Production of grape pekmez by Ohmic heating-assisted vacuum evaporation

Pekmez is a concentrated syrup-like food conventionally produced by vacuum evaporation process from sugar-rich fruits. In this study, the applicability of grape pekmez production by ohmic heating assisted vacuum evaporation (ΩVE) method was investigated. Conventional vacuum evaporation (CVE) and ΩVE...

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Veröffentlicht in:Food science and technology international = Ciencia y tecnologia de los alimentos internacional. - 1998. - 28(2022), 1 vom: 05. Jan., Seite 72-84
1. Verfasser: Tunç, Merve Tuçe (VerfasserIn)
Weitere Verfasser: Akdoğan, Arda, Baltacı, Cemalettin, Kaya, Zeliha, Odabaş, Halil İbrahim
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Food science and technology international = Ciencia y tecnologia de los alimentos internacional
Schlagworte:Journal Article HMF Ohmic heating pekmez vacuum evaporation
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520 |a Pekmez is a concentrated syrup-like food conventionally produced by vacuum evaporation process from sugar-rich fruits. In this study, the applicability of grape pekmez production by ohmic heating assisted vacuum evaporation (ΩVE) method was investigated. Conventional vacuum evaporation (CVE) and ΩVE methods were compared in terms of physicochemical properties, HMF (5-hydroxymethylfurfural) contents, rheological properties, and energy consumptions. ΩVE was run at four different voltage gradients (17.5, 20, 22.5, and 25 V/cm). Total process times for grape pekmez production were determined as 57, 28.5, 32, 39, and 50 minutes for CVE, ΩVE (25 V/cm), ΩVE (22.5 V/cm), ΩVE (20 V/cm) and ΩVE (17.5 V/cm), respectively. Energy consumption of CVE method was higher than ΩVE method for all voltage gradients. Energy efficiency increased as the voltage gradient increased. There was no significant difference between CVE and ΩVE methods for HMF contents. The results show that the ΩVE method could be an alternative to the CVE process for grape pekmez production 
650 4 |a Journal Article 
650 4 |a HMF 
650 4 |a Ohmic heating 
650 4 |a pekmez 
650 4 |a vacuum evaporation 
700 1 |a Akdoğan, Arda  |e verfasserin  |4 aut 
700 1 |a Baltacı, Cemalettin  |e verfasserin  |4 aut 
700 1 |a Kaya, Zeliha  |e verfasserin  |4 aut 
700 1 |a Odabaş, Halil İbrahim  |e verfasserin  |4 aut 
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