Solutions · Yeast Product Storage
Dry yeast, yeast extract, and inactive yeast are sensitive to moisture and heat, and yeast extract powders are highly hygroscopic. PW Silo Systems reviews your yeast product with you and designs aluminum and stainless steel silos with the right discharge and hygienic design.
Yeast Storage at a Glance
A yeast silo stores dry yeast products – such as dry yeast, yeast extract powder, or inactive yeast – close to production for bakery, savory flavors, food, or feed. It protects the product from moisture and contamination and feeds it in a controlled way to dosing and mixing.
Yeast products react to moisture and heat, and yeast extract powders attract moisture strongly. Because yeast products are not yet on our tested list, we review your product data with you before we design the silo.
Why Yeast Is Demanding
Yeast products are sensitive, high-value ingredients. Their quality depends on how they are stored.
Dry yeast and yeast extract absorb moisture from the air – yeast extract cakes quickly.
Yeast products are sensitive to heat.
Food plants work to high hygiene standards.
In coated carbon steel silos, flaking paint and steel particles can end up in the yeast.
In funnel flow, yeast products can stay in the silo for a long time while fresh product passes through the center.
Food plants often handle several yeast products side by side – including allergen-relevant or specialty products.
Silo Materials
Aluminum and stainless steel silos are widely used for flour, sugar, starch, and other food ingredients. Both materials offer high corrosion resistance, good hygiene, and a long service life.
Carbon steel is not an option for us: its coating is the only protection against corrosion. Once it wears, paint particles and steel can get into the product. Which of our two materials fits your yeast silo depends on your product, your process, your cleaning requirements, and your site – we review it with you.
Your Yeast Silo System
Silo, discharge, blending, filtration, and safety equipment are engineered as one system. That means fewer interfaces for your team and components that are designed to work together.
Storage
Concentric mass-flow discharge without asymmetric flow zones – as standard, site-assembled, indoor, or multi-compartment silos.
Learn moreBlending
Gravity blending and homogenizing with four technologies, including PW ConeBlend with a hopper that is quick to clean.
Learn moreDischarge
Air fluidization for uniform discharge of poorly flowing products – prevents bridging and can be retrofitted to existing silos.
Learn moreDischarge
Vibration from unbalanced motors breaks up cohesive forces, resolves caking, and keeps the outlet clear.
Learn moreFiltration
Dust separation during filling and conveying, in a hygienic design for the food industry.
Learn moreSafety & Monitoring
Rupture discs or explosion vents for combustible dust, level measurement for reliable monitoring of the silo content.
Learn moreYeast Products
Yeast products are not on our tested list yet. Our silo systems are designed for nearly all free-flowing, granular, and powdered bulk solids – we review your yeast product with you before designing the silo.
Review with us
Dry yeast, instant yeast, active dry yeast
Dry yeast is granular and sensitive to moisture and heat. We review storage conditions with you.
Review with us
Yeast extract powder
Yeast extract powder is highly hygroscopic. Discharge aids and moisture protection are planned with you.
Review with us
Inactive yeast, nutritional yeast, yeast flakes
Inactive yeast is used in food and feed. We review your product data with you.
Review with us
Brewer’s yeast, dried brewer’s yeast
Dried brewer’s yeast is a by-product of brewing for food and feed. We review your product with you.
Also tested in our lab:
Send us your material data and we will review the right solution with you:
Material Check
Type in your product or any other bulk material to see whether it has already been tested in our lab. The list covers 287 bulk materials.
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Service in the U.S.
With more than 40 years of experience in silo engineering, we support your yeast silo project from the first design discussion to commissioning. We deliver to every U.S. state and install with our own qualified personnel.
FAQ
Answers to the questions plant managers, engineers, and buyers ask most often about storing yeast products in silos.
Dry yeast products can generally be stored in a properly designed silo. Yeast products are not on our tested list yet – we review these products with you based on your material data:
Fresh (compressed) yeast is a different product with its own requirements – we review them with you.
A closed silo in aluminum or stainless steel protects the product from outside moisture. Temperature and site requirements are reviewed with you before we design the silo.
Both. Aluminum and stainless steel silos are widely used for yeast and other food ingredients because they offer high corrosion resistance, good hygiene, and a long service life. Which material fits your project depends on your product, your process, your cleaning requirements, and your site. We review the options with you.
In a carbon steel silo, the coating is the only protection against corrosion. If it wears or flakes off, paint particles and steel can end up in your yeast. That is why we build silos exclusively in aluminum and stainless steel.
In mass flow, the entire silo content moves downward when material is discharged – not just a channel in the center. Your yeast leaves the silo in the order it came in (first in, first out), and no product is left behind in dead zones where it could age or cake. Our PW StoreLine silos are designed for concentric mass-flow discharge without asymmetric flow zones.
Fine yeast dust is combustible, and many bulk solids carry an explosion risk. For combustible bulk solids we supply explosion-protected silos designed in accordance with applicable codes and regulations. Venting devices – rupture discs or explosion vents – are selected for your silo, your product, and your application. Integrated filters and dust collectors reduce dust during filling and conveying.
Hygiene starts with the materials: aluminum and stainless steel offer good hygiene and corrosion resistance. In addition, our flat-roof designs support high cleanliness standards, PW SpeedBlow uses high air flow for cleaning, and the PW ConeBlend blending silo has a hopper that is quick and easy to clean – well suited to frequent product changes.
The right size depends on your daily consumption, delivery intervals, the number of products, and the space available at your site. PW StoreLine silos are available in a wide range of sizes and diameters, and silos too large for road transport are assembled on site. We size the system with you – without oversized investment.
Yes. We deliver to every U.S. state and support your project with silo transport, field assembly, silo installation and supervision, and site relocation of existing systems.
Tell us about your products, required storage capacity, how the silo is filled and discharged, and your site conditions. Based on this, we work out the material, silo type, and configuration with you and send you a detailed quote.
Your Project
Whether you need a single yeast silo, several silos for different products, or a complete system with blending and discharge, tell us about your requirements. We'll develop a solution that fits your product, your process, and your site.
Send a Request NowWhat Happens Next
Tell us about your bulk material, your process, and your site conditions.
We work with you on material, silo type, and configuration – based on a bulk material analysis if needed.
You receive a custom-engineered solution with a detailed quote.
