Table 1: Experimental design matrix for manufacture of low-fat biscuits.

Expt. No.Coded formPhysical parametersSensory parameters
Diameter (cm)Thickness (cm)Spread ratioHardness (N)Stress-strain
ratio
Colour Texture Taste Flavour Overall acceptability

1−1−1−1−16.280.649.8149.321.6603.723.894.254.034.14
2+1−1−1−16.420.6410.0336.590.7603.504.083.753.833.79
3−1+1−1−16.650.57 11.6725.07 0.574 3.204.003.403.603.30
4+1+1−1−16.550.738.9739.821.0674.253.753.253.253.38
5−1−1+1−16.630.6310.5235.530.8293.754.003.133.133.13
6+1−1+1−16.820.57 11.9631.620.7963.403.503.403.403.40
7−1+1+1−16.420.679.5884.023.1933.203.303.473.363.31
8+1+1+1−16.880.5911.6631.850.6693.173.403.703.403.16
9−1−1−1+16.280.6210.1327.920.5784.004.254.134.134.25
10+1−1−1+16.08 0.728.44 50.661.5083.753.953.603.703.97
11−1+1−1+16.360.659.7853.301.4174.173.753.924.004.04
12+1+1−1+16.700.6710.0040.161.0354.833.452.923.173.04
13−1−1+1+16.280.728.7242.921.3123.103.603.353.203.45
14+1−1+1+17.020.729.7532.230.5863.503.503.253.423.33
15−1+1+1+16.880.6410.7561.901.9953.103.533.333.393.00
16+1+1+1+16.830.6710.1942.671.0223.753.503.253.003.25
17α0006.120.659.4248.081.3963.923.923.583.503.71
18+α0007.030.719.9034.120.9063.603.753.503.583.25
190α006.320.728.7855.701.5314.103.603.703.503.70
200+α006.700.6510.3159.221.7343.203.25 2.88 2.88 2.88
2100α06.230.639.8962.011.6983.703.713.213.123.12
2200+α06.900.5811.9033.500.8643.00 3.403.103.102.36
23000α6.670.6410.4238.380.7563.404.003.503.403.50
24000+α6.750.739.2545.641.4753.303.333.173.253.40
2500006.500.5811.2168.041.5873.503.603.503.503.50
2600006.570.6010.9570.111.6473.603.503.403.403.40
2700006.500.6010.8367.041.5553.603.503.553.303.45
2800006.600.6210.6567.771.5823.503.553.503.403.50
2900006.500.6010.8369.141.6573.503.603.403.403.44
3000006.600.6011.0071.541.6483.603.533.353.353.40
3100006.580.6210.6167.981.6243.553.503.563.313.50
3200006.580.6210.6167.201.6113.583.573.403.403.43

: sugar, : composite fat, : ammonium bicarbonate, : water, MD: maltodextrin, GG: guar gum, A.B.: ammonium bicarbonate; figures in bold are maximum values, and figures in italics are minimum values.