Inhibitory Effect of Olive Phenolic Compounds Isolated from Olive Oil By-Product on Melanosis of Shrimps
Antonio Lama-Muñoz,
Antonio Gómez-Carretero,
Fátima Rubio-Senent,
Alejandra Bermúdez-Oria,
Inés Maya,
José G. Fernández-Bolaños,
Blanca Vioque,
Juan Fernández-Bolaños
Affiliations
Antonio Lama-Muñoz
Department of Food Phytochemistry, Instituto de la Grasa (Spanish National Research Council, CSIC), Pablo Olavide University, Building 46, Ctra de Utrera km 1, 41013 Seville, Spain
Antonio Gómez-Carretero
Department of Organic Chemistry, Faculty of Chemistry, University of Seville, Profesor García González 1, 41012 Seville, Spain
Fátima Rubio-Senent
Department of Food Phytochemistry, Instituto de la Grasa (Spanish National Research Council, CSIC), Pablo Olavide University, Building 46, Ctra de Utrera km 1, 41013 Seville, Spain
Alejandra Bermúdez-Oria
Department of Food Phytochemistry, Instituto de la Grasa (Spanish National Research Council, CSIC), Pablo Olavide University, Building 46, Ctra de Utrera km 1, 41013 Seville, Spain
Inés Maya
Department of Organic Chemistry, Faculty of Chemistry, University of Seville, Profesor García González 1, 41012 Seville, Spain
José G. Fernández-Bolaños
Department of Organic Chemistry, Faculty of Chemistry, University of Seville, Profesor García González 1, 41012 Seville, Spain
Blanca Vioque
Department of Food Phytochemistry, Instituto de la Grasa (Spanish National Research Council, CSIC), Pablo Olavide University, Building 46, Ctra de Utrera km 1, 41013 Seville, Spain
Juan Fernández-Bolaños
Department of Food Phytochemistry, Instituto de la Grasa (Spanish National Research Council, CSIC), Pablo Olavide University, Building 46, Ctra de Utrera km 1, 41013 Seville, Spain
Melanosis is an unsolved problem of the crustacean industry and the cause of great loss of value. This study investigates the effect of two potent, natural antioxidants isolated from olive waste (hydroxytyrosol, HT and 3,4-dihydroxyphenylglycol, DHPG) and three novel HT-derivatives containing selenium and sulfur (dihydroxytyrosyl diselenide, N-hydroxytyrosyl selenourea, and N-hydroxytyrosyl thiourea) on the prevention of melanosis in Atlantic ditch shrimp (Palaemonetes varians) during refrigerated storage. These results clearly demonstrate the positive inhibitory effect of DHPG and dihydroxytyrosyl diselenide on delaying melanosis in vivo, although this effect was not dose dependent. The effect was associated with a concomitant-inhibitory effect on tyrosinase activity in vitro. To our knowledge, so far no studies on the prevention of melanosis have been conducted on this small specie of shrimp which is available in large quantities at any time of the year at low cost. Studies with these promising compounds could then be extended to other more economically important species with a greater guarantee of success.
