June 19, 2019
Appetizing equation: Use the power of math to improve food texture, consistency
WEST LAFAYETTE, Ind. – The word starch brings to mind for many people either a food component or something used to stiffen clothing – but its use covers much territory. Starch is used in a wide variety of food and non-food settings. In fact, the global corn starch market is expected to reach $34 billion by 2025.
Starch is used to keep food products fresh, improve taste and control viscosity. One big challenge remains for manufacturers, especially in the food sector: how to determine the ideal temperature to heat the starch for best results.
“There has been no systematic method for predicting the texture of starch paste that is obtained by heating starch suspension,” said Ganesan Narsimhan, a professor of agricultural and biological engineering at Purdue University. “The current trial-and-error methods make process design very expensive.”
Ganesan Narsimhan, Vivek Narsimhan, an assistant professor of chemical engineering, and their team at Purdue created a mathematical model. It predicts the volume fraction of starch granule expression when subjected to a specific heating profile, and relates the volume fraction to the texture of the final product using a master curve.
The team used a reverse engineering process to create a model that allows manufacturers to design a starch-based product with desirable texture and consistency. A video about the technology is available here.
“We have demonstrated the effectiveness of our model with a variety of starches such as corn, rice and potato,” Narsimhan said. “It can be used by food manufacturers to save time and capital through new design processes and by food ingredient companies to modify the physical characteristics of starch to achieve products of desirable textures.”
The work aligns with Purdue's Giant Leaps celebration of the university’s global advancements made in sustainability as part of Purdue’s 150th anniversary. It is one of the four themes of the yearlong celebration’s Ideas Festival, designed to showcase Purdue as an intellectual center solving real-world issues.
About Purdue Research Foundation Office of Technology Commercialization
The Purdue Research Foundation Office of Technology Commercialization operates one of the most comprehensive technology transfer programs among leading research universities in the U.S. Services provided by this office support the economic development initiatives of Purdue University and benefit the university's academic activities through commercializing, licensing and protecting Purdue intellectual property. The office is managed by the Purdue Research Foundation, which received the 2016 Innovation and Economic Prosperity Universities Award for Innovation from the Association of Public and Land-grant Universities. For more information on licensing a Purdue innovation, contact the Office of Technology Commercialization at firstname.lastname@example.org. For more information about funding and investment opportunities in startups based on a Purdue innovation, contact the Purdue Foundry at email@example.com.The Purdue Research Foundation is a private, nonprofit foundation created to advance the mission of Purdue University.