Food Microbiology Research Papers - Academia.edu (original) (raw)

Contamination of heavy metals in certain levels of food can disrupt human health. Heavy metals have toxic properties, cannot be overhauled or destroyed by living organisms, can accumulate in the body of organisms including humans, either directly or indirectly. Heavy metal Hg, Cd, Cr is a very toxic metals (can result in death or health problems that are not recovered in a short time), while heavy metal Co, Pb, Cu toxicity is moderate (can lead to both recoverable and non-recoverable health problems in a relatively long time). Hence the heavy metal contaminating the food must be eliminated or reduced to a safe level. One effort was use coriander leaves to reduce the contamination of heavy metals in fish/shellfish. The objective of the research was to prove the extract of coriander leaves can reduce heavy metal contamination of Pb, Hg and Cu in rod shellfish (lorjuk). The treatment of this research was long soaking in coriander leaves extract that were 0, 30, 60 and 90 minutes. The results showed that the longer time of soaking can decrease Pb level from 4.4 ± 0.424 ppb to 1.7 ± 0.5 ppb, Hg level from 4.11± 0.07 to 1.12± 0.6 ppb, and Cu level from 433.7 ± 0.1 ppb to 117 ± 0.78 ppb. Protein content not significant decrease in rod shellfish (lorjuk) after 90 minutes soaking time, that was from 28.56 ± 0.403% to 26,625 ± 0.19%. 1. Introduction Contamination of heavy metals in food at a certain level can interfere with human health. The problem posed by heavy metals is quite complicated, because heavy metals have toxic properties [1] , cannot be overhauled or destroyed by living things, can accumulate in the body of organisms including humans, either directly or indirectly. Heavy metals Hg, Cd, Cr, Pb are highly toxic metals (can result in death or health problems that are not recovered in a short time) [2] medium Co coat is moderate toxicity (can cause both recoverable and non-recoverable health problems in a relatively long time) [3]. Heavy metals become toxic when they are not metabolized by the body and accumulate in tissues [4]. Heavy metals are dangerous because they tend to accumulate in living organisms [5]. As trace elements, some heavy metals are essential to maintain the metabolism of human body. However, at higher concentrations they can lead to poisoning. Some heavy metals like mercury, cadmium and lead are highly toxic in nature [6] ; [7]. The content of heavy metals, namely cuprum (Cu), mercury (Hg), copper (Cr), lead (Pb), and cadmium (Cd), has piled-pile settled and inundated Kenjeran Beach's water. Research conducted by "Balai Teknik