Chemometric analysis of the seasonal variation in the essential oil composition and antioxidant activity of a new geraniol chemotype of Lippia alba (Mill.) N.E.Br. ex Britton & P. Wilson from the Brazilian Amazon was written by Barros, Luana de Sousa Peixoto;Santos da Cruz, Ellen de Nazare;de Araujo Guimaraes, Bruna;Setzer, William N.;Veras Mourao, Rosa Helena;do Rosario da Silva, Joyce Kelly;Silva da Costa, Jamile;Baia Figueiredo, Pablo Luis. And the article was included in Biochemical Systematics and Ecology in 2022.HPLC of Formula: 3391-86-4 This article mentions the following:
Lippia alba (Mill.) N.E.Br. ex Britton & P.Wilson is an aromatic shrub native and not endemic to Brazil, popularly known as lemon balm, and widely used throughout Brazil in folk medicine. This study aimed to evaluate the influence of climatic parameters on the yield, radical-scavenging, and chem. composition of the L. alba essential oil. The specimen was collected monthly from August/2021 to May/2022. Essential oils (EOs) were obtained by hydrodistillation, and GC-MS analyzed their chem. composition Chemometric analyses were performed to verify the climatic influences on the yields, chem. composition, and radical-scavenging apacity on L. alba EOs. The radical-scavenging capacity was performed by the DPPH radical-scavenging method. The lowest oil yield was obtained in Oct. (0.6%) and the highest in March (2.2%). The average yields in the dry season (August-Feb., 1.1 ± 0.3%) did not show a statistical difference with the rainy season (Apr.-May, 1.7 ± 0.5%). On the other hand, there was a strong and significant correlation between oil yields and humidity (r = 0.79), precipitation (r = 0.77) and insolation (r = -0.76). Oxygenated monoterpenoids (44.4-66.8%), followed by oxygenated sesquiterpenoids (11.1-26.4%) were predominant in the EOs. The major constituents in the EO were geraniol (21.0-46.9%, average 37.5 ± 8.0%) and elemol (9.0-22.2%). The average amounts of geraniol in the dry season (37.9 ± 5.8%) did not show statistical difference with the rainy season (36.5 ± 13.7%). Furthermore, there was no significant correlation between geraniol and elemol amounts with climatic parameters. The PCA anal. showed a separation between the samples from the dry and rainy seasons, and classified them into three groups: groups I and III (rainy season) and group II (dry season). Geraniol standard content showed a moderate correlation (r = 0.52) with antioxidant capacity. In the experiment, the researchers used many compounds, for example, Oct-1-en-3-ol (cas: 3391-86-4HPLC of Formula: 3391-86-4).
Oct-1-en-3-ol (cas: 3391-86-4) belongs to alcohols. Alcohols are among the most common organic compounds. They are used as sweeteners and in making perfumes, are valuable intermediates in the synthesis of other compounds, and are among the most abundantly produced organic chemicals in industry. Alcohols may be oxidized to give ketones, aldehydes, and carboxylic acids. These functional groups are useful for further reactions. Oxidation of organic compounds generally increases the number of bonds from carbon to oxygen (or another electronegative element, such as a halogen), and it may decrease the number of bonds to hydrogen.HPLC of Formula: 3391-86-4
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