The concentration of total free amino acids increased significantly
(P b 5%) during refrigerated storage up to 28 d in the case of horse and
beef sausages; however, it decreased for turkey sausage, along with
notorious increases of histamine, tyramine and putrescine levels. In particular,
histamine in turkey sausage attained a level that is twice themaximum
recommended (and enforced) by EC regulations; hence, special
care should be exercised regarding consumption of this type of sausage,
especially by health compromised or otherwise susceptible individuals.