• Is Ultrasound-assisted extraction a promising method for oil extraction from microorganisms?
  • The authors concluded that ultrasound-assisted extraction represents a promising method for oil extraction from microorganisms. In another study, different cell disruption technologies were tested for oil recovery from the oleaginous yeast Y. lipolytica [ 57].
  • Which ultrasonic power should be used for oil extraction?
  • For example, for ultrasound-assisted extraction of lipids from fresh Nannochloropsis oculata cells, ultrasonic power of 300, 450, 650, 850, and 1000 W was used to estimate the optimum conditions for oil extraction through response surface methodology (RSM).
  • How does ultrasonic extraction affect carbohydrate extraction from Chlorella sp?
  • Similarly, the effects of four parameters including ultrasonic power, extraction time, flow rate and algal cell concentration, on carbohydrate extraction from Chlorella sp. were investigated, and the glucose yield under optimal ultrasonic conditions was much higher (3-folds) compared to conventional solvent extraction .
  • How can Ultrasonic processing improve microalgae production?
  • The integration of cell harvesting and ultrasonic disruption, or ultrasonic assisted extraction and separation can further reduce energy consumption, and make ultrasonic processing of microalgae more viable.
  • Does ultrasonic extraction destroy microalgae cells?
  • The specific surface area of microalgae cells increased from 3.831 to 11.923 m 2 /g after ultrasonic extraction, suggesting cell wall destruction and fragmentation .
  • Can ultrasonic pretreatment be used to extract microalgal cells?
  • In most studies regarding ultrasound assisted extraction of target products from microalgal cells, the ultrasonic pretreatment was jointly used with different solvent systems, which generally resulted in better product yields comparing to those using ultrasound (solvent-free) or solvent extraction alone .