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Enzyme-Assisted Production of Tomato Seed Oil Enriched with Lycopene from Tomato Pomace

Zuorro, Antonio, Lavecchia, Roberto, Medici, Franco, Piga, Luigi
Food and bioprocess technology 2013 v.6 no.12 pp. 3499-3509
enzymes, fruit peels, lycopene, nutrients, processing technology, seed oils, seeds, tomato pomace, tomatoes, wastes
Large amounts of a waste known as tomato pomace and consisting mainly of the fruit peel and seeds are generated annually from the industrial processing of tomatoes. This material is rich in lycopene, a phytochemical with antioxidant and chemopreventive properties, and contains many valuable nutrients. In this study, we have investigated the possibility of using the whole waste to produce a lycopene-enriched seed oil. The oil was obtained by cold-pressing the seeds and was subsequently enriched in lycopene (up to 500 ppm) by incorporation of a tomato oleoresin derived from the peels. To increase lycopene recovery, the peels were pretreated with cell-wall-degrading enzymes and solvent extracted. This procedure allowed the production of about 25 kg/ton oleoresin with an average lycopene content of 6.8 wt.%. The compositional characteristics of the oil combined with the production of significant amounts of oleoresin strongly support the use of tomato pomace for producing lycopene-based functional products. ©Springer Science+Business Media New York 2012.