Open AccessSurvival of Salmonella enteritidis and Salmonella typhimurium in chicken manure at different levels of water activity
Author(s) -
Himathongkham Sakchai,
Nuanualsuwan Suphachai,
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.tb13464.x
Subject(s) - salmonella enteritidis , salmonella , water activity , food science , manure , relative humidity , chemistry , biology , chicken manure , enterobacteriaceae , microbiology and biotechnology , bacteria , escherichia coli , water content , agronomy , biochemistry , genetics , physics , geotechnical engineering , engineering , thermodynamics , gene
Abstract Survival of Salmonella enteritidis and Salmonella typhimurium in chicken manure at different levels of water activity ( a w ) was determined. The a w was adjusted by means of saturated salts with defined equilibrium relative humidity and the manure samples were stored aerobically at 20°C. At a w levels higher than 0.93, a moderate increase in colony‐forming units over 8–9 h was found for both strains; at a w levels of 0.89–0.75, there was a thousand‐fold reduction. Extended storage resulted in a million‐fold reduction of Salmonella enteritidis in 8 days at an a w of 0.89. At higher and lower levels of a w , the reduction was less extensive.