Effect of Different Plant Extracts Added to Ice on Sensory Preference of Sliced Salmon

Abstract

Salmon is usually sold in slices on ice in retail markets. Since ice is in direct contact with fish, it af-fects the sensory characteristics as well as the physicochemical properties. Improving the proper-tiesoficecanmakepositivecontributionstofishflavorandconsumerpreference.Inthisstudy,slicedsalmonsweretreatedwithicecontainingoneofeitherbasil(B),rosemary(R),laurel(L),oregano (O) or fennel (F) extracts. Iced salmon without any plant extract was the control (C) group. Displaying sliced fish for sale on ice and placing back to cold room at the end of the day is a com-mon practice. Samples were covered with ice, stored at 18±1°C during daytime and taken to the cold room (2±1°C) at night to simulate marketing conditions. Adding plant extracts to ice resulted in a remarkable change in fish flavor, and R, F, and L were the most popular treatments among all groups.Inparticular,rosemary-addedicesignificantly(P lt;0.05)increasedthepreferenceofcon-sumption.PanelistsemphasizedthatFsamplescanbeconsumedasappetizers.DominantandpleasantaromawasalsostatedforLsamples.Themesophilicaerobicbacteriacountremainedbelow 5 log CFU/g in all samples during 4 days. The total volatile basic nitrogen (TVB-N), thiobar-bituric acid reactive substances (TBARS) and pH values of all groups remained within the limits of acceptability. Using plant extract-added-ice provided a suitable quality sale of salmon for 4 days and offered an option to consumers by giving the product different flavors.

Keywords

• plant extract
• icing
• fish
• salmon
• sensory preference