Results 111 to 120 of about 253,123 (156)

Assessing Mutagenicity of Methanolic Exteract of Borage Flower (Echium amuenum) Using Ames Bioassay

Iranian South Medical Journal, 2014
Background: pyrrolizidine alkaloids have been isolated from Echium amuenum. These alkaloids knowing as hepatotoxic, damage the liver. Mutagenicity of pure pyrrolizidine alkaloids has been identified.
Meysam Moosavi, Amir Jalali, Farzaneh Kianipour, Amir Siahpoosh, Ahmad Farajzadeh-Shikh   +4 more
doaj  

Development of a High-Resolution Tandem Mass Spectral Library for Pyrrolizidine Alkaloids (PASL)

Scientific Data
This Data Descriptor reports the submission of a High-Resolution Orbitrap Mass Spectral Library of Pyrrolizidine Alkaloids (PASL) to public repositories.
Leonie V. Straub, Patrick P. J. Mulder, Han Zuilhof, Federico Padilla Gonzalez, Laura Righetti   +4 more
doaj   +1 more source

Pyrrolizidine alkaloids as contaminants

Pirolizidinski alkaloidi su tvari koje prirodno nalazimo u nekim biljnim vrstama (pretežito vrste porodica Boraginaceae, Compositae/Asteraceae, Leguminosae/Fabaceae, Apocynaceae, Ranunculaceae, Scrophulariaceae), a produkt su njihovog sekundarnog ...
Kireta, Lucija
core   +1 more source

Dietary alkaloids and the development of androconial organs in Estigmene acrea

Journal of Insect Science, 2003
Male salt marsh moths, Estigmene acrea (Lepidoptera: Arctiidae), possess inflatable androconial organs called coremata. Prior to mating males form aggregations and inflate their coremata en masse.
Jason W. Davenport, William E. Conner
doaj  

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Nanoflow liquid chromatography mass spectrometry method for quantitative analysis and target ion screening of pyrrolizidine alkaloids in honey, tea, herbal tinctures, and milk.

Journal of Chromatography A, 2022
A method for the determination of pyrrolizidine alkaloids in tea, honey, herbal tinctures, and milk samples was developed by employing nano-LC-MS with high-resolution Orbitrap mass spectrometry.
Mārtiņš Jansons, D. Fedorenko, Romans Pavlenko, Zane Bērziņa, V. Bartkevičs   +4 more
semanticscholar   +1 more source

Dissipation pattern and conversion of pyrrolizidine alkaloids (PAs) and pyrrolizidine alkaloid N-oxides (PANOs) during tea manufacturing and brewing.

Food Chemistry, 2022
Pyrrolizidine alkaloids (PAs) and pyrrolizidine alkaloid N-oxides (PANOs) are toxic secondary metabolites in plants, and one kind of main exogenous pollutants of tea.
Haolei Han, Changling Jiang, Chen Wang, Yuting Lu, Zi-Qi Wang, Yun-Feng Chai, Xiangchun Zhang, Xin Liu, Cheng-Yin Lu, Hongping Chen   +9 more
semanticscholar   +1 more source

Pyrrolizidine alkaloids from Cryptantha species

Phytochemistry, 1993
In the first alkaloid investigation of the genus Cryptantha (Boraginaceae), pyrrolizidine alkaloids were identified from C. cana, C. clevelandii, C. confertiflora, C. flava, C. fendleri, C. leiocarpa, C. thyrsiflora, C. virgata and C. virginensis.
Frank R Stermitz
exaly   +2 more sources

A novel approach for fast and simple determination pyrrolizidine alkaloids in herbs by ultrasound-assisted dispersive solid phase extraction method coupled to liquid chromatography-tandem mass spectrometry.

Journal of Pharmaceutical and Biomedical Analysis, 2020
Pyrrolizidine alkaloids (PAs) are secondary plant metabolites witch can contaminate food, especially herbs. Due to the fact that alkaloids have a strong adverse effect on human health, it is necessary to use sensitive and selective detection methods.
P. Kaczyński, B. Łozowicka
semanticscholar   +1 more source

Pyrrolizidine alkaloids from Echium glomeratum (Boraginaceae) [PDF]

Phytochemistry, 2008
The methanolic extract of the whole plant of Echium glomeratum Poir. (Boraginaceae) has afforded five pyrrolizidine alkaloids, three that were (7S, 8R)-petranine (1), (7S, 8S)-petranine (2), and (7R, 8R)-petranine (3a) or (7R, 8S)-petranine (3b ...
Feras Alali, Nicholas Oberlies, Amjad M Qandil   +2 more
exaly   +1 more source

Echium plantagineum L. honey: Search of pyrrolizidine alkaloids and polyphenols, anti-inflammatory potential and cytotoxicity.

Food Chemistry, 2020
For a long time, honey has been recognized for its health-promoting properties and, consequently, has been used in traditional medicine worldwide. Apart from the beneficial bioactive compounds found in this food (e.g.
Rute Moreira, Fátima Fernandes, P. Valentão, D. Pereira, P. Andrade   +4 more
semanticscholar   +1 more source