Analysis of heavy metal residue in raw and smoked meat of Corbicula nurninea (Etak)

This study is about analysis of heavy metal residue in raw and smoked etak or knows as Corbicula Flurninea. Etak is one of the Asian clam in freshwater aquatic ecosystem that usually have been consume as snack in Kelantan that prepare using smoked with herb method as cooking method and this types of snack can be find in wet market and roadside in Kelantan. This study was conducted at University Malaysia Kelantan using raw and smoked etak that was collected from Jeli market used as sample for extraction with acid digestion method. The extraction for both raw and smoked etak were analyzed by Atomic Absorption Spectrometry (AAS) to determined concentration of heavy metal residue. The result of Cd concentration in raw "etak" is 0.09 µg/g dry weight and 0.10 µg/g dry weight in smoked "etak", for Cu concentration in raw "etak" is 10.05 µg/g dry weight and in smoked "etak" is 8.73 µg/g dry weight, for Zn concentration in raw "etak" 29.13 µg/g dry weight and in smoked "etak" is 34.92 µg/g dry weight and for Pb concentration in raw "etak" is 0.15 µg/g dry weight and in smoked "etak" is 0.98 µg dry weight. All concentration of heavy metal residue in both raw and smoked etak was lower than permissible concentration by Malaysian Food Regulation (1985) and Food and Agriculture Organization. From this study, consumer can determine consumption heavy metal residue in etak within permissible amount by Malaysian Food Regulation and Food and Agriculture Organization to avoid heavy metal poisoning that will affect human body system.