1. Hounsome N, Hounsome B, Tomos D, Edwards-Jones G: Plant metabolites and nutritional quality of vegetables. J Food Sci. 2008 May;73(4):R48-65. doi: 10.1111/j.1750-3841.2008.00716.x. [PubMed:18460139]
  2. Maiani G, Caston MJ, Catasta G, Toti E, Cambrodon IG, Bysted A, Granado-Lorencio F, Olmedilla-Alonso B, Knuthsen P, Valoti M, Bohm V, Mayer-Miebach E, Behsnilian D, Schlemmer U: Carotenoids: actual knowledge on food sources, intakes, stability and bioavailability and their protective role in humans. Mol Nutr Food Res. 2009 Sep;53 Suppl 2:S194-218. doi: 10.1002/mnfr.200800053. [PubMed:19035552]