Concentration of pathogenic bacteria and trace metals in bivalve mollusk Anadara granosa (Bivalvia: Arcidae) harvested from East Java Coast, Indonesia

A study to evaluate the level of Escherichia coli, Salmonella and trace metals in bivalves Anadara granosa collected from East Java Coast has been conducted. The results showed that all stations demonstrated undetectable values of Salmonella in bivalve tissues. In contrast, the Escherichia coli values in bivalves ranged from undetectable level to 4800 MPN.100 g^-1. Measurement for lead of all samples of bivalves from all sampling sites was always below the detection limit of 0.0405 mg.kg^-1. The concentrations of cadmium in bivalves highly varied from 1.234 to 2.404 mg.kg^-1, and mercury levels were between < 0.0014 and 0.048 mg.kg^-1. Escherichia coli level in bivalves from some locations evaluated exceeded the acceptable limit for shellfish for human consumption. This study reported that the concentrations of lead and mercury in Anadara granosa was below the range acceptable for consumption. However, the concentrations of cadmium in bivalves harvested from some locations of East Java Coast were higher than the maximum acceptable limit for consumption.