• Title/Summary/Keyword: spray drying

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Fabrication and Characterization of Taraxacum platycarpum Extract-loaded Particles for Tablet Dosage Form (정제 제형 제조를 위한 포공영 추출물 함유 분말의 제조 및 평가)

  • Jin, Sung Giu
    • Journal of Powder Materials
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    • v.26 no.3
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    • pp.225-230
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    • 2019
  • To develop Taraxacum platycarpum extract (TP)-loaded particles for tablet dosage form, various TP-loaded particles composed of TP, dextrin, microcrystalline cellulose (MCC), silicon dioxide, ethanol, and water are prepared using a spray-drying method and fluid-bed-drying method. Their physical properties are evaluated using angle of repose, Hausner ratio, Carr's index, hardness, disintegrant time, and scanning electron microscopy. Optimal TP-loaded particles improve flowability and compressibility. Furthermore, 2% silicon dioxide gives increased flowability and compressibility. The formula of TP-loaded fluid-bed-drying particles at a TP/MCC/silicon-dioxide amount of 5/5/0.2 improves the angle of repose, Hausner ratio, Carr's index, hardness, and disintegrant time as compared with the TP-loaded spray-drying particles. The TP-loaded fluid-bed-drying particles considerably improve flowability and compressibility ($35.10^{\circ}$ vs. $40.3^{\circ}$, 0.97 vs. 1.17, and 18.97% vs. 28.97% for the angle of repose, Hausner ratio, and Carr's index, respectively), hardness (11.34 vs. 4.7 KP), and disintegrant time (7.4 vs. 10.4 min) as compared with the TP-loaded spray-drying particles. Thus, the results suggest that these fluid-bed-drying particles with MCC and silicon dioxide can be used as powerful particles to improve the flowability and compressibility of the TP.

Fabrication of Agglomerated Cr$_2$O$_3$ Powder for Plasma Spray Coating by Spray Drying Process (분무 건조법에 의한 프라즈마 용사를 Cr$_2$O$_3$조립 분말 제조)

  • 이동원
    • Journal of Powder Materials
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    • v.5 no.1
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    • pp.28-34
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    • 1998
  • Plasma sprayed ceramic coatings are widely used in various industrial fields to improve their properties or to reduce the production cost. The ceramic powders for plasma spray coating have been mainly manufactured by spray drying or fused+crushed process. In this study, chromium oxide which has better mechanical properties than those of the other ceramic was selected and agglomerated chromium oxide powders for plasma spray coating were produced by spray drying process with a various processing condition. The large hollow powders and the harsh surfaced powders are formed at high slurry feed rate more than 163 g/min. and low binder concentration less than 2wt%, respectively. These powders cause the considerable decrease of flowability and apparent density. The powders produced by spray drying process have the spherical shape with the mean size of 45 ${\mu}m$, but these are shown lower apparent density and flowability than the powders produced by fused+crushed powders. The plasma spray coated layers by spray dried powders are shown a different microstructure with that by fused+crushed powders in porosity shape, but their properties such as density, hardness and bond strength are similar.

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Drying of Citron Juice from By-product of Citron Tea Manufacturing (유자차 부산물인 유자즙의 분말화 연구)

  • 남혜원;현영희
    • The Korean Journal of Food And Nutrition
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    • v.16 no.4
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    • pp.334-339
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    • 2003
  • To increase the utilization of citron, citron juice that is by-product of citron tea was spray dried and freeze dried. Cyclodextrin(CD) was used as wall material to stabilize during drying. The physiochemical properties of citron juice were as follows: water content of 82.3%, pH of 2.45, and there were little different in two kinds of drying or CD added in different ratio. Citric acid, malic acid, succinic acid and lactic acid were detected in all of the samples. Spray and freeze-drying increased markedly yellowness compared to that of citron juice. Heat stability was reduced by both of two kinds of drying, and CD 15% was more decreased than CD 10%. Water uptake by freeze-drying was somewhat higher than that of spray-drying. When sensory properties of original citron juice was compared with those of spray and freeze dried, freeze drying with 10% of cyclodextrin was evaluated as superior to citron juice or other drying conditions.

Effect of Process Parameters on the Morphology and Size of Spray-Dried Granule Powder for Fabrication of SiAlON Raw Material (SiAlON 원료분말제조를 위한 분무건조 과립분말의 형상과 크기에 미치는 공정변수효과)

  • Choi, Jae-Hyeong;Lee, Soyul;Han, Yoonsoo;Lee, Sung-Min;Nahm, Sahn;Kim, Seongwon
    • Korean Journal of Materials Research
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    • v.27 no.12
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    • pp.716-721
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    • 2017
  • SiAlON-based ceramics are some of the most typical ceramic materials used as cutting tools for HRSA(Heat Resistant Super-Alloys). SiAlON can be fabricated using ceramic processing, such as mixing, granulation, compaction, and sintering. Spray drying is a widely-used method for producing a granular powder of controlled morphology and size with flowability. In this study, we report a systematic investigation aimed at optimizing spherical granule morphology by controlling spray-drying parameters such as gas flow and feed rate. Before spray drying, the viscosities of the raw material slurries were also optimized with the amount of dispersant added.

Synthesis and Properties of ITO Nano Powders by Spray Drying Process (분무건조법에 의한 ITO 나노분말의 합성과 특성)

  • 허민선;최철진;권대환
    • Journal of Powder Materials
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    • v.11 no.1
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    • pp.22-27
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    • 2004
  • The Indium Tin Oxide(ITO) nano powders were prepared by spray drying and heat treatment process. The liquid solution dissolved Indium and Tin salts was first spray dried to prepare chemically homogeneous recursor powders at the optimum spray drying conditions. Subsequently, the precursor powders were subjected to eat treatment process. The nano size ITO powders was synthesized from the previous precursor powders and the npuities also were decreased with increasing heat treatment temperature. Furthermore, the lattice parameter of TO nano powders was increased by doping Tin into Indium with increasing heat treatment temperature. The par icle size of the resultant ITO powders was about 20∼50nm and chemical composition was composed of In:Sn =86:10 wt.% at 80$0^{\circ}C$.

Effect of Drying Methods on Physicochemical Characteristics and Functional Properties of Duck Blood Gel

  • Kim, Jake;Kim, Tae-Kyung;Cha, Ji Yoon;Ku, Su-Kyung;Jung, Samooel;Choi, Yun-Sang
    • Food Science of Animal Resources
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    • v.42 no.5
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    • pp.861-873
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    • 2022
  • The drying of duck blood provides safety and commercial benefits, but each drying method has its own characteristics. Moreover, information on the effects of diverse drying methods on the quality of duck blood is limited. This study aimed to investigate the effects of various drying methods on the chemical and functional properties of duck blood. The physicochemical characteristics and functional properties of duck blood subjected to spray drying (SD), freeze drying (FD), vacuum drying (VD), and hot air drying (HD) were examined. The carbonyl content of FD duck blood powder was the lowest and the thermal stability was higher than that of the other treatments (p<0.05). The gel obtained from spray-dried blood displayed the lowest malondialdehyde content. The hardness, gumminess, and chewiness were the highest in the heat-induced gel prepared from FD duck blood powder (p<0.05). The gel obtained from FD duck blood displayed a denser structure than the other gel samples. Taken together, the FD duck blood exhibited excellent chemical properties and processing suitability.

Optimization of Pine Flavor Microencapsulation by Spray Drying

  • Lee, Shin-Jo;Lee, Yang-Bong;Hong, Ji-Hyang;Chung, Jong-Hoon;Kim, Suk-Shin;Lee, Won-Jong;Yoon, Jung-Ro
    • Food Science and Biotechnology
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    • v.14 no.6
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    • pp.747-751
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    • 2005
  • Microencapsulation of pine flavors was investigated to determine the optimum wall material and spray drying condition. ${\beta}$-Cyclodextrin, maltodextrin, and a 3:1 mixture of maltodextrin and gum arabic were evaluated as wall materials. The latter mixture was determined to be the best wall material based on dispersion capacity and flavor yield. Spray drying effectiveness was evaluated using a $3^3$ fraction factorial design and statistical analysis. The optimum operation condition was an inlet air temperature of $175^{\circ}C$, inlet airflow rate of $0.65\;m^3/min$ and atomizing pressure of 180 kPa, which resulted in a 93% flavor yield. The best particle shape observed by SEM was a round globular shape obtained under the above spray drying condition, whereas lower temperatures and higher inlet airflow rates resulted in initial and full collapses, respectively. The round globular shapes remained stable for at least one month.

Synthesis and Characterization of Cathode Materials for the Lithium Secondary Batteries by Spray Drying Method

  • Oh, Si-Hyoung;Jeong, Woon-Tae;Cho, Won-Il;Cho, Byung-Won
    • Journal of the Korean Electrochemical Society
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    • v.8 no.1
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    • pp.42-46
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    • 2005
  • It has been known that the synthesis of the cathode materials for the lithium rechargeable batteries by the sol-gel process has many advantages over the conventional solid-state method. It has been, however, a continuing issue that new additional steps should be introduced to commercialize this process. In this work, spray drying was introduced to the existing sol-gel process as a continuous mass production method of the pre-heat treatment precursor materials. The precursors of $LiCoO_2$ and $LiNi_{0.8}Co_{0.2}O_2$ were continuously produced through spray drying from the solution containing stoichiometric amount of lithium, cobalt, and nickel sources as well as a chelating agent. The process variables, such as pH of the starting solution, spray drying conditions, and calcination conditions were optimized. The XRD pattern for the synthesized material indicated a good crystallinity with a layered structure.

Analysis of Microencapsulation Yield of Sardine Oil Spray Drying (분무건조방법으로 미세캡슐화된 정어리기름의 수율 측정)

  • 신명곤;서자영
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.28 no.1
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    • pp.274-276
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    • 1999
  • Sardine oil was microencapsulated by spray drying method in wall systems containing corn syrup in combination with sodium casein or wheat protein. Analysis of microencapsulation yield of sardine oil was carried out by a modified soxhlet method which could reduce the extraction time of surface oil. Microencapsulation yield of sardine oil was ranged from 65.3 to 93.5 % depending on the sodium casein content.

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