Subcritical Water Extraction of Lycopene from Tomato Waste

Ling-li ZHU, Quan-de LIU, Yong LI, Shi-rong TANG


Subcritical water extraction (SWE) of lycopene from tomato waste and antioxidant activities was studied with response surface design. The optimal extracting conditions were identified as follows: 10g tomato waste sample with 73.8 ml double-distilled water, extraction temperature 192.01°C, and extraction time 15.80 min. The average extraction yield of lycopene amounted to 282.36 μg/g, whereas the extraction yield with Ultrasound microwave assisted extraction (UMAE) for three times was 207.63 μg/g. The DPPH free radical scavenging activity of lycopene was better than that of BHT. All these results indicate that SWE could be a more attractive eco-friendly alternative extract method with a good efficiency in the future.


Lycopene, Subcritical water extraction, Ultrasound microwave assisted extraction.


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