1. TOTAL PHENOLS, ANTIOXIDANT ACTIVITY AND YIELD, IN TOMATOES AND PEPPERS IN A CLOSED GREENHOUSE AND COMPARISON WITH A CONVENTIONAL GREENHOUSE. Authors: DIMITRIOS KALFOUNTZOS, ANASTASIA KARABOULA, LIVIU GIURGIULESCU, IOANNIS VAGELAS, ALEXANDROS PAPACHATZIS, NIKOLAOS GOUGOULIAS.