Unlock your plant's full potential

At IFF, we know yeast blends are often greater than the sum of their parts. We see synergy.

Our SYNERXIA® Gemstone Collection is designed to optimize performance in biofuel production, empowering ethanol producers with the flexibility to switch seamlessly between yeasts or yeast blends to meet the needs of the moment. Powered by our XCELIS® AI predictive modeling capabilities, the SYNERXIA® Gemstone Collection will help you achieve the perfect combination of fermentation yield, speed, and robustness to unlock your plant’s full potential.

The right yeasts, at the right time, for the right purpose. That’s the SYNERXIA® Gemstone Collection difference.

Get to know the SYNERXIA® Gemstone Collection

Find your ideal solution with the SYNERXIA® Gemstone Collection:


Maximize plant throughput

Our fastest yeast, designed to accelerate your production process.


Our most robust yeast

Delivers a powerful combination of yield and glucoamylase expression.


The answer for high yield yeast

Our highest yielding yeasts, offering strong robustness with minimal by-products.

How IFF supports your success

At IFF, we prioritize our partners’ performance in the fuel ethanol industry. Our XCELIS® Ethanol Solutions platform, comprising the SYNERXIA® Gemstone Collection and our proprietary XCELIS® AI predictive modeling tool, delivers innovative, sustainable and data-driven solutions to help you excel.

Understanding your challenges

Successful ethanol fermentation means managing a range of stresses that can all impact yeast growth and overall yield. Our yeast blending capabilities deliver ultimate flexibility, helping our customers achieve the ideal combination of plant throughput rate, yield and robustness.

Taking your process to the next level

Whatever the objective, we have the right yeast solution for your specific process and market conditions. With the combined power of our SYNERXIA® Gemstone Collection and proprietary XCELIS® AI digital platform, we help make your fermentation goals a reality.

Let’s de-risk your decision making, together

At IFF, we believe a holistic approach to working with our partners drives success. With our proprietary XCELIS® AI digital platform, we accurately predict full-scale performance from small-scale experiments, helping us work with our partners to de-risk decision making and deliver innovation, expertise and support.

Innovation isn’t a word to us. It’s a commitment

Through our powerful XCELIS® AI digital platform, we leverage big data and predictive modeling to make ongoing improvements to plant efficiency. Pair this with our rigorous yeast breeding and selection program, and it’s easy to see how we consistently deliver real value for our partners.

Your process, your unique solutions

From equipment failures to shifting margins, today’s ethanol producers face a range of challenges that can impact processes and yeast performance. Our smart approach to yeast blending allows our customers to find the perfect combination of speed, yield and robustness to get the best results from their specific operations.

Lee Robinson, Application Scientist, Grain Processing, explores the key challenges facing today’s ethanol producers, and the solutions for real success.


Discover the full potential of our powerful yeast solutions to transform your operations in our SYNERXIA® Gemstone Collection brochure.

Connect with us
Contact IFF Grain Processing

Get in touch to learn how our XCELIS® Ethanol Solutions platform can help you get more profitability from your plant.

Contact Us

Get in touch to learn how our XCELIS® Ethanol Solutions platform can help you get more profitability from your plant.

Keep exploring XCELIS® solutions:


Flexible front-end solutions for increased efficiencies in throughput and yield.

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Saccharification & Fermentation

Improve yield and consistency while maximizing output with our high-performing saccharification and fermentation products.

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Additives that improve operational efficiency and move your business forward by accelerating fermentation and increasing yields.

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Whatever your end-goal, unlock better biofuel production through yeast fermentation with our diverse portfolio of yeasts and yeast blends.

Find out more