Apart from one isolate, S. thermophilus produces tyramine atlow (47 isolates) and medium (10 isolates) levels (Fig. 2). La Gioiaet al. (2011) reported that S. thermophilus 1TT45 was able to produceup to 370 mg/L of tyramine in milk containing tyrosine. S.thermophilus and Lactobacillus plantarum produced tyramine lowerthan 0.4 mg/L in histidine enrichment medium. (Bover-Cid &Holzapfel, 1999). Lorencova et al. (2012) reported that most of the Lactobacillus strains isolated from dairy products produced<10 mg/L of tyramine, whereas Lb. curvatus DCT 106 accumulatedthe highest amounts of tyramine (>100 mg/L). The dominantbiogenic amine found in the culture supernatant of Lb. brevis wastyramine, which was formed by 96% of the strains (Sebastian, Herr,Fischer, & König, 2011).
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