Dyadic gets U.S. patent for cellulose technology

March 27, 2014, Jupiter, Fla. – Dyadic International, Inc. announced
that it has been issued U.S. Patent No. 8,673,618 entitled, "Construction
of highly efficient cellulase compositions for enzymatic hydrolysis of
cellulose" by the United States Patent and Trademark Office
("USPTO").

This new patent provides broader intellectual property
rights relating to compositions and methods of developing and producing novel
enzymes, which efficiently convert different sources of plant biomass (e.g.
corn stover, wheat straw and bagasse) to fermentable sugars. These sugars can
be used in the production of advanced biofuels and bio-based chemicals.

Methods include processes for degrading plant material using
enzyme mixtures and specified enzyme combinations. Enzyme compositions are used
to break down specific components of plant biomass (e.g. cellulose,
hemi-cellulose, and lignin) into a variety of fermentable sugars.

In addition to claims covering the production of these
patented enzymes using Dyadic's C1 Expression System, a wide variety of
additional production methods are covered including bacteria, yeast, algae,
other fungi and plants.

Dyadic's President and CEO, Mark Emalfarb, stated,
"Plant biomass provide a plentiful source of potential energy in the form
of sugars that can be utilized to produce advanced biofuels and bio-based
chemicals. This latest patent further broadens our family of patents that
address the advanced biofuels and bio- based chemicals market. This latest
patent also expands our comprehensive intellectual property portfolio further
protecting our C1 Expression System, and the products derived therefrom. We
anticipate that broadening our rights for these applications will allow us to
further attract additional blue chip customers, partners, and
collaborators."

This patent is the fourteenth U.S. patent issued to Dyadic
adding to its portfolio of 41 international patents, 23 pending international
and 10 pending U.S. patent applications which cover various features of
Dyadic's proprietary technologies.