Aim and Objective: Currently, the use of ingredients from natural sources has gained great attention in cosmetic
field especially for the development of new photoprotective formulations. Therefore, the present study aimed to evaluate the
cosmetic potential of the methanolic crude extract and the ethyl acetate fraction of the medicinal halophyte Tamarix gallica
(Tg) growing in the area of Tebessa in eastern of Algeria, by assessing their phenolic and flavonoid contents,
photoprotective and antioxidant activities.
Methods: The research approach consisted of determination phenolic and flavonoid contents of aerial parts via FolinCiocalteu and aluminum chloride methods respectively. The antioxidant activity was measured through two in vitro methods
DPPH radical scavenging activity and total antioxidant capacity test (TAC). The in vitro photoprotective effect was
performed according to the parameter SPF (Sun Protection Factor) by using UV spectroscopic method in UV-B region
Results: The methanolic extract (Tg-MeOH) and ethyl acetate (Tg-EtOAc) fraction showed good antioxidant activity with
IC50’s 14,05±0,66, 27,58±1,98 µg/mL respectively in DPPH test. Furthermore, both extracts displayed strong total
antioxidant capacity (287.01±7.85, 246.7±1.12 mg AAE/g, respectively) in TAC test. Both extracts exhibited high
photoprotective activity, with sun protection factor (SPF) values 37.03±0.22 and 36.08±0.03. The antioxidant and
photoprotective activities of these extracts is probably related to polyphenols content (190.27±0.74 mg AGE /g and
121.77±1.29 mg AGE /g, respectively) , and flavonoids (78.75±0.06 mg QE /g and 58.67±1.19mg/g).
Conclusion: Our finding show that extracts of Tamarix gallica L could be a promising source to be mixed as natural
sunscreens and antioxidants agent into photoprotective cosmetic formulations.