In vitro evaluation of face mask containing extract and biomass of Spirulina platensis and its antibacterial activity

Abstract

Spirulina is a potential source of bioactive compounds and recently used in skincare products. The aim of the research was to determine characteristics and antibacterial activity of face mask containing extract and biomass of Spirulina platensis. S. platensis was cultivated indoor at 28°C, using modified media, and lighting intensity of 2500 lux. The S. platensis biomass was extracted using ethanol. The crude extracts and biomass of the Spirulina were used in the face mask formulation. The characteristic and antibacterial activity of the face mask was observed. The face mask containing extract and biomass of Spirulina had the viscosity of 7306.7±9.2 cP, pH of 6, spreadability of 1.1 mm, homogenous, green color, and semisolid. The face mask was able to inhibit Propionibacterium acnes with a diameter of inhibition zone was 10±0.4 mm. The antibacterial activity was due to the presence of alkaloids, steroids, saponins, and phenol in S. platensis extract. This research promotes the developing of marine natural products as cosmeceutical ingredient.