DYADIC INTERNATIONAL, INC.
                          2001 EQUITY COMPENSATION PLAN
                          STOCK OPTION GRANT AGREEMENT

         This STOCK OPTION GRANT AGREEMENT (this  "AGREEMENT"),  dated as of the
31st day of  January,  2005  (the  "DATE OF  GRANT"),  is  delivered  by  Dyadic
International, Inc. (the "COMPANY") to Wayne Moor (the "GRANTEE").

                                    RECITALS

         A. Concurrently with the execution and delivery of this Agreement,  the
Grantee has entered into an employment  agreement with the Company dated of even
date  herewith  (as  may  be  amended,   restated  or  otherwise  modified,  the
"EMPLOYMENT  AGREEMENT"),  pursuant  to which the  Grantee  will serve as a Vice
President and the Chief Financial Officer of the Company.

         B. The Dyadic International, Inc. 2001 Equity Compensation Plan (as may
be amended,  restated or otherwise modified,  the "PLAN") provides for the grant
of options to purchase shares of common stock of the Company. A copy of the Plan
has  heretofore  been  furnished  to the  Grantee,  receipt  of which is  hereby
expressly acknowledged.  Capitalized terms used but not otherwise defined herein
shall have the meanings given such terms in the Plan.

         C. As  contemplated in Section 1(a) of the Plan, the Board of Directors
of the Company has appointed a committee  (the  "COMMITTEE")  to administer  the
Plan.

         D. To induce the  Grantee to enter into the  Employment  Agreement  and
continue  to perform  the  obligations  specified  therein  and promote the best
interests of the Company,  the  Committee  has decided to Grant an Option to the
Grantee under the Plan to purchase shares of Company Stock ("SHARES").

                                   AGREEMENT:

         NOW, THEREFORE, the parties to this Agreement,  intending to be legally
bound hereby, agree as follows:

1.  Grant of  Option.  Subject  to the  terms and  conditions  set forth in this
Agreement and in the Plan, the Company hereby grants to the Grantee an Option to
purchase  277,889  Shares at an exercise  price of $3.68 per Share (which is the
Fair  Market  Value on the date of Grant,  being  equal to the mean of the final
"asked" and "bid" prices of the Shares on the date hereof, as fixed by the terms
of the Plan).  The Option shall become  exercisable in accordance with the terms
of Paragraph 2 below.  In accordance  with Section 5(g) of the Plan,  the Option
shall be treated as an  Incentive  Stock  Option  except to the extent  that the
aggregate  Fair  Market  Value of the  Shares as of the date of the  grant  with
respect to which  Incentive  Stock  Option is for the first time by the  Grantee
during any calendar year under the Plan exceeds $100,000, then the Option, as to
such excess, shall be treated as a Nonqualified Stock Option.




2.  Exercisability  of  Option.  The  number of Shares in  respect  of which the
Grantee  shall be  permitted  to  exercise  the Option  shall be  determined  by
reference  to the dates  (each a  "VESTING  DATE")  fixed in the table set forth
below, provided that: (a) exercisability of Shares is cumulative;  and (b) there
must not have  occurred  a  termination  of the  Grantee's  employment  with the
Company (the "EMPLOYMENT  RELATIONSHIP")  for any reason whatsoever (the date of
such termination being hereinafter  referred to as the "TERMINATION DATE") prior
to a Vesting  Date in order for the Option to be  exercisable  in respect of the
Shares indicated opposite that Vesting Date:

     Vesting Date         Additional Shares for Which the Option is Exercisable
     ------------         -----------------------------------------------------
     January 31, 2006                       69,472.29
     January 31, 2007                       69,472.29
     January 31, 2008                       69,472.29
     January 31, 2009                       69,472.29

3. Term of Option.

         (a) The Option shall be exercisable for a term commencing with the Date
of  Grant  and  ending  on the  earlier  of (i)  January  31,  2010 or (ii)  the
termination  of the Plan,  unless the Option is terminated at an earlier date in
accordance with the provisions of this Agreement or the Plan.

         (b)  Any  portion  of  the  Option  that  is  not  exercisable  on  the
Termination Date shall terminate on that date.

         (c)  The  Option,  to  the  extent  exercisable,   shall  automatically
terminate  upon  the  earlier  of (x) the  expiration  of the  period  fixed  in
Paragraph 3(a), above, or (y) the first to occur of any of the following events:

                  (i) Subject to clause (v) below,  the expiration of the 90 day
         period  following the  Termination  Date, if the termination is for any
         reason  other  than the  Disability  of the  Grantee,  his death or for
         Cause.

                  (ii) Subject to clause (v) below,  the  expiration  of the one
         (1) year period after the Termination Date, to the extent the Option is
         then unvested, if the termination of the Employment Relationship was on
         account of the Grantee's Disability.

                  (iii)  The  expiration  of the one (1) year  period  after the
         Termination  Date, if the reason for the  termination of the Employment
         Relationship was on account of the Grantee's death.

                  (iv)  The   Termination   Date,  if  the  termination  of  the
         Employment Relationship was for Cause.

                  (v) The  provisions  of  clauses  (i) and  (ii)  above  to the
         contrary  notwithstanding,  if the  Grantee  engages  in  conduct  that
         constitutes   Cause  after  the  Termination  Date,  the  Option  shall
         immediately  terminate to the extent then  unexercised  (regardless  of
         vesting).

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         (d) In accordance with Section  5(e)(ii) of the Plan, if the provisions
of either clause (iv) or clause (v) of Paragraph 3(c) applied to the termination
of the Option, the Grantee shall automatically forfeit all Shares underlying any
exercised  portion of the Option for with the Company has not yet  delivered the
share certificates, upon refund by the Company of the exercise price paid by the
Grantee for such Shares.

4. Exercise Procedures.

         (a) Subject to the provisions of Paragraphs 2 and 3 above,  the Grantee
may exercise part or all of the exercisable  portion of the Option by giving the
Committee  written  notice of intent to exercise in the manner  provided in this
Agreement,  specifying  the  number of  Shares  as to which the  Option is to be
exercised. On the delivery date, the Grantee shall pay the exercise price (i) in
cash,  (ii) with the  approval of the  Committee,  by  delivering  Shares of the
Company which shall be valued at their fair market value on the date of delivery
(such valuation to be determined in the manner fixed in the Plan), (iii) payment
through a broker in accordance with procedures  permitted by Regulation T of the
Federal Reserve Board or (iv) by such other method as the Committee may approve,
provided that the Committee may, in its absolute discretion, impose from time to
time  such  limitations  as it deems  appropriate  on the use of  Shares  of the
Company to exercise the Option.

         (b) The  obligation  of the Company to deliver  Shares upon exercise of
the Option shall be subject to all applicable  laws,  rules, and regulations and
such  approvals by  governmental  agencies as may be deemed  appropriate  by the
Committee,  including  such actions as Company  counsel shall deem  necessary or
appropriate to comply with relevant securities laws and regulations. The Company
may require  that the Grantee (or other person  exercising  the Option after the
Grantee's  death)  represent  that the  Grantee  is  purchasing  Shares  for the
Grantee's own account and not with a view to or for sale in connection  with any
distribution of the Shares, or such other  representation as the Committee deems
appropriate.  All  obligations  of the  Company  under this  Agreement  shall be
subject  to the  rights  of the  Company  as set  forth in the Plan to  withhold
amounts  required  to be  withheld  for any  taxes,  if  applicable.  Subject to
Committee approval, in its absolute discretion, the Grantee may elect to satisfy
any income tax withholding  obligation of the Company with respect to the Option
by having  Shares  withheld  up to an amount  that does not exceed  the  minimum
applicable  withholding tax rate for federal  (including FICA),  state and local
tax liabilities.

5. Restrictions on Transfer of Shares.  In addition to the restrictions  imposed
by the Plan on the  transferability  of the Shares  acquired by an the Grantee's
exercise of the Option granted hereby, without the prior consent of the Company,
for so long as the Company is not a  "Reporting  Company"  within the meaning of
the Exchange Act of 1934, as amended,  the Grantee shall make no transfer of the
Shares (a) for a period of five (5) years  following the date of this  Agreement
and (b) thereafter, to any competitor of the Company.

6. Change of  Control.  The  provisions  of the Plan  applicable  to a Change of
Control shall apply to the Option, and, in the event of a Change of Control, the
Committee may take such actions as it deems appropriate pursuant to the Plan.

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7. Restrictions on Exercise. Only the Grantee may exercise the Option during the
Grantee's  lifetime  and,  after  the  Grantee's  death,  the  Option  shall  be
exercisable  (subject to the  limitations  specified  in the Plan) solely by the
legal representatives of the Grantee, or by the person who acquires the right to
exercise the Option by will or by the laws of descent and  distribution,  to the
extent that the Option is exercisable pursuant to this Agreement.

8. Grant  Subject to Plan  Provisions.  This grant is made pursuant to the Plan,
the terms of which are  incorporated  herein by  reference,  and in all respects
shall be interpreted in accordance  with the Plan. The grant and exercise of the
Option  are  subject  to the  provisions  of the  Plan  and to  interpretations,
regulations and determinations concerning the Plan established from time to time
by the Committee in accordance with the provisions of the Plan,  including,  but
not limited to, provisions pertaining to (i) rights and obligations with respect
to withholding  taxes,  (ii) the  registration,  qualification or listing of the
Shares,   (iii)  changes  in  capitalization  of  the  Company  and  (iv)  other
requirements  of  applicable  law.  The  Committee  shall have the  authority to
interpret  and  construe the Option  pursuant to the terms of the Plan,  and its
decisions shall be conclusive as to any questions arising hereunder.

9. No Employment or Other Rights.  The grant of the Option shall not confer upon
the  Grantee  any right to be  retained  by or in the  employ or  service of the
Company  and shall not  interfere  in any way with the right of the  Company  to
terminate  the  Grantee's  employment  or service at any time.  The right of the
Company to terminate at will the Grantee's employment or service at any time for
any reason is specifically reserved.

10. No  Shareholder  Rights.  Neither the  Grantee,  nor any person  entitled to
exercise the Grantee's  rights in the event of the Grantee's  death,  shall have
any of the rights and  privileges  of a  shareholder  with respect to the Shares
subject to the Option,  until  certificates for Shares have been issued upon the
exercise of the Option.

11. Assignment and Transfers. The rights and interests of the Grantee under this
Agreement may not be sold, assigned, encumbered or otherwise transferred except,
in the event of the death of the Grantee,  by will or by the laws of descent and
distribution.  In the event of any attempt by the Grantee to  alienate,  assign,
pledge,  hypothecate, or otherwise dispose of the Option or any right hereunder,
except as  provided  for in this  Agreement,  or in the event of the levy or any
attachment,  execution or similar  process  upon the rights or interests  hereby
conferred,  the Company may terminate  the Option by notice to the Grantee,  and
the Option and all rights  hereunder shall  thereupon  become null and void. The
rights and  protections of the Company  hereunder shall extend to any successors
or  assigns of the  Company  and to the  Company's  parents,  subsidiaries,  and
affiliates.  This Agreement may be assigned by the Company without the Grantee's
consent.

12.  Applicable Law. The validity,  construction,  interpretation  and effect of
this  instrument  shall be governed by and construed in accordance with the laws
of the  State  of  Florida,  without  giving  effect  to the  conflicts  of laws
provisions thereof.

13. Notice.  Any notice to the Company  provided for in this instrument shall be
addressed to the Company in care of the Chief Executive Officer at the Company's
principal executive offices, and any notice to the Grantee shall be addressed to

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such Grantee at the current  address shown on the payroll of the Company,  or to
such other address as the Grantee may  designate to the Company in writing.  Any
notice shall be  delivered  by hand,  sent by telecopy or enclosed in a properly
sealed  envelope  addressed as stated above,  registered and deposited,  postage
prepaid,  in a post office  regularly  maintained  by the United  States  Postal
Service.

14. Counterparts. This Agreement may be signed in any number of counterparts and
by facsimile signature, each of which shall be deemed to be an original, and all
of which taken together shall be deemed to be one and the same instrument.

15. Complete Understanding. This Agreement, together with the Plan, contains the
entire  agreement  of the  parties  relating to the  subject  matter  hereof and
supersedes all prior agreements and  understanding  with respect to such subject
matter,  and the parties  hereto  have made no  agreements,  representations  or
warranties  relating to the subject matter of this  Agreement  which are not set
forth herein, provided that the Parties are parties to the Employment Agreement.
Nothing contained in this Agreement shall be construed to limit or affect in any
manner or to any extent the restrictions or prohibitions  that are applicable to
the Grantee under the Employment  Agreement or the duration thereof.  Similarly,
except as expressly provided  otherwise in this Agreement,  nothing contained in
the Employment  Agreement shall be construed to limit or affect in any manner or
to any  extent the  restrictions  or  prohibitions  that are  applicable  to the
Grantee under this Agreement.



                            [Signature Page Follows]

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         IN WITNESS WHEREOF, the Company has caused a duly authorized officer to
execute this Agreement,  and the Grantee has executed this Agreement,  effective
as of the Date of Grant.


THE COMPANY:                           GRANTEE:

DYADIC INTERNATIONAL, INC.


By: /s/ Mark A. Emalfarb               Accepted:  /s/ Wayne Moor
   --------------------------                   --------------------------
    President                                     Wayne Moor


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