Growth Inhibition and Cell Membrane Damage of Two Foodborne Pathogens by Ferrous Lactate

doi:10.7506/spkx1002-6630-201321025

Abstract

Abstract:

The effect of ferrous lactate on growth inhibition and cell membrane damage of Staphylococcus aureus (G+)
and Pseudomonas aeruginosa (G－) were investigated through the determination of growth curve and leakage of intracellular
substances. As the results showed, the growth of the pathogenic bacteria was inhibited after ferrous lactate treatment,
accompanied by increases in the conductivity, OD260nm, reducing sugar content and soluble sugar content by 14%, 42%, 40%
and 6.87%, respectively, as compared to the control group. These observations indicated that ferrous lactate solution could
damage cell membrane, thus resulting in an increase in the permeability of cell membrane and the release of large amounts
of intracellular contents, and finally inhibiting bacterial growth.

Key words: ferrous lactate, Staphylococcus aureus, Pseudomonas aeruginosa, growth inhibition, cell membrane damage

CLC Number:

TS201

YANG Jing，YU Xin*，YANG Peng-bin，LIU Shu-yu，HUANG Xiao-min. Growth Inhibition and Cell Membrane Damage of Two Foodborne Pathogens by Ferrous Lactate[J]. FOOD SCIENCE, 2013, 34(21): 121-124.

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