scholarly journals The effect of alkaloid composition of larkspur (Delphinium) species on the intoxication of Angus heifers1

2019 ◽  
Vol 97 (3) ◽  
pp. 1415-1423 ◽  
Author(s):  
Benedict T Green ◽  
Dale R Gardner ◽  
James A Pfister ◽  
Kevin D Welch ◽  
Gary L Bennett ◽  
...  
Keyword(s):  
Alkaloid Composition

scholarly journals Altitudinal Variation in Alkaloid Composition of Hyoscyamus niger: A study with reference to Kashmir region of Himalayas

2018 ◽  
Vol 4 (3) ◽  
pp. 13
Author(s):  
Sheema Zaffar ◽  
Ieba Khan ◽  
Asma Zaffar ◽  
Azra N Kamili
Keyword(s):  
Resource Allocation ◽  
Hyoscyamus Niger ◽  
Kashmir Valley ◽  
Altitudinal Variation ◽  
Alkaloid Composition ◽  
Commercial Cultivation ◽  
Distributional Range ◽  
The Impact ◽  
Hyoscyamine And Scopolamine

The present study has been undertaken to understand the impact of altitude on the synthesis of alkaloids in Hyoscyamus niger found in Kashmir valley of J&K state in India. Given its wide distributional range, the study aimed to quantify the alkaloids (hyoscyamine and scopolamine) in Hyoscyamus niger grown at various altitudes in Kashmir valley. The sampling of populations at varying altitudes allowed assessing the intraspecieac variation and ecological trends of accumulation of alkaloids in the plant. Furthermore the resource allocation in the parts of the plant has also been shown. The four different sites were Gulmarg, Pahalgam, Gurez and Qazigund in Kashmir valley. The study was able to identify the elite genotype and the best suited habitat (altitude) for commercial cultivation of the species with higher quantity of alkaloids.

Pyrrolizidine Alkaloid Composition Influences Cinnabar Moth Oviposition Preferences in Jacobaea Hybrids

2013 ◽  
Vol 39 (3) ◽  
pp. 430-437 ◽  
Author(s):  
Dandan Cheng ◽  
Eddy van der Meijden ◽  
Patrick P. J. Mulder ◽  
Klaas Vrieling ◽  
Peter G. L. Klinkhamer
Keyword(s):  
Pyrrolizidine Alkaloid ◽  
Alkaloid Composition ◽  
Oviposition Preferences ◽  
Cinnabar Moth

Variation in piperidine alkaloid chemistry of Norway spruce (Picea abies) foliage in diverse geographic origins grown in the same area

2016 ◽  
Vol 46 (4) ◽  
pp. 456-460 ◽  
Author(s):  
V. Virjamo ◽  
R. Julkunen-Tiitto
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Dilution Effect ◽  
Growth Conditions ◽  
Piperidine Alkaloids ◽  
Needle Size ◽  
Positive Correlation ◽  
Alkaloid Composition ◽  
Geographic Origins ◽  
Genotype Variation

Volatile piperidine alkaloids are widespread compounds found in low amounts in coniferous species. Here, we investigated the variation of piperidine alkaloid chemistry of Norway spruce (Picea abies (L.) Karst.) in a provenance-type experiment. Volatile piperidine alkaloids were analysed from current-year mature needles of 12 geographical origins grown for 35 years at the same site. Results indicate that, despite long-lasting similar growth conditions, origins were still showing different alkaloid composition and concentrations, indicating solid genotype variation. The highest total piperidine alkaloid concentrations were detected in the northernmost origins, and a marked positive correlation between piperidine alkaloid concentrations and latitude was found. Positive correlation with latitude seems to be closely linked to negative correlation with annual temperature sum of origins. Interestingly, the changes in concentrations detected were not related to needle size and dilution effect. Regarding the possible herbivore-defense role of P. abies piperidine alkaloids, the high variation between origins could play a role for preventing the invasion of genotypes from different geographical areas.

scholarly journals Quinolizidine Alkaloid Profiles of Two Taxa of Teline maderensis

2003 ◽  
Vol 58 (11-12) ◽  
pp. 776-778 ◽  
Author(s):  
Alice Martins ◽  
Michael Wink ◽  
Andreas Tei ◽  
Amélia P. Rauter
Keyword(s):  
The Other ◽  
Minor Constituent ◽  
Alkaloid Composition ◽  
Quinolizidine Alkaloid ◽  
Aerial Parts ◽  
Capillary Glc ◽  
A Minor ◽  
Alkaloid Profiles

Abstract The alkaloid composition of the aerial parts of two taxa of Teline maderensis was studied by capillary GLC and GLC-MS. N-Methylcytisine was the major alkaloid found in both plants. Contents of cytisine and lupanine were higher in T. maderensis var. paivae while anagyrine content was more pronounced in T. maderensis var. maderensis. The alkaloids dehydrocytisine, N-acetylcytisine and epibaptifoline appeared only in T. maderensis var. maderensis and N-formylcytisine was identified as a minor constituent in T. maderensis var. paivae, and detected only in trace amounts in the other variety of the plant.

Pyrrolizidine Alkaloid Composition of Three Chinese Medicinal Herbs, Eupatorium cannabinum, E. japonicum and Crotalaria assamica

1992 ◽  
Vol 20 (03n04) ◽  
pp. 281-288 ◽  
Author(s):  
J. A. Edgar ◽  
H. J. Lin ◽  
C. R. Kumana ◽  
M. M. T. Ng
Keyword(s):  
Mass Spectrometry ◽  
Fast Atom Bombardment ◽  
Pyrrolizidine Alkaloid ◽  
Chinese Herbs ◽  
Chinese Medicinal Herbs ◽  
Electron Impact Mass Spectrometry ◽  
Alkaloid Composition ◽  
Electron Impact Mass ◽  
Eupatorium Cannabinum ◽  
Impact Mass

The pyrrolizidine alkaloid composition of three Chinese herbs, "pei lan", "cheng gan cao" and "zi xiao rong" identified respectively as Eupatorium cannabinum, Eupatorium japonicum (Compositae) and Crotalaria assamica (Leguminosae), were studied by fast atom bombardment mass spectrometry and gas chromatography-electron impact mass spectrometry. Viridiflorine, cynaustraline, amabiline, supinine, echinatine, rinderine and isomers of these alkaloids were found in the Eupatorium species. Monocrotaline was the only pyrrolizidine alkaloid detected in the Crotalaria species.

scholarly journals Comparative Study of Alkaloid Pattern of Four Bulgarian Fumaria Species

2016 ◽  
Vol 11 (2) ◽  
pp. 1934578X1601100 ◽  
Author(s):  
Tsvetelina Doncheva ◽  
Gabriela Yordanova ◽  
Vassil Vutov ◽  
Nadezhda Kostova ◽  
Stefan Philipov
Keyword(s):  
Comparative Study ◽  
Isoquinoline Alkaloids ◽  
Alkaloid Composition ◽  
Phytochemical Investigation ◽  
Group A ◽  
Group B ◽  
First Time

The alkaloid pattern of four Fumaria species ( Fumaria kralikii, Fumaria rostellata, Fumaria schleicherii, Fumaria thuretii) growing in Bulgaria was investigated by GC-MS and twenty isoquinoline alkaloids were determined. Phytochemical investigation of the alkaloid composition on Fumaria thuretii Boiss was made for the first time. The alkaloid profile of the species was compared at two levels, between different species and within two species from different habitats. Two chemotypical groups, based on the types of isoquinoline alkaloids were suggested. To group A belong species F. kralikii, F. rostellata (F. r. 1) and F. thuretii containing more than 50% spirobenzylisoquinoline alkaloids of the crude alkaloid mixtures. To group B belong species F. rostellata (F. r. 2) and F. schleicherii containing more than 40% protopine alkaloids and relatively high percentage phthaldeisoquinoline alkaloids (11–19%). In group A phthaldeisoquinoline alkaloids were not detected.

Tropane and Pyrrolidine Alkaloids from Convolvulus lanatus Vahl

2008 ◽  
Vol 63 (5-6) ◽  
pp. 321-325 ◽  
Author(s):  
Assem El-Shazly ◽  
Michael Wink
Keyword(s):  
Retention Indices ◽  
Major Constituent ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
Qualitative And Quantitative ◽  
Alkaloid Composition ◽  
Kováts Retention Indices ◽  
Aerial Parts ◽  
Pyrrolidine Alkaloids ◽  
First Time

The alkaloid composition of Convolvulus lanatus was investigated by GLC and GLCMS. Altogether, thirteen tropane and pyrrolidine alkaloids were identified on the basis of mass spectral data and/or Kovats retention indices. Twelve of them have been recorded for the first time in this plant and some of these alkaloids were identified for the first time in the genus Convolvulus. Cuscohygrine is the major constituent. Qualitative and quantitative differences of root and aerial parts are discussed.

Seasonal variation in alkaloid composition and antiproliferative activity of Stylophorum lasiocarpum (Oliv.) Fedde

2015 ◽  
Vol 69 (5) ◽  
Author(s):  
Kristýna Šebrlová ◽  
Ondřej Peš ◽  
Iva Slaninová ◽  
Ondřej Vymazal ◽  
Jana Kantorová ◽  
...  
Keyword(s):  
Aerial Part ◽  
Vegetation Period ◽  
Root Extract ◽  
Human Malignant Melanoma ◽  
Alkaloid Composition ◽  
Protoberberine Alkaloids ◽  
Dose Dependent ◽  
Minimal Information ◽  
Time Of Harvest ◽  
Antiproliferative Activities

AbstractStylophorum lasiocarpum (Oliv.) Fedde (Papaveraceae) belongs to traditional Chinese medicine herbs but there was minimal information on the content of alkaloids in this plant. Extracts from the aerial part and roots were examined by liquid chromatography with UV and mass spectrometric detection, with nineteen alkaloids identified. Changes in alkaloid content over the entire vegetation period of a one- and two-year old plant were studied. The protoberberine alkaloids, coptisine and stylopine, were found to be the main substances in extracts of the aerial part irrespective of the plant’s age and time of harvest. Variable amounts of protopine, sanguinarine, chelerythrine, chelirubine, macarpine, chelilutine and berberine were also recorded in the aerial part. The roots contained significantly larger quantities of all alkaloids than the aerial part with the levels of most alkaloids varying from May to October, peaking in the middle of the vegetation period. Coptisine was the dominant alkaloid in all samples. The antiproliferative activities of the root extract and of seven individual alkaloids were tested on A375 human malignant melanoma cells. The significant dose-dependent toxicity of the root extract was attributed largely to the quaternary benzo[c]phenanthridine alkaloids, macarpine and sanguinarine.

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