Spray drying: An overview on wall deposition, process and modeling

Keshani, Samaneh; Daud, Wan Ramli Wan; Mobarekeh, Mohsen Nourouzi; Namvar, Farideh; Ghasemi, Mostafa

doi:10.1016/j.jfoodeng.2014.09.004

Cited by 175 publications

(113 citation statements)

References 101 publications

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“…Umpan dapat berupa suspense, emulsi dan pasta dimana sifat properti dari powder tergantung pada sifat fisik dan kimia (Keshani et al, 2015). Kelebihan lain dari spray drying adalah kemampuannya untuk menghasilkan powder dengan ukuran partikel dan kadar air tertentu, terlepas dari kapasitas dryer.…”

Section: Pendahuluanunclassified

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The Influence of Coating Material Difference Against Encapsulation Efficiency of Red Ginger Oleoresin

et al. 2017

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ABSTRAKTujuan penelitian ini adalah untuk mengetahui pengaruh perbedaan bahan penyalut terhadap efisiensi enkapsulasi oleoresin jahe merah dan karakterisasi permukaan mikrokapsul. Proses enkapsulasi diawali dengan melarutkan kitosan dalam asam asetat 1 % dan melarutkan sodium alginate menggunakan akuades yang akan digunakan sebagai bahan penyalut. Oleoresin jahe merah dimasukan dalam larutan alginate kemudian diaduk, selanjutntnya campuran dimasukan ke dalam larutan kitosan dan ditambahkan tween 80 dan diaduk menggunakan homogenizer untuk membuat emulsi. Emulsi yang terbentuk dimasukan dalam spray dryer untuk dikonversi menjadi bubuk mikrokapsul kemudian analisis efisiensi enkapsulasi dan morfologi permukaan mikrokapsul menggunakan scanning electron microscopy (SEM). Perbedaan bahan penyalut yang digunakan yaitu kitosan, campuran kitosan-alginat dan campuran kitosan-alginat-sodium tripolifosfat (STPP). Rasio berat oleoresin dengan bahan penyalut adalah 1:1, 1:2 dan 1:3. Efisiensi enkapsulasi tertinggi diperoleh pada bahan penyalut campuran kitosan-alginat-sodium tripolifosfat (STPP) dengan rasio 1 : 3 yaitu sebesar 85,714 %.Kata kunci: efisiensi enkapsulasi, kitosan, oleoresin jahe merah, sodium alginat. ABSTRACTThe purpose of this study was to determine the effect of coating materials on the efficiency of red ginger oleoresin encapsulation and characterization of microcapsule surface. The encapsulation process was started by dissolving chitosan with 1 % (v/v) acetic acid and dissolving sodium alginate using aquadest as a coating material. Red ginger oleoresin was mixed with alginate and then homogenously stirred with chitosan solution and Tween 80 to make an emulsion. The emulsion was converted to a powder of microcapsules using spray dryer. The encapsulation efficiency and surface morphology of microcapsules was analyzed using scanning electron microscopy (SEM). The coating

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Section: Pendahuluanunclassified

“…Kelebihan lain dari spray drying adalah kemampuannya untuk menghasilkan powder dengan ukuran partikel dan kadar air tertentu, terlepas dari kapasitas dryer. Spray dryer dapat dioperasikan secara kontinyu dan mudah dengan dikendalikan secara otomatis dan waktu yang singkat (Keshani et al, 2015).…”

Section: Pendahuluanunclassified

The Influence of Coating Material Difference Against Encapsulation Efficiency of Red Ginger Oleoresin

et al. 2017

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“…So, it is recommendend, for the tilapia hydrolyzate, dryer operation with lower flow and temperature, within the average range employed in this work. In a review conducted by Keshani, Daud, Nourouzi, Namvar, and Ghasemi (2015), several authors present some effects relating the operating temperature and the physical properties of the liquid to the drying chamber geometry and to the residence time of the liquid inside the chamber. Liquids with higher viscosity adhere more easily to the walls of the dryer.…”

Section: Resultsmentioning

confidence: 99%

“…It reduces the evaporation rate of the liquid and provides extra adherence of the product to the dryer wall. To compensate for this effect and reach the desired moisture, if the temperatures in the chamber are raised, the surface temperature of the particles adhered to the wall can exceed the glass transition of the product, leading to lower quality powder (Roos & Karel, 1991;Bhandari, Datta, Crooks, Howes, & Rigby, 1997;Ozmen & Langrish, 2003;Aguilera & Lillford, 2007;Shrestha, Howes, Adhikari, & Bhandari, 2008;Roos, 2009;Woo, Daud, Tasirin, & Talib, 2009;Keshani et al, 2015). The estimated effects for the evaluated variables, with the moisture as a response, are listed in Table 3.…”

Section: Resultsmentioning

confidence: 99%

“…For higher values of IT and lower values of VF, the final product showed a darkened aspect, which is not acceptable commercially. The lower the value of VF, the longer residence time of droplets inside the chamber and, with elevated IT, temperature on the surface of the particle tends to exceed the limit of glass transition of the product (Keshani et al, 2015). Although the statistic analysis and the response surfaces in Figure 2 have indicated that to obtain a product with lower moisture, the system should be operated with high IT and low VF, the protein concentrate in its powder form must follow specific laws that determine the maximum acceptable limits of moisture.…”

Section: Resultsmentioning

confidence: 99%

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<b>Production and spray drying of protein hydrolyzate obtained from tilapia processing by-products

et al. 2016

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ABSTRACT. In the last few decades, the offer of by-products obtained from the processing of tilapia (Oreochromis niloticus) has increased, and the need for developing products with high biological and nutritional values for use in animal nutrition motivated this study. Enzymatic hydrolysis of carcass, head and skin of tilapia was performed, as well as the separation of oil, residual solids and soluble proteins by centrifugation at high temperature and the spray drying of the protein fraction. Factorial designs were employed in the assays to evaluate the operating conditions of the spray dryer (inlet and outlet temperatures and flow rate) and the inclusion of drying aid agents (maltodextrin and calcium carbonate). The spray drying showed the best results with air inlet temperature of 190ºC, outlet temperature of 90ºC, flow rate of 30 L·h -1 including 10% maltodextrin (mass) in the liquid feed as a drying aid. The final powder recovery was higher than 90% and the physical, chemical and microbiological analyses met the Brazilian legal standards.

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Modeling approach for spray drying and encapsulation applications

Anandharamakrishnan

Ishwarya

2015

Spray Drying Techniques for Food Ingredient Encapsulation

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Spray drying: An overview on wall deposition, process and modeling

Cited by 175 publications

References 101 publications

The Influence of Coating Material Difference Against Encapsulation Efficiency of Red Ginger Oleoresin

The Influence of Coating Material Difference Against Encapsulation Efficiency of Red Ginger Oleoresin

<b>Production and spray drying of protein hydrolyzate obtained from tilapia processing by-products

Modeling approach for spray drying and encapsulation applications

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