Production and Characterization of Dehydrated Acerola Pulp: A Comparative Study of Freeze and Refractance Window Drying

Authors

  • Vitor Augusto dos Santos Garcia Faculty of Animal Science and Food Engineering, University of São Paulo, Av. Duque de Caxias Norte, Pirassununga-SP, Brazil https://orcid.org/0000-0002-7011-616X
  • Josiane Gonçalves Borges Faculty of Animal Science and Food Engineering, University of São Paulo, Av. Duque de Caxias Norte, Pirassununga-SP, Brazil
  • Eduardo Galvão Leite das Chagas Faculty of Animal Science and Food Engineering, University of São Paulo, Av. Duque de Caxias Norte, Pirassununga-SP, Brazil
  • Cristiana Maria Pedroso Yoshida Institute of Ambiental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, Rua São Nicolau, Diadema-SP, Brazil
  • Fernanda Maria Vanin Faculty of Animal Science and Food Engineering, University of São Paulo, Av. Duque de Caxias Norte, Pirassununga-SP, Brazil
  • João Borges Laurindo Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, Florianópolis, SC, Brazil
  • Rosemary Aparecida de Carvalho Faculty of Animal Science and Food Engineering, University of São Paulo, Av. Duque de Caxias Norte, Pirassununga-SP, Brazil

DOI:

https://doi.org/10.37256/fse.4120231754

Keywords:

Malpighia emarginata, pulps, drying, vitamin C, antioxidant, stability

Abstract

Acerola is a perishable fruit with high vitamin C levels and an attractive nutrition property. The goal of the present work was to produce dehydrated acerola pulp with preserved vitamin C, selecting freeze-drying and refractance window (considered a novel and promising drying method) as suitable technologies. The final properties of dehydrated pulps using the drying technologies freeze-drying and refractance window were compared: i) water activity, ii)moisture content, iii) hygroscopicity, iv) color parameters, v) microstructure, vi) antioxidant activity, and vii) ascorbic acid stability (30 °C, 75% RH). The dried acerola pulps exhibited low moisture, water activity, and hygroscopicity regardless of the drying technology. However, the pulp dehydrated by refractance window presented significantly higher antioxidant activity than the freeze-dried pulp, with higher ABTS•+ (1,838.60 μM TE/g dehydrated pulp) and FRAP (1,290.00 μM TE/g dehydrated pulp) values. The ascorbic acid stability values were also higher for the pulp dried by the refractance window, which showed a final content of 98.03 mg/100 g dehydrated pulp after ten days of storage. The refractance window is a more appropriate technology to dehydrate acerola pulp with high vitamin C content, antioxidant activity, and ascorbic acid stability than freeze-drying.

Downloads

Published

2022-11-17

How to Cite

1.
Garcia VA dos S, Borges JG, das Chagas EGL, Yoshida CMP, Vanin FM, Laurindo JB, Carvalho RA de. Production and Characterization of Dehydrated Acerola Pulp: A Comparative Study of Freeze and Refractance Window Drying. Food Science and Engineering [Internet]. 2022 Nov. 17 [cited 2024 Dec. 23];4(1):20-9. Available from: https://ojs.wiserpub.com/index.php/FSE/article/view/1754