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Journal of Food Science and Technology

, Volume 56, Issue 4, pp 1899–1908 | Cite as

Vacuum drying application to maqui (Aristotelia chilensis [Mol] Stuntz) berry: Weibull distribution for process modelling and quality parameters

  • Quispe-Fuentes IssisEmail author
  • Vega-Gálvez Antonio
  • Uribe Elsa
  • Vásquez Valeria
  • Cárdenas Nicole
  • Poblete Jacqueline
Original Article
  • 35 Downloads

Abstract

In this study, maqui berries were subjected to vacuum drying at 40–80 °C to assess and compare the effect on proximate composition, dietary fiber, phenolic and flavonoid compounds, antioxidant capacity and sugar content. The Weibull model was used for describing the vacuum drying process. The results indicated that the highest retention of total phenolic content (TPC) and total flavonoid content (TFC) was obtained after drying at 80 °C. Six phenolic compounds were identified and quantified by liquid chromatography. These were gallic acid, protocatechuic acid, ellagic acid, ferulic acid, myricetin and quercetin. In general, every phenolic compound showed a higher retention at temperatures above 60 °C. The antioxidant capacity of dried samples (ORAC assay) showed significant differences compared to the fresh fruit. Fructose and glucose were the two sugars present in the fruit. These results show that vacuum drying of maqui berries at 80 °C is an appropriate temperature for maintaining TPC, TFC, anthocyanins, sugars and dietary fiber with a shorter drying time compared to the other temperatures.

Keywords

Vacuum drying Antioxidants Phenolic compounds Dietary fiber 

Notes

Acknowledgements

The authors appreciate financial support from the Food Engineering Department of University of La Serena and CONICYT-PCHA/National Doctorate/2016-21161653.

Compliance with ethical standards

Conflict of interest

The authors declare having no conflict of interest.

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Copyright information

© Association of Food Scientists & Technologists (India) 2019

Authors and Affiliations

  1. 1.Department of Food EngineeringUniversity of La SerenaLa SerenaChile
  2. 2.Instituto de Investigación Multidisciplinario en Ciencias y Tecnología, University of La SerenaLa SerenaChile

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