US EPA Publishes Key Regulation Regarding Silver’s Use for Indirect Food Contact Sanitization

SAN DIEGO, Calif., June 10, 2009 – PURE Bioscience (NASDAQ: PURE), creators of the patented silver dihydrogen citrate (SDC) antimicrobial, confirmed today that the U.S. Environmental Protection Agency (EPA) published in today’s Federal Register (Vol. 74, No. 110) a new regulation establishing a particular form of silver ion technology as an active ingredient for the sanitizing of food contact surfaces.  The petition was submitted by ETI-H2O, a wholly owned subsidiary of PURE Bioscience.  The full text of the final rule may be accessed using this link:

http://www.regulations.gov/fdmspublic/component/main?main=DocumentDetail&o=09000064809cb57b.

At this time, PURE does not have a product registered for sale as a food contact surface sanitizer, but the publication of this rule is an important step for expanding the uses of silver dihydrogen citrate.

About PURE Bioscience

PURE Bioscience develops and markets technology-based bioscience products that provide solutions to numerous global health challenges.  PURE's proprietary high efficacy/low toxicity bioscience technologies, including its silver dihydrogen citrate-based antimicrobials, represent innovative advances in diverse markets and lead today's global trend toward industry and consumer use of "green" products while providing competitive advantages in efficacy and safety.  Patented SDC is an electrolytically generated source of stabilized ionic silver which formulates well with other compounds.  As a platform technology, SDC is distinguished from competitors in the marketplace because of its superior efficacy, reduced toxicity and the inability of bacteria to form a resistance to it.  PURE is headquartered in El Cajon, California (San Diego metropolitan area).  Additional information on PURE is available at www.purebio.com.

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