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oripavine/papaver somniferum
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14 resultados
Biosynthesis of opium alkaloids. Substrate specificity and aberrant biosynthesis: attempted detection of oripavine in Papaver somniferum.
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Microbe associated molecular patterns from rhizosphere bacteria trigger germination and Papaver somniferum metabolism under greenhouse conditions.
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Ten PGPR from different backgrounds were assayed on Papaver somniferum var. Madrigal to evaluate their potential as biotic elicitors to increase alkaloid content under the rationale that some microbe associated molecular patterns (MAMPs) are able to trigger plant metabolism. First, the 10 strains
Rapid determination of Papaver somniferum alkaloids in process streams using monolithic column high-performance liquid chromatography with chemiluminescence detection.
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We have combined high-performance liquid chromatography (HPLC) separations using a monolithic column with acidic potassium permanganate and tris(2,2'-bipyridyl)ruthenium(II) chemiluminescence detection in a rapid and highly sensitive method to monitor the process of extracting opiate alkaloids from
Development and validation of a reversed-phase HPLC method for determination of alkaloids from Papaver somniferum L. (Papaveraceae).
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An HPLC method for the separation of six target alkaloids from Papaver somniferum L. (morphine, codeine, oripavine, thebaine, papaverine, and noscapine) was developed, optimized, and validated. The chromatographic behavior of these alkaloids was investigated using a reversed-phase chromatography at
Oripavine - a new opium alkaloid.
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Oripavine was isolated from the dried capsules of a variety of PAPAVER SOMNIFERUM cultivated on Tasmania.
Transformation of thebaine to oripavine, codeine, and morphine by rat liver, kidney, and brain microsomes.
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Thebaine, an intermediate of morphine biosynthesis in the poppy plant, Papaver somniferum, was transformed to oripavine, codeine, and morphine by rat liver, kidney, and brain microsomes in the presence of an NADPH-generating system. The formation of morphine, codeine, and oripavine was identified by
High pressure liquid chromatographic determination of the five major alkaloids in Papaver somniferum L. and thebaine in Papaver bracteatum Lindl. capsular tissue.
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A high pressure liquid chromatographic isocratic procedure is described for determining and quantitating the 5 major alkaloids narcotine, papaverine, thebaine, codeine, and morphine in Papaver somniferum L. and thebaine in Papaver bracteatum Lindl. Other papaveraceous alkaloids, including
Isolation and identification of unique marker compounds from the Tasmanian poppy Papaver somniferum N. Implications for the identification of illicit heroin of Tasmanian origin.
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Tasmanian opium accounts for 25% of the world's legal supply of opium straw, and in 1998-99 sufficient numbers of flower pods (66,013) to manufacture ca 500 kg of heroin were stolen. Whilst the heroin signature program has been developed to determine the origin of heroin from other key producers, no
Biosynthesis of unnatural papaverine derivatives in Papaver somniferum.
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The unnatural thebaine analog, oripavine 3-ethyl ether, was efficiently metabolized to morphine 3-ethyl ether and morphine in the opium poppy. An attempt to detect oripavine hy an isotope dilution experiment based on its presumed biosynthesis from reticuline was unsuccessful.
Crystal structure of thebaine 6-O-demethylase from the morphine biosynthesis pathway.
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Thebaine 6-O-demethylase (T6ODM) from Papaver somniferum (opium poppy), which belongs to the non-heme 2-oxoglutarate/Fe(II)-dependent dioxygenases (ODD) family, is a key enzyme in the morphine biosynthesis pathway. Initially, T6ODM was characterized as an enzyme catalyzing O-demethylation of
[Quality and quantity of morphinan alkaloids detectable in interspecific hybrids of the genus papaver*].
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Viable hybrids were artificially produced between PAPAVER BRACTEATUM rich in thebaine on the one side and PAPAVER SOMNIFERUM, PAPAVER ORIENTALE and PAPAVER PSEUDO-ORIENTALE on the other side. Each of them is characterized by morphological and some physiological features as well as by its chromosome
Update of the Scientific Opinion on opium alkaloids in poppy seeds
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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. Poppy seeds do not contain the opium alkaloids, but can become contaminated with alkaloids as
RNAi-mediated replacement of morphine with the nonnarcotic alkaloid reticuline in opium poppy.
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We report on the silencing of codeinone reductase (COR) in the opium poppy, Papaver somniferum, using a chimeric hairpin RNA construct designed to silence all members of the multigene COR family through RNA interference (RNAi). After gene silencing, the precursor alkaloid (S)-reticuline-seven
Cytochrome P450 3A Enzymes Catalyze the O6-Demethylation of Thebaine, a Key Step in Endogenous Mammalian Morphine Biosynthesis.
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Morphine, first characterized in opium from the poppy Papaver somniferum, is one of the strongest known analgesics. Endogenous morphine has been identified in several mammalian cells and tissues. The synthetic pathway of morphine in the opium poppy has been elucidated. The presence of common
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