Results 21 to 30 of about 24,566 (207)

Amino acids L-phenylalanine and L-lysine involvement in trans and cis piperamides biosynthesis in two Piper species

open access: yesBrazilian Journal of Biology, 2023
Several Piper species accumulate piperamides as secondary metabolites, and although they have relevant biological importance, many details of their biosynthetic pathways have not yet been described experimentally.
F. Cotinguiba   +8 more
doaj   +1 more source

Protonation and ring closure of stereoisomeric alpha-substituted cinnamic acids in superacidic media studied by 13C NMR spectroscopy and computations [PDF]

open access: yes, 1998
Five alpha-substituted cinnamic acids [(E)- and (Z)-2,3-diphenyl-, (E)- and (Z)-3-(2-methoxyphenyl)-2-phenyl- and (E)-2-(2-methoxyphenyl)-3-phenyl-propenoic acids] have been protonated in fluorosulfonic acid at -78 degrees C, Protonation of the ...
Burrichter, Arwed   +5 more
core   +1 more source

Antioxidant activity and phenolic profile of selected organic and conventional honeys from Poland [PDF]

open access: yes, 2020
Honey is a natural food product hypothesized to have significant health-beneficial value. The results of recent studies indicate that the biological activity of honey can also be ascribed to phenolic compounds and their antioxidant activity.
Groth, Sabrina   +4 more
core   +1 more source

Effect of Trans-cinnamic Acid on Cognitive Deficit, Cell Density of CA1/CA3 Regions, and Cholinergic Activity of Hippocampus in Trimethylettin Model of Alzheimer\'s Disease [PDF]

open access: yesMajallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Īlām, 2023
Introduction: Trimethyltin (TMT) intoxication is associated with damage to the cholinergic system in the hippocampus. The aim of this study was to evaluate the effect of trans-cinnamic acid on cognitive deficit and cell damage in CA1/CA3 regions of the ...
Shima Mokhtarkia   +1 more
doaj  

Molecular phenotyping of the pal1 and pal2 mutants of Arabidopsis thaliana reveals far-reaching consequences on phenylpropanoid, amino acid, and carbohydrate metabolism [PDF]

open access: yes, 2004
The first enzyme of the phenylpropanoid pathway, Phe ammonia-lyase (PAL), is encoded by four genes in Arabidopsis thaliana. Whereas PAL function is well established in various plants, an insight into the functional significance of individual gene family ...
Boerjan, Wout   +13 more
core   +3 more sources

Allelochemical effects on net nitrate uptake and plasma membrane H+-ATPase activity in maize seedlings

open access: yesBiologia Plantarum, 2010
Seven-day-old maize seedlings grown in a nitrogen-free hydroponic culture were exposed for 48 h to 0, 100 and 300 μM trans-cinnamic, p-coumaric, ferulic, caffeic acids, umbelliferone and 200 μM KNO3.
M. R. Abenavoli   +3 more
doaj   +1 more source

Cytotoxicity and antimicrobial action of selected phytochemicals against planktonic and sessile Streptococcus mutans [PDF]

open access: yesPeerJ, 2018
Background Dental caries remains the most prevalent and costly oral infectious disease worldwide, encouraging the search for new and more effective antimicrobials.
Marta Ribeiro   +4 more
doaj   +2 more sources

Studies of the physiology, pharmacology, and biochemistry of the auxins [PDF]

open access: yes, 1952
Several excellent reviews of auxin matters have appeared during the past few years dealing broadly with the subject as a whole, such as the Wisconsin Symposium on Plant Growth Substances whleh is referred to repeatedly below, as well as reviews of more ...
Bandurski­, Robert S., Bonner, James
core   +1 more source

Chemical Composition of Gas- and Aerosol-Phase Products from the Photooxidation of Naphthalene [PDF]

open access: yes, 2010
The current work focuses on the detailed evolution of the chemical composition of both the gas- and aerosol-phase constituents produced from the OH-initiated photooxidation of naphthalene under low- and high-NO_x conditions.
Chan, A. W. H.   +9 more
core   +2 more sources

Biostimulant Effects of Seed-Applied Sedaxane Fungicide: Morphological and Physiological Changes in Maize Seedlings [PDF]

open access: yes, 2017
Most crops are routinely protected against seed-born and soil-borne fungal pathogens through seed-applied fungicides. The recently released succinate dehydrogenase inhibitor (SDHI), sedaxane®, is a broad-spectrum fungicide, used particularly to control ...
DAL CORTIVO, Cristian   +5 more
core   +9 more sources

Home - About - Disclaimer - Privacy