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10.1016/j.biteb.2024.101787Optimization conditions of UV-C radiation combined with ultrasound-assisted extraction of cherry tomato (Lycopersicon esculentum) lycopene extract
Department of Chemical Engineering and Food Engineering (EQA), Federal University of Santa Catarina, SC Cidade Universit´aria Brazil
Department of Food Engineering, Institute of Engineering, University of Algarve , Faro , Portugal
Department of Chemical Engineering and Food Engineering (EQA), Federal University of Santa Catarina Brazil
Department of Food Engineering, Institute of Engineerin, University of Algarve , Faro , Portugal
Department of Chemical Engineering and Food Engineering (EQA), Federal University of Santa Catarina Brazil
Department of Chemical Engineering and Food Engineering (EQA), Federal University of Santa Catarina Brazil
Department of Food Engineering, Institute of Engineerin, University of Algarve , Faro , Portugal
MeditBio-Centre for Mediterranean Bioresources and Food, Faculty of Sciences and Technology, University of Algarve , Faro , Portugal
Abstract
The aim of this work was to study the effect of UV-C radiation on ultrasound assisted extraction (UAE) of cherry tomato bioactive compounds. Cherry tomatoes were exposed to two UV-C radiation doses (0.5 and 1.0 J cm−2 ) and stored at 20 ± 0.5 oC for 7 days. Next, they were lyophilized, and the bioactive compounds were extracted by UAE at 20 KHz. To evaluate the effectiveness of the extraction process of the bioactive compounds, a CCRD (central composite rotational design) was used together with RSM (response surface methodology), for extraction times from 4 to 12 minutes and concentrations (g of lyophilized product / L of ethanol) of 1:10, 1:20 and 1:30. The extracts obtained from the irradiated tomatoes presented 5.8 times more lycopene content than the controls and higher antioxidant activity was obtained for 4 and 8 min, in the concentrations 1:10 and 1:20 (m v −1 ). Through numerical model optimization, optimal extraction conditions were obtained. The results demonstrated that by previously irradiating tomatoes with UV-C light, the UAE yielded considerably higher amounts of lycopene and other bioactives.
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