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Table 1 Summary of results from collagenase, elastase, and antioxidant capacity (TEAC) (N = 6, ± SEM).

From: Antioxidant and potential anti-inflammatory activity of extracts and formulations of white tea, rose, and witch hazel on primary human dermal fibroblast cells

Extract Concentration added % inhibition of elastase % inhibition of collagenase Trolox equivalent
(μmoles)
WTEG 1% 10.57 ± 0.45 10.96 ± 4.82 5.78 ± 0.55
WHD 10% 41.00 ± 2.38 No activity No activity
WT 25 μg 89.00 ± 3.62 87.08 ± 4.79 10.62* ± 0.69
RT 25 μg 22.08 ± 0.64 40.96 ± 3.9 9.91** ± 0.85
WH 25 μg 2.8 ± 0.77 13.70 ± 3.26 13.15** ± 0.48
  1. * denotes extracts diluted to 1 μg and ** 6.25 μg: from ref [9]