Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We have issued our report dated March 30, 2021 on the consolidated financial statements of Dyadic International, Inc. and Subsidiaries included in its Annual Report (Form 10-K) for the year ended December 31, 2020, filed with the Securities and Exchange Commission, which are incorporated by reference in this Registration Statement. We consent to the incorporation by reference in the Registration Statement of the aforementioned report.

Mayer Hoffman McCann P.C.

Clearwater, Florida

August 12, 2021