2.4 Turbidity measurements
Turbidity was calculated after measuring the transmittance
at 500 nm with UV VIS spectrophotometer (Lambda 25,
Perkin Elmer Instruments, USA) as a function of silk
fibroin concentration given by the Equation:
s = (ln T)/c
where s is the turbidity, T is the transmittance at 500 nm
and c is the cell length.