• Preventive Nutrition and Food Science
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• 제18권1호
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• pp.60-66
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• 2013

The whole saltwort plant (Salicornia herbacea) was micronized to develop the table salt substitute. The micronized powder was mixed with distilled water and made into a spherical granule by using the fluid-bed coater (SGMPDW). The SGMPDW had superior flowability to powder; however, it had low dispersibility. To increase the dispersibility of SGMPDW, the micronized powder was mixed with the solution, which contained various soluble solid contents of saltwort aqueous extract (SAE), and made into a spherical granule (SGMPSAE). The SGMPSAE prepared with the higher percentages of solid content of SAE showed improved dispersibility in water and an increase in salty taste. The SGMPSAE prepared with 10% SAE was shown to possess the best physicochemical properties and its relative saltiness compared to NaCl (0.39). In conclusion, SGMPSAEs can be used as a table salt substitute and a functional food material with enhanced absorptivity and convenience.

• 약학회지
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• 제18권4호
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• pp.236-242
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• 1974

Extrusion-spheronization processing combination was used to produce spherical granules with experimental formulations which contain microcrystalline cellulose as a diluent. The produced granules were compared on the basis of the following physical properties ; (a) bulk density, (e) porosity, (f) friabillity and (g) dissolution rate. With the specific experimental formulations used in this study, the increased plate rotational speeds of Marumerizer (400-1200rpm) produced continually more spherical material and also the obtained data indicated that the particle size distribution and dissolution rate depend upon the amount of microcrystalline cellulose used. As a result, the spherical granule preparation with microcrystalline cellulose has good properties in flow rate, packing propertyu and friability and offers a suitable method of granule preparation in pharmaceutical industry.

• 한국세라믹학회지
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• 제53권5호
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• pp.557-562
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• 2016

Pyrophyllite granule powders for thermal spray coating were successfully prepared through spray drying process. To produce a stable slurry, commercial pyrophyllite powder of $45{\mu}m$ in size was ball-milled for reduction of the size to $2{\sim}3{\mu}m$ and a dispersant was added to control the viscosity. Dense and spherical granules (average granule size : $59{\mu}m$) were prepared under conditions of 12,500 rpm for rotation velocity of the atomizer and 100 cps for slurry viscosity. The granules were then heat treated at $1,200^{\circ}C$ for proper handling strength and flow properties. The final granules had an apparent density of $0.725g/cm^3$ and a flow rate of 2.5 g/sec, which represent excellent properties to be used as the granule powder for thermal spray coatings.

• 한국세라믹학회지
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• 제32권5호
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• pp.549-558
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• 1995

Mn-Zn ferrite granules were prepared by spray drying of the slurry containing different kinds and concentration of binders at various spray drying temperatures and atomizing pressures. The characteristics of the spraydried granules were analyzed according to the processing variables of spray drying and the slurries containing different solid loading and kinds and concentration of binders. Typical shape of the spray dried granules was spherical. The granules spray dried at 15$0^{\circ}C$ were more spherical and containing lower hollow percentage than any other granules prepared at higher temperature. The granules prepared at higher atomizing pressures were more spherical and become smaller in size. The granules prepared using slurry containing higher solid loading were larger in size and less defective in shape. As increasing the concentration of binder the number of donut-shaped granules was increased and the size distribution become broader. The granules prepared using the slurry containing PVA 205 were more spherical than those containing PVA 217 and PVA 117. As the amount of granules which were donut-shaped or dimpled increased the compaction response were less effective. The hollows were not fractured completely even at hight pressures and remained after sintering.

• 한국재료학회지
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• 제27권12호
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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.

• Journal of Pharmaceutical Investigation
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• 제8권1호
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• pp.27-36
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• 1978

Spherical granules of anti-inflammatory enzyme were prepared by mixer granulation and the recovery rate of enzyme activity by processing was compared with tablet ones. In the enteric granule coating .processing, the effect of the amount of coating solution and the conentration of fatty alcohol on disintegration and stabilities on the accelerated conditions were also studied. Being prepared in non-pressure and non-aqueous condition, spherical granules of enzyme made better recovery of enzme activity than tablet ones by 10 times. Combined processing of both mixer granulation and enteric granule film coating provided the noble enteric coated granules, in the sense of disintegration and stabilities, was obtained from using 0.125% fatty alcohol in coating solution.

• Journal of Ceramic Processing Research
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• 제13권spc1호
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• pp.145-148
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• 2012

Spherical silica aerogel powders were fabricated via an emulsion polymerization method from a water glass. A water-in-oil emulsion, in which droplets of a silicic acid solution are emulsified with span 80 (surfactant) in n-hexane, was produced by a high power homogenizer. After gelation, the surface of the spherical silica hydrogels was modified using a TMCS (trimethylchlorosilane)/n-hexane solution followed by solvent exchange from water to n-hexane. Hydrophobic silica wet gel droplets were dried at 80 ℃ under ambient pressure. A perfect spherical silica aerogel powder between1 to 12 ㎛ in diameter was obtained and its size can be controlled by mixing speed. The tapping density, pore volume, and BET surface area of the silica aerogel powder were approximately 0.08 g·cm-3, 3.5 ㎤·g-1 and 742 ㎡·g-1, respectively.

• 한국분말재료학회지
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• 제24권2호
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• pp.147-152
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• 2017

Spherical-type zirconia granules are successfully fabricated by a spray-drying process using a water solvent slurry, and the change in the green density of the granule powder compacts is examined according to the organic polymers used. Two organic binders, polyvinyl alcohol (PVA) and 2-hydroxyethyl methacrylate (HEMA), which are dissolved in a water solvent and have different degrees of polymerization, are applied to the slurry with a plasticizer (polyethylene glycol). The granules employing a binder with a higher degree of polymerization (PVA) are not broken under a uniaxial press; consequently, they exhibit a poor green density of $2.4g/cm^3$. In contrast, the granule powder compacts employing a binder with a lower degree of polymerization (HEMA) show a higher density of $2.6g/cm^3$ with an increase in plasticizer content. The packing behavior of the granule powders for each organic polymer system is studied by examining the microstructure of the fracture surface at different applied pressures.

• 한국세라믹학회지
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• 제56권5호
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• pp.443-452
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• 2019

In this study, TiO₂-polyvinyl alcohol (PVA) composite granules were prepared via spray drying technique. To investigate the effects of solid content and binder/powder ratio in the slurry on the granulation behavior of TiO₂ powders, the feed compositions were designed to vary over a wide range. The morphology, actual densities, and average granule size and size distribution of the TiO₂-PVA composite granules were characterized by using scanning electron microscopy technique, a gas pycnometer, and an image analyzing program (Image-J), respectively. The results indicate that solid content and the amount of PVA in the feedstock slurry are the dominant factors determining the granule morphology, size, and size distribution of TiO₂-PVA composite. Moreover, it was observed that increasing the solid content and the amount of PVA in the slurry improved the granulation process and reduced the granule defects. For the preparation of spherical TiO₂-PVA composite granules with the minimum amount of non-granulated powders, the optimized composition of the feedstock slurry was found to be 35 wt.% solid and 3 wt.% PVA.

• 한국식품영양과학회지
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• 제45권8호
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• pp.1153-1161
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• 2016

흡습이 방지된 발효홍삼 농축액 알갱이를 제조하기 위해 홍삼의 지용성 추출액인 PSE(perfect soluble part in 70% ethanol)와 NSHW(not soluble part in hot water)를 70% 주정에 고형분 함량이 10%가 되도록 한 후 발효홍삼 농축액 알갱이를 유동하면서 이들을 발효홍삼 농축액 알갱이의 5%가 되도록 코팅하였다. PSE로 발효홍삼 농축액 알갱이를 코팅할 때 가장 중요한 인자는 feeding rate(FR)였고, NSHW는 FR${\times}$atomization air pressure(AP)임을 알 수 있었다. PSE와 NSHW를 이용하여 코팅된 발효홍삼 농축액 알갱이 제조 방법의 최적화 조건은 각각 FR 0.49 mL/min, AP 2.14 bar, product temperature(PT) $48.96^{\circ}C$에서 수율이 96.39%, FR 0.61 mL/min, AP 2.75 bar, PT $46.30^{\circ}C$에서 수율이 95.36%였다. 발효홍삼 농축액 알갱이의 용해성은 NSHW와 PSE로 코팅한 발효홍삼 농축액 알갱이가 코팅하지 않은 것보다 낮음을 알 수 있었다. 홍삼의 지용성 성분의 코팅이 발효홍삼 농축액 알갱이의 흐름성(편리성)에 크게 영향을 미치지 않았으나 흡습성은 방지되는 것을 알 수 있었으며 PSE보다 NSHW가 더 흡습방지에 효율적이었다. 총진세노사이드 함량은 홍삼의 지용성 성분으로 코팅하였을 때와 하지 않았을 때 통계적으로 차이가 없었지만, 지용성 성분을 코팅한 발효홍삼 농축액 알갱이의 진세노사이드 함량이 코팅하지 않은 발효홍삼 농축액 알갱이보다 진세노사이드 Rb1 함량은 높고 진세노사이드 Rg1의 함량은 낮은 값을 나타내었다. 관능특성 분석 결과 홍삼에서 분획된 지용성 추출물의 코팅은 손에 잘 묻지 않고 입안에서 잘 안 녹으며, 쓴맛이 오래가는 특징을 갖는 것을 알 수 있었다. 기호도 평가 결과 홍삼에서 분획된 지용성 추출물로 코팅한 발효홍삼 농축액 알갱이를 선호하지 않음을 알 수 있었다. 홍삼의 지용성 성분을 분획하여 제조한 PSE와 NSHW로 발효홍삼 농축액 알갱이를 코팅하였을 때 소비자들의 선호도는 낮았지만 흡습방지 효과는 높은 것을 알 수 있었다.