The invention discloses a treatment method for crushing microalgae with ultrasonic
waves. The method comprises the following steps of mixing a concentrated
algae solution enriched with microalgae witha PBS buffered solution to obtain a
mixed solution, placing the
mixed solution in an ultrasonic generation instrument, and performing treatment for 20-40min, so as to microalgae of which the length is 2-30 [mu]m, wherein the shape of the microalgae is any one of an aggregation group,
protonema and rectangular strips. The method disclosed by the invention overcomes the technical defect that a conventional physical
mechanical crushing method generates uneven and too big
cutting force, so that the integrity of the
cell body of the microalgae is damaged. According to the method, the
cell wall ofthe microalgae is not destroyed, microalgae cenobium in the shape of the aggregation group,
protonema and rectangular strips is subjected to intercellular breaking and separation, so that
cell massesin rows, groups or clusters are broken to obtain cell rows or cell groups being shorter in length, even the cell masses are broken into single
algae cells, and
algae intra-cellular
nutrient componentsare effectively reserved. The microalgae breaking solution obtained by the method can meet
nutrient requirements of aquatic animals for
ingestion cabibre at the
seedling raising early stage.