Evaluation of Chromogenic Enzyme Substrate Mediums, Chromocult Coliform Agar(CCA) and XM-G, by Detection of Freeze-, Heat-, High-Pressure-Injured Coliforms, and Coliforms in Food Samples

Evaluation of the Adequacy of the Consume-by Date of Rice Balls Sold at Convenience Stores

“…The samples were diluted in XM-G agar Nissui Pharmaceutical Co., Ltd. Ogihara et al, 2004 and incubated at 35 for 24 h. The colonies with blue or violet-blue color were determined to be E. coli and those with pink or red color were determined to be coliforms other than E. coli.…”