Ohmic heating for processing of whey-raspberry flavored beverage

Marcus Vinicius S. Ferreira, Leandro P. Cappato, Ramon Silva, Ramon S. Rocha, Jonas T. Guimarães, Celso F. Balthazar, Erick A. Esmerino, Mônica Q. Freitas, Flavio N. Rodrigues, Daniel Granato, Roberto P.C. Neto, Maria Inês B. Tavares, Paulo Henrique F. Silva, Renata S.L. Raices, Marcia C. Silva, Adriano G. Cruz

Research output: Contribution to journalArticlepeer-review

Abstract

Different Ohmic heating conditions (OH, 10, 100, and 1000 Hz at 25 V; 45, 60, and 80 V at 60 Hz) were assessed to manufacture whey-raspberry flavored beverages. The inhibition of α-glucosidase, α-amylase, and angiotensin-converting I enzymes, antioxidant capacity, fatty acid profile, and volatile organic compounds (VOCs) were determined. OH treated samples presented lower anthocyanins content than the conventional treatment (2.91 ± 0.23 mg/g), while the mild-intermediate conditions (10,100-Hz at 25 V and 45,60-V at 60 Hz) presented the highest chemical antioxidant activity when compared to the extreme processing conditions (1000 Hz-25 V and 80 V-60 Hz). OH led to an increase of 10% in both α-glucosidase (>99%) and α-amylase (≥70%). Among the VOCs, furfural and 5-hydroxymethylfurfural, a major intermediate Maillard reaction product was found in all treatments. Overall, OH can be used in the processing of whey-flavored raspberry beverages.

Original languageEnglish
Article number125018
JournalFood Chemistry
Volume297
DOIs
Publication statusPublished - 1 Nov 2019
Externally publishedYes

Keywords

  • Bioactive compounds
  • Dairy
  • Food development
  • Raspberry
  • Whey beverage

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