2012
DOI: 10.1590/s0100-40422012000900021
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Abstract: Recebido em 26/3/12; aceito em 4/6/12; publicado na web em 24/8/12 CHARACTERIZATION OF TEAS FROM Lippia gracilis Schauer GENOTYPES BY HPLC-DAD CHROMATOGRAPHIC PROFILE COMBINED WITH CHEMOMETRIC ANALYSES. In order to evaluate the effects of environmental factors on the content of secondary metabolites, the chemical profiles of infusions from leaves of seven genotypes of Lippia gracilis Schauer, sourced from two locations (Sergipe and Bahia state) and collected during different seasons: summer (with and without i… Show more

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Cited by 3 publications
(4 citation statements)
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“…In the Neotropics, the relationship between specialized metabolites concentration and precipitation has mostly been focused on ecosystems with higher seasonality (e.g., central Amazon, Brazilian Cerrado, Atlantic forest). In various studies, concentration rates of compounds (e.g., tannins, sesquiterpenes, essential oils) or specific metabolites (e.g., emodin, goyazensolide) have been positively or negatively correlated with precipitation seasonality [6][7][8]44]. However, other studies did not find any correlation between certain compounds (e.g., tannins, sesquiterpenes, lactones) and precipitation intensity (i.e., dry or rainy season; [47,48]).…”
Section: Discussionmentioning
confidence: 99%
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“…In the Neotropics, the relationship between specialized metabolites concentration and precipitation has mostly been focused on ecosystems with higher seasonality (e.g., central Amazon, Brazilian Cerrado, Atlantic forest). In various studies, concentration rates of compounds (e.g., tannins, sesquiterpenes, essential oils) or specific metabolites (e.g., emodin, goyazensolide) have been positively or negatively correlated with precipitation seasonality [6][7][8]44]. However, other studies did not find any correlation between certain compounds (e.g., tannins, sesquiterpenes, lactones) and precipitation intensity (i.e., dry or rainy season; [47,48]).…”
Section: Discussionmentioning
confidence: 99%
“…Samplings of leaves were realized during the same daytime intervals of sampling of insects (i.e., between 8.00 and 14.00 h), on sunny days (without rain), with temperatures of 26-28.1 • C. All plants were found growing under similar luminosity conditions on small gaps or towards the edge of the forest, considering that Himatanthus species are heliophilics [29]. Similar conditions for sampling contributed to reducing any bias of the compound quantification [7,23,44,47]. Only intact leaves were collected, considering that those attacked by the herbivores were completely consumed (field observation).…”
Section: Sampling Of Plant Materialsmentioning
confidence: 99%
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“…que apresenta a coloração violeta torna-se amarela. A intensidade deste descoramento indica a habilidade do antioxidante em sequestrar radicais livres, uma vez que a base do ensaio de DPPH é a eliminação desse radical livre estável por meio da adição de compostos capazes de doar um átomo de hidrogênio, gerando sua forma reduzida (Figura 4) com perda da cor violeta(PRADO, 2012;NUR ALAM et al, 2013).Neste ensaio, todos os extratos de V. aff. guianensis foram ativos, apresentando resultados entre 1460,9 ± 3,8 a 1592,6 ± 3,8 μM ET.…”
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