Assessment of ultrasound-assisted vacuum impregnation as a method for modifying cranberries' quality.

Ultrason Sonochem

Department of Food Technology of Plant Origin, Poznan University of Life Sciences, ul. Wojska Polskiego 31, 60-624 Poznań, Poland. Electronic address:

Published: September 2022

Combined vacuum impregnation and ultrasound was proposed as an alternative method to improve the infusion of ascorbic acid in berry fruit. The effect of ultrasound application at different stages of impregnation - vacuum, relaxation, and both stages - on the qualitative characteristics of impregnated cranberries was investigated. The quality assessment was based on porosity, color, antioxidant capacity, anthocyanin, polyphenol and structure compound content. Ultrasound-assisted vacuum impregnation contributed to higher ascorbic acid content, smaller relative color difference, and greater antioxidant properties. It was found that the degree of impregnation varies considerably and depends on the stage of using ultrasound. Due to more favorable quality attributes, the conclusion was reached that ultrasound should be applied during the relaxation stage of vacuum impregnation.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9391597PMC
http://dx.doi.org/10.1016/j.ultsonch.2022.106117DOI Listing

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