Sweet Potato as a Fat Replacer in Oatmeal Raisin Cookies

testing, a Hedonic scale was used to gather information from consumers about which sample was
preferred. Table 1 shows the results from the objective testing using the Texture Analyzer, Hunter
Colorimeter, and Water Activity System. Table 2 shows the average for each of the variables.
Table 1: Objective Testing Results and Standard Deviations
Texture
Analyzer (g)
Hunter
Colorimeter
Water Activity
System Standard Deviations
L,a,b
Trial 1 Control 297.1 51.4,5.49,2.74 0.57 27.33461237
50% 302.1 41.37,9.30,12.17 0.613 17.74524255
100% 146.2 47.19,6.05,3.03 0.706 24.67024388
Trial 2 Control 654.4 39.79,7.35,7.03 0.542 18.82229883
50% 93.9 46.96,7.64,6.55 0.7 23.02252013
100% 153.9 41.22,7.86,7.30 0.749 19.42408127
Trial 3 Control 206.4 47.47,5.15,2.12 0.561 25.35345407
50% 217.7 41.62,8.44,13.41 0.727 17.89514552
100% 117.9 41.88,7.28,8.93 0.756 19.51744946
Table 2: Average Values
Variable
Average
Texture
Analyzer
Values (g)
Average Water
Activity Values
Average Hunter
Colorimeter Values
L,a,b
Average L,a,b
values
Control 385.967 0.557 46.22,5.99,3.96 L: 44.32
50% 204.567 0.68 43.32,8.46,10.71 a: 7.17
100% 139.333 0.737 43.43,7.06,6.42 b: 7.03
Figure 1, Figure 2, and Figure 3 show the results from Trial 1, 2, and 3 respectively using the
Hunter Colorimeter to find the values of L, a, and b. The error bars indicate the standard deviations for
each trial. Figure 4 shows the average Hunter Colorimeter values for the combined trials.