Fig. 2

(A) Effects of avocado peel and seed extracts on the viability of BJ cells. The cells were treated with various concentrations of avocado peel and seed extracts at 6.25–100 µg/ml for 24 h. The viability of the treated cells was determined by resazurin reduction assay. (B) Effects of avocado peel and seed extracts on the intracellular ROS level in UVB-irradiated BJ cells. The cells were treated with avocado peel and seed extracts at 6.25–50 µg/ml or Vit C for 24 h, irradiated with 40 mJ/cm² UVB, maintained in the culture medium for 30 min, and finally determined intracellular ROS levels using DCFDA assay. The results are presented as the mean ± SEM of three independent experiments. The statistical significance of differences was evaluated by one-way ANOVA followed by Tukey’s test. ^**p < 0.01 compared to the non-irradiated control; ^#p < 0.05, ^##p < 0.01 compared to the UVB-irradiated control.