Predicting the surface composition of a spray-dried particle by modelling component reorganization in a drying droplet

Porowska, Anna; Dosta, Maksym; Fries, Lennart; Gianfrancesco, Alessandro; Heinrich, Stefan; Palzer, Stefan

doi:10.1016/j.cherd.2016.03.007

Cited by 26 publications

(12 citation statements)

References 24 publications

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“…In Figure a, irregular capsule shapes are attributed to particle shrinkage and collapse during the SD process. The shape of the particles is determined by the drying process conditions, that is, the atomization speed determines the diameter and number of particles (Porowska et al, ). The feed flow rate establishes the residence time of the material in the drying chamber and the inlet air temperature controls the evaporation rate of the droplets and the external shape of the particles (De Prisco, Maresca, Ongeng, & Mauriello, ).…”

Section: Resultsmentioning

confidence: 99%

Curcumin encapsulation by spray drying using Aloe vera mucilage as encapsulating agent

Medina‐Torres

Núñez-Ramírez

Calderas

et al. 2018

J Food Process Engineering

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In this work, curcumin was spray-dried (SD) with Aloe vera mucilage as the encapsulating agent giving particular attention to the effect of the relevant process parameters (feed flow rate, atomization speed, and inlet air temperature) on the resulting properties of the SD powders.The powders obtained were analyzed by infrared spectroscopy, scanning electron microscopy, rheology, and release profiles. Results show that the best drying conditions are low SD inlet air temperature (150 C), low feed flow rate (1.5 L/hr), and high atomization speed (27,500 rpm).These conditions produced particles with smooth morphologies, preserving the total phenolic content (0.0611 μg EAG), with a radical scavenging capacity of 911.48 μmol Trolox/mg. Release profiles revealed an extended release of encapsulated material with a maximum of about 65% at 24 hr for these conditions and point out the suitability of encapsulated systems for potential applications in functional foods, antioxidant systems, pharmaceutical, and organic pigments. Practical applicationsThis research presents an optimization method to obtain powders of mucilage (Aloe vera, Av)curcumin (Cu) by spray drying (SD), where the Av was used as wall material to encapsulate Cu and obtain the best process conditions (SD) to produce prolonged delivery systems of antioxidant compounds that can be used in the food and pharmaceutical industry. The encapsulated systems were analyzed by rheological tests and were supported with other characterizations, such as antioxidant capacity, morphology (SEM), chemical (FT-IR), and releasing profiles.

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Section: Resultsmentioning

confidence: 99%

Curcumin encapsulation by spray drying using Aloe vera mucilage as encapsulating agent

Medina‐Torres

Núñez-Ramírez

Calderas

et al. 2018

J Food Process Engineering

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“…Calculate the value of the water evaporation rate ( l ) using Equation (15). 4. Calculate the values of liquid thermal conductivity and other properties for the mixture of species.…”

Section: Solution Algorithmmentioning

confidence: 99%

“…The importance of spray/droplet drying in various engineering and pharmaceutical applications is well known [1,2,3,4]. Spray-drying technology can be utilised to incorporate different excipients as well as active pharmaceutical ingredients into a dry powder formulations.…”

Section: Introductionmentioning

confidence: 99%

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A new model for a drying droplet

Sazhin

Rybdylova

Pannala

et al. 2018

International Journal of Heat and Mass Transfer

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A new model for droplet drying is suggested. This model is based on the analytical solutions to the heat transfer and species diffusion equations inside spherical droplets. Small solid particles dispersed in an ambient evaporating liquid, or a non-evaporating substance dissolved in this liquid, are treated as non-evaporating components. Three key sub-processes are involved in the process of droplet drying within the new model: droplet heating/cooling, diffusion of the components inside the droplets, and evaporation of the volatile component. The model is used to analyse the drying of a spray consisting of chitosan dissolved in water. After completion of the evaporation process, the size of the residual solid ball predicted by the model is consistent with those observed experimentally.

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“…20,21) In spray drying process, a feed slurry transforms into fine droplets by passing through a nozzle, then the atomized droplets are dried by a hot atmosphere that the drying chamber provides. 22,23) The granulation of fine powders permits manipulation of the desired properties of powders, which include improved flowability, solubility, density, compactibility, dispersibility, and sinterability. Granulation can be used to prevent dusting that might cause health hazards.…”

Section: Introductionmentioning

confidence: 99%

Study on the Granulation Behavior of TiO2-PVA Composite Powders Prepared Via Spray Drying Technique

Avcıoğlu¹,

Özkal²

2019

J. Korean Ceram. Soc

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In this study, TiO 2-polyvinyl alcohol (PVA) composite granules were prepared via spray drying technique. To investigate the effects of solid content and binder/powder ratio in the slurry on the granulation behavior of TiO 2 powders, the feed compositions were designed to vary over a wide range. The morphology, actual densities, and average granule size and size distribution of the TiO 2-PVA composite granules were characterized by using scanning electron microscopy technique, a gas pycnometer, and an image analyzing program (Image-J), respectively. The results indicate that solid content and the amount of PVA in the feedstock slurry are the dominant factors determining the granule morphology, size, and size distribution of TiO 2-PVA composite. Moreover, it was observed that increasing the solid content and the amount of PVA in the slurry improved the granulation process and reduced the granule defects. For the preparation of spherical TiO 2-PVA composite granules with the minimum amount of non-granulated powders, the optimized composition of the feedstock slurry was found to be 35 wt.% solid and 3 wt.% PVA.

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Predicting the surface composition of a spray-dried particle by modelling component reorganization in a drying droplet

Cited by 26 publications

References 24 publications

Curcumin encapsulation by spray drying using Aloe vera mucilage as encapsulating agent

Curcumin encapsulation by spray drying using Aloe vera mucilage as encapsulating agent

A new model for a drying droplet

Study on the Granulation Behavior of TiO2-PVA Composite Powders Prepared Via Spray Drying Technique

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