Materials
Lipase Novozyme 435, Lipozyme 435, Lipozyme TLIM, Lipozyme RMIM, donated
by Aarhus University, Denmark. Chemical reagents, including glycerol,
caffeic acid (CA), ferulic acid (FA), p -hydroxycinnamic acid
(p -HCA), ethyl acetate, chloroform, methanol, toluene, glacial
acetic acid, anhydrous ethanol and DPPH were purchased from Aladdin
reagent (Shanghai, China). All solvents for HPLC analysis were purchased
from Sigma-Aldrich.