Stability and sensory assessment of emulsions containing propolis extract and/or tocopheryl acetate

Abstract

The prevention of skin aging has been one of the main aims of cosmetic products. Propolis and tocopheryl acetate can be promising substances because of their antioxidant properties. In this study, propolis extract was obtained and associated with tocopheryl acetate in a cream formulation, which then underwent stability and sensory assessment. The formulation containing propolis extract and tocopheryl acetate proved to be stable in the preliminary stability study, demonstrating gradual darkening and slight pH decrease when subjected to 60 o C for 28 days, but showing stability on rheological study. In the sensory analysis, the formulation containing these two components was preferred by the product testers over the base cream and creams containing propolis extract or tocopheryl acetate alone. In conclusion, given the stability of the formulation and the preference of the product testers for this formulation, this association proved promising for use in cosmetic formulations.Uniterms: Antioxidant/use in cosmetic formulations. Cosmetics/sensory analysis. Propolis/extract/use in cosmetics. Tocopheryl acetate/use in cosmetics.A prevenção do envelhecimento cutâneo tem sido um dos principais focos dos produtos dermocosméticos. A própolis contém substâncias com atividade antioxidante, bem como o acetato de tocoferila é conhecido por apresentar esta atividade. Porém, a própolis apresenta odor muito característico e intenso, que pode interferir no sensorial do produto. Assim, no presente trabalho, obteve-se o extrato de própolis, que foi associado ao acetato de tocoferila em uma formulação de uso tópico, que foi avaliada quanto à estabilidade e às características sensoriais. Conduziu-se um estudo de estabilidade, no qual as formulações contendo ambos os compostos apresentaram escurecimento gradual e ligeira queda no pH após 28 dias sob 60 °C, tendo sido estável no estudo reológico. Na análise sensorial, realizada com 28 provadores, a formulação contendo extrato de própolis em associação com acetato de tocoferila foi a preferida, quando comparada com o creme base e o creme contendo somente extrato de própolis ou acetato de tocoferila. Em conclusão, devido à preferência dos provadores e ao estudo de estabilidade, a associação de extrato de própolis e de acetato de tocoferila mostrou ser promissora para uso em produtos dermocosméticos.Unitermos: Antioxidantes/uso em cosméticos. Cosméticos/análise sensorial. Própolis/extrato/uso cosmético. Acetato de tocoferila/uso cosmético.

Effects of Lipids and Emulsifiers on the Physicochemical and Sensory Properties of Cosmetic Emulsions Containing Vitamin E

“…These changes led to products whose perceived oiliness outweighed the other sensory attributes, thus masking the effects of emulsifiers and oils modification on the sensory attributes of these emulsions and making difficult to correlate instrumental and sensory data. Similarly, Gonçalves et al [32] reported that the sensations of oiliness and stickiness promoted by the formulations were determinants in the answers given by the panelists. As some sensory attributes, such as oiliness, have a strong influence on hedonic response, this hedonic aspect may lead to a nonlinear relationship between a sensory attribute and other measurable parameters [33].…”

Fabrication, physicochemical characterization and preliminary efficacy evaluation of a W/O/W multiple emulsion loaded with 5% green tea extract

“…However formulation MeB samples without active ingredients showed no change in pH at all storage conditions. Since these changes were observed mainly in the formulations containing the active ingredients, this suggests that instability was due to these components, which affected the integrity of the formulation (Gonçalves et al, 2011).…”

A New Approach to Atopic Dermatitis Control with Low-Concentration Propolis-Loaded Cold Cream

“…The clinical study was mainly carried out to evaluate the influence of low concentrations of green propolis on AD control. Green propolis is usually added in creams at concentrations of 2% to 10% [54][55][56], at least 1000 times higher than in CPropolis. High concentrations of propolis leave a characteristic odor in creams that can stimulate allergic processes in AD patients [57].…”