Liudmila Yarovaya and Watcharee Khunkitti

DOI: 10.14456/sjst-psu.2019.71

pp. 708 - 715

Abstract

Grape seed extract (GSE) contains a high content of polyphenols that prevent the generation of reactive oxygen species
which suggests an anti-aging action. The aims of this study were to investigate the antioxidant effects of GSE, ultraviolet (UV)
and visible spectrums, and in vitro sunscreen efficacy. The results showed that GSE possessed DPPH free radical scavenging
capacity at an IC₅₀ of 33.17±1.87 μg/mL and ferric reducing power of 1 mg/mL. GSE was equivalent to 4.17±0.23 mM vitamin C
and 0.73±0.04 mM Trolox. Moreover, 3% and 5% w/w GSE absorbed broad UV and blue light spectra to a sufficient extent. The
sun protection factor (SPF) and persistent pigment darkening (PPD) increased to 5 units and 1 unit, respectively, after addition of
3% GSE to an over-the-counter brand product. In conclusion, GSE possessed antioxidant activity and boosted the SPF/PPD value
of sunscreen product. Therefore, GSE can be a value-added component to sunscreen products.

Keywords

• grape seed extract
• antioxidant
• sunscreen