Abstract
Using ultrasound technology for obtaining O/W lycopene emulsions needs analyzing the parameters for the enhanced application. To this end, O/W lycopene emulsions (30:70) were processed using ultrasound with powers of 240W and 360W in 5, 10, and 15min. Afterward, the poly dispersity index, droplet size, ζ-potential, turbidity, phase separation, lycopene concentration, rheological behavior, surface tension, and morphology of emulsions was investigated. The experimental results showed good emulsifying characteristics with respect to droplet size and ζ-potential. If the mean values of the droplet size were significantly reduced and the ζ-potential increased. The ultrasound application had a significant impact on emulsion stability with no phase separation and significantly high lycopene retention. Ultrasound reduced the apparent viscosity by reducing the particle size due to the energy supplied to the system. The final emulsion that was treated at 360W, and 2160J/cm3 in 10min, presented enhanced technological properties appropriate for food products.
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