Effect of Spray Dryer Scale Size on the Properties of Dried Beetroot Juice

Experiments detailing the spray drying of fruit and vegetable juices are necessary at the experimental scale in order to determine the optimum drying conditions and to select the most appropriate carriers and solution formulations for drying on the industrial scale. In this study, the spray-drying p...

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Autor principal:	Jolanta Gawałek
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	spray drying vegetable powders beetroot natural colorants violet betalain pigments polyphenols Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/2d34bbf1ffc4415f98996b40018e7817
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spelling	oai:doaj.org-article:2d34bbf1ffc4415f98996b40018e78172021-11-11T18:39:01ZEffect of Spray Dryer Scale Size on the Properties of Dried Beetroot Juice10.3390/molecules262167001420-3049https://doaj.org/article/2d34bbf1ffc4415f98996b40018e78172021-11-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6700https://doaj.org/toc/1420-3049Experiments detailing the spray drying of fruit and vegetable juices are necessary at the experimental scale in order to determine the optimum drying conditions and to select the most appropriate carriers and solution formulations for drying on the industrial scale. In this study, the spray-drying process of beetroot juice concentrate on a maltodextrin carrier was analyzed at different dryer scales: mini-laboratory (ML), semi-technical (ST), small industrial (SI), and large industrial (LI). Selected physicochemical properties of the beetroot powders that were obtained (size and microstructure of the powder particles, loose and tapped bulk density, powder flowability, moisture, water activity, violet betalain, and polyphenol content) and their drying efficiencies were determined. Spray drying with the same process parameters but at a larger scale makes it possible to obtain beetroot powders with a larger particle size, better flowability, a color that is more shifted towards red and blue, and a higher retention of violet betalain pigments and polyphenols. As the size of the spray dryer increases, the efficiency of the process expressed in powder yield also increases. To obtain a drying efficiency >90% on an industrial scale, process conditions should be selected to obtain an efficiency of a min. of 50% at the laboratory scale or 80% at the semi-technical scale. Designing the industrial process for spray dryers with a centrifugal atomization system is definitely more effective at the semi-technical scale with the same atomization system than it is at laboratory scale with a two-fluid nozzle.Jolanta GawałekMDPI AGarticlespray dryingvegetable powdersbeetrootnatural colorantsviolet betalain pigmentspolyphenolsOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6700, p 6700 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	spray drying vegetable powders beetroot natural colorants violet betalain pigments polyphenols Organic chemistry QD241-441
spellingShingle	spray drying vegetable powders beetroot natural colorants violet betalain pigments polyphenols Organic chemistry QD241-441 Jolanta Gawałek Effect of Spray Dryer Scale Size on the Properties of Dried Beetroot Juice
description	Experiments detailing the spray drying of fruit and vegetable juices are necessary at the experimental scale in order to determine the optimum drying conditions and to select the most appropriate carriers and solution formulations for drying on the industrial scale. In this study, the spray-drying process of beetroot juice concentrate on a maltodextrin carrier was analyzed at different dryer scales: mini-laboratory (ML), semi-technical (ST), small industrial (SI), and large industrial (LI). Selected physicochemical properties of the beetroot powders that were obtained (size and microstructure of the powder particles, loose and tapped bulk density, powder flowability, moisture, water activity, violet betalain, and polyphenol content) and their drying efficiencies were determined. Spray drying with the same process parameters but at a larger scale makes it possible to obtain beetroot powders with a larger particle size, better flowability, a color that is more shifted towards red and blue, and a higher retention of violet betalain pigments and polyphenols. As the size of the spray dryer increases, the efficiency of the process expressed in powder yield also increases. To obtain a drying efficiency >90% on an industrial scale, process conditions should be selected to obtain an efficiency of a min. of 50% at the laboratory scale or 80% at the semi-technical scale. Designing the industrial process for spray dryers with a centrifugal atomization system is definitely more effective at the semi-technical scale with the same atomization system than it is at laboratory scale with a two-fluid nozzle.
format	article
author	Jolanta Gawałek
author_facet	Jolanta Gawałek
author_sort	Jolanta Gawałek
title	Effect of Spray Dryer Scale Size on the Properties of Dried Beetroot Juice
title_short	Effect of Spray Dryer Scale Size on the Properties of Dried Beetroot Juice
title_full	Effect of Spray Dryer Scale Size on the Properties of Dried Beetroot Juice
title_fullStr	Effect of Spray Dryer Scale Size on the Properties of Dried Beetroot Juice
title_full_unstemmed	Effect of Spray Dryer Scale Size on the Properties of Dried Beetroot Juice
title_sort	effect of spray dryer scale size on the properties of dried beetroot juice
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2d34bbf1ffc4415f98996b40018e7817
work_keys_str_mv	AT jolantagawałek effectofspraydryerscalesizeonthepropertiesofdriedbeetrootjuice
_version_	1718431753146728448

Effect of Spray Dryer Scale Size on the Properties of Dried Beetroot Juice

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