• 한국식품과학회지
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• 제24권4호
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• pp.387-392
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• 1992

미역 추출액의 고형분과 단백질의 수율 및 농도를 증가시키기 위하여 HCl, 설탕, 소금, EDTA, SHMP를 첨가하여 추출액의 품질 특성에 미치는 영향을 조사하였다. 추출액은 분말 미역을 첨가하여 2시간 끓인 후 원심 분리하였다. $0.1{\sim}0.5N$ HCl를 첨가하였을 때 고형분과 단백질 수율 및 상징액율은 현저히 증가하였다. 산처리를 하지 않는 대조구의 고형분과 단백질 수율 23.20%와 4.87%에서 각각 52.48%와 36.73%로 증가하였으며 점도는 450 cps에서 20 cps 이하로 감소하였다. 설탕, 소금, SHMP, $Na_2EDTA$를 $0.5{\sim}3.0%$ 첨가하였을 때 고형분 농도와 수율은 $Na_2EDTA-SHMP-sucrose-NaCl$ 순으로 현저히 증가하였으며, $Na_2EDTA$ 3% 첨가하였을 때 고형분 수율은 55%로 가장 높았고 점도와 탁도는 SHMP와 $Na_2EDTA$ 첨가시 감소하였다.

• KSBB Journal
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• 제4권2호
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• pp.99-103
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• 1989

활엽수의 헤미셀룰로오스를 autohydrolusisgkdu 얻은 용액을 초강 산고체, Nafion을 사용하여 2차 가수분해시키는 반응에 관한 Kinetics를 고찰했다. 연속 column반응기를 사용해 얻을 수 있는 최대 xylose수율은 약 90%이였다. 양이온 물질이 제거된 feed를 사용하면 Nation은 안정된 가수분해 촉매를 사용될 수 있음이 판명되었다.

• Food Science and Biotechnology
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• 제18권6호
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• pp.1545-1547
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• 2009

The fiber-rich fractions including enzyme treated insoluble dietary fiber, alcohol insoluble solid, and water insoluble solid were prepared from the peel of soft ripe persimmon, and to evaluate and compare the yields, proximate compositions, monosaccharide profiles, and functional properties. The results showed that uronic acid was the main sugar followed by glucose, which indicated that all insoluble fibers were mainly composed of pectic substances and cellulose. The presence of xylose and fucose indicated the occurrence of hemicellulose. All fiber-rich fractions were exhibited high yield and functional properties. Thus, the peel of ripe persimmon could be used as fiber supplements.

• Bulletin of the Korean Chemical Society
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• 제13권2호
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• pp.187-192
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• 1992

The classical trajectory method, previously applied to the reactions of polyatomic molecules with fcc structured metal solids[S. C. Park, C. H. Cho, and C. H. Rhee, Bull. Kor. Chem. Soc., 11, $1(1990)]^1$ is extended to the collision energy dependence of the reaction of the Al solid by $SiCl_4$ molecules. We have calculated etching yields, degrees of anisotropy, kinetic energy distributions, and angular distributions for the reactions of the Al solid and compared with those for the reactions of the Cu solid. Over the range of collision energies we considered, the reactions of the Al soIid show higher etching yield and better anisotropy than the reactions of the Cu solid. Details of reaction mechanisms and the relevance of these calculations for the dry etching of CuAl alloy are discussed.

• KSBB Journal
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• 제18권6호
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• pp.500-505
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• 2003

재조합 대장균에서 내포체 형태로 발현시킨 LK68을 생물학적 활성을 가진 native한 단백질로 재생시키기 위해서 PBA 크로마토그래피와 EBA 크로마토그래피를 이용한 고체상 재접힘을 수행하였다. 내포체와 세포파쇄액을 시작물질로 하여 재접힘 공정을 수행하였으며 총 단백질 회수율과 재접힘 수율을 비교한 결과, EBA 공정이 기존의 액상 재접힘이나 PBA를 이용한 재접힘 공정에 비하여 우수함을 확인하였다. 또한 Iysine binding, RP-HPLC, SEC-HPLC, Ellman method 등을 사용하여 분석한 결과 재접힘된 LK68이 native LK68와 동등함을 확인하였다. 본 연구를 통해 EBA 크로마토그래피를 이용한 재접힘 방법은 재접힘 단계의 수율을 향상시킬 뿐 아니라 공정 단계, 시간 등을 감소시켜 공정 성능을 전체적으로 향상시킬 수 있음을 제시하였다.

• 대한화학회지
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• 제68권2호
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• pp.82-86
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• 2024

This paper presents the solid-state synthesis of insoluble Prussian blue (Fe₄[Fe(CN)₆]₃·xH₂O, PB) in a ball mill, utilizing the fundamental components of PB. Solid-state synthesis offers several advantages, such as being solvent-free, quantitative, and easily scalable for industrial production. Traditionally, the solid-state synthesis of PB has been limited to the reaction between iron(II/III) ions and hexacyanoferrate(II/III) complex ions, essentially an extension of the solution-based coprecipitation method to solid-state reaction. Taking a bottom-up approach, a reaction is designed where the reactants consist of the basic building blocks of PB: Fe²⁺ ions and CN^- ions. The reaction, with a molar ratio of Fe²⁺ and CN^- corresponding to 1:2.8, yields PB, while a ratio of 1:6.6 results in a mixture of potassium hexacyanoferrate(II) (K₄Fe(CN)₆), potassium chloride (KCl), and potassium cyanide (KCN). This synthetic approach holds promise for environmentally friendly methods to synthesize multimetallic PB with maximum entropy in nearly quantitative yield.

• Bulletin of the Korean Chemical Society
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• 제25권11호
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• pp.1667-1670
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• 2004

In DNA microarray produced by DNA-deposition technology, DNA-immobilization and -hybridization yields on a solid support are most important factors for its accuracy and sensitivity. We have developed a dendrimeric support using silylated aldehyde slides and polyamidoamine (PAMAM) dendrimers. An oligonucleotide array was prepared through a crosslinking between the dendrimeric support and an oligonucleotide. Both DNAimmobilization and -hybridization yields on the solid support increased by the modification with the dendrimers. The increase of the immobilization and hybridization efficiency seems to result from a threedimensional arrangement of the attached oligonucleotide. Therefore, our dendrimeric support may provide a simple and efficient solution to the preparation of DNA microarrays with high-density DNA-deposition and high hybridization efficiency.

• Bulletin of the Korean Chemical Society
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• 제32권2호
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• pp.635-638
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• 2011

A simple and efficient method for the synthesis of $\beta$-amino carbonyl compounds by one-pot three-component Mannich reaction of acetophenone, aromatic aldehydes and aromatic amines using a carbon-based solid acid (CBSA), as an effective and reusable catalyst, is described. The present methodology offers several advantages such as simple procedure with an easy work-up, shorter reaction times, and high yields.

• Journal of the Optical Society of Korea
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• 제15권1호
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• pp.56-60
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• 2011

We demonstrate passive mode-locking of a Cr:forsterite laser with a single-walled carbon nanotube saturable absorber mirror (SWCNT-SAM). Without compensation of intra-cavity dispersion, the self-mode-locked laser generates 11.7 ps pulses at a repetition rate of 86 MHz. The dispersion-compensated laser yields ultrashort pulses as short as 80 fs near $1.25\;{\mu}m$ at 78 MHz with average output powers up to 295 mW, representing the highest power ever reported for mode-locked solid-state lasers based on saturable absorption of SWCNTs in this spectral region.

• 한국식품과학회지
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• 제31권5호
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• pp.1211-1215
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• 1999

마늘을 물로 추출할 때 효소분해와 pH, 그리고 유기산, 유기 또는 무기염의 첨가가 추출액의 고형분 수율과 색에 미치는 영향을 조사하였다. 그 결과 상업적다당류 분해효소에 의한 가수분해는 고형분 수율을 $15{\sim}20%$ 증가시켰으나 녹변현상이 더 발생하였고 노란색과 밝기가 감소되었다. 추출시 pH의 조정은 수율에는 큰 영향이 없었지만, $4.4{\sim}5.0$의 범위에서 녹색의 강도가 증가되어 적절치 않았다. 여러가지의 염과 유기산의 첨가 결과, $CaCl_2$와 sodium oxalate, tartaric acid, phosphoric acid가 수율 향상에 효과적이었으며, $K_{4}P_{2}O_{7}$은 수율향상과 녹변방지에 효과가 있었다.