Determinación de la actividad fotoprotectora in-vitro del aceite esencial de Minthostachys mollis

Norma Cecilia Toaquiza Aguagallo; Alida  Pérez Colmenares; Carina Guadalupe  Valdivieso Ruiz

doi:10.70577/asce.v5i3.1083

Authors

Norma Cecilia Toaquiza Aguagallo Universidad Estatal de Bolivar https://orcid.org/0000-0002-5068-6691
Alida Pérez Colmenares Universidad de Los Andes https://orcid.org/0000-0001-8910-4663
Carina Guadalupe Valdivieso Ruiz Universidad Estatal de Bolivar https://orcid.org/0009-0004-6719-5233

DOI:

https://doi.org/10.70577/asce.v5i3.1083

Keywords:

essential oil; photoprotective activity Mansur, Volgeman; Mintostachys mollis

Abstract

The essential oil of Minthostachys mollis, known as “muña,” contains polyphenols and antioxidants that can act as photoprotective agents by absorbing some of the ultraviolet radiation and neutralizing the reactive oxygen species generated by sun exposure; however, evidence of photoprotection in this species is limited. The objective of this study was to determine the photoprotective activity of M. mollis essential oil. The essential oil from flowers and leaves collected in the Province of Chimborazo, Ecuador, was obtained by hydrodistillation. Photoprotective activity was analyzed using the in vitro methods of Mansur and Volgeman, with an SPF sunscreen serving as the positive control. The results showed that the SPF values obtained for the M. mollis essential oils were lower than those of the positive control (SPF = 24). According to the COLIPA nomenclature in the Mansur method, the essential oil from the flowers (SPF = 6.581) and the essential oil from the leaves (SPF = 2.667) have a low SPF; similarly, in the Volgeman method, the essential oil from the flowers (SPF = 6.78) and the essential oil from the leaves (SPF = 2.1) also have low SPF values. Although the FPS values obtained were low, these results do not necessarily rule out the photoprotective potential of M. mollis and establish a scientific basis for future studies of non-volatile extracts and fractions enriched in phenolic compounds from M. mollis.

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