Development and stability of intimate soap formulations using Sapindus saponaria L. extract as a natural surfactant

Autor: J. C. S. Cavaletti, W. L. M. Prando, E. B. Ribeiro, D. M. de S. Valladão
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Brazilian Journal of Biology, Vol 83 (2023)
Druh dokumentu: article
ISSN: 1678-4375
1519-6984
DOI: 10.1590/1519-6984.276940
Popis: Abstract The use of synthetic surfactants reflects the high demand in the hygiene and cleaning sector for products with low-cost and good-effectiveness. These ingredients are the main components of intimate soap formulations. Sapindus saponaria L. is a plant rich in saponins, with the potential to be used as a natural surfactant due to its amphiphilic character and its foam-forming properties. Therefore, this study aimed to develop intimate soap formulations using S. saponaria extract as a natural surfactant and analyze its stability and surfactant characteristics. Preliminary and accelerated stability parameters, rheological characteristics, surface tension, foaming power, foam stability and emulsification potential were evaluated. The formulations were stable at a pH suitable for the intimate region (4.0 to 4.5), the presence of S. saponaria extract provided greater reduction of surface tension, better foaming and foam stability and greater emulsification power, desirable characteristics for an intimate liquid soap. These results demonstrate that the incorporation of S. saponaria extract into liquid soap formulations is an excellent option as a natural surfactant to reduce the use of synthetic anionic surfactants such as SLES.
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