Patent ID: 8501457

Claim:
An enrichment medium for enhancing growth of Listeria a spp., the medium comprising, per 1 L of water, about 10 to about 40 g of tryptic soy broth, about 1 to about 10 g of yeast extract, about 1 to about 10 g of lithium chloride, about 1 to about 5 g of pyruvate or a salt thereof, about 4 g of MOPS free acid, about 7.1 g of sodium MOPS, about 1 to about 10 mg of acriflavine, about 5 to about 15 mg of polymyxin B, about 10 to about 30 mg of ceftazidime, about 0.01 to about 1 g of ferric ammonium citrate, and about 1 to about 10 g of beef extract.