Exhibit 31.1

CERTIFICATION

I,  Michael L. Krall, certify that:

|1. | I have reviewed this report on Form 10-Q of Pure Bioscience.
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|2. | Based on my knowledge, this report does not contain any untrue statement of a
          material fact or omit to state a material fact necessary to make the statements
          made, in light of the circumstances under which such statements were made, not
          misleading with respect to the period covered by this report;
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|3. | Based on my knowledge, the financial statements, and other financial information
          included in this report, fairly present in all material respects the financial
          condition, results of operations and cash flows of the  registrant as
          of, and for, the periods presented in this report;
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|4. | The  registrants other certifying officer(s) and I are
          responsible for establishing and maintaining disclosure controls and procedures
          (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control
          over financial reporting (as defined in Exchange Act Rules 13a-15(f) and
          15d-15(f)) for the   registrant and have:
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| | a) | Designed such disclosure controls and procedures or caused such disclosure
               controls and procedures to be designed under our supervision, to ensure that
               material information relating to the  registrant, including its
               consolidated subsidiaries, is made known to us by others within those entities,
               particularly during the period in which this report is being prepared;
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| | b) | Designed such internal control over financial reporting, or caused such internal
               control over financial reporting to be designed under our supervision, to
               provide reasonable assurance regarding the reliability of financial reporting
               and the preparation of financial statements for external purposes in accordance
               with generally accepted accounting principles;
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| | c) | Evaluated the effectiveness of the  registrants disclosure
               controls and procedures and presented in this report our conclusions about the
               effectiveness of the disclosure controls and procedures, as of the end of the
               period covered by this report based on such evaluation; and
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| | d) | Disclosed in this report any change in the  registrants internal
               control over financial reporting that occurred during the
                registrants most recent fiscal quarter (the  registrants fourth fiscal quarter in the case of an annual
report)
 that has materially affected, or is
               reasonably likely to materially affect, the   registrants
               internal control over financial reporting; and
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|5. | The  registrants other certifying officer(s) and I have
          disclosed, based on our most recent evaluation of internal control over
          financial reporting, to the  registrants auditors and the audit
          committee of  registrants board of directors (or persons
          performing the equivalent functions):
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| | a) | All significant deficiencies and material weaknesses in the design or operation
               of internal control over financial reporting which are reasonably likely to
               adversely affect the   registrants ability to record, process,
               summarize and report financial information; and
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| | b) | Any fraud, whether or not material, that involves management or other employees
               who have a significant role in the   registrants internal control
               over financial reporting.
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Date: June 12, 2008 /s/ Michael L.
KrallMichael L. Krall President and Chief Executive Officer

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