ETICHETTE INTELLIGENTI PER LA RILEVAZIONE VISIVA DEL DETERIORAMENTO DEI PRODOTTI ALIMENTARI

Chemical and biochemical responses to sub−lethal doses of mercury and cadmium in gilthead seabream (Sparus aurata)

Specimens of Sparus aurata were exposed to sub-lethal concentrations of Hg and Cd for 25 days and the levels of both metals were investigated in organs and tissues. Bioaccumulation of Hg decreased as follow: gills > kidney > liver > skin > muscle, while the order of Cd bioaccumulation was: liver > kidney > gills > skin > muscle. Immediately after exposure, both metals showed the highest bioaccumulation in gills and skin indicating that these organs are reliable targets for biomonitoring studies after short term exposure. Metals introduction caused a significant time-dependent concentrations increase in kidney and liver, while in the muscle a significant in-crease of …

Species disparity response to mutagenesis of marine yeasts for the potential production of biodiesel.

Abstract Background Among the third-generation biodiesel feed stock, oleaginous marine yeasts are the least studied microorganisms for such purpose. Results Wild strains yeasts were isolated from various Tunisian marine sources including fish waste (Candida tenuis CtTun15, Debaryomyces hansenii DhTun2015, Trichosporon asahii TaTun15 and Yarrowia lipolytica YlTun15) and seawater (Rhodotorula mucilaginosa RmTun15). Following incubation with ethyl methanesulfonate (EMS: 75 mM) for various periods of time (T15, T30, T45, T60 min), the cell viability of these strains responded differentially according to yeast species. For instance, mutated CtTun15 did not survive after 30 min of EMS treatment; …

Dall’approccio ecotossicologico a quello molecolare, dai test in vitro a quelli in vivo: la sfida per l’individuazione di biomarcatori per il monitoraggio dell’ambiente marino

Il presente lavoro riporta una selezione di alcuni risultati ottenuti impiegando sistemi modello rappresentati da colture cellulari di pesce, invertebrati e vertebrati marini, adottando biomarcatori finora poco indagati in organismi di questi ambienti, allo scopo di individuare sensori dello stato metabolico, la cui variazione, a lungo termine, è noto che porti a drammatiche variazioni dell’omeostasi, del ciclo cellulare e conseguenti alterazioni. Per semplificare la valutazione comparativa tra le risposte ottenute nei vari sistemi modello, riportiamo gli effetti determinati da una classe di contaminanti su cui si è concentrato, negli ultimi anni, l’interesse della ricerca in ambito ecotoss…