Author/Authors :
de Oliveira-Júnior, Raimundo Gonçalves Universidade Federal do Vale do Sao Francisco - 56.304-205 Petrolina - PE - Brazil , Rocha Souza, Grasielly Universidade Federal do Vale do Sao Francisco - 56.304-205 Petrolina - PE - Brazil , Adrielly Alves Ferraz, Christiane Universidade Federal do Vale do Sao Francisco - 56.304-205 Petrolina - PE - Brazil , de Oliveira, Ana Paula Universidade Federal do Vale do Sao Francisco - 56.304-205 Petrolina - PE - Brazil , de Souza Araújo, Camila Universidade Federal do Vale do Sao Francisco - 56.304-205 Petrolina - PE - Brazil , de Lima-Saraiva, Sarah Raquel Gomes Universidade Federal do Pernambuco - 50.670-901 Recife - PE, Brazil , Gonçalves Bomfim Reis, Silvio Alan Universidade Federal do Vale do Sao Francisco - 56.304-205 Petrolina - PE - Brazil , Gonçalves, Talita Mota Universidade Federal do Vale do Sao Francisco - 56.304-205 Petrolina - PE - Brazil , Araújo Rolim, Larissa Universidade Federal do Vale do Sao Francisco - 56.304-205 Petrolina - PE - Brazil , Rolim-Neto, Pedro José Universidade Federal do Pernambuco - 50.670-901 Recife - PE, Brazil , Celise Siqueira César, Francine Universidade de Sao Paulo - 14.040-900 Ribeir ˜ ao Preto - SP - Brazil , Guedes da Silva Almeida, Jackson Roberto Universidade Federal do Vale do Sao Francisco - 56.304-205 Petrolina - PE - Brazil
Abstract :
Neoglaziovia variegata is a Bromeliaceae plant species widely found in Brazil with several pharmacological properties, including photoprotective activity. Although herbal-based active ingredients have been applied in cosmetic products, especially for skin treatment, its application in sunscreen formulations remains unexplored. The aim of this work is to evaluate the photoprotective
effect of cosmetic formulations containing hydroalcoholic extract of N. variegata (Nv-HA). Initially, the phenolic and flavonoid total content of Nv-HA were determined. The photoprotective activity of Nv-HA was subsequently assessed using a spectrophotometric
method. Nv-HA was incorporated in O/W emulsions in the presence or absence of synthetic filters and their photoprotective
efficacy was evaluated by spectrophotometric SPF determination. Finally, the stability study of the formulations was performed
through the freezing/defrosting method. Nv-HA showed significant phenolic and flavonoids content (61.66 ± 5.14 mg GAE/g and
90.27 ± 5.03 mg CE/g, resp.). Nv-HA showed SPF values of 5.43 ± 0.07 and 11.73 ± 0.04 for the concentrations of 0.5 and 1.0% (v/v),
respectively. It was verified that Nv-HA potentiated the photoprotective effect of formulations containing only synthetic filters.
Furthermore, the formulations have remained stable at the end of the preliminary stability study. According to the results, it was concluded that Nv-HA can be used as a chemical filter in cosmetic formulations.
Keywords :
Development , Evaluation , Photoprotective O/W , Emulsions , Hydroalcoholic Extract , Neoglaziovia variegata , Bromeliaceae
