The invention relates to a methodfor preparing a lipid-rich microalgal flour, which comprises the following steps:(a) providing a microalgal biomass comprising more than 50% of lipids by dry weight of biomass；(b) lyzing the microalgae,(c) concentrating the microalgal lyzate to a solids content of more than 25% by weight, preferably to a solids content of between 35% and 50% by weight,(d) applying a heat treatment to the lyzate thus concentrated,(e) homogenizing at high pressure the lyzate obtained in step (d), so as to obtain a stable emulsion,(f) drying said emulsion to obtain the microalgal flour.
