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Esterification enhances carotenoid retention during bread-making.
María D Requena-Ramírez1, Cristina Rodríguez-Suárez1, Dámaso Hornero-Méndez2
1Department of Plant Breeding, Instituto de Agricultura Sostenible, CSIC, Córdoba, Spain.
Journal of the Science of Food and Agriculture
|February 12, 2026
Summary
Carotenoid esterification enhances stability in wheat-based foods. This study shows esterified carotenoids are better retained during bread-making, especially through baking, offering a strategy for improved preservation.
Area of Science:
- Food Science
- Plant Biochemistry
- Agricultural Science
Background:
- Carotenoids are vital plant antioxidants in wheat foods but degrade during processing.
- Xanthophyll esterification naturally stabilizes carotenoids during grain storage.
- This study explores esterification's protective role in carotenoid retention during bread-making.
Purpose of the Study:
- To investigate carotenoid retention throughout the bread-making process.
- To evaluate the protective effect of carotenoid esterification against degradation.
- To identify critical processing stages affecting carotenoid stability.
Main Methods:
- Analyzed six genotypes with varying carotenoid content and esterification capacity.
- Quantified carotenoids using high-performance liquid chromatography (HPLC) at multiple processing stages.
- Compared retention of free versus esterified carotenoids.
Main Results:
- Esterified carotenoids showed significantly higher retention than free forms throughout bread-making.
- Baking was the most critical step for carotenoid degradation; post-baking storage had minimal impact.
- Carotenoid esterification may continue during early bread-making stages.
Conclusions:
- Carotenoid esterification is a promising strategy to improve carotenoid preservation in bread.
- This approach can complement processing optimizations and genetic improvements in wheat.
- Focusing on baking conditions is crucial for maximizing carotenoid retention.
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