Author(s): Pereira, Maria João ; Santos, Diana ; Cruz, Agostinho ; Jesus, Ângelo ; Martins, João P. ; Moreira, Fernando ; Santos, Marlene ; Pinho, Cláudia ; Oliveira, Ana Isabel ; Cruz, Agostinho ; Santos, Diana ; Pereira, Maria João ; Pinho, Cláudia
Date: 2025
Persistent ID: http://hdl.handle.net/10400.22/31023
Origin: Repositório Científico do Instituto Politécnico do Porto
Subject(s): Craft beer; Antioxidant; Photoprotection; keratinocytes; Metabolic activity
Craft beer has gained popularity due to its unique sensory characteristics and complex matrix with nutritional and potential health benefits. Studies linking beer consumption to skin conditions are limited, however, the high content of bioactive compounds is related to biological activities such as antibacterial, anti-inflammatory, anti-oxidative, and anti-carcinogenic. This study aims to evaluate the antioxidant, photoprotective and metabolic activity in human keratinocytes (HaCaT). Eighteen craft and four industrial beers were analyzed after dealcoholizing, degassing and freeze-drying. Total phenolic content (TPC) and antioxidant activity were determined. The most promising craft beer was studied for its photoprotective and metabolic activity. An India Pale Ale beer (ALM-IPA) presented the second best TPC (8.96 ± 0.64 mg of GAE/g) and promising antioxidant activity by ABTS (IC50 = 55.21 ± 4.68 µg/mL), H2O2 (IC50 = 23.54 ± 1.53 µg/mL) and FRAP (53.74 ± 1.27 µmol TE/g) assays. Regarding photoprotective activity, a solar photoprotection factor of 48.85 ± 0.39 was obtained. ALM-IPA showed no cytotoxicity up to a concentration of 250 µg/mL after 24 and 48 h of incubation. The potential benefits of beer extracts on skin can be seen, but further studies are essential to corroborate the findings and guarantee the safety of the extracts.
