Atividade antioxidante e fotoprotetora de bambus nativos do Sudeste brasileiro

In vivo SPF from multifunctional sunscreen systems developed with natural compounds—A review

“…52 Generally, in the literature summarized in this study, in vivo SPF values were the highest when a natural compound was included into the sunscreen system. 12,49 After a rigorous search in specialized journals regarding in vivo SPF values, we found the studies described in lower than the commercial product used as control. L sericea extract has achieved significant performance as sunscreen, considering that this extract was the only anti-UVB active used, which suggests further investigation to obtain higher values of SPF.…”

“…In fact, our Research Group has been investigating these systems for over a decade to achieve safer and more effective and innovative bioactive multifunctional sunscreens. 12,50,51 Moreover, the incorporation of these actives could reduce the proportion of traditional UV filters in the final product, while providing other functional characteristics to formulations, since UV filters do not tend to offer more cosmetic attributes. 52 Generally, in the literature summarized in this study, in vivo SPF values were the highest when a natural compound was included into the sunscreen system.…”

“…We highlight ferulic, caffeic, and p-coumaric acids and their acidic derivatives (eg, rosmarinic and chlorogenic acids) since they can absorb in the UVB range. 7,11,12 Furthermore, flavonoids, which are polyphenols with two aromatic rings (two chromophores), absorb in the region of 240-285 and 300-550 nm. Thus, their incorporation into sunscreens works as a strategy to achieve broad-spectrum protection.…”

“…0% extract of Merostachys pluriflora bamboo culms associated with 3.0% BMDBM, 7.5% EHMC, and 8.0% EHDP increased by 65% in vivo SPF values compared with formulations without the extract. These results suggested that this plant could be considered a source of natural photoprotective compounds with potential to be used in sunscreens, diminishing the addition of synthetic UV filters 12. Ethanolic (1.0%) and aqueous extracts (1.0%) of Bauhinia microstachya were associated with UV filters, such as BP (5.0%), EHMC(5.0%) and octocrylene (5.0%).…”

“…9 It is also well established that the association of these two types of UV filters enhances the efficacy of formulations and therefore such association has been the focus of several studies. [10][11][12] The efficacy of sunscreens against UVB radiation is measured through sun protection factor (SPF). Several in vitro methods have been proposed and described to evaluate SPF, as well as UVA/UVB ratio, protection against UVA, and also to determine broad-spectrum protection.…”