Investigation of a coating system for microencapsulation of iodine.

by Eilyn Rodriguez

Written in English
Published: Pages: 95 Downloads: 245
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The effectiveness of enteric coatings in stabilizing microencapsulated iodine was investigated. Eudragit NE 30D, Eudragit RS 30D, Eudragit S100, HPMCAS, and ethylcellulose coatings (5--15% particle mass encapsulation level) on potassium iodate premixes were identified as the most stable formulations based on iodine retention tested in double fortified salt samples with soy stearine-encapsulated iron premixes stored at different conditions (60% RH at 40°C, and room temperature conditions: 25°C and 35% RH) for 3 months.Potassium iodate premixes encapsulated with these coatings (15% encapsulation level) were added to non-iodized salt samples and exposed to much more severe conditions (0.1% w/w ferrous sulphate and 60%RH at 40°C). All the iodine initially contained in the samples was lost in eight weeks. Process control and difficulties experienced with the equipment available did not allow continuous film formation, which influenced the results.The use of these polymeric coatings increased the particle density of the premixes by 25%--60% compared to soy stearine encapsulated iodine, eliminating the potential problem of losing floating premix particles during food preparation. Further investigation of alternative film formers was recommended along with optimization of coating techniques, conditions and formulations.

The Physical Object
Pagination95 leaves.
Number of Pages95
ID Numbers
Open LibraryOL20238003M
ISBN 100494021535

A method was developed for the preparation of microcapsules containing a reactive amine with potential applications in self-healing polymers. Amine core microcapsules were prepared by interfacial polymerization of an isocyanate and an amine stabilized by an inverse Pickering emulsion. Microcapsules were successfully isolated, dried, and redispersed in epoxy. Visualization of capsules in cured Cited by: lactoperoxidase system (LPS) OSCN-Listeria bactericide Objectives: Release Microencapsulation () MLL vol. 6, Citus Book, london, UK. Microencapsulation documents referenced in Chemical Abstracts Microencapsulation: Applications. ENITIAA, BP, F Nantes - Email: [email protected] Coating / agglomeration Pan. Spray Coating and Drying Processes. Authors; Authors and affiliations Methods of studying aging and stabilization of spray-congealed solid dispersions with carnauba wax. alorimetric investigation. Int. J. J.O. and Venkatesh, M.M.G. () Microencapsulation for iodine stability in salt fortified with ferrous fumarate and Cited by:   Microencapsulation is a process in which very tiny droplets or particles of liquid or solid material are surrounded or coated with polymeric, waxy or protective material. The product obtained by this process is called as micro particles, microcapsules.

Chemical Based Microencapsulation Technologies: Coacervation Interfacial Polymerisation In-situ Polymerisation Liposomes Inclusion Complexation: Coacervation. Sometimes called phase separation this technology is considered as the oldest true encapsulation technology first developed by the National Cash Register Company for carbonless copy-paper.   Depending upon the method of microencapsulation employed & properties of final product needed, coatings solution may contain different additive such as film formers, plasticizers, and fillers and may be applied through different solvent system. The ideal properties of the coating materials are: They should produce a film that is cohesive with. Microencapsulation Technology for Corrosion Mitigation by Smart Coatings [Jerry Buhrow, Nasa Technical Reports Server (Ntrs), Et Al] on *FREE* shipping on qualifying offers. A multifunctional, smart coating for the autonomous control of corrosion is being developed based on micro-encapsulation technology. Corrosion indicators as well as corrosion inhibitors have been Cited by: 6. Evaluation of mucoadhesive coatings of chitosan and thiolated chitosan for the colonic delivery of microencapsulated probiotic bacteria. Journal of Microencapsulation , 30 (2), DOI: /Cited by:

With more than 60 years of experience in encapsulation technology at the micro- and nanoscales, we can solve your application problems by using a wide variety of microencapsulation and particle coating technologies. Our full range of services includes feasibility studies, product and process optimization, pilot-scale production, equipment fabrication, and scale and system integration. The microencapsulation technology consists of a trap of a compound inside a tiny sphere known as microsphere. The microencapsulation concerns many different active materials such as bioactive compounds, drugs, vitamins, enzymes, flavors, and pesticides. This technology has gained real interest in numerous fields such as agriculture, cosmetic, pharmaceutical, textile, and : Mariem Ben Jemaa, Hanen Falleh, Riadh Ksouri.   Hence, for emulsion-based microencapsulation techniques, this factor plays a key role in determining final stability of co-encapsulated system and core materials. Marsanasco et al. () prepared soy phosphatidylcholine (SPC) liposomes co-encapsulating bioactive compounds (omega-3, omega-6, and vitamin E) with folic acid incorporating either Cited by: The Journal of Microencapsulation is a peer-reviewed scientific journal that covers research on the preparation, properties, and uses of individually encapsulated novel small particles, as well as improvements to techniques using micro and nano particles in industrial, engineering, pharmaceutical, biotechnology, and research line: Pharmacology.

Investigation of a coating system for microencapsulation of iodine. by Eilyn Rodriguez Download PDF EPUB FB2

Microencapsulation of Iodine by Spray Drying and Fluidized Bed Drying Fortifying salt with iron along with iodine was first studied by microencapsulating iodine in order to create a protective barrier, since iron compounds are relatively more stable than iodine by: 5.

microencapsulation but the most studied and well understood coating system is gelatin/gum acacia system. However, other coating systems such as gliadin, heparin/gelatin, carrageenan. Samples containing up to 1% iodine were stable for periods up to 12 months under the high temperature and high humidity conditions.

Conclusions and recommendations. Microencapsulation of iodine in the form of either KI or KIO 3 can protect double fortified salt from iodine loss even under severe storage conditions.

The most effective samples retained more than 75% of their iodine content for 12 months Cited by: Coating Materials for Microencapsulation The coating material should be capable of forming a film that is cohesive with the core material; be chemically compatible and nonreactive with the core material; and provide the desired coating properties, such as strength, flexibility, impermeability, optical properties, and Size: KB.

KEYWORDS: Microencapsulation; Core Materials; Coating Materials. Microencapsulation is a process by which solids, liquids or even gases may be enclosed in microscopic particles formation of thin coatings of wall material around the substances. The process had its origin in the late s as a cleaner substitute for carbon paperCited by:   Microencapsulation of iron in a reversed enteric coating using spray drying Investigation of a coating system for microencapsulation of iodine.

book for double fortification of salt with iodine and iron Verónica Dueik and Levente L. Diosady Journal of Food Process Engineering,Vol Number 2, Page eCited by: 9. Because of the high protection of chitosan for viable cells, it has been used as a coating agent for probiotic microencapsulation.

There are many advantages of the chitosan coating, such as non toxicity, good biocompatibility and the improvement of drug bioadhesive and payload properties (19, 20).Cited by: 2 1 Functional Coatings and Microencapsulation: A General Perspective play additional roles in determining the end properties of the coating.

The terms “coating” and “paint” will be used synonymously in this book. In general, collec-tively or individually, paints, varnishes (transparent solutions) and lacquers.

Encapsulation of food ingredients into coating materials can be achieved by several methods. The selection of the microencapsulation process is governed by the physical and chemical properties of core and coating materials and the intended application of food ingredients.

The microencapsulation processes that are used to encapsulate food ingredients. Microencapsulation is the enveloping of liquid droplets or fine solid particles to form microcap sule, having an average diameter as small as 1 μm to several hundred micrometers.

Rigidization of the coating – It involves rigidizing the coating, usually by thermal, cross-linking, or desolvation techniques, to form a self-sustaining microcapsules 2 eg. Coacervation Microencapsulation of Talc Particles with Poly (methyl methacrylate) by Pressure-Induced Phase Separation of CO 2-Expanded Ethanol Solutions 6.

provide the desired coating properties, such as strength, flexibility, impermeability, optical properties, and stability. The coating materials used in microencapsulation methods are enable to some extent, to insitu modification. The selection of a given coating often can be File Size: KB.

Microencapsulation by Coacervation Spray Encapsulation blood levels buffer capsule wall capsules carbonless copy paper Chem chemical cholesterol Cinisello Balsamo coacervation coating color concentration core material diameter diet Diffucap diffusion dispersion dissolution dosage form dose droplets drug release effect About Google Books.

were investigated, the need for separation of iron and iodine by a physical barrier was identified. This physical barrier must remain intact from manufacture through to home usage, but must release the nutrients either during food preparation or in the digestive system. Microencapsulation of iodine using food-grade, digestible ingredients was.

What is Microencapsulation Technology. Microencapsulation is a process by which we apply a protective coating called a matrix around a small particle called the core or active. The matrix keeps an active ingredient locked in and stabilized until the release of the material is desired. People might encapsulate in order to mask a bitter or bad taste.

Microencapsulation For Textile Finishing DOI: /X 3 | Page light or a solvent, microcapsules break open, the content is released, colour is developed and in this way detection is achieved (Nelson, ).File Size: KB. The coating materials generally used for coating are: Ethyl cellulose; Polyvinyl alcohol; Gelatin; Sodium alginate; The definition has been expanded, and includes most foods, where the encapsulation of flavors is the most common.

The technique of microencapsulation depends on the physical and chemical properties of the material to be encapsulated. Development of Microencapsulation-based Technologies for Micronutrient Fortification in Staple Foods for Developing Countries Yao Olive Li Doctor of Philosophy, Graduate Department of Chemical Engineering and Applied Chemistry University of Toronto ABSTRACT A microencapsulation-based technology platform for effective delivery of multiple Cited by: 4.

The consumption of probiotics has been associated with a wide range of health benefits for consumers. Products containing probiotics need to have effective delivery of the microorganisms for their consumption to translate into benefits to the consumer. In the last few years, the microencapsulation of probiotic microorganisms has gained interest as a method to improve the delivery of probiotics Author: Angel de la Cruz Pech-Canul, David Ortega, Antonio García-Triana, Napoleón González-Silva, Rosa Lidi.

Core material is dispersed in a coating material melt rather than a coating solution. Coating solidification (and microencapsulation) is accomplished by spraying the hot mixture into a cool air stream. 26 Airflow There are three modes of contact:.

Microencapsulation is a process in which very tiny droplets or particles of liquid or solid material are surrounded or coated with polymeric, waxy or protective material.

The product obtained by this process is called as micro particles, microcapsules. Particles having diameter between 3 - µm are known as micro particles or microcapsules or. Spray Coating Coating technologies have been used for many years to prepare pharmaceutical capsules in the traditional macro scale.

The particles are tumbled in a pan or other device while the coating material is applied producing capsules we have all used at one time or another.

Today, nano- and microencapsulation are increasingly being utilized in the pharmaceutical, textile, agricultural and food industries. Microencapsulation is a process in which tiny particles or droplets of a food are surrounded by a coating to give small capsules.

These capsules can be imagined as tiny uniform spheres, in which the particles at the. MICROENCAPSULATION TECHNOLGY FOR CORROSION MITIGATION BY SMART COATINGS Jerry Buhrow, Wenyan Li and Scott Jolley ESC-Team QNA Mail Code: ESC Kennedy Space Center, FL Luz M. Calle NASA Mail Code: NE-L2 Kennedy Space Center, FL ABSTRACT A multifunctional, smart coating for the autonomous control of corrosion is being developed based onFile Size: 9MB.

Microencapsulation of the healing agent in the core can be achieved by in situ polymerizing of shell material. This chapter presents a general review on self-healing materials, and particularly, self-healing of epoxy matrices that includes epoxy composite and epoxy coating by microencapsulation : Seng Neon Gan, Nurshafiza Shahabudin.

Microencapsulation is a technology that is used for the protection, stabilization, and the slow release of core materials. studied and well understood coating system is probably the gelatin/gum acacia system.

Other coating systems such as gliadin, heparin/gelatin, carrageenan, chitosan, soy protein. 2 INTRODUCTION Microencapsulation is a commercially successful technology that has been used for controlled-release of active ingredients in pharmaceutical, agricultural, food, and paper industries.1 In recent years, this technology has attracted increased interest from the coatings industry as well as the research communityFile Size: KB.

The iodine is then lost via sublimation. Because iron and iodine have been physically separated by the microencapsulation of the extruded ferrous, most of the iodine is retained even at high temperature and humidity (45 °C and 70% RH; Figure 5 A). However, there is a less well‐defined knowledge of how folic acid is lost in the : Oluwasegun Modupe, Kiruba Krishnaswamy, Levente L.

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Triple fortification of salt with vitamin A, iron, and iodine has been investigated in the past to reduce micronutrient deficiencies in the developing world. The objective is to develop integrated nutrient delivery technology by microencapsulating a self-emulsifying drug delivery system (SEDDS) made ofAuthor: Lana Kwan.

To prevent the release of radioiodine during the reprocessing of used nuclear fuel or in the management of other wastes, many technologies have been developed for iodine capture. The capture is only part of the challenge as a durable waste form is required to ensure safe disposal of the radioiodine.

This work presents the first durability studies in dilute conditions of two AgI-containing Cited by: 1.Microencapsulation is the preferred treatment for debris that can be fully coated on all surfaces, both exterior and interior. Because your hazardous waste is trapped in the crystalline structure of the solidified matrix, there is little chance that the material will be able to interact with outside elements.

Addressing iron and iodine deficiencies together is a challenge, due to interaction between iodine and iron, negating the effect of added iodine. This paper explains the development of an improved microencapsulation‐based technology to produce iron premix, which, when added to iodized salt, is stable and organoleptically by: 3.