Abstract
Objective: This study aimed to formulate a transethosome cream (TEC) to increase skin penetration of epigallocatechin gallate (EGCG) in green tealeaf extract and evaluate their physicochemical characteristics and skin penetration capacity.Methods: Transethosomes were prepared through thin-layer hydration method in three formulations (F1−F3) with different Span 80 and ethanol concentrations.Transethosome morphology was characterized using transmission electron microscopy, particle size, polydispersity (PDI), and zeta potential using a particlesize analyzer and entrapment efficiency (EE). Penetration was tested using an in vitro Franz diffusion cell with female Sprague-Dawley rat skin as themembrane.Results: Transethosome F2 containing green tea extract equivalent to 3% EGCG, 4% Lipoid P30, 0.75% Span 80, and 30% ethanol had the bestcharacteristic including spherical shape, smallest particle size (35.35 nm), 0.319 PDI, zeta potential of −29.97±3.05 mV, and highest EE of45.26%±8.15%. TEC permitted greater flux than non-TEC (first phase: 60.56±4.52 vs. 25.69±0.83 μg•cm−2•h−1 and second phase: 23.13±1.38 vs.7.36±1.59 μg•cm−2•h−1).Conclusion: Transethosome can increase the skin penetration of green tea leaf extract.
Highlights
Green tea from the tea plant Camellia sinensis has several health benefits [1]
A delivery system that can facilitate the skin absorption of Epigallocatechin gallate (EGCG) is desirable, and a formulation using transethosomes could be among the best such vehicles for EGCG-based treatment
Green tea contains phenolic compounds that act as powerful chain-breaking antioxidants, which might directly contribute to antioxidant activity
Summary
Transethosomes were prepared through thin-layer hydration method in three formulations (F1−F3) with different Span 80 and ethanol concentrations. Penetration was tested using an in vitro Franz diffusion cell with female Sprague-Dawley rat skin as the membrane
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