B. Cordero, D. Voltolina-1997
Aq. Eng., 16: 205-211
Abstract:
The microalgae Chaetoceros sp. and Phaeodactylum tricornutum were grown in semicontinuous 15 l cultures, a volume commonly used for mid-scale inocula in aquacultural practices. The daily yields were concentrated and stored by freezing and freeze-drying for up to 1 month. After slow or fast freezing without the protective agents glycerol or Me2SO, neither of the microalgae was capable of active growth, while with the cryoprotectants slow freezing gave good results after 7 days of storage at -20 C. After 15 and 30 days, however, microalgae growth was poor, probably due to bacterial contamination. Freeze-drying gave even worse results, which we attribute to severe losses of storage products after this treatment.
(Centre de Investigacion Cientifica y de Education Superior de Ensenada (CICESE), Departamento de Acuicultura, Ave. Espinoza 843, Apartado Postal 2732, Ensenada, Baja California, Mexico)