contamination. After absorption, Cu is distributed into liver and
kidney rather than into fatty tissue and it is excreted in bile
(European Commission, 2003). The European Union maximum residue
limits (MRLs) for Pb (EC 466/2001) in beef, lamb, pork, and
poultry are 0.1 and 0.5 mg/kg in meat and offal, respectively, and
0.2 mg/kg in fish, and it is concluded that the contents of Cu and
Pb in these FOGs (Table 4) are not liable to pose a threat to human
health. However, grease trap waste from chicken processing has
been used occasionally in Thailand as source of fat in feed for freshwater
fish and the accumulation of Pb in fish might have serious
consequences. Also, it is worth noting that if FOGs are to be used
to prepare other commercially useful materials by processes in
which microorganisms are involved, the potential toxicity of these
heavy metals, if present, must be investigated.
contamination. After absorption, Cu is distributed into liver and
kidney rather than into fatty tissue and it is excreted in bile
(European Commission, 2003). The European Union maximum residue
limits (MRLs) for Pb (EC 466/2001) in beef, lamb, pork, and
poultry are 0.1 and 0.5 mg/kg in meat and offal, respectively, and
0.2 mg/kg in fish, and it is concluded that the contents of Cu and
Pb in these FOGs (Table 4) are not liable to pose a threat to human
health. However, grease trap waste from chicken processing has
been used occasionally in Thailand as source of fat in feed for freshwater
fish and the accumulation of Pb in fish might have serious
consequences. Also, it is worth noting that if FOGs are to be used
to prepare other commercially useful materials by processes in
which microorganisms are involved, the potential toxicity of these
heavy metals, if present, must be investigated.
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