Results 31 to 40 of about 253,123 (156)

Pyrrolizidine Alkaloids

, 2023
Předložená bakalářská práce si klade za cíl poskytnou souhrnné informace týkající se zajímavé skupiny sloučenin souhrnně označovaných jako pyrrolizidinové alkaloidy.
Hrbáčová, Tereza
core   +2 more sources

Simultaneous determination of 7 pyrrolizidine alkaloids and their nitrogen oxides in herbal tea by SPE-UPLC-MS/MS [PDF]

Zhongguo niangzao
A analysis method for simultaneous determination of 7 pyrrolizidine alkaloids and their nitrogen oxides (monocrotaline, monocrotaline N- oxide, lycopsamine, lycopsamine-N-oxide, heliosinine, heliosinine-N-oxide, senecionine) in herbal tea was established
WU Zhongling, HE Zhongqiang, HUANG Zhining, SU Ruifen, CHEN Liting, ZHONG Junwei
doaj   +1 more source

Diet and chemical defence in ladybird beetles (Coleoptera: Coccinellidae)

European Journal of Entomology, 2022
In this paper, I review the effects of the diet of ladybirds on chemical defence in this group of beetles. The tendency to reflex bleed and the diversity of autogenously produced alkaloids in different taxa may be evolutionarily related to diet and the ...
John J. SLOGGETT
doaj   +1 more source

Tolerating Toxins: Grasshoppers that Feast on Pyrrolizidine Alkaloids §

CHIMIA, 2018
The elegant grasshopper (Zonocerus elegans) and the variegated grasshopper (Z. variegatus) are among insects that deliberately consume and store pyrrolizidine alkaloids which are subsequently used in defence mechanisms.
Catherine E. Housecroft
doaj   +1 more source

Pyrrolizidine alkaloids from Bulgarian species of the genus Senecio [PDF]

Journal of the Serbian Chemical Society, 2006
Nine Bulgarian species from the genus Senecio were studied phytochemically and/or by GC-MS analysis. Senecivernine-N-oxide was isolated and identified by spectral data for the first time.
Kostova Nadezhda, Christov Veselin, Cholakova Maia, Nikolova Elena, Evstatieva Liuba   +4 more
doaj   +3 more sources

Levels, Toxic Effects, and Risk Assessment of Pyrrolizidine Alkaloids in Foods: A Review

Foods
Pyrrolizidine alkaloids (PAs) are naturally occurring secondary metabolites of plants. To date, more than 660 types of PAs have been identified from an estimated 6000 plants, and approximately 120 of these PAs are hepatotoxic.
Yu-Shun Lu, Jing Qiu, Xiyan Mu, Yong-Zhong Qian, Lu Chen   +4 more
semanticscholar   +1 more source

Pyrrolizidine Alkaloids and Fatty Acids from the Endemic Plant Species Rindera umbellata and the Effect of Lindelofine-N-oxide on Tubulin Polymerization

Molecules, 2013
The examination of the aerial parts, roots, and seeds of the endemic plant Rindera umbellata is reported in this paper for the first time. Phytochemical investigation of R.
Vlatka V. Vajs, Vele V. Tešević, Snežana D. Nikolić-Mandić, Snežana S. Trifunović, Miroslav M. Novaković, Ljubodrag V. Vujisić, Ivan M. Vučković, Milena R. Simić, Boris M. Mandić, Slobodan M. Milosavljević   +9 more
doaj   +1 more source

Phytochemistry, Toxicology and Therapeutic Value of Petasites hybridus Subsp. Ochroleucus (Common Butterbur) from the Balkans

Plants, 2020
Petasites hybridus (Common butterbur) is extensively used in traditional medicine, and is currently gaining interest and popularity as a food supplement and for its medicinal properties.
Tatjana Mihajilov-Krstev, Boris Jovanović, Bojan Zlatković, Jelena Matejić, Jelena Vitorović, Vladimir Cvetković, Budimir Ilić, Ljubiša Đorđević, Nataša Joković, Dragoljub Miladinović, Tatjana Jakšić, Nemanja Stanković, Vesna Stankov Jovanović, Nirit Bernstein   +13 more
doaj   +1 more source

Pyrrolizidine alkaloids-induced hepatic sinusoidal obstruction syndrome: Pathogenesis, clinical manifestations, diagnosis, treatment, and outcomes

World Journal of Gastroenterology, 2019
Hepatic sinusoidal obstruction syndrome (HSOS) can be caused by the intake of pyrrolizidine alkaloids (PAs). To date, PAs-induced HSOS has not been extensively studied.
Xiao-Qian Yang, Jin Ye, Xin Li, Qian Li, Yu-Hu Song   +4 more
semanticscholar   +1 more source

Pyrrolizidine alkaloids of senecio sp from Peru

Química Nova, 2011
Six pyrrolizidine alkaloids (PAs) (two saturated macrocyclic, three unsaturated macrocyclic and one unsaturated seco-macrocyclic) were isolated from native Peruvian Senecio species.
Liliana Ruiz Vásquez and Matías Reina Artiles, Azucena González Coloma, Raimundo Cabrera Pérez, Lastenia Ruiz Mesia   +3 more
doaj   +1 more source