DYADIC INTERNATIONAL, INC.

                            INDEMNIFICATION AGREEMENT

      This Indemnification Agreement ("Agreement") is made as of the 26th day of
April, 2005, by and between DYADIC  INTERNATIONAL,  INC., a Delaware corporation
(the "Company"), and Harry Rosengart ("Indemnitee").

                                    RECITALS:

      A. The Company and Indemnitee recognize the significant cost of directors'
and officers'  liability insurance and the general reductions in the coverage of
such insurance.

      B. The Company and Indemnitee  further recognize the substantial  increase
in  corporate  litigation  in general,  subjecting  officers  and  directors  to
expensive  litigation  risks  at the  same  time as the  coverage  of  liability
insurance has been severely limited.

      C. The  Company  desires to attract  and  retain  the  services  of highly
qualified individuals, such as Indemnitee, to serve as officers and directors of
the Company and to indemnify  its  officers and  directors so as to provide them
with the maximum protection permitted by law.

                                   AGREEMENT:

      NOW, THEREFORE,  in consideration for Indemnitee's  services as an officer
or director of the Company, the Company and Indemnitee hereby agree as follows:

      1. INDEMNIFICATION.

            (a) Third Party Proceedings.  The Company shall indemnify Indemnitee
if  Indemnitee  is or was a party  or is  threatened  to be made a party  to any
threatened,  pending or completed  action,  suit,  proceeding or any alternative
dispute  resolution  mechanism,  whether  civil,  criminal,   administrative  or
investigative (other than an action by or in the right of the Company) by reason
of the fact that Indemnitee is or was a director,  officer, employee or agent of
the Company,  or any  subsidiary  of the Company,  or by reason of the fact that
Indemnitee  is or was  serving  at the  request of the  Company  as a  director,
officer, employee or agent of another corporation,  partnership,  joint venture,
trust  or  other  enterprise,  against  expenses  (including  attorneys,  fees),
judgments,  fines and amounts paid in settlement (if such settlement is approved
in advance by the Company,  which approval shall not be  unreasonably  withheld)
actually and reasonably  incurred by Indemnitee in connection  with such action,
suit or proceeding if Indemnitee acted in good faith and in a manner  Indemnitee
reasonably  believed  to be in or not  opposed  to  the  best  interests  of the
Company,  and,  with  respect  to any  criminal  action  or  proceeding,  had no
reasonable cause to believe Indemnitee's  conduct was unlawful.  The termination
of any action, suit or proceeding by judgment, order, settlement, conviction, or
upon a plea of nolo contendere or its equivalent, shall not, of itself, create a
presumption  that  Indemnitee  did not act in good  faith and in a manner  which
Indemnitee  reasonably believed to be in or not opposed to the best interests of
the  Company,  and,  with  respect to any  criminal  action or  proceeding,  had
reasonable cause to believe that Indemnitee's conduct was unlawful.


            (b) Proceedings By or in the Right of the Company. The Company shall
indemnify Indemnitee if Indemnitee was or is a party or is threatened to be made
a party to any  threatened,  pending  or  completed  action or suit by or in the
right of the Company or any  subsidiary  of the Company to procure a judgment in
its favor by reason of the fact that  Indemnitee is or was a director,  officer,
employee or agent of the Company, or any subsidiary of the Company, or by reason
of the fact that Indemnitee is or was serving at the request of the Company as a
director, officer, employee or agent of another corporation,  partnership, joint
venture, trust or other enterprise, against expenses (including attorneys, fees)
and, to the fullest extent permitted by law, amounts paid in settlement actually
and  reasonably  incurred  by  Indemnitee  in  connection  with the  defense  or
settlement  of such  action or suit if  Indemnitee  acted in good faith and in a
manner  Indemnitee  reasonably  believed  to be in or not  opposed  to the  best
interests  of the  Company,  except  that no  indemnification  shall  be made in
respect of any  claim,  issue or matter as to which  Indemnitee  shall have been
adjudged  to be liable to the  Company  unless and only to the  extent  that the
Court of  Chancery of the State of Delaware or the court in which such action or
suit was brought shall determine upon application that, despite the adjudication
of liability  but in view of all the  circumstances  of the case,  Indemnitee is
fairly and reasonably entitled to indemnity for such expenses which the Court of
Chancery of the State of Delaware or such other court shall deem proper.

            (c) Mandatory Payment of Expenses. To the extent that Indemnitee has
been  successful  on the merits or otherwise  in defense of any action,  suit or
proceeding  referred  to in  Subsections  (a) and (b) of this  Section  1, or in
defense of any claim,  issue or matter therein,  Indemnitee shall be indemnified
against expenses (including attorneys' fees) actually and reasonably incurred by
Indemnitee in connection therewith.

      2. EXPENSES; INDEMNIFICATION PROCEDURE.

            (a) Advancement of Expenses.  The Company shall advance all expenses
incurred by Indemnitee in connection with the investigation, defense, settlement
or appeal of any civil or criminal  action,  suit or  proceeding  referenced  in
Section 1(a) or (b) hereof (but not amounts  actually  paid in settlement of any
such action,  suit or proceeding).  Indemnitee  hereby  undertakes to repay such
amounts  advanced  only if,  and to the  extent  that,  it shall  ultimately  be
determined  that  Indemnitee is not entitled to be indemnified by the Company as
authorized  hereby.  The  advances  to be made  hereunder  shall  be paid by the
Company to Indemnitee  within thirty (30) days  following  delivery of a written
request therefor by Indemnitee to the Company.

            (b)  Notice/Cooperation  by  Indemnitee.   Indemnitee  shall,  as  a
condition  precedent to his right to be indemnified  under this Agreement,  give
the Company  notice in writing as soon as  practicable of any claim made against
Indemnitee  for  which  indemnification  will or  could  be  sought  under  this
Agreement.  Notice to the  Company  shall be directed  to the  President  of the
Company at the address  shown on the signature  page of this  Agreement (or such
other address as the Company shall designate in writing to  Indemnitee).  Notice
shall be deemed  received three business days after the date  postmarked if sent
by domestic certified or registered mail, properly addressed, five business days
if sent by airmail to a country outside of North America; otherwise notice shall
be deemed  received when such notice shall  actually be received by the Company.
In addition,  Indemnitee shall give the Company such information and cooperation
as it may reasonably require and as shall be within Indemnitee's power.


                                       2


            (c)  Procedure.  Any  indemnification  and advances  provided for in
Section 1 and this  Section 2 shall be made no later than thirty (30) days after
receipt of the written  request of Indemnitee.  If a claim under this Agreement,
under any  statute,  or under any  provision  of the  Company's  Certificate  of
Incorporation  or Bylaws providing for  indemnification,  is not paid in full by
the Company within thirty (30) days after a written  request for payment thereof
has first been  received by the  Company,  Indemnitee  may, but need not, at any
time thereafter bring an action against the Company to recover the unpaid amount
of the claim and, subject to Section 12 of this Agreement, Indemnitee shall also
be entitled to be paid for the expenses (including  attorneys' fees) of bringing
such  action.  It shall be a defense to any such  action  (other  than an action
brought to enforce a claim for expenses  incurred in connection with any action,
suit or proceeding in advance of its final  disposition) that Indemnitee has not
met the standards of conduct which make it permissible  under applicable law for
the Company to indemnify Indemnitee for the amount claimed. However,  Indemnitee
shall be entitled to receive interim payments of expenses pursuant to Subsection
2(a) unless and until such defense may be finally  adjudicated by court order or
judgment  from  which no  further  right of appeal  exists.  It is the  parties,
intention that if the Company contests  Indemnitee's  right to  indemnification,
the question of Indemnitee's right to indemnification  shall be for the court to
decide,  and  neither  the  failure  of the  Company  (including  its  Board  of
Directors,  any  committee  or subgroup of the Board of  Directors,  independent
legal  counsel,   or  its  stockholders)  to  have  made  a  determination  that
indemnification of Indemnitee is proper in the circumstances  because Indemnitee
has met the applicable  standard of conduct  required by applicable  law, nor an
actual  determination  by the  Company  (including  it Board of  Directors,  any
committee or subgroup of the Board of Directors,  independent legal counsel,  or
its  stockholders)  that  Indemnitee  has not met such  applicable  standard  of
conduct,  shall  create a  presumption  that  Indemnitee  has or has not met the
applicable standard of conduct.

            (d) Notice to  Insurers.  If, at the time of the receipt of a notice
of a claim pursuant to section 2(b) hereof, the Company has director and officer
liability  insurance  in effect,  the Company  shall give  prompt  notice of the
commencement  of  such  proceeding  to  the  insurers  in  accordance  with  the
procedures set forth in the respective  policies.  The Company shall  thereafter
take all necessary or desirable  action to cause such insurers to pay, on behalf
of the  Indemnitee,  all  amounts  payable  as a result  of such  proceeding  in
accordance with the terms of such policies.

            (e)  Selection  of  Counsel.  In the  event  the  Company  shall  be
obligated  under  Section  2(a)  hereof to pay the  expenses  of any  proceeding
against Indemnitee, the Company, if appropriate, shall be entitled to assume the
defense of such  proceeding,  with  counsel  approved  by  Indemnitee,  upon the
delivery  to  Indemnitee  of  written  notice of its  election  to do so.  After
delivery  of  such  notice,  approval  of such  counsel  by  Indemnitee  and the
retention  of such  counsel by the  Company,  the Company  will not be liable to
Indemnitee under this Agreement for any fees of counsel subsequently incurred by
Indemnitee  with respect to the same  proceeding,  provided that (i)  Indemnitee
shall  have  the  right  to  employ  his  counsel  in  any  such  proceeding  at
Indemnitee's  expense;  and (ii) if (A) the  employment of counsel by Indemnitee
has been  previously  authorized  by the  Company,  (B)  Indemnitee  shall  have
reasonably  concluded  that  there may be a conflict  of  interest  between  the
Company and  Indemnitee in the conduct of any such  defense,  or (C) the Company
shall  not,  in fact,  have  employed  counsel  to assume  the  defense  of such
proceeding,  then the fees and expenses of Indemnitee's  counsel shall be at the
expense of the Company.


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      3. ADDITIONAL INDEMNIFICATION RIGHTS; NONEXCLUSIVITY.

            (a) Scope.  Notwithstanding  any other  provision of this Agreement,
the Company  hereby  agrees to indemnify the  Indemnitee  to the fullest  extent
permitted by law,  notwithstanding that such indemnification is not specifically
authorized by the other provisions of this Agreement,  the Company's Certificate
of  Incorporation,  the  Company's  Bylaws  or by  statute.  In the event of any
change,  after the date of this Agreement,  in any applicable law,  statute,  or
rule which expands the right of a Delaware  corporation to indemnify a member of
its board of directors or an officer,  such changes shall be, ipso facto, within
the  purview  of  Indemnitee's  rights  and  Company's  obligations,  under this
Agreement.  In the event of any change in any  applicable  law,  statute or rule
which narrows the right of a Delaware  corporation  to indemnify a member of its
board of  directors or an officer,  such  changes,  to the extent not  otherwise
required by such law, statute or rule to be applied to this Agreement shall have
no effect on this Agreement or the parties' rights and obligations hereunder.

            (b) Nonexclusivity.  The indemnification  provided by this Agreement
shall not be deemed  exclusive of any rights to which Indemnitee may be entitled
under the Company's Certificate of Incorporation, its Bylaws, any agreement, any
vote of stockholders or disinterested  Directors, the General Corporation Law of
the State of Delaware, or otherwise,  both as to action in Indemnitee's official
capacity and as to action in another  capacity  while  holding such office.  The
indemnification  provided under this  Agreement  shall continue as to Indemnitee
for any action taken or not taken while serving in an indemnified  capacity even
though he may have  ceased to serve in such  capacity at the time of any action,
suit or other covered proceeding.

      4. PARTIAL INDEMNIFICATION.  If Indemnitee is entitled under any provision
of this Agreement to indemnification by the Company for some or a portion of the
expenses,  judgments,  fines or penalties actually or reasonably incurred by him
in the  investigation,  defense,  appeal or  settlement of any civil or criminal
action, suit or proceeding,  but not, however, for the total amount thereof, the
Company  shall  nevertheless  indemnify  Indemnitee  for  the  portion  of  such
expenses, judgments, fines or penalties to which Indemnitee is entitled.

      5. MUTUAL  ACKNOWLEDGEMENT.  Both the Company and  Indemnitee  acknowledge
that in certain instances,  Federal law or applicable public policy may prohibit
the Company from indemnifying its directors and officers under this Agreement or
otherwise.   Indemnitee  understands  and  acknowledges  that  the  Company  has
undertaken or may be required in the future to undertake with the Securities and
Exchange  Commission  to submit the  question of  indemnification  to a court in
certain  circumstances  for a determination  of the Company's right under public
policy to indemnify Indemnitee.


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      6. OFFICER AND DIRECTOR LIABILITY INSURANCE.  The Company shall, from time
to time, make the good faith determination  whether or not it is practicable for
the  Company  to obtain and  maintain a policy or  policies  of  insurance  with
reputable  insurance  companies  providing  the  officers  and  directors of the
Company with coverage for losses from wrongful  acts, or to ensure the Company's
performance of its indemnification obligations under this Agreement. Among other
considerations,  the Company  will weigh the costs of obtaining  such  insurance
coverage  against the protection  afforded by such coverage.  In all policies of
director  and  officer  liability  insurance,  Indemnitee  shall  be named as an
insured in such a manner as to provide  Indemnitee  the same rights and benefits
as are accorded to the most  favorably  insured of the Company's  directors,  if
Indemnitee is a director;  or of the Company's officers,  if Indemnitee is not a
director of the Company but is an officer.  Notwithstanding  the foregoing,  the
Company shall have no  obligation  to obtain or maintain  such  insurance if the
Company  determines  in  good  faith  that  such  insurance  is  not  reasonably
available,  if the premium costs for such insurance are  disproportionate to the
amount of coverage  provided,  if the  coverage  provided by such  insurance  is
limited by exclusions so as to provide an insufficient benefit, or if Indemnitee
is covered by similar  insurance  maintained  by a  subsidiary  or parent of the
Company.

      7. SEVERABILITY. Nothing in this Agreement is intended to require or shall
be construed  as requiring  the Company to do or fail to do any act in violation
of applicable law. The Company's inability,  pursuant to court order, to perform
its  obligations  under this  Agreement  shall not  constitute  a breach of this
Agreement.  The provisions of this  Agreement  shall be severable as provided in
this Section 7. If this  Agreement or any portion hereof shall be invalidated on
any  ground by any  court of  competent  jurisdiction,  then the  Company  shall
nevertheless indemnify Indemnitee to the full extent permitted by any applicable
portion of this Agreement that shall not have been invalidated,  and the balance
of this Agreement not so invalidated shall be enforceable in accordance with its
terms.

      8. EXCEPTIONS. Any other provision herein to the contrary notwithstanding,
the Company shall not be obligated pursuant to the terms of this Agreement:

            (a) Claims Initiated by Indemnitee. To indemnify or advance expenses
to  Indemnitee  with  respect  to  proceedings  or claims  initiated  or brought
voluntarily  by  Indemnitee  and not by way of defense,  except with  respect to
proceedings  brought to  establish or enforce a right to  indemnification  under
this  Agreement  or any other  statute or law or  otherwise  as  required  under
Section 145 of the Delaware General Corporation Law, but such indemnification or
advancement  of expenses may be provided by the Company in specific cases if the
Board of Directors has approved the initiation or bringing of such suit; or

            (b) Lack of Good Faith.  To  indemnify  Indemnitee  for any expenses
incurred  by the  Indemnitee  with  respect  to  any  proceeding  instituted  by
Indemnitee  to enforce or  interpret  this  Agreement,  if a court of  competent
jurisdiction  determines  that  each  of the  material  assertions  made  by the
Indemnitee in such proceeding was not made in good faith or was frivolous; or


                                       5


            (c)  Insured  claims.  To  indemnify   Indemnitee  for  expenses  or
liabilities of any type whatsoever  (including,  but not limited to,  judgments,
fines,  ERISA excise taxes or penalties,  and amounts paid in settlement)  which
have been paid directly to Indemnitee by an insurance  carrier under a policy of
officers' and directors' liability insurance maintained by the Company.

            (d) Claims Under Section 16(b). To indemnify Indemnitee for expenses
and the payment of profits  arising from the purchase and sale by  Indemnitee of
securities in violation of Section 16(b) of the Securities Exchange Act of 1934,
as amended, or any similar successor statute.

      9. CONSTRUCTION OF CERTAIN PHRASES.

            (a) For  purposes of this  Agreement,  references  to the  "Company"
shall  include,  in  addition  to the  resulting  corporation,  any  constituent
corporation   (including  any  constituent  of  a  constituent)  absorbed  in  a
consolidation  or merger which, if its separate  existence had continued,  would
have had power and authority to indemnify its directors, officers, and employees
or agents,  so that if  Indemnitee  is or was a director,  officer,  employee or
agent of such  constituent  corporation,  or is or was serving at the request of
such  constituent  corporation  as a  director,  officer,  employee  or agent of
another  corporation,  partnership,  joint venture,  trust or other  enterprise,
Indemnitee  shall  stand in the  same  position  under  the  provisions  of this
Agreement  with respect to the resulting or surviving  corporation as Indemnitee
would  have  with  respect  to  such  constituent  corporation  if its  separate
existence had continued.

            (b)  For   purposes  of  this   Agreement,   references   to  "other
enterprises"  shall include employee benefit plans;  references to "fines" shall
include any excise  taxes  assessed on  Indemnitee  with  respect to an employee
benefit plan;  and  references to "serving at the request of the Company"  shall
include  any service as a  director,  officer,  employee or agent of the Company
which  imposes  duties on, or  involves  services  by, such  director,  officer,
employee or agent with respect to an employee benefit plan, its participants, or
beneficiaries;  and if Indemnitee acted in good faith and in a manner Indemnitee
reasonably  believed to be in the interest of the participants and beneficiaries
of an  employee  benefit  plan,  Indemnitee  shall be deemed to have  acted in a
manner "not opposed to the best interests of the Company" as referred to in this
Agreement.

      10.  COUNTERPARTS.   This  Agreement  may  be  executed  in  one  or  more
counterparts, each of which shall constitute an original.

      11.  SUCCESSORS  AND  ASSIGNS.  This  Agreement  shall be binding upon the
Company  and its  successors  and  assigns,  and shall  inure to the  benefit of
Indemnitee and Indemnitee's estate, heirs, legal representatives and assigns.

      12.  ATTORNEYS'  FEES.  In the  event  that any  action is  instituted  by
Indemnitee under this Agreement to enforce or interpret any of the terms hereof,
Indemnitee shall be entitled to be paid all court costs and expenses,  including
reasonable  attorneys' fees, incurred by Indemnitee with respect to such action,
unless as a part of such action, the court of competent jurisdiction  determines
that each of the  material  assertions  made by  Indemnitee  as a basis for such
action were not made in good faith or were frivolous.  In the event of an action
instituted by or in the name of the Company  under this  Agreement or to enforce
or interpret any of the terms of this Agreement, Indemnitee shall be entitled to
be paid all court costs and expenses,  including  attorneys'  fees,  incurred by
Indemnitee  in defense of such action  (including  with respect to  Indemnitee's
counterclaims  and cross claims made in such  action),  unless as a part of such
action the court determines that each of Indemnitee's  material defenses to such
action were made in bad faith or were frivolous.


                                       6


      13. NOTICE. All notices,  requests, demands and other communications under
this  Agreement  shall be in  writing  and  shall be  deemed  duly  given (i) if
delivered by hand and receipted for by the party addressee,  on the date of such
receipt, or (ii) if mailed by domestic certified or registered mail with postage
prepaid,  on the third  business day after the date  postmarked.  Addresses  for
notice to either party are as shown on the signature page of this Agreement,  or
as subsequently modified by written notice.

      14.  CONSENT TO  JURISDICTION.  The  Company  and  Indemnitee  each hereby
irrevocably  consent to the  jurisdiction of the courts of the State of Delaware
for all purposes in connection with any action or proceeding which arises out of
or relates to this  Agreement  and agree that any action  instituted  under this
Agreement shall be brought only in the state courts of the State of Florida.

      15. CHOICE OF LAW. This Agreement  shall be governed by and its provisions
construed in  accordance  with the laws of the State of Delaware,  as applied to
contracts between Delaware  residents entered into and to be performed  entirely
within Delaware without regard to the conflict of law principles thereof.

      16. PERIOD OF  LIMITATIONS.  No legal action shall be brought and no cause
of  action  shall  be  asserted  by or in  the  right  of  the  Company  against
Indemnitee,  Indemnitee's estate,  spouse, heirs, executors or personal or legal
representatives  after the  expiration  of two years from the date of accrual of
such cause of action,  and any claim or cause of action of the Company  shall be
extinguished and deemed released unless asserted by the timely filing of a legal
action  within such  two-year  period;  provided,  however,  that if any shorter
period of limitations is otherwise  applicable to any such cause of action, such
shorter period shall govern.

      17. SUBROGATION. In the event of payment under this Agreement, the Company
shall be  subrogated  to the  extent  of such  payment  to all of the  rights of
recovery of  Indemnitee,  who shall execute all documents  required and shall do
all acts that may be  necessary  to secure such rights and to enable the Company
effectively to bring suit to enforce such rights.

      18. AMENDMENT AND TERMINATION. No amendment, modification,  termination or
cancellation of this Agreement shall be effective unless it is in writing signed
by both the parties hereto. No waiver of any of the provisions of this Agreement
shall be deemed or shall  constitute  a waiver  of any other  provisions  hereof
(whether or not similar) nor shall such waiver constitute a continuing waiver.


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      19. INTEGRATION AND ENTIRE AGREEMENT. This Agreement sets forth the entire
understanding  between the parties hereto and supersedes and merges all previous
written  and  oral  negotiations,  commitments,  understandings  and  agreements
relating to the subject matter hereof between the parties hereto.

      IN WITNESS WHEREOF,  the parties hereto have executed this Agreement as of
the date first above written.

                                          DYADIC INTERNATIONAL, INC., a Delaware
                                          corporation


                                          By:
                                             -----------------------------------
                                             Mark A. Emalfarb
                                             Chief Executive Officer


                                          By:
                                             -----------------------------------
                                             Harry Rosengart


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