Chapter 5Encapsulation via Spray Chilling/Cooling/Congealing

Demont, Aurélie; Marison, I. W.

doi:10.1201/b19038-12

Cited by 3 publications

(2 citation statements)

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“…Vibrating nozzle/jet: This encapsulation technique, commercialized by Inotech Biotechnoly Ltd. and Nisco Ltd., makes use of permanent vibrational or sinusoidal frequencies of definite amplitude to break up a laminar jet into equally sized droplets stabilized by electrostatic repulsion and achieved by application of an electric field [45]. Two variations are the vibrating nozzle and the vibrating chamber techniques.…”

Section: Techniques Based On Drop Generation Methodsmentioning

confidence: 99%

“…This separation by distance traveled as per size is used to sort different size ranges enabling the collection of monodispersed capsules in the solidifying chamber. The rotary speed and geometry of the disc, alongside the viscosity of the suspension and the feed flow rate determine the size of the droplet which usually ranges from 1 to 200 μm [45].…”

Section: Techniques Based On Drop Generation Methodsmentioning

confidence: 99%

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Natural Polymers in Micro- and Nanoencapsulation for Therapeutic and Diagnostic Applications: Part I: Lipids and Fabrication Techniques

Ngwuluka¹,

Abu-Thabit²,

Uwaezuoke³

et al. 2021

Nano- And Microencapsulation - Techniques and Applications

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Encapsulation, specifically microencapsulation is an old technology with increasing applications in pharmaceutical, agrochemical, environmental, food, and cosmetic spaces. In the past two decades, the advancements in the field of nanotechnology opened the door for applying the encapsulation technology at the nanoscale level. Nanoencapsulation is highly utilized in designing effective drug delivery systems (DDSs) due to the fact that delivery of the encapsulated therapeutic/diagnostic agents to various sites in the human body depends on the size of the nanoparticles. Compared to microencapsulation, nanoencapsulation has superior performance which can improve bioavailability, increase drug solubility, delay or control drug release and enhance active/passive targeting of bioactive agents to the sites of action. Encapsulation, either micro- or nanoencapsulation is employed for the conventional pharmaceuticals, biopharmaceuticals, biologics, or bioactive drugs from natural sources as well as for diagnostics such as biomarkers. The outcome of any encapsulation process depends on the technique employed and the encapsulating material. This chapter discusses in details (1) various physical, mechanical, thermal, chemical, and physicochemical encapsulation techniques, (2) types and classifications of natural polymers (polysaccharides, proteins, and lipids) as safer, biocompatible and biodegradable encapsulating materials, and (3) the recent advances in using lipids for therapeutic and diagnostic applications. Polysaccharides and proteins are covered in the second part of this chapter.

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Section: Techniques Based On Drop Generation Methodsmentioning

confidence: 99%

Section: Techniques Based On Drop Generation Methodsmentioning

confidence: 99%

Natural Polymers in Micro- and Nanoencapsulation for Therapeutic and Diagnostic Applications: Part I: Lipids and Fabrication Techniques

Ngwuluka¹,

Abu-Thabit²,

Uwaezuoke³

et al. 2021

Nano- And Microencapsulation - Techniques and Applications

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Production of Thermal-Resistant Cornstarch-Alginate Beads by Dripping Agglomeration

Feltre

Silva

Lima

et al. 2018

International Journal of Food Engineering

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This work investigated the agglomeration of native cornstarch and production of microcapsules by dripping of sodium alginate suspensions into calcium chloride solution. The crosslinking reaction formed a calcium alginate that worked as an encapsulation matrix and coated the cornstarch granules. The spherical beads produced were rigid and compact, and resistant to mechanical handling. The differential scanning calorimetry (DSC) computed the thermal resistance of the cornstarch-alginate beads. Particles containing 50 % w/w calcium alginate showed an increased gelatinization peak compared to particles with a higher starch content. The increase in alginate fraction resulted in beads with a higher particle density. Scanning electron micrographs showed the coating of cornstarch by the calcium alginate matrix. The beads were compact and with no superficial pores. DSC thermograms of native cornstarch showed a gelatinization temperature of 70.0 °C, and the gelatinization range was 64.6–80.4 °C, while beads containing 50 % alginate had an increased peak at 79.5 °C and the gelatinization interval was 71.0–90.2 °C. When compared with the native cornstarch, cornstarch-alginate beads had a lower water absorption, and the gelatinization occurred at a higher temperature and over a wider temperature range.

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Alterações Das Partículas De Amido De Milho Aglomeradas Com Alginato De Cálcio Pelo Método “Dripping”

Feltre¹,

Dacanal²,

Menegalli³

2015

Anais Do XXXVII Congresso Brasileiro De Sistemas Particulados

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RESUMOO amido de milho é uma importante fonte de energia para os seres humanos e é muito utilizado em preparos de diversos pratos. O amido nativo possui estrutura semicristalina que sofre degradação em elevadas temperaturas e com presença de água. Com o objetivo de alterar a microestrutura do amido, principalmente quanto à temperatura de gelatinização, foi realizada a aglomeração de partículas utilizando-se alginato de sódio e cloreto de cálcio, pelo método de gotejamento, ou dripping. As partículas produzidas foram analisadas por DSC, FT-IR, DRX e MEV. Foram obtidas partículas com diferentes composições, mais especificamente, em frações de (0, 50, 60, 70, 80 e 90)% de amido. As modificações ocorreram à medida em que se aumentou a quantidade de alginato de sódio da partícula. As partículas com menores frações de amido, ou seja, maiores conteúdos de alginato de cálcio, apresentaram pequenas alterações em sua microestrutura e cristalinidade, mas tiveram picos endotérmicos em temperaturas mais elevadas.

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Chapter 5Encapsulation via Spray Chilling/Cooling/Congealing

Cited by 3 publications

References 1 publication

Natural Polymers in Micro- and Nanoencapsulation for Therapeutic and Diagnostic Applications: Part I: Lipids and Fabrication Techniques

Natural Polymers in Micro- and Nanoencapsulation for Therapeutic and Diagnostic Applications: Part I: Lipids and Fabrication Techniques

Production of Thermal-Resistant Cornstarch-Alginate Beads by Dripping Agglomeration

Alterações Das Partículas De Amido De Milho Aglomeradas Com Alginato De Cálcio Pelo Método “Dripping”

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