Wheat flour without addition of larval-stage mealworm powder (control) had the
highest peak viscosity of 139.14 RVU. The addition of higher levels of larval-stage mealworm
powder resulted in significantly decrease in peak viscosity of wheat flour (p<0.05). The pasting
temperatures of all samples were between 87.20 and 89.50oC. The hardness of bread without
the addition of larval-stage mealworm powder was 108.50 gforce, whereas the hardness of
fortified bread samples raised approximately 4 times when adding larval-stage mealworm
powder to 5-15% (425.83 to 487.67 gforce). It was found that an increase of larval-stage
mealworm powder leading to lower specific volume and higher hardness in bread after baking.
The fortification of larval-stage mealworm powder also caused the increase of color intensity
due to the original brown color of larval-stage mealworm powder and the occurrance of
maillard reaction during baking. The non-uniformity of porosity of the bread products was
observed in fortified bread samples. The bread products added by larval-stage mealworm
powder at 0, 5, 10 and 15% of wheat flour had protein contents of 9.63, 12.63, 13.21 and 13.73%
respectively. The bread products fortified at 5% of wheat flour revealed the most comparable
quality to the control bread sample.
Keywords
Bread, Insect, Mealworm, Protein fortification
INTERNATIONAL JOURNAL OF AGRICULTURAL TECHNOLOGY
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