3. Results and discussion
3.1. Centrifugation conditions and freezing curves
The speed centrifugation was set at 4600 rpm, according to the
results obtained in our laboratory (Petzold & Aguilera, 2013). Centrifugation
time was determined from initial trials with blueberry juice
(first cycle of cryoconcentration). From Fig. 3a it can be seen that