English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Reactive oxygen species (ROS) are capable of oxidizing cellular proteins, nucleic acids and lipids, contributing to cellular aging, mutagenesis, carcinogenesis, coronary heart and neurodegenerative diseases. Free radicals-scavenging by phenolic compounds occurs by the transfer of one electron followed by the H-abstraction. In order to evaluate the antioxidant activity of a series of seventeen phenolic compounds extracted from Brazilian flora (Chimarrhis turbinata and Arrabidea samydoides), some physicochemical parameters (heat formation of the neutral, radical, and cationic compounds; orbitals' energies; ClogP; &#916;H OX; and &#916;Hf) were calculated. Considering the results from the calculated descriptors, the molecules 10a-f can be classified as having a higher antioxidant activity.Espécies reativas de oxigênio (ROS) são capazes de oxidar proteínas celulares, ácidos nucléicos e lipídios; contribuindo para os processos de envelhecimento celular, mutações genéticas, doenças coronarianas, neoplásicas, degenerativas, dentre outras. Compostos fenólicos neutralizam a reatividade radicalar através da transferência de um elétron da sua estrutura molecular, seguida da abstração de um próton. Este trabalho avaliou a atividade antioxidante de dezessete compostos fenólicos, extraídos de duas plantas da flora nacional (Chimarrhis turbinata e Arrabidea samydoides). Através da modelagem molecular foram obtidos diversos parâmetros, como energias orbitalares, calor de formação das espécies neutras, radicalares e catiônicas, &#916;H OX, &#916;Hf e ClogP; que permitem predizer a atividade e indicar maior poder antioxidante nas moléculas 10 (a a f) para avaliação experimental

Molecular physicochemical parameters predicting antioxidant activity of Brazilian natural products