Effect of ultrasound and steam treatments on bioaccessibility of β-carotene and physicochemical parameters in orange-fleshed sweet potato juice

Evelyn Alicia Rios-Romero, Luz Araceli Ochoa-Martínez, Luis Arturo Bello-Pérez, Juliana Morales-Castro, Armando Quintero-Ramos, José Alberto Gallegos-Infante

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Several health benefits have been associated to orange-fleshed sweet potato owing to the existence of various bioactive compounds, including β-carotene. The purpose of this study was to establish the effect of ultrasound and steam treatment on the bioaccessibility of β-carotene, total polyphenols, antioxidant activity, polyphenol oxidase, peroxidase activity, and color in the orange-fleshed sweet potato juice. Sweet potato juice was processed using ultrasound (0.66 W cm−2 and 8 min), steam (2 min), and a combination of steam and ultrasound. The bioaccessibility of β-carotene was increased in processed sweet potato juice, with samples treated by ultrasound showing the highest bioaccessibility (76.6%). Processing had no effect on antioxidant or enzyme activity, but resulted in significant changes in the color of the juice. As a processing technology, ultrasound enables preservation or improvement of the quality of sweet potato juice, and when conbined with other treatments, facilitates the development of new products.

Original languageEnglish
Article numbere06632
JournalHeliyon
Volume7
Issue number4
DOIs
StatePublished - Apr 2021

Keywords

  • Carotenoids
  • In vitro
  • Processing
  • Roots

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