was proved that for the reliable distinction between cultivars a complex analysis is necessitated. Because of the large
J. Bernáth, J. Bakó, F. Petheő
doaj   +1 more source

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