The cis-lycopene isomers composition in supercritical CO2 extracted tomato by-products. (November 2017)

• Record Type: Journal Article
• Authors: Urbonaviciene, Dalia; Viskelis, Pranas
• Is Part Of: Lebensmittel-Wissenschaft + Technologie =. Volume 85(2017)Part B
• Page Start: 517
• Page End: 523
• Publication Date: 2017-11
• Subjects: Lycopene -- Cis-isomers -- Supercritical carbone dioxide -- Response surface methodology; All-trans-lycopene (PubChem CID: 446925) -- 5-cis-lycopene (PubChem CID: 11756979) -- 7-cis-lycopene (PubChem CID: 101118616) -- 9-cis-lycopene (PubChem CID: 6440364) -- 13-cis-lycopene (PubChem CID: 6440310) -- Linoleic fatty acid (PubChem CID: 3931) -- Oleic fatty acid (PubChem CID: 6441289) -- Palmitic fatty acid (PubChem CID: 985) -- Stearic fatty acid (PubChem CID: 5281); Food industry and trade -- Periodicals; Food -- Composition -- Periodicals; Microbiology -- Periodicals; Nutrition -- Periodicals; 664.005
• DOI: 10.1016/j.lwt.2017.03.034
• Languages: English
• ISSNs: 0023-6438

Abstract

Abstract: 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 °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 °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 (∼62% of total lycopene). Highlights: Tomato by-products oleoresin was extracted using supercritical CO2 . Optimal conditions for cis -lycopene isomers extraction was determined. Full factorial design was used to understand the effect of process variables. The optimum conditions were 52 °C, 55 MPa and 180 min.