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- W4382862980 abstract "Schinus terebinthifolia Raddi is widely used in traditional Brazilian medicine to treat respiratory diseases, as an antiseptic, anti-inflammatory, and hemostatic agent. This study aimed to evaluate the influence of climatic parameters on the yield, antioxidative capacity, and chemical composition of the S. terebinthifolia leaf essential oil. The specimen was collected monthly from October 2021 to September 2022. Leaf essential oils (EOs) were obtained by hydrodistillation, and their chemical compositions were analyzed by gas chromatography/mass spectrometry (GC/MS). Statistical analyses were performed to verify the climatic influences on the yields, chemical composition, and antioxidative capacity. The DPPH (2,2-diphenyl-1-picrylhydrazyl) radical-scavenging and inhibition of β-carotene/linoleic acid oxidation assays were performed to assess the antioxidant activity. The leaf essential oil yields ranged from 0.1% (July) to 0.7% (May and September), averaging 0.5 ± 0.2%. There was no significant difference in essential oil production during the dry (0.4 ± 0.2%) and rainy (0.6 ± 0.1%) seasons. The main chemical constituents identified in essential oils were limonene (11.42-56.24%), δ-3-carene (8.70-33.16%) and (E)-caryophyllene (4.10-24.98%). The limonene annual average was 43.57 ± 12.74% and showed no statistical difference during the dry (40.53 ± 13.38%) and rainy (52.68 ± 3.27%) seasons. Likewise, the annual average of δ-3-carene was 22.55 ± 7.11%, displaying no statistical difference between dry (26.35 ± 7.90%) and rainy (31.14 ± 1.63%) seasons. The annual average of (E)-caryophyllene was 11.07 ± 7.15% and this constituent did not show a statistical difference in Tukey's test (p > 0.05) during the dry (12.72 ± 7.56%) and rainy (6.10 ± 1.78%) season. Limonene showed a moderate positive and significant correlation (p < 0.05) with precipitation (r = 0.56) and a weak correlation with temperature (r = -0.40), humidity (r = 0.40), and insolation (r = -0.44). All samples inhibited the oxidation in the β-carotene/linoleic acid system (22.78-44.15%) but displayed no activity in the DPPH method." @default.
- W4382862980 created "2023-07-02" @default.
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- W4382862980 date "2023-06-29" @default.
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- W4382862980 title "Seasonality, Composition, and Antioxidant Capacity of Limonene/δ-3-Carene/(E)-Caryophyllene Schinus terebinthifolia Essential Oil Chemotype from the Brazilian Amazon: A Chemometric Approach" @default.
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- W4382862980 doi "https://doi.org/10.3390/plants12132497" @default.
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