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Greek Yogurt Firmness and Stickiness

Situation

A processor of Greek yogurt was looking for a way to measure the difference between their 0% fat and 2% fat products. Current methods involve sensorial inspections which are very subjective.

This processor did not have a way to objectivly measure the difference in texture between their products. It was important for them to know that the products’ textures were very similar, because from a customer stand-point, they do not want a customer to experience a drastic difference in texture between the 0% fat product and the 2% fat product.

 

 

Method

Testing was performed with a TMS-Pro Texture Analyzer, a 250N load cell and an FTC custom-made cylinder probe. The test performed was a back extrusion test. As such, the program was written to start at zero, run down at 100mm/min until it sensed the top of the yogurt, then run into the yogurt 20mm at 200mm/min, then return to zero. The individual cup of yogurt was placed on the standard fixture table so the cylinder probe ran down directly into the product.

The graph to the right shows the curves generated from the test. The first curve is the cylinder probe entering the product. The negative force curves on the bottom show the cylinder retracting from the product and the stickiness on the return home. The test proved positive results for the processor, as there was not a significant difference detected between the textures of the two products.

 

 

Significance

  • Quick and easy test that gives repeatable, objective results that are nearly real time with the processing
  • Allows for more concise control of textural attributes of the product
  • Reduces the possibility of downtime due to a product that does not meet quality standards

Trusted by customers across the world

Our experience with FTC has been more than satisfactory, not only for the quality of the equipment you’ve got but for the post selling service that has proved to be excellent.

Any problem that we had, it took nothing more than a simple mail or phone call to have your immediate answer. We want to thank you very much for the quality of service provided.

 

 

Gonzalo Moraes, Arrozur S.A. Montevideo – Uruguay

My first contact with FTC was through buying texture analyzer equipment as my area of interest is Rheology. We faced a problem operating the appliance. The company tried hard to help us through the internet, but the University thought it was better to send me to the company branch located in England. I received a highly advanced training course for 10 days free of charge. They provided me with programs that operate the equipment along with the information needed.

It was a great effort and outstanding support. I would like to thank Shirl Lakeway and FTC for providing me with this opportunity and for his continuous help. Finally, I encourage researchers who are interested in the physical properties of foods and dairy to choose FTC as it is a respectable and dependable company and offers the best deals concerning prices and training with different languages, such as Arabic for the Middle East.

Professor Hoda El-Zeini, Dairy Science and Agriculture University - Cairo, Egypt
Professor
https://cu.edu.eg

I am impressed by the great attitude you have toward your customers.

With all the responsibilities you have, but in less than an hour you reply to our one year’s worth of questions, as if you are dedicated to provide support to our company only.

 

 

Ahmed N. Alajaji, Aljazirah Dates and Food, Saudi Arabia
http://www.aljazirahdates.com.sa