Comprehensive Analyses of Breads Supplemented with Tannic Acids

Area of Science:

• Food Science
• Food Chemistry
• Cereal Science

Background:

• Tannic acid (TA) is a novel dough additive for wheat bread-making.
• Limited research exists on TA's impact on sensory bread quality and commercial flour.
• Evaluating TA's potential requires testing across diverse commercial wheat flours.

Purpose of the Study:

• To assess the effects of tannic acid (TA) supplementation on bread-making quality.
• To investigate TA's impact on sensory parameters, antioxidant activity, and texture.
• To evaluate TA's efficacy using three distinct commercial wheat flours.

Main Methods:

• Three commercial wheat flours (XL, QZG, QZZ) were supplemented with 0.1% and 0.3% TA.
• Proximate composition, bread volume, specific volume, and antioxidant activity (FRAP, ABTS) were analyzed.
• Texture Profile Analysis (TPA), colorimetry, crumb structure, and sensory evaluations were performed.

Main Results:

• TA increased bread volume and specific volume for XL and QZG flours.
• TA significantly enhanced antioxidant capacities across all flours (approx. 4-fold by FRAP, 3-fold by ABTS).
• TA improved texture (reduced hardness, gumminess, chewiness in XL bread), crumb structure (increased porosity), and consumer acceptance.

Conclusions:

• Tannic acid supplementation improves bread volume, antioxidant activity, and texture.
• TA does not negatively affect sensory attributes and enhances consumer acceptance.
• TA demonstrates significant commercial potential as a dough improver for various wheat flours.