Press Releases

Jupiter, Fla., May 2/PR Newswire-First Call/ — Dyadic International, Inc. (OTC Pink: DYAI), a global biotechnology company, today announced that it will release financial results for the first quarter ended March 31, 2011 on Thursday, May 5, 2011 before market open to be followed by a conference call at 11:00 a.m. Eastern Time.

The conference call may be accessed by dialing 888-254-2817 (domestic) or 913-312-1516 (international) five to ten minutes prior to start time and providing the passcode 7322152.

ABOUT DYADIC

Dyadic is a global biotechnology company that uses its patented and proprietary technologies for the discovery, development, manufacture and sale of enzyme and protein products for the bioenergy, biopharmaceutical and industrial enzyme industries. Please visit Dyadic’s website at www.dyadic.com.

CAUTIONARY STATEMENT FOR FORWARD-LOOKING STATEMENTS

Certain statements contained in this press release are forward- looking statements. These forward-looking statements involve risks and uncertainties that could cause Dyadic’s actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Except as required by law, Dyadic expressly disclaims any intent or obligation to update any forward-looking statements.

CONTACT:

Dyadic International, Inc.

Adam J. Morgan, Esq.

Vice President General Counsel & Business Development

Phone: 561-743-8333

Email: amorgan@dyadic.com