POWER OF ATTORNEY

The undersigned hereby appoints each of Thomas D. Malkoski,
Steven O. Cordier, Margaret Von der Schmidt, Christopher L.
Lawlor and Richard B. Dodd, signing singly, the
undersigned's attorney-in-fact to:

(1)	execute for the undersigned, in the undersigned's
capacity as an officer and/or director of Penford
Corporation (the "Company"), Forms 3, 4 and 5 in
accordance with Section 16(a) of the Securities
exchange Act of 1934, as amended, and the rules
and regulations thereunder; and

(2)	perform all acts for the undersigned that may be
necessary or desirable to complete and execute
any such Form 3, 4 or 5 and timely file such form
with the Securities and Exchange Commission and
any stock exchange or similar authority.

The undersigned hereby grants to each such attorney-in-fact
full power and authority to do and perform every act and
thing whatsoever requisite, necessary or proper to be done
in the exercise of any of the rights and powers herein
granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with
full power of substitution or revocation, hereby ratifying
and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall
lawfully do or cause to be done by virtue of this power of
attorney and the rights and powers herein granted.  The
undersigned acknowledges that the foregoing attorneys-in-
fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming,
any of the undersigned's responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934, as
amended.

This Power of Attorney shall remain in full force and
effect until the undersigned is no longer required to file
Forms 3, 4 and 5 with respect to the undersigned's holdings
of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed
writing delivered to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power
of Attorney to be executed as of this 18th day of August,
2005.


/s/ Timothy Kortemeyer