Amyris Continues Successful Commercialization

Amyris Continues Successful Commercialization

Amyris increased to 400 the number of São Paulo city buses running on a blend
                              of Diesel de Cana™

   In 2014, Amyris plans to produce its fragrance oil molecule from its own
manufacturing facility in Brazil, following recent successful scale up of its
               fragrance oil at specialty contract manufacturer

EMERYVILLE, Calif., Dec. 17, 2013 (GLOBE NEWSWIRE) -- Amyris, Inc.
(Nasdaq:AMRS) announced today that the number of São Paulo city buses using
Amyris Renewable Diesel, which is branded locally as Diesel de Cana™, has
increased to 400. Separately, Amyris announced it has successfully produced
its first fragrance oil for its partner Firmenich SA, a leading global flavors
and fragrances company. In 2014, building on the successful scale-up of
production at a specialty contract manufacturer, Amyris plans to produce this
fragrance oil at Amyris's own industrial fermentation plant, located near the
town of Brotas, São Paulo state in Brazil.

"From fuels to consumer care products, we continue to make progress on our
commercialization of No Compromise^® renewable products that meet our
customers' needs," said John Melo, President & CEO at Amyris. "We are not only
building on our existing fuels market opportunities but also expanding our
portfolio of renewable products, as we have shown with our successful
production of a fragrance oil, the third molecule we have taken from lab to
industrial scale following artemisinin and farnesene," added Melo.

Diesel de Cana Expansion in Brazil

At an event in Sao Paulo, Amyris is announcing, along with the São Paulo
Public Transportation Authority (SPTrans) and its industry partners, an
increase from 300 to 400 buses running on a blend of renewable diesel produced
from locally-grown sugarcane using Amyris breakthrough fermentation
technology. Also, the partners are announcing a trial of three buses that will
run on 100% Amyris Renewable Diesel over the coming months.

"We are pleased to increase our supply of Diesel de Cana in São Paulo, helping
bring the city closer to its goal of 100% renewable fuels in public transport
while reducing air pollution," said Adilson Liebsch, Commercial Director at
Amyris Brasil. "Our drop-in renewable fuel has been used commercially at
blends of 10-30% for two years and logged over 30 million kilometers to date.
Working with Mercedes-Benz, MAN and Volvo on a 100% Diesel de Cana trial, we
will build greater confidence in our fuel's quality and performance, paving
the way to expand our commercial efforts in other metropolitan areas
globally," added Liebsch.

The city of São Paulo has more than 15,000 buses consuming about 450 million
liters (118 million gallons) of diesel per year. Amyris's sugarcane-based
diesel is helping the city meet its goal of reducing fossil fuel use in the
public transit system. Under city law, São Paulo is working to reduce fossil
diesel use by ten percent every year through 2018.

Fragrance Oil Production Expected at Brotas in 2014

As anticipated during Amyris's prior quarter results call, the Company has
begun the production of its first fragrance oil at a specialty contract
manufacturing facility. Next year, building on the successful results of its
initial fragrance oil production and based on feedback from its partner,
Amyris plans to also produce this fragrance oil at its own Brotas production
facility. The Brotas biorefinery currently produces Biofene^®, Amyris's brand
of farnesene, a renewable hydrocarbon used for a range of applications.
Following planned improvements to the Brotas plant in early 2014, Amyris
expects to be able to produce both Biofene and a range of other fermentation
products, including its fragrance oils, at the plant.

"We have produced our first fragrance oil for our partner Firmenich who will
use it in its own formulations as well as supply it to some of its key
customers. With the knowledge we have gained from successful scale-up runs, we
plan to make modifications to our Brotas plant early next year that will allow
us to produce this fragrance oil at our own facility. We believe this will
help us increase volumes and lower our production costs, as well give us the
flexibility to produce multiple products to maximize the overall efficiency of
our Brotas operation," concluded Melo.

"Amyris has proven it can produce at scale our first collaboration fragrance
molecule using its innovative technology. This technology will enable
Firmenich to make differentiated perfume creations with unique renewable
ingredients. Our clients expect reliability of supply, cost innovation and
olfactive differentiation, all of which we think the move to Brotas will help
support," said Boet Brinkgreve, Group Vice president, Ingredients at

Earlier this year, Amyris announced an expansion of its collaboration with
Firmenich, with commercialization of its first fragrance molecule targeted for
early 2014. The two companies continue to collaborate on additional molecules
that Firmenich can market in the flavors and fragrances market. As detailed
previously, the parties will share in the economic value derived from the sale
of these ingredients.

About Amyris

Amyris is an integrated renewable products company focused on providing
sustainable alternatives to a broad range of petroleum-sourced products.
Amyris uses its industrial synthetic biology platform to convert plant sugars
into a variety of molecules -- flexible building blocks that can be used in a
wide range of products. Amyris's initial portfolio of commercial products is
based on Biofene®, Amyris's brand of renewable farnesene, a long-chain
hydrocarbon. Amyris is commercializing these products both as No Compromise®
renewable ingredients in cosmetics, flavors and fragrances, polymers,
lubricants and consumer products, and also as No Compromise renewable diesel
and jet fuel. Amyris Brasil Ltda., a subsidiary of Amyris, oversees the
establishment and commercialization of Amyris's production in Brazil.

Amyris Forward-Looking Statements

This release contains forward-looking statements, and any statements other
than statements of historical facts could be deemed to be forward-looking
statements. These forward-looking statements include, among other things,
statements regarding future events (such as benefits of renewable diesel,
development, production and commercialization of flavors and fragrances
molecules, the use of a new manufacturing facility to produce an new molecule,
expectations for a collaboration arrangement with a partner, and anticipated
benefits of production strategies) that involve risks and uncertainties. These
statements are based on management's current expectations and actual results
and future events may differ materially due to risks and uncertainties,
including those associated with any delays or failures in development,
production and commercialization of products, liquidity and ability to fund
capital expenditures, Amyris's reliance on third parties to achieve its goals,
and other risks detailed in the "Risk Factors" section of Amyris's quarterly
report on Form 10-Q filed on November 5, 2013. Amyris disclaims any obligation
to update information contained in these forward-looking statements whether as
a result of new information, future events, or otherwise.

Amyris, the Amyris logo, Biofene and No Compromise are trademarks or
registered trademarks of Amyris, Inc.

CONTACT: Amyris, Inc.
         Joel Velasco
         (510) 740-7481

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