期刊
LWT-FOOD SCIENCE AND TECHNOLOGY
卷 85, 期 -, 页码 517-523出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.lwt.2017.03.034
关键词
Lycopene; Cis-isomers; Supercritical carbone dioxide; Response surface methodology
资金
- Research Council of Lithuania [MIP-62/2015]
The use of concentrated carotenoid extracts from red-ripe tomato by-products in traditional foods can improve the functional properties of the product while increasing the efficiency of industrial red-ripe tomatoes processing. In red tomatoes, lycopene is almost exclusively found in the all-trans-form, but during processing lycopene can undergo isomerisation to cis-lycopene isomers. The cis-lycopene isomers offer potentially better health benefits than the trans-lycopene isomers. The objectives of this study were to optimize supercritical carbon dioxide (SC-CO2) extraction parameters for the isolation of the non-polar tomato by-product fraction (oleoresin) and cis-lycopene isomers by using a central composite rotatable design (CCD) model with response surface methodology (RSM). SC-CO2 using CCD and RSM was used for the first time for the isolation of cis-lycopene isomers from tomato by-products. The best results in terms of oleoresin yield were obtained at a temperature of 73.9 degrees C, a pressure of 53.7 MPa and a time of 155 min, whereas the optimal extraction process parameters of cis-lycopene isomers are a 52 degrees C temperature, a 55 MPa pressure and a 180 min extraction time. The optimized conditions of SC-CO2 allows to obtain high yields of lycopene rich extracts (oleoresins) comprising higher percentage of cis-lycopene isomers (similar to 62% of total lycopene). (C) 2017 Elsevier Ltd. All rights reserved.
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