Much of the research into artificial meat is being done in Europe with scientists in Holland and Britain developing edible tissue grown from stem cells in laboratories.
210Po in most dissected fish samples shows increasing concentrations in the following order: edible tissue, gills, digestive system, liver and fecal matter.
Considering the PFAA accumulation in edible tissue, similar amounts of all examined PFAAs (40 49 %) were found in the meat of fattening pigs.
Based on figures in a 2013 paper published by indoor plant-growth expert Toyoki Kozai of Japan's Chiba University and on the assumption of efficient LED lighting, I estimate that plants like potato or tomato that produce a fleshy food product require about 1,200 kilowatt-hours of electricity for each kilogram of edible tissue they produce, not counting the water stored in the food.
Other seeds, such as apple pips and plum stones, have fleshy receptacles and smaller fruits like hawthorns have seeds enclosed in edible tissue; animals including mammals and birds eat the fruits and either discard the seeds, or swallow them so they pass through the gut to be deposited in the animal's droppings well away from the parent tree.
PCB biotransformation to nongenotoxic metabolites (no increase in the cancer slope factor) by the aquatic animal reduced cancer risk by reducing the steady-state concentration of PCBs in the edible tissue.
One uncertainty in Hg concentration data for each species that has not been accounted for in this study is the fraction of total Hg present as MeHg in edible tissue (%MeHg).
Overall, the results of both laboratory and field studies show that generally low levels (nanograms per gram wet weight) of a few low molecular weight PAHs may be present in edible tissue of fish from contaminated areas and that high molecular weight PAHs, such as the carcinogen benzo(a pyrene, will rarely be detected because of extensive metabolism.
Thus, these studies clearly demonstrate that to obtain some insight into the questions of whether there is any risk to human health from consuming fish and crustaceans from urban areas, techniques must be developed that measure metabolites of carcinogens, such as PAHs, in edible tissue.
