|
(W/EH084) Trace metals in the crab Scylla serrata from coastal area of Semarang and its food safety risk. Widianarko, Budi1, Leliveld, Mariska2, Pujilestari, Savitri1, Van Straalen, Nico2, 1 2 ABSTRACT- Consumption safety of the crab Scylla serrata from the coast of Semarang, Central Java, Indonesia, was evaluated based on tissue distribution of trace metals (copper, zinc, lead, cadmium, and iron) in crab and the corresponding consumption data. Samples of crabs were collected from five (5) sites along the coast of Semarang. Each individual crab was dissected into five different tissues, namely muscles, gills, hepatopancreas, carapace, eyes and the rest. Trace metals contents of each tissue were determined using flame-AAS (Cu, Fe and Zn) and graphite furnace-AAS (Pb and Cd). Consumption data were obtained from a survey interviewing 410 people who are considered as regular crab-eaters. Three consumption scenarios were used in predicting level of consumption risk, i.e. consumption of (a) the whole crab, (b) muscles, gills and hepatopancreas, and (c) muscles only. Based on data of consumption and tissue distribution of trace metals in the crab, intake of each metal can be estimated. The intake values were then compared with the corresponding values of provisional tolerable weekly intakes (PTWIs) set by FAO/WHO, and resulted in the values of risk contribution (R) for each metal and maximum number of crab that can be consumed (MCC). Under scenarios A, B and C predicted R values ranged from 1,9% (Pb) to 77,8% (Fe); 0,9%(Pb to 15,3% (Cu); and 0,5%(Pb) to 9,9% (Cu), respectively. Values of the MCC under scenarios A, B and C ranged from 1,3 crabs (Fe) to 51,4 crabs (Pb); 6,5 crabs (Cu) to 109,3 crabs (Pb); and 10,1 crabs(Cu) to 210,1 crabs (Pb), respectively. Key words: trace metals, crab, tissue distribution, food safety |
