Open AccessDestruction of Salmonella typhimurium, Escherichia coli O157:H7 and Listeria monocytogenes in chicken manure by drying and/or gassing with ammonia
Author(s) -
Himathongkham Sakchai,
Riemann Hans
Publication year - 1999
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1999.tb13430.x
Subject(s) - listeria monocytogenes , salmonella , escherichia coli , microbiology and biotechnology , manure , enterobacteriaceae , food science , listeria , bacteria , chemistry , biology , biochemistry , agronomy , gene , genetics
Escherichia coli O157:H7 and Listeria monocytogenes were able to grow for a period of 2 days in fresh chicken manure at 20°C with a resulting 1–2 log units increase in CFU; Salmonella typhimurium remained stable. Prolongation of the storage time to 6 days resulted in a 1–2 log decrease of S. typhimurium compared to the initial count and a 3–4 log decrease of E. coli O157:H7; the number of L. monocytogenes did not decrease below the initial. These changes were accompanied by an increase in pH and accumulation of ammonia in the manure. The destruction of the three microorganisms was greatly increased by drying the manure to a moisture content of 10% followed by exposure to ammonia gas in an amount of 1% of the manure wet weight; S. typhimurium and E. coli O157:H7 were reduced by 8 log units, L. monocytogenes by 4.