I finally manage to get the matlab output in the console.
I follow a tip given in @AndyCampbell blog by @Guy Starbuck:
start /wait matlab -nodesktop -nosplash -minimize -wait -r "disp('Hello World!');exit" -logfile unittestlog.txt
set output=%errorlevel%
MORE unittestlog.txt
EXIT %output%
thanks all for your help.