Amyris Welcomes Proposed Change of Control in Its Sugarcane Supplier in Brazil

Amyris Welcomes Proposed Change of Control in Its Sugarcane Supplier in Brazil

Tonon Group's Acquisition of the Paraiso Sugarcane Mill Strengthens Amyris's
Ability to Secure Sustainable Feedstock for Biofene Production

EMERYVILLE, Calif., March 21, 2013 (GLOBE NEWSWIRE) -- Amyris, Inc.
(Nasdaq:AMRS), a leading renewable chemicals and fuels company, welcomed the
announcement that Tonon Bioenergia, a Brazilian agro-industrial group with
growing investments in the sugarcane industry, has signed a contract to
acquire the Paraiso Bioenergia sugarcane mill, which supplies feedstock to
Amyris's farnesene production unit in Brotas, Brazil.

"Tonon Group's proposed acquisition of the sugarcane feedstock supplier of our
Biofene® plant underscores the confidence in our business model and our
ability to add value to the Brazilian sugarcane industry with renewable fuels
and chemicals," said Paulo Diniz, President of Amyris Brasil. "While this
change of control does not affect our operations in Brotas, we are pleased
with the financial strength and growth strategy of the Tonon Group as well as
their ability to secure additional sugarcane syrup to support our growth,"
Diniz added.

"Amyris's successful operations and strategic relationship were important
factors in our decision to acquire the Paraiso sugarcane mill," said Rodrigo
Aguiar, Chief Executive Officer of Tonon Bioenergia. "This acquisition
represents an important element of Tonon's growth strategy, building on our
two existing sugarcane mills in Brazil," Aguiar concluded.

In December 2012, Amyris successfully began production of Biofene, Amyris's
brand of renewable farnesene, a long-chain branched hydrocarbon, at its Brotas
facility. Product shipments from the Brotas plants began in late January and
have continued according to plan.

About Amyris, Inc.

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 hydrocarbon 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 expansion of Amyris's production in Brazil.
More information about Amyris is available at

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 Tonon Group's completion of an
acquisition of the Paraíso Bioenergia sugarcane mill, prospects for and growth
of Amyris's production plant at Brotas, and the ability to secure additional
sugarcane syrup) 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 or
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 9, 2012. 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, Biofene and No Compromise are trademarks or registered trademarks of
Amyris, Inc.This press release also contains trademarks of other businesses
that are the property of their respective owners.

CONTACT: Media Contacts
         Joel Velasco
         +1 (510) 597-5577

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