2.6. Aqueous protein determination
To determine protein in the aqueous phase, SB samples were firstly centrifuged at 10,000 g for 30 min. Insoluble protein debriswere separated and the supernatant was again centrifuged at
10,000g for 60 min to assure the total separation of tiny oil droplets
and protein aggregates. After second step of centrifugation, appropriate
dilutions of supernatants were made and protein concentrationwas
determined using the modified Lowry method reported by
Markwell, Haas, Bieber, and Tolbert (1978). Bovine serum albumin
was used as standard. Assays were carried out in triplicate.