Ohmic Baking of Gluten-Free Bread: Role of Starch and Flour on Batter Properties
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Raw Material Characterization
2.3. GF Batter Preparation
2.4. Breadmaking
2.5. Rheological Measurements of Batters
2.6. Functional Properties of Bread
2.6.1. Baking Loss
2.6.2. Bread Volume
2.6.3. Bread Crumb Texture
2.6.4. Crumb and Crust Color
2.6.5. Crumb Porosity
2.7. Statistics
3. Results and Discussions
3.1. Starch and Flour Properties
3.2. Effect of Starch:Water Ratio on the Electrical Conductivity and Rheological Properties of GF Batters
3.3. Effect of Batter Rheology on GF Bread Properties
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Samples | Water Holding Capacity (g/g) | Swelling Power (%) | Solubility Index (%) | Amylose Content (%) | Starch Damage (%) | Particle Size (μm) | Peak Viscosity (RVU) | Breakdown (RVU) | Final Viscosity (RVU) | Setback (RVU) | Pasting Temperature (°C) |
---|---|---|---|---|---|---|---|---|---|---|---|
Corn | 1.83 ± 0.02 a | 10.28 ± 0.22 b | 3.98 ± 0.98 a | 20.85 ± 1.17 c | 3.06 ± 0.26 c | 20.02 ± 1.04 a | 392.42 ± 13.51 b | 162.22 ± 7.44 c | 361.48 ± 5.63 c | 129.93 ± 2.45 a | 75.65 ± 0.64 d |
Wheat | 1.80 ± 0.02 a | 8.14 ± 0.42 a | 5.96 ± 0.07 a | 26.55 ± 0.53 d | 2.20 ± 0.02 b | 42.98 ± 2.20 b | 389.31 ± 6.88 b | 63.55 ± 2.39 b | 457.26 ± 14.64 d | 131.58 ± 6.19 a | 72.58 ± 0.08 c |
Potato | 1.92 ± 0.05 b | 15.89 ± 0.84 c | 8.91 ± 1.72 b | 21.45 ± 1.96 c | 2.34 ± 0.37 b | 49.03 ± 0.69 b | 1105.41 ± 28.01 e | 953.83 ± 25.4 e | 291.92 ± 12.69 a | 140.34 ± 10.85 a | 67.34 ± 0.42 a |
Cassava | 1.78 ± 0.03 a | 21.17 ± 1.99 d | 16.78 ± 2.05 c | 15.70 ± 0.97 b | 1.65 ± 0.01 a | 31.72 ± 8.02 ab | 519.16 ± 12.95 d | 338.95 ± 16.04 d | 321.9 ± 5.51 b | 141.69 ± 8.6 a | 71.44 ± 0.36 b |
Rice | 2.43 ± 0.01 d | 8.44 ± 0.09 ab | 4.29 ± 0.57 a | 22.15 ± 0.22 c | 6.16 ± 0.00 e | 164.94 ± 5.27 c | 447.12 ± 18.8 c | 171.78 ± 6.58 c | 535.69 ± 11.22 e | 260.35 ± 8.47 b | 76.63 ± 0.03 e |
Buckwheat | 2.30 ± 0.03 c | 8.73 ± 0.81 ab | 5.57 ± 0.58 a | 18.71 ± 0.71 a | 4.05 ± 0.15 d | 266.82 ± 25.25 d | 244.58 ± 18.35 a | 7.69 ± 0.17 a | 472.29 ± 13.32 d | 254.54 ± 25.59 b | 72.51 ± 0.16 c |
Starch or Bread Properties | Elasticity (%) | WHC (g/g) | Particle Size (μm) | Solubility (%) | Swelling Power (%) | Amylose (%) | Starch Damage (%) | Pasting Temperature (°C) | Peak Viscosity (RVU) | Breakdown (RVU) | Setback (RVU) | Final Viscosity (RVU) | Bread Volume (cm3/g) | Baking Loss (%) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WHC (g/g) | −0.39 ** | |||||||||||||
Particle size (μm) | −0.19 | 0.87 ** | ||||||||||||
Solubility (%) | 0.21 | −0.47 | −0.37 ** | |||||||||||
Swelling power (%) | 0.02 | −0.51 ** | −049 ** | 0.94 ** | ||||||||||
Amylose (%) | 0.11 | −0.27 * | −0.52 ** | −0.37 ** | −0.34 * | |||||||||
Starch damage (%) | −0.39 ** | 0.93 ** | 0.68 ** | −0.62 ** | −0.61 ** | −0.03 | ||||||||
Pasting temperature (°C) | 0.03 | 0.40 ** | 0.24 | −0.52 ** | −0.58 ** | 0.11 | 0.65 ** | |||||||
Peak viscosity (RVU) | −0.35 * | −0.26 | −0.45 ** | 0.31 * | 0.52 ** | 0.23 | −0.32 * | −0.75 ** | ||||||
Breakdown (RVU) | −0.37 * | −0.27 * | −0.43 ** | 0.37 * | 0.59 ** | 0.11 | −0.35 * | −0.76 ** | 0.99 ** | |||||
Setback (RVU) | −0.35 | 0.98 ** | 0.92 ** | −0.37 ** | −0.46 ** | −0.40 ** | 0.87 ** | 0.40 ** | −0.39 ** | −0.38 ** | ||||
Final viscosity (RVU) | 0.04 | 0.74 ** | 0.69 ** | −0.61 ** | −0.79 ** | 0.12 | 0.79 ** | 0.68 * | −0.66 ** | −0.72 ** | 0.76 ** | |||
Bread volume (cm3/g) | 0.03 | 0.12 | 0.17 | −0.55 ** | −0.65 ** | 0.31 * | 0.24 | 0.47 ** | −0.52 ** | −0.57 ** | 0.12 | 0.52 ** | ||
Baking loss (%) | 0.06 | 0.17 | 0.12 | −0.77 ** | −0.82 ** | 0.50 ** | 0.38 ** | 0.63 ** | −0.50 ** | −0.58 ** | 0.13 | 0.60 ** | 0.67 ** | |
Crumb firmness (N) | −0.33 * | −0.24 | −0.36 ** | 0.01 | −0.26 | 0.19 | −0.26 | −0.58 ** | 0.81 ** | 0.81 ** | −0.38 | −0.59 ** | −0.53 ** | −0.28 * |
Sample | Ratio * | Electrical Conductivity (S/m) | Flow Behavior Index n | Consistency Coefficient K (Pa·sn) | Apparent Viscosity (Pa·s) |
---|---|---|---|---|---|
Corn | 1:0.9 | 0.64 ± 0.04 a | 0.48 ± 0.06 a | 266.98 ± 13.84 c | 29.11 ± 4.33 b |
1:1.3 | 0.53 ± 0.04 a | 0.46 ± 0.01 a | 62.36 ± 0.44 b | 4.15 ± 0.15 a | |
1:1.7 | 0.56 ± 0.08 a | 0.52 ± 0.02 a | 21.20 ± 1.00 a | 1.98 ± 0.09 a | |
Wheat | 1:0.9 | 0.48 ± 0.02 b | 0.44 ± 0.04 b | 170.33 ± 10.05 c | 12.43 ± 0.95 b |
1:1.3 | 0.40 ± 0.01 a | 0.34 ± 0.04 a | 57.09 ± 0.75 b | 2.29 ± 1.13 a | |
1:1.7 | 0.38 ± 0.01 a | 0.52 ± 0.01 c | 22.32 ± 0.11 a | 1.91 ± 0.08 a | |
Potato | 1:0.9 | 0.47 ± 0.03 a | 0.55 ± 0.06 a | 358.95 ± 13.19 c | 47.12 ± 10.09 b |
1:1.3 | 0.53 ± 0.01 b | 0.55 ± 0.02 a | 70.85 ± 3.86 b | 8.14 ± 0.27 a | |
1:1.7 | 0.46 ± 0.02 a | 0.55 ± 0.03 a | 28.06 ± 0.97 a | 2.80 ± 0.10 a | |
Cassava | 1:0.9 | 0.52 ± 0.01 b | 0.51 ± 0.07 a | 352.83 ± 18.04 c | 56.20 ± 2.48 b |
1:1.3 | 0.54 ± 0.01 c | 0.44 ± 0.03 a | 65.98 ± 1.72 b | 4.57 ± 0.35 a | |
1:1.7 | 0.43 ± 0.01 a | 0.53 ± 0.01 a | 24.29 ± 1.06 a | 2.28 ± 0.04 a | |
Rice | 1:0.9 | 0.57 ± 0.00 c | 0.36 ± 0.02 a | 749.23 ± 50.08 c | 63.04 ± 13.99 ba |
1:1.3 | 0.53 ± 0.02 b | 0.45 ± 0.02 b | 130.14 ± 6.68 b | 15.86 ± 0.71 ab | |
1:1.7 | 0.42 ± 0.01 a | 0.53 ± 0.04 c | 46.51 ± 0.88 a | 5.64 ± 0.07 ab | |
Buckwheat | 1:1 | 0.50 ± 0.02 c | 0.33 ± 0.02 a | 386.33 ± 33.97 c | 28.39 ± 2.22 c |
1:1.5 | 0.41 ± 0.02 b | 0.47 ± 0.02 b | 100.48 ± 7.47 b | 11.94 ± 0.40 b | |
1:2 | 0.35 ± 0.01 a | 0.46 ± 0.02 b | 36.56 ± 2.22 a | 3.65 ± 0.17 a |
Starch/Flour | Ratio | Baking Loss (%) | Bread Volume (cm3/g) | Relative Elasticity (%) | Crumb Firmness (N) | Pore Properties | Crumb Color | ||||
---|---|---|---|---|---|---|---|---|---|---|---|
Number of Pores | Average Size (mm) | Pore Area (%) | L* | a* | b* | ||||||
Ohmic Heating | |||||||||||
Corn | 1:0.9 | 21.03 ± 2.11 b | 3.50 ± 0.10 b | 47.90 ± 1.69 a | 9.89 ± 2.17 b | 95.33 ± 0.58 b | 0.84 ± 0.07 a | 20.42 ± 0.62 a | 90.65 ± 1.78 a | 0.77 ± 0.58 a | 17.45 ± 1.17 a |
1:1.3 | 20.46 ± 0.46 b | 3.50 ± 0.06 b | 61.57 ± 0.54 b | 4.87 ± 0.59 a | 102.33 ± 0.58 c | 0.89 ± 0.08 a | 22.57 ± 1.80 a | 88.74 ± 2.49 a | 0.34 ± 0.08 a | 17.32 ± 0.18 a | |
1:1.7 | 17.27 ± 0.77 a | 2.19 ± 0.12 a | 73.54 ± 2.15 c | 11.32 ± 1.16 b | 90.67 ± 0.58 a | 0.98 ± 0.09 a | 22.25 ± 1.92 a | 91.92 ± 0.35 a | 1.02 ± 0.36 a | 17.09 ± 0.81 a | |
Wheat | 1:0.9 | 22.25 ± 1.24 b | 4.01 ± 0.10 b | 65.57 ± 1.54 a | 2.18 ± 0.26 b | 67.33 ± 1.53 a | 1.25 ± 0.03 a | 21.49 ± 1.21 a | 91.98 ± 0.53 a | 0.69 ± 0.14 a | 12.13 ± 0.87 a |
1:1.3 | 20.94 ± 0.81 ab | 3.85 ± 0.18 b | 73.79 ± 0.69 b | 1.27 ± 0.16 a | 83.67 ± 0.58 b | 1.31 ± 0.18 a | 24.93 ± 1.74 b | 91.75 ± 0.05 a | 0.42 ± 0.25 a | 13.21 ± 0.35 ab | |
1:1.7 | 19.48 ± 0.25 a | 2.81 ± 0.04 a | 76.49 ± 0.80 c | 1.51 ± 0.09 a | 65.33 ± 1.15 a | 1.6 ± 0.11 b | 26.15 ± 1.65 b | 89.97 ± 1.21 b | 0.68 ± 0.05 a | 13.49 ± 0.19 b | |
Potato | 1:0.9 | 11.70 ± 0.30 a | 3.01 ± 0.10 c | 52.87 ± 0.71 a | 10.2 ± 0.45 a | 89.67 ± 2.08 a | 1.04 ± 0.14 b | 23.20 ± 2.54 b | 88.9 ± 0.18 b | 0.76 ± 0.40 a | 14.32 ± 0.60 a |
1:1.3 | 11.74 ± 0.76 a | 1.51 ± 0.01 b | 59.37 ± 0.84 b | 30.97 ± 1.91 b | 108.33 ± 2.52 b | 0.72 ± 0.04 a | 20.23 ± 0.71 ab | 88.07 ± 1.66 b | 1.45 ± 0.39 b | 16.23 ± 0.33 b | |
1:1.7 | 13.50 ± 1.40 a | 1.08 ± 0.04 a | 53.19 ± 2.09 a | 31.01 ± 0.35 b | 94.67 ± 3.06 a | 0.62 ± 0.16 a | 14.71 ± 4.21 a | 85.33 ± 0.70 a | 1.50 ± 0.04 b | 16.72 ± 0.21 b | |
Cassava | 1:0.9 | 11.09 ± 0.83 a | 2.66 ± 0.14 c | 72.51 ± 1.03 c | 1.58 ± 0.18 b | 103.67 ± 3.21 b | 0.94 ± 0.17 a | 24.41 ± 5.16 a | 89.6 ± 1.39 c | 1.26 ± 0.24 a | 14.39 ± 0.40 a |
1:1.3 | 9.88 ± 0.48 a | 1.17 ± 0.07 a | 66.60± 0.48 b | 1.56 ± 0.08 b | 102.67 ± 2.31 b | 0.65 ± 0.10 a | 16.75 ± 2.57 a | 82.4 ± 1.80 b | 2.28 ± 0.20 b | 15.71 ± 0.46 b | |
1:1.7 | 10.31 ± 0.63 a | 1.87 ± 0.54 b | 62.23 ± 0.64 a | 0.59 ± 0.04 a | 43.00 ± 2.65 a | 0.97 ± 1.01 a | 10.71 ± 11.48 a | 74.19 ± 1.77 a | 2.98 ± 0.45 c | 16.73 ± 0.85 b | |
Rice | 1:0.9 | 15.61 ± 2.44 a | 3.02 ± 0.17 b | 50.66 ± 0.53 a | 2.67 ± 0.67 b | 55.67 ± 1.53 a | 1.68 ± 0.37 a | 23.29 ± 4.49 a | 88.06 ± 0.54 a | 1.40 ± 0.02 c | 16.33 ± 0.18 c |
1:1.3 | 19.77 ± 0.91 b | 3.14 ± 0.08 b | 56.96 ± 0.27 b | 0.85 ± 0.17 a | 60.67 ± 1.53 ab | 1.46 ± 0.02 a | 22.22 ± 0.82 a | 89.46 ± 0.15 b | 1.03 ± 0.01 b | 15.34 ± 0.00 b | |
1:1.7 | 20.61 ± 1.80 b | 2.49 ± 0.06 a | 62.15 ± 0.34 c | 0.99 ± 0.10 a | 58.67 ± 2.52 b | 1.28 ± 0.09 a | 18.79 ± 0.82 a | 89.78 ± 0.18 b | 0.60 ± 0.22 a | 14.45 ± 0.68 a | |
Buckwheat | 1:1 | 14.50 ± 0.01 a | 3.03 ± 0.12 b | 60.25 ± 0.80 a | 0.88 ± 0.06 b | 64.33 ± 1.53 b | 1.58 ± 0.13 b | 24.44 ± 2.28 a | 62.12 ± 0.79 a | 7.46 ± 0.20 a | 18.03 ± 0.18 b |
1:1.5 | 14.72 ± 0.58 b | 3.36 ± 0.08 c | 63.19 ± 0.46 b | 0.96 ± 0.11 b | 75.33 ± 1.15 c | 1.30 ± 0.10 a | 24.22 ± 1.83 a | 66.1 ± 0.28 b | 6.60 ± 0.16 a | 16.20 ± 0.54 a | |
1:2 | 19.46 ± 2.27 c | 2.65 ± 0.05 a | 60.91 ± 0.79 a | 0.63 ± 0.03 a | 57.33 ± 0.58 a | 2.34 ± 0.08 c | 32.77 ± 0.88 b | 65.23 ± 1.73 b | 6.64 ± 0.74 a | 15.41 ± 1.21 a | |
Conventional Heating | |||||||||||
Corn | 1:0.9 | 16.96 ± 2.41 a | 2.46 ± 0.05 b | 48.53 ± 0.55 a | 24.13 ± 1.09 c | 78.00 ± 1.00 cb | 0.79 ± 0.08 a | 16.67 ± 0.79 a | 90.25 ± 1.47 ab | 1.03 ± 0.51 a | 16.72 ± 0.87 a |
1:1.3 | 17.31 ± 1.16 a | 2.27 ± 0.25 ab | 54.76 ± 1.37 b | 15.20 ± 0.76 b | 86.67 ± 1.15 bc | 1.08 ± 0.04 b | 23.07 ± 0.92 b | 87.58 ± 2.00 a | 0.59 ± 0.29 a | 17.57 ± 0.85 a | |
1:1.7 | 18.53 ± 0.65 a | 1.99 ± 0.10 a | 66.83 ± 2.22 c | 10.24 ± 0.71 a | 45.67 ± 0.58 a | 1.70 ± 0.07 c | 22.24 ± 0.44 b | 91.68 ± 0.27 b | 0.86 ± 0.56 a | 16.38 ± 0.58 a | |
Wheat | 1:0.9 | 14.57 ± 1.11 a | 2.78 ± 0.09 b | 64.25 ± 1.03 a | 6.11 ± 1.17 c | 90.70 ± 0.38 b | 1.54 ± 0.55 a | 16.78 ± 0.67 a | 88.58 ± 1.58 a | 1.06 ± 0.03 a | 13.79 ± 0.00 a |
1:1.3 | 17.74 ± 0.19 b | 2.23 ± 0.08 a | 75.04 ± 0.44 b | 3.63 ± 0.05 b | 87.43 ± 1.49 a | 1.33 ± 0.09 a | 16.33 ± 0.38 a | 88.98 ± 0.52 a | 0.74 ± 0.06 a | 14.92 ± 0.37 b | |
1:1.7 | 18.85 ± 0.71 b | 2.07 ± 0.16 a | 76.47 ± 0.34 c | 1.95 ± 0.04 a | 88.16 ± 1.78 ab | 1.91 ± 0.56 a | 16.62 ± 0.59 a | 89.49 ± 0.20 a | 1.03 ± 0.57 a | 15.34 ± 0.67 b | |
Potato | 1:0.9 | 12.04 ± 0.71 a | 2.35 ± 0.04 c | 64.89 ± 0.33 a | 6.60 ± 0.39 b | 46.67 ± 1.53 ca | 1.37 ± 0.04 a | 17.65 ± 1.06 ac | 87.6 ± 0.54 b | 0.89 ± 0.05 a | 15.17 ± 0.35 a |
1:1.3 | 15.75 ± 0.23 b | 1.67 ± 0.11 b | 69.03 ± 2.03 b | 3.85 ± 0.59 a | 85.33 ± 1.53 ab | 1.14 ± 0.1 b | 20.9 ± 1.10 b | 87.01 ± 1.07 b | 1.37 ± 0.12 ab | 16.84 ± 0.77 b | |
1:1.7 | 18.82 ± 0.94 c | 1.42 ± 0.13 a | 67.31 ± 1.39 ab | 4.67 ± 0.39 a | 92.00 ± 2.00 bc | 1.18 ± 0.12 a | 28.31 ± 2.01 ac | 83.62 ± 0.35 a | 1.61 ± 0.40 b | 17.82 ± 0.43 b | |
Cassava | 1:0.9 | 12.47 ± 0.65 a | 2.00 ± 0.05 b | 72.55 ± 1.47 b | 1.64 ± 0.60 b | 77.33 ± 1.15 c | 1.05 ± 0.12 a | 20.7 ± 2.39 c | 86.35 ± 0.76 c | 1.97 ± 0.38 b | 15.52 ± 0.46 a |
1:1.3 | 15.42 ± 0.86 b | 1.80 ± 0.03 a | 59.58 ± 1.27 a | 0.60 ± 0.05 a | 37.67 ± 2.52 a | 1.68 ± 0.47 b | 16.08 ± 2.74 b | 81.79 ± 2.24 b | 2.64 ± 0.46 ab | 17.73 ± 0.39 b | |
1:1.7 | 15.3 ± 0.77 b | 1.79 ± 0.14 a | 59.19 ± 1.62 a | 0.52 ± 0.09 a | 41.33 ± 1.53 b | 0.70 ± 0.09 a | 9.24 ± 0.92 a | 74.71 ± 1.70 a | 3.15 ± 0.50 a | 17.33 ± 0.74 b | |
Rice | 1:0.9 | 14.19 ± 0.25 a | 2.39 ± 0.06 b | 53.11 ± 2.31 ca | 4.79 ± 0.48 c | 59.00 ± 3.00 a | 1.66 ± 0.07 c | 24.50 ± 0.61 c | 86.77 ± 0.3 a | 1.48 ± 0.06 b | 16.09 ± 0.37 c |
1:1.3 | 14.99 ± 0.30 a | 2.34 ± 0.05 b | 62.95 ± 1.70 b | 3.40 ± 0.84 b | 73.00 ± 2.65 b | 1.30 ± 0.06 b | 22.54 ± 0.66 b | 88.09 ± 0.29 b | 0.88 ± 0.06 a | 14.08 ± 0.38 b | |
1:1.7 | 17.44 ± 3.48 a | 2.19 ± 0.05 a | 67.88 ± 1.25 ac | 1.83 ± 0.03 a | 70.67 ± 2.08 b | 1.00 ± 0.06 a | 17.69 ± 1.38 a | 88.57 ± 0.10 b | 0.81 ± 0.41 a | 13.25 ± 0.42 a | |
Buckwheat | 1:1 | 15.17 ± 0.34 a | 2.64 ± 0.06 b | 63.05 ± 0.12 b | 1.69 ± 0.32 a | 63.67 ± 1.53 a | 2.02 ± 0.41 b | 32.97 ± 5.24 b | 55.10 ± 1.20 a | 6.65 ± 0.32 a | 13.82 ± 0.32 b |
1:1.5 | 16.43 ± 0.71 ab | 2.44 ± 0.15 b | 63.34 ± 0.53 b | 1.52 ± 0.15 a | 81.00 ± 1.73 b | 1.43 ± 0.10 a | 29.48 ± 1.06 ab | 59.14 ± 0.93 b | 6.67 ± 0.01 a | 12.35 ± 0.32 a | |
1:2 | 18.20 ± 1.99 b | 2.21 ± 0.07 a | 60.95 ± 1.30 a | 1.79 ± 0.49 a | 87.00 ± 2.00 c | 1.11 ± 0.11 a | 23.15 ± 2.28 a | 59.74 ± 0.91 b | 6.48 ± 0.34 a | 11.79 ± 0.31 a |
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Waziiroh, E.; Bender, D.; Saric, A.; Jaeger, H.; Schoenlechner, R. Ohmic Baking of Gluten-Free Bread: Role of Starch and Flour on Batter Properties. Appl. Sci. 2021, 11, 6567. https://doi.org/10.3390/app11146567
Waziiroh E, Bender D, Saric A, Jaeger H, Schoenlechner R. Ohmic Baking of Gluten-Free Bread: Role of Starch and Flour on Batter Properties. Applied Sciences. 2021; 11(14):6567. https://doi.org/10.3390/app11146567
Chicago/Turabian StyleWaziiroh, Elok, Denisse Bender, Anisa Saric, Henry Jaeger, and Regine Schoenlechner. 2021. "Ohmic Baking of Gluten-Free Bread: Role of Starch and Flour on Batter Properties" Applied Sciences 11, no. 14: 6567. https://doi.org/10.3390/app11146567
APA StyleWaziiroh, E., Bender, D., Saric, A., Jaeger, H., & Schoenlechner, R. (2021). Ohmic Baking of Gluten-Free Bread: Role of Starch and Flour on Batter Properties. Applied Sciences, 11(14), 6567. https://doi.org/10.3390/app11146567