EXHIBIT 10.23

                         PLEDGE AND SECURITY AGREEMENT

     This Pledge and Security Agreement (the "AGREEMENT") is entered into 
this 1st day of October, 1998 by and between Landec Corporation, a California 
corporation (the "COMPANY") and Michael L. Williams ("PURCHASER").

                                    RECITALS

     In order to assist Purchaser in meeting certain financial commitments 
and obligations, the Company has agreed to lend Purchaser $500,000 pursuant 
to a promissory note of even date herewith (the "NOTE").  The Company 
requires that the Note be secured by a pledge of Purchaser's interest in the 
Earn-Out payments described in Section 1.3 of the Agreement and Plan of 
Reorganization among the Company, the undersigned, Intellicoat Corporation 
and Williams & Sun, Inc. dated August 20, 1997 (the "EARN-OUT") on the terms 
set forth below.

                                   AGREEMENT

     In consideration of the Company's acceptance of the Note, and for other 
good and valuable consideration, the receipt of which is hereby acknowledged, 
the parties hereto agree as follows:

     1.   The Note shall become payable as described therein.

     2.   Purchaser shall deliver to the Chief Financial Officer of the 
Company, or her designee (hereinafter referred to as the "PLEDGE HOLDER"), an 
Assignment of Interest in the form attached to this Agreement as ATTACHMENT A 
executed by Purchaser and by Purchaser's spouse, in blank, for use in 
transferring all or a portion of the Collateral to the Company if, as and 
when required pursuant to this Agreement.  In addition, if Purchaser is 
married, Purchaser's spouse shall execute the signature page attached to this 
Agreement.

     3.   As security for the payment of the Note and any renewal, extension 
or modification of the Note, Purchaser hereby grants to the Company a 
security interest in and pledges with and delivers to the Company, the 
Earn-Out (sometimes referred to herein as the "COLLATERAL").

     4.   In the event of any foreclosure of the security interest created by 
this Agreement, the Company may assign the rights to the Earn-Out payment to 
a third party or retain the payments itself.

     5.   In the event of default in payment when due of any indebtedness 
under the Note, the Company may elect then, or at any time thereafter, to 
exercise all rights available to a secured party under the California 
Commercial Code including the right to sell the Collateral at a private 



or public sale or retain the Collateral as provided above.  The proceeds of 
any sale shall be applied in the following order:

                 (a)     To the extent necessary, proceeds shall be used to 
pay all reasonable expenses of the Company in enforcing this Agreement and 
the Note, including, without limitation, reasonable attorney's fees and legal 
expenses incurred by the Company.

                 (b)     To the extent necessary, proceeds shall be used to 
satisfy any remaining indebtedness under Purchaser's Note.

                 (c)     Any remaining proceeds shall be delivered to 
Purchaser.

     6.   Upon full payment by Purchaser of all amounts due under the Note, 
Pledge Holder shall destroy the executed Assignment of Interest, and Pledge 
Holder shall thereupon be discharged of all further obligations under this 
Agreement.

     The parties have executed this Pledge and Security Agreement as of the 
date first set forth above.

COMPANY:                                     PURCHASER:

LANDEC CORPORATION                           MICHAEL L. WILLIAMS



By:  /s/ Joy T. Fry                               /s/ Michael L. Williams
     --------------------------              -----------------------------------
     Joy T. Fry, VP and CFO

Address:  3603 Haven Avenue                  Address:  306 NORTH MIN STREET
          Menlo Park, CA  94025                        MONTICELLO, IN 47960



                                ASSIGNMENT OF INTEREST


     Michael L. Williams does hereby sell, assign and/or transfer to Landec 
Corporation or its assigns the right to receive $____________ pursuant to the 
terms of Section 1.3 of that certain Agreement and Plan of Reorganization 
dated August 20, 1997 among Landec Corporation, Intellicoat Corporation, 
Williams & Sun, Inc. and Michael L. Williams and does hereby irrevocably 
constitute and appoints Gary T. Steele and Joy T. Fry and each of them as his 
attorney-in-fact to execute and deliver any documents associated with such 
transfer with full power of substitution in the premises.


Dated: 
       ---------------


                                       /s/ Michael L. Williams
                                       ------------------------------
                                       Michael L. Williams

     In consideration for the willingness of Landec Corporation to loan 
$500,000.00 to Michael L. Williams, I hereby consent to the foregoing 
assignment.

                                       /s/ Diane Williams
                                       ------------------------------
                                       Diane Williams



                                PROMISSORY NOTE

$500,000                                                   Monticello, Indiana
                                                               October 1, 1998

     For value received, the undersigned promises to pay Landec Corporation, 
a California corporation (the "COMPANY"), at its principal office the 
principal sum of $500,000 (the "PRINCIPAL") with interest from the date 
hereof at a rate of 7.50% per annum, compounded annually, on the unpaid 
balance of such principal sum.

     Such principal and interest shall be due and payable as follows:

          (a)    the greater of (1) $480,000, and (2) the payment payable to 
the undersigned by the Company pursuant to Section 1.3 of the Agreement and 
Plan of Reorganization among the Company, Intellicoat Corporation, Williams & 
Sun, Inc. and the undersigned dated August 20, 1997 (the "REORGANIZATION 
AGREEMENT") for the Base Year (as defined in the Reorganization Agreement) 
ending on June 30, 1999, together with any accrued interest thereon, shall be 
due and payable on July 31, 1999, PROVIDED HOWEVER, that in no event shall 
this Note cause the undersigned to be obligated to pay more than the 
Principal together with interest accrued thereon.

          (b)    All remaining amounts outstanding hereunder, including any 
accrued but unpaid interest shall be due and payable on July 31, 2000.

     Principal and interest are payable in lawful money of the United States 
of America.  AMOUNTS DUE UNDER THIS NOTE MAY BE PREPAID AT ANY TIME WITHOUT 
INTEREST OR PENALTY.

     Should suit be commenced to collect any sums due under this Note, such 
sum as the Court may deem reasonable shall be added hereto as attorneys' 
fees.  The makers and endorsers have severally waived presentment for 
payment, protest, notice of protest, and notice of nonpayment of this Note.

     This Note, is secured by a pledge of the undersigned's interest in the 
Earn-Out payments for all Base Years described in Section 1.3 of the 
Reorganization Agreement and is subject to the terms of a Pledge and Security 
Agreement between the undersigned and the Company of even date herewith.


                                       /s/ Michael L. Williams
                                       ------------------------------
                                       Michael L. Williams