What is the purpose of a triangle test in sensory evaluation?

The purpose of a triangle test in sensory evaluation is to assess if there are detectable differences between three samples. This type of test allows trained panelists or consumers to evaluate three coded samples, wherein two of the samples are the same, and one is different. The participants are tasked with identifying the sample that differs from the other two.

This approach is effective for measuring discrimination, as it focuses on differences in sensory perception rather than preference or overall acceptability. By prompting participants to distinguish between samples, the triangle test provides objective data on whether there are significant differences in attributes such as flavor, texture, or aroma among the samples being tested. It is widely used in product development and quality control to ensure consistency and identify differences in formulations or processes.