期刊
BIORESOURCE TECHNOLOGY
卷 224, 期 -, 页码 670-679出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.11.071
关键词
Bead milling; Bead size; Microalgae; Energy; Stress parameters; Protein release
资金
- IPOP Biorefinery from Wageningen University and Research Centre (The Netherlands)
- STW AlgaePro4U [12635]
The disintegration of three industry relevant algae (Chlorella vulgaris, Neochloris oleoabundans and Tetraselmis suecica) was studied in a lab scale bead mill at different bead sizes (0.3-1 mm). Cell disintegration, proteins and carbohydrates released into the water phase followed a first order kinetics. The process is selective towards proteins over carbohydrates during early stages of milling. In general, smaller beads led to higher kinetic rates, with a minimum specific energy consumption of <= 0.47 kWh kg(DW)(1) for 0.3 mm beads. After analysis of the stress parameters (stress number and stress intensity), it appears that optimal disintegration and energy usage for all strains occurs in the 0.3-0.4 mm range. During the course of bead milling, the native structure of the marker protein Rubisco was retained, confirming the mildness of the disruption process. (C) 2016 The Authors. Published by Elsevier Ltd.
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