Sauce is one instant food which is used for dipping or used as the condiment. It is generally
used with meat dishes. Nowadays, sauce has been developed in many categories such as
banana sauce, mango sauce and carrot sauce. Yentafo noodle is also one of the very famous
noodles in Thailand. It is consisted of various ingredients for examples; pieces of coagulated
blood, pickled squids and fish balls with a very unique taste. The main ingredient, which
makes the Yentafo noodles more different and outstanding than other kinds of noodle, is
Yentafo sauce. [1] At present many Yentafo sauce manufacturers use synthetic colorants rather
than natural ones to give the sauce red color. The most popular synthetic colorant used is
Poncoau 4 R, which can be harm to the consumers if it is over consumed. However, Poncoau 4
R is allowed in many countries such as Syria; it is allowed to be used in food up to about 3%
[2], European countries, it is allowed to be used singly or combination in the food and it can be
used not exceed 50 mg/kg or mg/l [3].
Sensory descriptive analysis is one of the methods, used to evaluate unique attributes and
intensities of sample. This technique can be used to estimate characteristics such as appearance,
aroma, flavor and taste.
The objectives of this research were to investigate (1) physical, chemical analysis and sensory
characteristics of commercial and laboratory prepared Yentafo sauces and (2) the relationship
among instrument parameters and sensory attributes by principal component analysis