A Less Hazardous Enrichment Broth for Listeria without Cycloheximide and Acriflavine.

The hazardous substances cycloheximide and acriflavine are used as selective agents in standard listeria enrichment broths. This study was undertaken to develop a less hazardous listeria enrichment broth in order to avoid occupational-safety and waste-management problems. The replacement of cycloheximide (50 mg/l) and acriflavine (15 mg/l) with natamycin (25 mg/l), moxalactam (10 mg/l) and bacitracin (20 mg/l) did not inhibit the growth of Listeria monocytogenes .

The Effect of GDL-induced pH Decrease on the Formation of Biogenic Amines in Meat.

The effect of pH on the formation of biogenic amines has mainly been studied in broths in which pH has been fixed before incubation. However, in the fermentation of dry sausage, pH quite rapidly decreases from the initial value to a certain level. In this study glucono-delta-lactone (GDL) was used to decrease pH in meat, Six minced meat samples were each divided into three portions (A-C): 0% (A), 0.