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Simultaneous extraction of carotenoids and transfructosylating enzyme from Xanthophyllomyces dendrorhous by a bead
1Department of Food Science and Biotechnology, National Chung Hsing University, 250 Kuokuang Road, Taichung city, Taiwan, 40227, People's Republic of China.
Purpose Of Work:
Conditions for the cell disruption of Xanthophyllomyces dendrorhous by using a bead beater have been optimized with respect to maximizing the recovery of carotenoids and transfructosylating enzymes in a one-step process. The optimal conditions for a one-step extraction of carotenoids and transfructosylating enzymes from Xanthophyllomyces dendrorhous were: 30 g dry cells/l being disintegrated with 0.5 mm diam. glass beads at 10°C for 15 min using a bead beater. More than 90% yeast disruption and, when extracted with hexane/ethyl acetate, 28.6 mg carotenoids/l in the organic solvent phase and 440 U transfructosylating enzyme activity/mg protein in the water phase were obtained.
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