Fundamental evaluation and optimization of porous spherical silica for developing functional fine particles via fluidized bed coating

There are various food-processing technologies with the aim of protecting foodstuffs from environmental factors and increasing their shelf life. One of these is encapsulation technology, which has recently been used with an increased interest. With the fluidized bed coating, which is one of the physical methods used for encapsulation, the solid core materials are fluidized via the air stream and a film layer is formed on the surface of the core material with the coating material. The applicability of the fluid bed coating technique, as well as particulate properties, is significantly influenced by process variables used in the system, environmental variables and thermodynamic factors. The release characteristics of capsules formed during the process can be changed by various mechanisms such as heating, dissolution, mechanical or chemical fracture etc. and controlled release can be achieved. The fluidized bed coating method not only has the advantage of controlled release but also provides a homogeneous powder product, reduction of fine particles, development of transport and storage facilities, protection of reactive components, and prevention unwanted taste and odour. In this study, researches on fluid bed coating mechanism, fluid bed coating systems and applications of fluid bed systems in the food industry have been reviewed.

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A novel fluidized-bed coating of fine particles by rapid expansion of supercritical fluid solutions

Powder Technology ◽

10.1016/0032-5910(95)03021-x ◽

1995 ◽

Vol 85 (3) ◽

pp. 275-278 ◽

Cited By ~ 53

Author(s):

Atsushi Tsutsumi ◽

Shoichi Nakamoto ◽

Tomoko Mineo ◽

Kunio Yoshida

Keyword(s):

Fluidized Bed ◽

Supercritical Fluid ◽

Fine Particles ◽

Rapid Expansion ◽

Fluidized Bed Coating

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Micro-Suspensions vs Nano-Suspensions: Impact of Particle Size on the Properties of Feed Liquid during Fluidized-Bed Coating

10.26226/morressier.57d6b2bfd462b8028d88dd88 ◽

2016 ◽

Author(s):

Basel Arafat

Keyword(s):

Particle Size ◽

Fluidized Bed ◽

Fluidized Bed Coating

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Monte Carlo simulations to determine coating uniformity in a Wurster fluidized bed coating process

Powder Technology ◽

10.1016/j.powtec.2006.05.001 ◽

2006 ◽

Vol 166 (2) ◽

pp. 81-90 ◽

Cited By ~ 43

Author(s):

KuZilati KuShaari ◽

Preetanshu Pandey ◽

Yongxin Song ◽

Richard Turton

Keyword(s):

Monte Carlo ◽

Monte Carlo Simulations ◽

Fluidized Bed ◽

Coating Process ◽

Fluidized Bed Coating ◽

Coating Uniformity

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Dynamic Analysis of Bubbling Fluidized Bed of Fine Particles Caused by Vibration Convection and Vibration-Induced Air Inflow

KAGAKU KOGAKU RONBUNSHU ◽

10.1252/kakoronbunshu.39.420 ◽

2013 ◽

Vol 39 (5) ◽

pp. 420-425 ◽

Cited By ~ 3

Author(s):

Megumi Mizutani ◽

Masatoshi Yasuda ◽

Shuji Matsusaka

Keyword(s):

Dynamic Analysis ◽

Fluidized Bed ◽

Fine Particles ◽

Bubbling Fluidized Bed

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Effect of Process Variables on Efficiency and Particle Growth of Spilanthes oleracea Seeds Coating

Materials Science Forum ◽

10.4028/www.scientific.net/msf.660-661.419 ◽

2010 ◽

Vol 660-661 ◽

pp. 419-425 ◽

Cited By ~ 1

Author(s):

C.M.L. Costa ◽

L.J.G. Faria ◽

Cristina dos Santos Rocha Sandra

Keyword(s):

Fluidized Bed ◽

Flow Rate ◽

Particle Growth ◽

Process Variables ◽

Relative Growth ◽

Coating Efficiency ◽

Fluidized Bed Coating ◽

Common Technique ◽

Coating Suspension ◽

Granule Growth

The coating of vegetable seeds is a very common technique, mainly for the species which have small seeds. One of its functions is to increase the seed size to direct sowing. In the present study the coating of Spilanthes oleracea L. seeds with a polymeric suspension in fluidized bed was analyzed. The effects of process variables on the coating efficiency of top-spray fluidized bed coating were evaluated. The independent variables studied were the flow rate of coating suspension and the air mass flow. The quantification for the entrance variables influence on the coating efficiency and granule growth, as well as the identification of optimal conditions were made by means of an experiment factorial design technique. Polynomial models for the responses: efficiency and relative growth of the particles were deduced. The highest coating efficiency was achieved at a high flow rate of coating suspension.

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