PARAMETERS AFFECTING LYCOPENE EXTRACTION FROM TOMATO POWDER AND ITS ANTIOXIDANT ACTIVITY

The extraction of lycopene from dried tomato powder was carried out using ultrasound assisted (UAE) and conventional solvent (COSE) extraction methods with varying liquid/solid ratio (10:1-50:1), extraction time (5-60 min), temperature (20-50 ° C) and ultrasonic power (150-200 W). The response surface methodology was used to optimize the extraction parameters and to determine their individual and interaction effects on the extraction yield. The maximum extraction yields of UAE (722.321 mg lycopene/kg tomato powder) and COSE (975.833 mg lycopene/kg tomato powder) was observed using the following conditions: 166 W for 26 min, and a 56:1 liquid/solid ratio, and 45 ° C for 50 min, and a 56:1 liquid/ solid ratio, respectively. At the same extraction conditions UAE is reaching the same extraction yield faster than the COSE. Even the lycopene contents of the extracts were the same, the antioxidant capacity of the UAE and COSE extracts were 12.48 and 11.08 mg Trolox/g tomato powder, respectively .