Análise fitoquímica e atividade fotoprotetora de extrato etanólico de Euphorbia tirucalli Linneau (Euphorbiaceae)

Abstract

Palavras-chave: Euphorbia tirucalli Linneau, avelós, atividade fotoprotetora A B S T R A C T: P h y t o c h e m i c a l a n a l y s i s a n d p h o t o p r o t e c t i v e a c t i v i t y o f theethanolic extract of Euphorbia tirucalli Linneau (Euphorbiaceae).Euphorbia tirucalli Linneau, popularly known as "avelos", "naked cock" or "naked dog", is used in popular medicinein order to treat cancer, antibiotic and antiviral diseases. Herbal medicines are often employed in order to assist or replace conventional therapies for the treatment of several diseases, including the prevention of the damage caused by ultraviolet radiation. Thus, the aim of this research was to evaluate the photoprotective potential and phytochemical screening of the ethanol extract of the aerial parts of avelos. The photoprotective activity was assessed by in vitrotrials according to the method adapted from Mansur, using the ethanol extract of the aerial parts. The results showed that the phytochemical study revealed the presence of reducing sugars, alkaloids, phenols, flavonoids, tannins, saponins, steroids and triterpenoids in ethanolic fraction. The extract showed antioxidant activity (EC 50 ) of 16,98 ± 0,35 μg.mL -1 , phenolic contents of 96,18 ± 1,33 mg EqAG/g and 63,57 ± 2,74 flavonoids from mg EqC/g that can advantage the photoprotective activity. Assessing the sun protection factor, it can be observed that all the tested concentrations (0,01 to 0,1 μg.mL -1 ) showed potential for photoprotection from ultraviolet radiation with a range of 6,05 to 19,84 FPS, respectively. These results suggest that the ethanol extract of Euphorbia tirucalli Linneau presents possible photoprotective effect.

Biological activities: anti-infectious, antioxidant and healing of the vegetable species Jatropha multifida

“…J. multifida has been popularly used to treat various conditions, such as fever, pain, infection, wounds, ulcers and various infectious skin diseases (38) . Thus, several studies have focused on the biological properties of the plant, and initial research shows that this plant species has shown antioxidant, antibacterial, antiinflammatory, antifungal, gastroprotective, healing, analgesic, immunomodulatory activity, among others (39) .…”

“…These results suggest that the featured plant may have potent skin lightening ingredients, which corroborates other studies that address the photoprotective power developed by several plant species. The result of a research entitled "Análise fitoquímica e atividade fotoprotetora de extrato etanólico de Euphorbia tirucalli L. (Euphorbiaceae)", belonging to the same family as Jatropha, suggests that its ethanol extract has a possible photoprotective effect (38) .…”

Avaliação físico-química e atividades biológicas do extrato de uvaia (Eugenia pyriformis Camb.)

“…As plantas representam um importante banco de moléculas fitoquímicas de grande importância para o homem, a fotoproteção apresenta vários estudos com extratos vegetais, visto que, devido a sua composição fitoquímica formam uma camada protetora sobre a derme prevenindo as queimaduras causadas pelas fontes de radiação ultravioleta. As fontes UV, são deletérias para as células, causando a nível celular o desenvolvimento de cânceres como melanoma e o envelhecimento precose Vale, 2015;Vieira e Orlanda, 2018).…”

Development of a Phytocosmetic Enriched with Pequi (Caryocar brasiliense Cambess) Oil

“…According to Saewan and coauthors [69], the presence of phenolic compounds in photoprotective emulsions take a prominent position in terms of the spectral absorption of the solar radiation in the UVB range with antiaging and photoprotection purposes [70]. The Mansur method, used to determine the sun protection factor (SPF), resulted the photoprotective activity of the pequi oil present in the formulation.…”