Deadly For Bacteria, Great For Consumers

“Electrolyzed water” – produced by applying an electrical current to a very dilute saltwater solution – kills bacteria on fresh produce more effectively in some cases than heat or water containing chlorine, according to a research report presented here today at the 220th national meeting of the American Chemical Society, the world’s largest scientific society.

Electrolyzed water could also be used to sanitize cutting boards, eating and drinking utensils, and food-processing equipment, says Yen-Con Hung, Ph.D., the University of Georgia professor who conducted the research. Soaking a cutting board in electrolyzed water for about five minutes at a moderately warm temperature (about 95-105 F) can reduce bacteria up to a million-fold, he says.

One advantage of using electrolyzed water to kill bacteria on food surfaces is that it doesn’t adversely affect quality as heat can, according to Hung.

Trained sensory panelists “found there was no significant effect of the treatment on the quality,” he said. They were “unable to find any differences in color, appearance or smell” between produce washed with electrolyzed water and produce washed with tap water.

The electrolytic process produces very acidic water. Hung believes the water’s low pH (acidity) and potential for oxidation-reduction contribute to its effectiveness. Essentially, oxidation-reduction involves the exchange of electrons. In the case of bacteria like E. coli, salmonella and listeria, this exchange may take away electrons needed by cell membranes for metabolism and survival.

“We think the main indicator of the effectiveness of the solution is the oxidation-reduction potential,” says Hung. “When you compare chlorinated water with electrolyzed water, there is a difference in the oxidation-reduction potential, even though they have the same chlorine concentration.” The exact role of oxidation-reduction in destroying bacteria is still being investigated, he says.

Chlorine is not physically added to electrolyzed water, but is produced when the electrical current passes through the water and salt mixture. The chlorine that is generated “is definitely one of the major components for killing microorganisms,” Hung acknowledges. But, he adds, electrolyzed water has additional active components – oxidants – that his research group is trying to identify.

The equipment needed to produce and treat food with electrolyzed water is compact and already produced by several companies in Japan. A typical unit costs between $3,000 and $5,000, says Hung. He believes the food industry will be first to use electrolyzed water and then, as equipment costs come down, consumers will use it at home.

A fast-food chain in the United States is testing the technology and several other companies have expressed interest, according to Hung. He did not identify them.

A few U.S. water treatment plants already use technology similar to that tested, according to Hung.

Comments are closed.

INTEL XEON E5 2520V2 E5 2620V2 SR1AN 2.10 GHZ Core Processor 3401A832 picture

INTEL XEON E5 2520V2 E5 2620V2 SR1AN 2.10 GHZ Core Processor 3401A832

$12.00



HPE Intel Xeon E5-2630L v4 Docosa-core [22 Core] 2.20 GHz Processor Upgrade - picture

HPE Intel Xeon E5-2630L v4 Docosa-core [22 Core] 2.20 GHz Processor Upgrade -

$66.76



INTEL C1P87A XEON PHI PROCESSOR 5110P picture

INTEL C1P87A XEON PHI PROCESSOR 5110P

$29.99



INTEL S5000PSL Multi-Core Xeon Motherboard / Server Board w/ 2X L5420 & 2X2G RAM picture

INTEL S5000PSL Multi-Core Xeon Motherboard / Server Board w/ 2X L5420 & 2X2G RAM

$61.62



DELL PowerEdge R320 picture

DELL PowerEdge R320

$80.00



Super SuperMicro X7DVL-E Intel Xeon Server Mother Board dual CPU sockets SL9RX picture

Super SuperMicro X7DVL-E Intel Xeon Server Mother Board dual CPU sockets SL9RX

$75.00



120 Socket LGA4189 Processor Clamshell-Case Fits Xeon Platinum Gold Silver CPUs picture

120 Socket LGA4189 Processor Clamshell-Case Fits Xeon Platinum Gold Silver CPUs

$110.00



DELL PRECISION 7730 INTEL XEON E2186M NVIDIA P4200 64GB RAM **NO HD/ NO CADDIE picture

DELL PRECISION 7730 INTEL XEON E2186M NVIDIA P4200 64GB RAM **NO HD/ NO CADDIE

$429.95



NETWORK INSTRUMENT GIGASTOR- 2U (2X) XEON E5-2630- 64 GB PC3 RAM picture

NETWORK INSTRUMENT GIGASTOR- 2U (2X) XEON E5-2630- 64 GB PC3 RAM

$144.49



Trenton 92-506313-XXX W/ 2x Intel Xeon Processors & 4GB DDR2 RAM picture

Trenton 92-506313-XXX W/ 2x Intel Xeon Processors & 4GB DDR2 RAM

$110.00



Powered by WordPress. Designed by WooThemes