Summary
This narrative review by Aguilera (2025), published in the Journal of Food Science, examines the concept of the 'food matrix effect' in processed food products — the phenomenon whereby structurally distinct foods with identical chemical compositions may yield different nutritional outcomes. The paper synthesises current understanding of how processing-induced matrices govern nutrient release during digestion, nutrient interactions prior to intestinal absorption, and microbial metabolism in the colon. It argues that compositional labelling alone is insufficient to characterise the nutritional functionality of processed foods, and that matrix design should be considered an active tool in food product development.
UK applicability
The findings are broadly applicable to UK food policy and public health nutrition, particularly in the context of ultra-processed food debates and front-of-pack labelling reform; UK regulators and food manufacturers may find the matrix-effect framework relevant when evaluating the nutritional quality of processed products beyond simple compositional analysis.
Key measures
Bioaccessibility; bioavailability; food matrix structure; digestion kinetics; nutrient release rates; colonic fermentation activity
Outcomes reported
The review reports on how food matrices formed during processing influence the bioaccessibility and bioavailability of nutrients, including digestion kinetics, nutrient interactions in the small intestine, and the role of colonic microbial fermentation. It examines how processed food products with equivalent chemical compositions may differ substantially in their nutritional and health outcomes due to matrix effects.
Topic tags
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