Porphyridum Cruentum as a natural colorant in chewing gum

Abstract In this study, usage possibility of the dried Porphyridium cruentum type microalga biomass in the chewing gum formulation as a natural colorant was investigated. For this aim, the effect of different spray dryer inlet temperatures (150-200 °C) on pigment (total carotenoid and chlorophyll-a) quantities and color properties ( L*, a*, b* and C*) of Porphyridium cruentum type microalga biomass were examined. P. cruentum were cultured using the tubular photobioreactor and harvested by centrifugation. The dried microalga was then added to chewing gum at different concentrations (0.5% and 1.0% w:w) as a natural red colorant. The amount of the total carotenoids in dried biomass ranged from 112.6 to 419.9 μg g -1 and chlorophyll-a from 511 to 1513 μg g-1. Considering sensorial analysis, algal taste increased with increasing microalga concentration ( p