Samples
Samples A1 – A4 were commercial Yentafo sauces available in the markets around Bangkok
and samples B1 – B4 were laboratory prepared sauces.
Quality measurement of Yentafo sauce
Physical analysis included color value (L*, C*, h), viscosity and consistency.
Chemical analysis included total solid content (TS), total soluble solid content (TSS),
salt content (NaCl), total acidity (TA) [4] and pH.
Sensory evaluation
Eight trained panelists were selected through preliminary research from Kasetsart University
Sensory and Consumer Research Unit (KUSCR).
Panelists were asked to develop sensory characteristics of Yentofo sauce using Quantitative
Descriptive Analysis technique (QDA), including definitions and references of each attribute.
Twenty ml. of eight Yentafo sauce samples (A1 – A4 and B1 – B4) were prepared in a white
plastic cup with covered lid and labeled with random 3-digit number and served to the panelists. They were then asked to rate the intensities of each attribute using a line scale of 150
mm. [5], which intensities range from 0-15 (0 = no intensity, 15 = extremely strong). Samples
were presented to a panelist with 3 replications.
Statistical analysis
Sensory characteristics were classified by principal component analysis (PCA), and then
similar attributes were grouped using Factor Analysis (FA) technique.
The physical, chemical and sensory characteristics were classified by PCA using XLSTAT
version 2006 to investigate a relationship among instrumental parameters and sensory
attributes.
SamplesSamples A1 – A4 were commercial Yentafo sauces available in the markets around Bangkokand samples B1 – B4 were laboratory prepared sauces.Quality measurement of Yentafo saucePhysical analysis included color value (L*, C*, h), viscosity and consistency.Chemical analysis included total solid content (TS), total soluble solid content (TSS),salt content (NaCl), total acidity (TA) [4] and pH.Sensory evaluationEight trained panelists were selected through preliminary research from Kasetsart UniversitySensory and Consumer Research Unit (KUSCR).Panelists were asked to develop sensory characteristics of Yentofo sauce using QuantitativeDescriptive Analysis technique (QDA), including definitions and references of each attribute.Twenty ml. of eight Yentafo sauce samples (A1 – A4 and B1 – B4) were prepared in a whiteplastic cup with covered lid and labeled with random 3-digit number and served to the panelists. They were then asked to rate the intensities of each attribute using a line scale of 150mm. [5], which intensities range from 0-15 (0 = no intensity, 15 = extremely strong). Sampleswere presented to a panelist with 3 replications.Statistical analysisSensory characteristics were classified by principal component analysis (PCA), and thensimilar attributes were grouped using Factor Analysis (FA) technique.The physical, chemical and sensory characteristics were classified by PCA using XLSTATversion 2006 to investigate a relationship among instrumental parameters and sensoryattributes.
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