Pink discoloration defects in cheese manifests as the appearance of pink patches within blocks and has recently been associated with Thermus thermophilus. Swiss-type cheeses were prepared at pilot scale using thermophilic starter cultures, Propionibacterium freudenreichii, one thermophilus HB27, scotoductus SE1 or DPC6866 a control without Thermus. Significantly, higher level redness was observ...