How to lower pH

What is liquefaction?

Liquefaction uses heat and alpha-amylase to convert granular starch into starch hydrolysate (DEx) to be saccharified later. With Novozymes, you can run liquefaction at a lower pH, preventing problems and saving costs.

The most efficient liquefaction 

How can enzymes help?

Liquefaction should run efficiently, but sometimes it doesn’t. 

Just a few of the challenges are the cost of chemical inputs and removing them later with ion exchange, incomplete conversion, and iodine-positive issues causing quality and filtration issues 

DE (dextrose equivalent) development in liquefaction is determined by process conditions, enzyme dosage and efficiency. Novozymes’ range of alpha-amylases can optimize the liquefaction process in terms of cost, quality and efficiency under a wide variety of conditions. With LpHera®, you can cut your chemical costs by more than 50%.




Starch enzyme
Technical experts at your service

Because implementation counts

Whether the end-product is high fructose syrup, dextrose, maltose, maltodextrin or polyols, Novozymes can help with products and technical expertise.  

Implementation is key to getting the most out of enzymes for liquefaction. That’s why our technical experts are on the ground in starch plants all over the world every day, helping them become even more efficient and profitable.

Get the most from your corn

Our solutions for liquefaction

Novozymes LpHera® is an alpha-amylase that allows you to cut your pH chemicals by more than 50%. 


  • Cut pH chemical usage by 50%
  • High fructose syrup producers can also cut energy and water usage by 7%
  • Crystalline dextrose producers can drive crystallization yields by up to 0.6% points
  • Fermentation products producers can also drive higher fermentation yields


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Optimize starch liquefaction in a wide variety of processing conditions with Novozymes’ range of alpha-amylases for starch liquefaction, including Novozymes Liquozyme® and Termamyl®. 


  • Efficient DE development – when high DE development in a short time is a key parameter
  • High dextrose yield – with minimal by-product formation
  • Fast viscosity reduction – enabling high dry substance levels
  • Low color formation – reducing refinery costs
  • Savings on chemicals and ion exchange costs by eliminating calcium addition  


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Have questions about liquefaction?

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