• YAKHAK HOEJI
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• v.43 no.4
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• pp.423-428
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• 1999

Two polysaccharides, ACP-UMP and ACP-ULF, were purified from the aerial part of Artemisia capillaris by anion-exchange chromatography, ultrafiltration, and gel filtration chromatography. The polysaccharides appeared to be homogenious from the results of HPLC. The molecular weights of ACP-UMF and ACP-ULF were estimated to be 16305.92 D and 3292.26 D, respectively, by MALDI-TOF MS. The sugar compositions were determined by GC to be arabinose 10.05%, xylose 1.67%, mannose 5.45G, galactose 39.06%, glucose 15.43% for ACP-UMF and arabinose 11.60%, xylose 11.15%, mannose 6.37% galactose 32.47%, glucose 18.35% for ACP-ULF. A polysaccharide, SP-M was determined to be 2462.52 D by MALDI-TOF MS. SP-M consisted mainly of rhamnose 36.49%, arabinose 29.00%, and glucose 19.38%. Incubation of CCl4-intoxicated hepatocytes with ACP-UMF reduced the levels of glutamic pyruvic transaminase (GPT) and cellular malondialdehyde (MDA) to 62.8% and 23.8%. ACP-ULF also reduced the levels of GPT and MDA to 46.1% and 38.1% and 26.3%, respectively.

• Bulletin of the Korean Chemical Society
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• v.24 no.9
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• pp.1308-1312
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• 2003

Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) was used to observe folic acid and its derivatives such as tetrahydrofolate and 5-methyltetrahydrofolate in a vitamin tablet and in foods. Folic acid in a vitamin tablet was determined using angiotensin I as an internal reference. Tetrahydrofolic acid, 5-methyltetrahydrofolic acid, and an oxygenated folate were observed from a human blood sample using graphite plate. The results show that these mass spectrometric methods are useful for quickly obtaining a profile of folates.

• Elastomers and Composites
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• v.42 no.1
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• pp.1-8
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• 2007

The cleavage of fullerene oxides with several aromatic amines such as 4-nitroaniline, 3-nitroaniline, 4-isopropylaniline in the present of $FeCl_3$ occurred under ultrasonic irradiation in air at $25{\sim}43^{\circ}C$. The aminated fullerenes were confirmed by MALDI-TOF-MS and UV-vis spectra.

• Polymer(Korea)
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• v.26 no.5
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• pp.568-574
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• 2002

Inclusion compounds using cyclic poly(oxyethylene)s as host molecules have been used to polymerize pyrrole chemically in aqueous medium. This general synthetic strategy makes it possible to grow rigid aromatic polymers in aqueous medium by chemical oxidation method. It is an easy method to obtain rigid polymers in a very mild manner. Some threaded and water-soluble polypyrroles are obtained, and their characterization is performed by NMR, IR, UV, and MALDI-TOF MS measurements.

• Reproductive and Developmental Biology
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• v.37 no.4
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• pp.247-253
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• 2013

Here, we present an approach of blood plasma proteome profiling and their comparisons between the young and the adult pigs as prerequisite for the identification of bio-markers related to the health conditions, growth performance and meat quality. To profile the proteome in porcine plasma, blood samples were collected from 19 young piglets and 20 adult male barrows and the plasma was retrieved. Then, protein profiling was initiated using one and two-dimensional electrophoresis. Proteins were spotted and then identified by MALDI-TOF-TOF and LC-MS-MS. In the results, more than thirty-six and twenty eight protein spots were selected in young piglets and adult pigs, respectively and twenty three proteins were identified. The proteome profile images were compared between those ones using Image Master Version 7.0. The image of expressed proteome showed that most of proteins from plasma of young piglet separated clearly and concentrated in 2DE display compared to ones from adult. Image analysis in detail was carried out to look for the specific proteins related to age progression. It demonstrated that the characteristics of proteome expression could be distinct to their age stages. Further investigations needed to proceed to understand the age dependent change of protein conformation and biological meaning of those differences in proteome expression between young and mature adult pigs.

• Elastomers and Composites
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• v.40 no.3
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• pp.174-180
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• 2005

Sonochemical synthesis of fullerene oxides $[C_{70}O_n](n=1{\sim}2)$ by fullerene$[C_{70}]$ and metal hexacarbonyl complexes $M(CO)_6$(M=Cr, Mo, W) took place under air atmosphere. The reactivity of fullerene$[C_{70}]$ and several metal hexacarbonyl complexes $M(CO)_6$(M=Cr, Mo, W) under same ultrasonic condition increased in the order of $Mo(CO)_6$ > $W(CO)_6$ > $Cr(CO)_6$. The MALDI-TOF-MS, UV-visible spectra, and HPLC analysis confirmed that the products of sonochemical reaction were $[C_{70}O_n](n=1{\sim}2)$.

• Elastomers and Composites
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• v.39 no.2
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• pp.153-160
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• 2004

Fullerene oxides were synthesized by fullerene ($C_{70}$) and several amine N-oxides such as 3-picoline N-oxide, pyridine N-oxide hydrate, quinoline N-oxide, and isoquinoline N-oxide under ultrasonic condition at $25{\sim}43^{\circ}C$. The reactivity of fullerene ($C_{70}$) with various amine N-oxides undo, ultrasonic irradiation showed the same in all of the proceeding experiments; 3-picoline N-oxide : pyridine N-oxide hydrate : quinoline N-oxide : isoquinoline N-oxide. The MALDI-TOF MS, UV-vis spectrophotometer and HPLC analysis confirmed that the products of fullerene oxidation are [$C_{70}(O)n$] (n=1).

• Elastomers and Composites
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• v.40 no.1
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• pp.45-52
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• 2005

Synthesis or fullerene oxides[$C_{60}(O)_n$] ($n=1{\sim}4$ or n=1) by fullerene[$C_{60}$] and several oxidants such as 3-chloroperoxy benzoic acid, benzoyl peroxide, trichloroisocyanuric acid, and chromium(VI) oxide took place under microwave irradiation. The reactivity in solid state of fullerene[$C_{60}$] with various oxidants under same microwave rendition increased in order or 3- chloroperoxy benzoic acid > benzoyl peroxide > trichloroisocyanuric acid $\simeq$chromium(VI) oxide. The MALDI-TOF-MS, UV-visible spectra and HPLC analysis confirmed that the products of fullerene oxidation were [$C_{60}(O)_n$] ($n=1{\sim}4$ or n=1).

• Elastomers and Composites
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• v.39 no.4
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• pp.309-317
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• 2004

Synthesis of fullerene oxides [$C_{70}O_n$] ($n=1{\sim}3$ or n=1) in solid state by fullerene [$C_{70}$] and several oxidants such as 3-chloroperoxy benzoic acid, chromium(VI) oxide, benzoyl peroxide, and trichloroisocyanuric acid was taken place under microwave irradiation. The reactivity in solid state oi fullerene [$C_{70}$] with various oxidants under same microwave condition increased in the order of 3-chloroperoxy benzoic acid > chromium(VI) oxide > trichloroisocyanuric acid ${\simeq}benzoyl$ peroxide. The MALDI-TOF-MS, UV-visible spectra and HPLC analysis confirmed that the products of fullerene oxidation were [$C_{70}O_n$] ($n=1{\sim}3$ or n=1).

• Analytical Science and Technology
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• v.19 no.6
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• pp.529-534
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• 2006

The protein separation with molecular weight using SDS-PAGE(sodium dodecyl sulfate-polyacrylamide gel electrophoresis) is the one of the most conventional and simple techniques. In, this study, two dimensional SDS-PAGE using same separation principle consecutively was investigated and compared with one dimensional SDS-PAGE. The enhanced separation from duplex SDS-PAGE was observed and separated proteins in the gel were identified by MALDI TOF MS. Identified proteins from different gel spots were found to have different gi numbers. Therefore, duplex SDS-PAGE separation method will be used for economic separation method in the future because only tiny amount of inexpensive reagents are used to perform duplex SDS-PAGE.