Effect of high-pressure processing and milk on the anthocyanin composition and antioxidant capacity of strawberry-based beverages.
The present study investigated processing strategies and matrix effects on the antioxidant capacity (AC) and polyphenols (PP) content of fruit-based beverages: (1) strawberry powder (Str) + dairy, D-Str; (2) Str + water, ND-Str; (3) dairy + no Str, D-NStr. Beverages were subjected to high-temperature-short-time (HTST) and high-pressure processing (HPP). AC and PP were measured before and after processing and after a 5 week shelf-life study. Unprocessed D-Str had significantly lower AC compared to unprocessed ND-Str. Significant reductions in AC were apparent in HTST- compared to HPP-processed beverages (up to 600 MPa). PP content was significantly reduced in D-Str compared to ND-Str and in response to HPP and HTST in all beverages. After storage (5 weeks), AC and PP were reduced in all beverages compared to unprocessed and week 0 processed beverages. These findings indicate potentially negative effects of milk and processing on AC and PP of fruit-based beverages.
Center for Nutrition Research, Institute for Food Safety and Health, Illinois Institute of Technology , 6502 South Archer Road, Bedford Park, Illinois 60501, United States.
Ravi Kiran
RK
Tadapaneni
Katarzyna
K
Banaszewski
Eduardo
E
Patazca
Indika
I
Edirisinghe
Jack
J
Cappozzo
Lauren
L
Jackson
Britt
B
Burton-Freeman
D000818:Animals; D000872:Anthocyanins / Q000032:analysis*; D000975:Antioxidants / Q000032:analysis*; D001205:Ascorbic Acid / Q000032:analysis; D001628:Beverages / Q000032:analysis*; D002853:Chromatography, Liquid; D005511:Food Handling / Q000379:methods*; D005516:Food Microbiology; D031985:Fragaria / Q000737:chemistry*; D005612:Freeze Drying; D005638:Fruit / Q000737:chemistry; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D016014:Linear Models; D008892:Milk; D059808:Polyphenols / Q000032:analysis; D011312:Pressure; D053719:Tandem Mass Spectrometry
D000872:Anthocyanins; D000975:Antioxidants; D059808:Polyphenols; D001205:Ascorbic Acid