The pH was controlled at 4.8 for optimal
enzyme activity by adding 250
μ
L of sodium citrate buffer (50 mM). A
balance of DI water was added to each test tube to bring up the working
volume to 5 mL. In these mixtures, the final algal cell concentration was
10g/L withanenzyme loading of 6%(g/g, equivalentto 0.1gEP/gBDW).
BDW). The polymer loading was 0.2 g/g BDW and the treatment time
was 6 h unless specified otherwise. All test tubes were incubated in a
shaking incubator (New Brunswick Scienti
fi
c Excella E24, Eppendorf,
NY, USA) at 30 °C and 120 rpm shaking speed. After 6 h, a 200-
μ
Laliquot
was withdrawn from each treatment for cell disruption and reducing
sugar measurements and imaging with light microscopy and scan elec-
tronic microscopy (SEM). The remaining mixture underwent lipid ex-
traction to determine lipid yield upon cell disruption
The pH was controlled at 4.8 for optimalenzyme activity by adding 250μL of sodium citrate buffer (50 mM). Abalance of DI water was added to each test tube to bring up the workingvolume to 5 mL. In these mixtures, the final algal cell concentration was10g/L withanenzyme loading of 6%(g/g, equivalentto 0.1gEP/gBDW).BDW). The polymer loading was 0.2 g/g BDW and the treatment timewas 6 h unless specified otherwise. All test tubes were incubated in ashaking incubator (New Brunswick Scientific Excella E24, Eppendorf,NY, USA) at 30 °C and 120 rpm shaking speed. After 6 h, a 200-μLaliquotwas withdrawn from each treatment for cell disruption and reducingsugar measurements and imaging with light microscopy and scan elec-tronic microscopy (SEM). The remaining mixture underwent lipid ex-traction to determine lipid yield upon cell disruption
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