Pure Bioscience Inc. is seeking government approval for its Silver Dihydrogen Citrate as a produce processing aid as a direct food contact substance after testing showed it can reduce salmonella, listeria and E. coli on leafy greens.
The San Diego-based company filed “food contact notification” documents with the Food and Drug Administration Oct. 9, according to a news release. The review period is 120 days, after which the product will be automatically approved for use if the FDA does not have any concerns, according to the release.
Company officials plan to begin commercialization of the Silver Dihydrogen Citrate in the first quarter of 2015 for use in fresh produce processing. Hank Lambert, Pure’s CEO, said in the release he believes the product is a practical and effective solution to reduce food safety threats from minimally processed fresh produce.
Research on the product by Kansas State University’s James Marsden showed “average reductions up to 2.36 log when applied alone as a spray and up to 3.10 log when combined with chlorine wash,” according to the release. Marsden tested the product for salmonella, listeria and E. coli control on iceberg lettuce, spinach and cilantro.
“Currently, processors target achieving only a 1 log10 CFU/cm2 reduction per intervention treatment,” according to the release. “Data suggests that by incorporating SDC, processors can improve their results 100-fold with only one step.”