PLF was mixed with LCM in different percentages (v:v) according
to the trial plan: phase I (0% PLF + 100% LCM), phase II (25%
PLF + 75% LCM), phase III (75% PLF + 25% LCM), phase IV (100%
PLF + 0% LCM). In phase IV, as only PLF was used which is acidic
it was necessary to correct pH to a value around 7.0 with NaOH
(25%).