The effect of food matrix (water-, milk-, or soymilk-fruit juice beverages) and processing
[high-intensity pulsed electric fields (HIPEF); high-pressure processing (HPP); and thermal
treatment (TT)] on the in vitro bioaccessibility of vitamin C and phenolic compounds, as well
as on the hydrophilic antioxidant activity (HAA) of fruit juice-based beverages was analysed.
HIPEF and HPP improved or did not change the bioaccessibility of vitamin C and certain
phenolic compounds in comparison with untreated beverages. In contrast, TT diminished
the bioaccessibility of most of these compounds. The greatest vitamin C bioaccessibility was
obtained in soymilk-fruit juice beverages (SB), whereas water-fruit juice beverages (WB) favoured
the bioaccessibility of phenolic compounds and HAA. Milk-fruit juice beverages (MB)
reduced the bioaccessibility of these hydrophilic constituents. Results showed that both food
matrix and processing modulated the bioaccessibility of vitamin C and phenolic compounds
of fruit juice-based beverages. Furthermore, HPP and HIPEF allow obtaining beverages
with improved nutritional and functional quality.
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