sodium tripolyphosphate:
http://www.thefishsite.com/fishnews/...sphate-in-fish
"In large quantities, STPP is a suspected neurotoxin, as well as a registered pesticide and known air contaminant in the state of California."
calcium propionate:
The Side Effects Of Calcium Propionate | LIVESTRONG.COM
Side effects include stomach ulcers, headaches, behavioral changes.
potassium sorbate:
Fundamentally, potassium sorbate is non-toxic and is regarded as safe. However, its synthetic characteristic is not considered too favorable by some experts. Prolonged use of the preservative could lead to
allergic reactions, nausea, diarrhea and nutrient loss in food. Toxicity of potassium sorbate is akin to that of table salt.
Potassium Sorbate Dangers and Side Effects