Total quality index of ultrasound-treated blueberry and cranberry juices and nectars

The influence of ultrasound in combination with elevated temperature (thermosonication) is important in inactivation effects on microorganisms. However, overall quality of these products can be deteriorated. The aim of this study was to examine the use of a single quality index in evaluating effects...

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Veröffentlicht in:Food science and technology international = Ciencia y tecnologia de los alimentos internacional. - 1998. - 24(2018), 5 vom: 25. Juli, Seite 434-446
1. Verfasser: Režek Jambrak, Anet (VerfasserIn)
Weitere Verfasser: Šimunek, Marina, Djekic, Ilija
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Food science and technology international = Ciencia y tecnologia de los alimentos internacional
Schlagworte:Journal Article Juices and nectars quality characteristics total quality index ultrasound treatment Plant Nectar
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520 |a The influence of ultrasound in combination with elevated temperature (thermosonication) is important in inactivation effects on microorganisms. However, overall quality of these products can be deteriorated. The aim of this study was to examine the use of a single quality index in evaluating effects of ultrasound technology on quality characteristics of blueberry and cranberry juices and nectars. For the purpose of this study based on 10 quality parameters, two mathematical models for calculating a single total quality index have been introduced. Samples were treated according to the experimental design, with high power ultrasound frequency of 20 kHz under various conditions (treatment time: 3, 6 and 9 min, sample temperature: 20 ℃, for thermosonication: 40 and 60 ℃ and amplitude: 60, 90 and 120 µm). Mathematical index of total quality index in order to evaluate total quality of ultrasound-treated juices and nectars was established. For cranberry juices, treatments '11' (amplitude 120 µm) and '16' (amplitude 60 µm) both for 9 min and the temperature of 20 ℃ were best scored for both models. Treatment '6' (amplitude 120 µm, 3 min treatment time and the sample temperature of 20 ℃) for cranberry nectars was among the best for both models. Ultrasound treatments '6' of amplitude 120 µm, 3 min and the temperature of 20 ℃ and '11' same amplitude 120 µm and temperature, but 9 min were best scored blueberry juices for both models. Blueberry nectar had best total quality index for treatments '5' (amplitude 120 µm, 6 min treatment time and the sample temperature of 40 ℃) and '6' (amplitude 120 µm, 3 min treatment time and the sample temperature of 20 ℃) 
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650 4 |a Juices and nectars 
650 4 |a quality characteristics 
650 4 |a total quality index 
650 4 |a ultrasound treatment 
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700 1 |a Šimunek, Marina  |e verfasserin  |4 aut 
700 1 |a Djekic, Ilija  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Food science and technology international = Ciencia y tecnologia de los alimentos internacional  |d 1998  |g 24(2018), 5 vom: 25. Juli, Seite 434-446  |w (DE-627)NLM098247832  |x 1532-1738  |7 nnns 
773 1 8 |g volume:24  |g year:2018  |g number:5  |g day:25  |g month:07  |g pages:434-446 
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