Antioxidant cosmetotextiles: Cotton coating with nanoparticles containing vitamin E

Abstract

A B S T R A C TIn the present study, we coated cotton fabrics with protein-based nanoparticles containing vitamin E (αtocopherol) by the pad-cure method. Scanning electron microscopy, Fourier transform infra-red spectroscopy, and air permeability analysis of coated samples confirmed the fixation of the nanoparticles onto the fabric's surface. The antioxidant activity of the coated fabrics was evaluated by 2,2′-Azino-bis(3-ethylbenzothiazoline-6sulfonic acid) (ABTS) free radicals reduction. Samples coated with nanoparticles containing the highest amount of encapsulated vitamin E (20% of the oil phase) showed the highest antioxidant activity. The protein-based coating was maintained for at least 10 washing cycles, demonstrating the reliability of the pad-cure method for the fixation of nanoparticles onto cotton surfaces. A methodology for nanoparticles release from the coated surfaces and their transfer to other substrates was demonstrated by the simple crock meter rubbing in the presence of sweat and protease. A high amount of material can be transferred and released to other substrates, such as textiles and skin, through the synergistic effect of sweat/protease and abrasion. An array of cosmetic and medical applications are possible with the developed coating and release methodology in which vitamin E would impart vital benefits as skin protection, anti-ageing product, or skin moisturizer.

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“…). In this case, there is the release of the active compound followed by a plateau, indicating that the total liberation was reached [48], in the experiment, the equilibrium was reached in 600 min, as noted in Fig. 7.…”

“…The liberation of active substances depends on many factors, such as the diffusion of the substance through the matrix, the degradation of the complexes, the morphology, concentration and distribution of the oil and, finally, the hydrophilicity of the textile material [48,55,56]; therefore, the liberation profile is a sum of all these effects.…”

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“…The antioxidant effects of vitamin E encapsulated in BSA nanoparticles in cotton have already been studied [70]. The nanoparticles, produced by ultrasonic emulsification, have a size between 200 and 300 nm and have the capacity to encapsulate 99% of the vitamin.…”

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