Iskanje po katalogu digitalne knjižnice

Opis: The growing concern about the environmental impact and human health risk related to the excessive use of synthetic ingredients in cosmetics and topical formulations calls for the exploration of safe and sustainable natural alternatives. Kraft lignin is a polyphenolic compound generated as a by-product from the kraft pulping process in large quantities annually worldwide. In addition to its commercial availability, its structural features and diverse functional properties make it worth to be considered as a bio‐active ingredient for cosmetic and personal care products. The intrinsic limitations of its native form for the development of high-performance products can be overcome by morphology control through particle size reduction to nanoscale. Therefore, in this research lignin nanoparticles were evaluated for the stabilization of Pickering emulsions. First, a screening of conditions and ingredients was carried out to assess the most suitable parameters for the synthesis of emulsions. The synthesis of final Pickering emulsions was performed using a rotor-stator homogenizer followed by ultrasound. The quality of emulsions stabilized with LNPs were assessed in relation to the emulsification process parameters and ingredients used in the formulation. In generenal, higher concentration of LNPs and volume of oil favoured the emulsion stability. Sun protection factor test showed promising values for application of LNPs in the sunscreen field. We compared the SPF of emulsions prepared with orange, coconut, and paraffin oil. The results showed that emulsion with orange oil had the highest SPF at 16.5, with coconut oil it was 8.8, and the lowest for emulsion with paraffin oil which was 1.7.
Ključne besede: lignin, LNPs, oils, Pickering emulsions
Objavljeno v DKUM: 05.09.2022; Ogledov: 941; Prenosov: 0
Celotno besedilo (6,36 MB)