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Ethosome-based delivery of betanin and curcumin for improved anti-inflammatory efficacy

S. Kanthale,V. Bharad,P. Kendre,A. Tale,S. Borikar,Shirish Jain

Published 2025 in Journal of drug targeting (Print)

ABSTRACT

Abstract Natural phytoconstituents such as betanin and curcumin have attracted interest for their significant antioxidant and anti-inflammatory properties. Their therapeutic efficacy is notably constrained by inadequate bioavailability and reduced skin permeability. The current study developed an ethosome-based gel system for the delivery of betanin and curcumin, with the objective of improving transdermal penetration and providing sustained anti-inflammatory effects. Ethosomes were formulated by cold method and optimised for physicochemical characteristics including particle size, zeta potential and entrapment efficiency. The optimised formulation exhibited a mean particle size of 202.8 nm, a zeta potential of −56.4 mV and high entrapment efficiencies of 80% for betanin and 85% for curcumin. The characterisation using SEM and FT-IR confirmed the successful encapsulation and structural integrity of the ethosomes. The ethosomal gel demonstrated an optimal pH of 6.5, pseudoplastic viscosity and superior spreadability, making it appropriate for topical use. In vitro diffusion studies demonstrated a sustained release profile lasting 8 h. Skin irritation tests confirmed its biocompatibility. The in vivo anti-inflammatory efficacy was assessed in rats by utilising carrageenan model of inflammation, results showed that ethosomal gel significantly attenuated inflammation in animals. These findings indicate that the ethosome preparation represents a promising approach for enhancing anti-inflammatory efficacy.

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