Estimates of maximum tolerable levels of tyramine content in foods in Austria
2012
Paulsen, P., University of Veterinary Medicine Vienna, Vienna (Austria) | Grossgut, R. | Bauer, F. | Rauscher-Gabernig, E.
Tyramine is one of the most relevant vasoactive ("pressor") amines present in foods. This paper suggests risk-based tolerable levels of this compound for certain food commodities. Dose-response data indicate that the no observed adverse effect level (NOAEL) for healthy individuals is 200 mg per single oral administration. Based on this NOAEL and Austrian food consumption data, maximum tolerable levels for foods (high consumption scenario: female user, 60 kg body mass, 95 percentile) are 1 000 mg per kg for cheese; 2 000 mg per kg for fermented - raw cured meats; 950 mg per kg for fish (raw or processed) and 800 mg per kg for sauerkraut. Reduced bioavailability of amines when ingested with solid foods was considered, susceptible consumers and interactions with other dietary amines were not considered. Literature data indicate that, at least for cheese, these limits may be exceeded in practice. However, surveys on market samples in Austria (2000–2008) report maximum tyramine contents well below the estimated tolerable contents (440 mg per kg, 240 mg per kg and 430 mg per kg for cheese, fish and fermented meats, respectively). Under medication with monoaminooxidases inhibitors, a safe-side NOAEL of 5 mg per meal can be assumed, which may easily be exceeded even under "normal" nutrition conditions that requires some degree of consumer awareness.
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