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Engineering of tomato for the sustainable production of ketocarotenoids and its evaluation in aquaculture feed

  1. Paul D. Frasera,1
  1. aSchool of Biological Sciences, Royal Holloway University of London, Egham, Surrey TW20 0EX, United Kingdom;
  2. bFraunhofer Chile Research, Las Condes, Santiago 7550296, Chile;
  3. cPlant Sciences, Rothamsted Research, Harpenden AL5 2JQ, United Kingdom;
  4. dBiosynthesis Group, Molecular Biosciences, Goethe University Frankfurt, 60323 Frankfurt, Germany
  1. Edited by Natasha V. Raikhel, Center for Plant Cell Biology, Riverside, CA, and approved August 31, 2017 (received for review May 19, 2017)

  1. Fig. 2.

    Chromatographic profiles of ZWRI tomato carotenoids and phoenicoxanthin chirality. The chromatographic carotenoids profile was obtained by UPLC and recorded at 470 nm. The Inset shows that the chiral carbon of the ZWRI phoenicoxanthin has an S configuration.

  2. Fig. 3.

    ZWRI tomatoes color trout fillets. (A) Photographs of the trout fed with the basic, commercial, control tomato, ZWRI tomato, and ZWRI extract feeds, taken at the end of the fresh and brackish water trials (50 and 80 d, respectively). (B) Chromatographic profiles of carotenoids in the feed and fillet corresponding to the commercial and ZWRI tomato treatments. 1, astaxanthin; 1#, unknown ketocarotenoid-1; 2, phoenicoxanthin; 3, canthaxanthin; 4, 3′-OH-echinenone; 5, 3-OH-echinenone; 6, echinenone; 7, phoenicoxanthin-C14:0; 8, adonixanthin-C14:1; 9, phoenicoxanthin-C16:0; 10, adonixanthin-C16:1; 11, β-carotene.

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