hydroxylupanine/mlupini

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Enzymatic synthesis of quinolizidine alkaloid esters: a tigloyl-CoA: 13-hydroxylupanine O-tigloyltransferase from Lupinus albus L.

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Ingia / Ingia

A tigloyl-CoA: 13-hydroxylupanine O-tigloyl-transferase could be demonstrated in crude enzyme preparations from Lupinus albus seedlings. The enzyme activity increases concomitantly with for formation of 13-tigloyloxylupanine in developing lupin seedlings. The transferase catalyzes specifically the

Alkaloid profile of leaves and seeds of Lupinus hintonii C. P. Smith.

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Ingia / Ingia

L. hintonii C. P. Smith grows in the Central Highland forests of Mexico at altitudes between 2800 m to 3200 m above see level. Members of the genus Lupinus produce quinolizidine alkaloids as main chemical defensive compounds against herbivores. Surprisingly alkaloid profiles are rather constant

New ester alkaloids from lupins (genus lupinus).

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Ingia / Ingia

Esters of 13-hydroxylupanine and 4-hydroxylupanine with acetic, propionic, butyric, isobutyric, valeric, isovaleric, tiglic, benzoic, and TRANS-cinnamic acid have been synthesized and characterized by capillary gas-liquid chromatography and mass spectrometry (EI-MS, CI-MS). In LUPINUS POLYPHYLLUS,

Acute toxicity of the major alkaloids of cultivated Lupinus angustifolius seed to rats.

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Ingia / Ingia

The seed of modern cultivars of Lupinus angustifolius normally contain less than 0.03% alkaloids. The acute oral LD50 to rats of a pro rata mixture of the alkaloids of L. angustifolius seed was found to be 2279 mg/kg. For lupanine the LD50 by oral administration was 1464 mg/kg and by intraperitoneal

Rapid and Simultaneous Quantification of Five Quinolizidine Alkaloids in Lupinus angustifolius L. and Its Processed Foods by UPLC-MS/MS

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Ingia / Ingia

Quinolizidine alkaloids (QAs) are toxic secondary metabolites of Lupinus plants. This study reports the simultaneous quantification of five alkaloids from Lupinus angustifolius L. and its processed foods by ultraperformance liquid chromatography with electrospray ionization mass

Biochemical and partial molecular characterization of bitter and sweet forms of Lupinus angustifolius, an experimental model for study of molecular regulation of quinolizidine alkaloid biosynthesis.

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Ingia / Ingia

The bitter and sweet forms of a plant species differing with alkaloid contents may provide a model system for investigation of alkaloid biosynthesis at a molecular level. The pattern and concentration of quinolizidine alkaloids were determined by capillary GC-MS in bitter and sweet plants of Lupinus

Capillary gas chromatography of lupin alkaloids.

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Ingia / Ingia

The resolution and identification of twelve lupin alkaloids are demonstrated using capillary gas chromatography and gas chromatography-mass spectrometry. The quantitative capabilities of capillary gas chromatography are illustrated by specific reference to the four major alkaloids of lupinus

Quinolizidine alkaloids in seeds of lupin genotypes of different origins.

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Ingia / Ingia

The intake of lupin-based foods could imply the exposure of consumers to quinolizidine alkaloids. The objectives of this study were to assess the genetic variation among and within 11 geographic regions of Lupinus albus ecotypes, verify the quinolizidine alkaloids amount of alkaloid-poor L. albus

Quinolizidine alkaloids from plants and their cell suspension cultures.

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Ingia / Ingia

The alkaloid composition of cell suspension cultures and differentiated plants of Lupinus polyphyllus was evaluated using quartz capillary gas-liquid chromatography, GLC-MS and FD-MS. Lupanine (97% of total alkaloids), sparteine, 13-angeloyloxylupanine and 13-tigloyloxylupanine were detected in

Synthesis, transport and accumulation of quinolizidine alkaloids in Lupinus albus L. and L. angustifolius L.

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Ingia / Ingia

Each of the principal quinolizidine alkaloids (QA) found in both xylem and phloem exudates together with extracts from all component organs collected from bitter (cv. Lupini) and sweet (cv. Ultra) cultivars of Lupinus albus L. were quantified by gas chromatographic analyses throughout reproductive

Molecular characterization of a novel quinolizidine alkaloid O-tigloyltransferase: cDNA cloning, catalytic activity of recombinant protein and expression analysis in Lupinus plants.

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Ingia / Ingia

A novel acyltransferase committed to the final step of quinolizidine alkaloid biosynthesis, tigloyl-CoA:(-)-13alpha-hydroxymultiflorine/(+)-13alpha-hydroxylupanine O-tigloyltransferase, has been purified from Lupinus albus. The internal amino acid sequences were determined with protease-digested

Quinolizidine alkaloids and phomopsins in lupin seeds and lupin containing food.

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Ingia / Ingia

In recent years there has been growing interest in replacing (genetically modified) soya by lupin. Lupin seeds, flours and lupin containing food have been analyzed in order to assess the relevance of a potential health hazard given by mycotoxins and/or naturally occurring alkaloids. Since not all

[Lupins - a new source of food for Andean countries. 5. Traditional methods of debittering of lupins by water].

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Ingia / Ingia

The bitter taste of lupin alkaloids can be sensorially detected in water within ppm-range. The strength of the taste diminishes as follows: sparteine, D-Lupanin-perchlorate, lupinine, isolupinine and hydroxylupanine. The swelling capacity of lupin seeds presents different characteristics according

Accumulation of quinolizidine alkaloids in plants and cell suspension cultures: genera lupinus, cytisus, baptisia, genista, laburnum, and sophora.

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Ingia / Ingia

The patterns of quinolizidine alkaloids in cell cultures of 10 species of Fabaceae were analyzed by high-resolution GLC and GLC-MS and compared with the alkaloids present in the leaves of the respective plants. Lupanine was produced in all 10 cell suspension cultures as the main alkaloid. It was

Determination of quinolizidine alkaloids in different Lupinus species by NACE using UV and MS detection.

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Ingia / Ingia

Lupin seeds are important for animal and human nutrition. However, they may contain toxic quinolizidine alkaloids (QA). Analytical methods for a reliable alkaloid determination are therefore of importance. Here the presented study reports on the first CE method for the analysis of QA in Lupinus

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