The Product Design of Puffed Snacks by Using Quality Function Deployment (QFD) and Reverse Engineering (RE) Techniques

Abstract

Quality function deployment (QFD) and reverse engineering (RE) techniques were used to design a new product that consumer wants. To prepare the information, the consumer test and quantitative descriptive analysis (QDA) were conducted to obtain liking scores and QDA attributes of commercial products. QFD was applied to relate consumer liking and QDA attributes of products, and to identify the priority and the direction of goodness for each QDA attribute. For a consumer group, it was found that flavours, both potato and seasoning flavours, were the most important attributes, followed by saltiness and sweetness. This target consumers wanted the product that was strong in seasoning aroma, but optimum
in seasoning taste and saltiness, and slightly in sweetness. RE was then utilized to create the profile of the target product. The RE results showed that the target product should be stronger in seasoning flavours and saltiness, and slightly in sweetness. To compromise the results from both QFD and RE, the flavouring compound should be reformulated to include less salt to make puffed snacks strong in flavours but optimum in taste.