Exhibit 31.1




CERTIFICATION




I, Nathaniel T. Brown, certify that:




1.  I have reviewed this quarterly report on Form 10-Q
of Eden Bioscience Corporation;




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;




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;




4.  I am 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:




a)  Designed such disclosure controls and procedures,
or caused such disclosure controls and procedures to be designed under my supervision, to ensure that material information relating to the registrant,
including its consolidated subsidiaries, is made known to me by others within those entities, particularly during the period in which this report is
being prepared;




b)  Designed such internal control over financial
reporting, or caused such internal control over financial reporting to be designed under my 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;




c)  Evaluated the effectiveness of the
registrants disclosure controls and procedures and presented in this report my 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




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




5.  I have disclosed, based on my most recent
evaluation of internal control over financial reporting, to the registrants auditors and the audit committee of the registrants board of
directors (or persons performing the equivalent functions):




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




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.




Date: May 5, 2009


| |  |  |  | /s/ Nathaniel T.
BrownNathaniel T. Brown Chief Executive Officer, Chief Financial Officer and Secretary
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