[Effect of high hydrostatic pressure on microbial physiological characteristics].
Physiological characterizations of Listeria monocytogenes NCTC 11994 and Escherichia coli ATCC 80739 have deeply changed by high hydrostatic pressure. The results showed that counts of both microbial strains decreased 7 log cfu at 400MPa, 10 min. Pressure treatments also resulted in change of Intracellular pH value, lowed membrane potential, have internal potassium filtered out, and decreased ATP concentration.
Li
Zong-Jun
ZJ
The College of Food Science and Technology, Hunan Agriculture University, Changsha 410128, China. lizongjun@yahoo.com.cn
Xu
Jian-Xing
JX
D000255:Adenosine Triphosphate / Q000032:analysis; D004926:Escherichia coli / Q000166:cytology / Q000502:physiology*; D006863:Hydrogen-Ion Concentration; D006874:Hydrostatic Pressure; D008089:Listeria monocytogenes / Q000166:cytology / Q000502:physiology*; D008564:Membrane Potentials; D011188:Potassium / Q000032:analysis; D013242:Sterilization
D000255:Adenosine Triphosphate; D011188:Potassium