• Proceedings of the Korean Society of Precision Engineering Conference
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• 2007.06a
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• pp.121-122
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• 2007

• Asian-Australasian Journal of Animal Sciences
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• v.25 no.7
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• pp.913-920
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• 2012

In this study, we investigated the relationship between unsaturated fatty acids influencing beef flavor and four types of SNPs (c.280A>G, c.388G>A, c.408G>C and c.456A>G) located at exon 2, 3 and 4 of the FABP4 gene, which is a fatty acid binding protein 4 in Korean cattle (n = 513). When analyzing the relationship between single genotype, fatty acids and carcass trait, individuals of GG, GG, CC and GG genotypes that are homozygotes, had a higher content of unsaturated fatty acids and marbling scores than other genotypes (p<0.05). Then, haplotype block showed strong significant relationships not only with unsaturated fatty acids (54.73%), but also with marbling scores (5.82) in $ht1{\times}ht1$ group (p<0.05). This $ht1{\times}ht1$ group showed significant differences with unsaturated fatty acids and marbling scores that affected beef flavor in Korean cattle. Therefore, it can be inferred that the $ht1{\times}ht1$ types might be valuable new markers for use in the improvement of Korean cattle.

• Korean Journal of Pharmacognosy
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• v.4 no.4
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• pp.193-203
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• 1973

The saponins of two- and four-year-old American ginseng plants (Panax quinquefolium L.) (Araliaceae) collected in July and September were studied. American ginseng saponins (panaquilins) differ from Korean ginseng $(Panax ginseng\;C.A.\;M_{EYER})$ saponins (ginsenosides). The American ginseng saponins separated and named were panaquilins A, B, C, D, E-1, E-2, E-3, G-1, G-2, (c) and (d). One-dimensional thin-layer chromatography did not completely separate panaquilin mixture and was subject to misinterpretation. The panaquilins were more accurately separated and identified by the two-dimensional thin-layer method established. Some differences in American ginseng saponins were dependent upon the plant age, time of collection, and part extracted. The American ginseng sapogenin components are panaxadiol (panaquilins B and C), oleanolic acid (panaquilin D) and panaxatriol (panaquilin G-1). The panaquilins E-1, E-2 and E-3 mixture contained both panaxadiol and panaxatriol. The genins of panaquilins A, (c), (d) and G-2 were not identified. In addition, ${\beta}-sitosterol$ and stigmasterol were identified from the root ether extracts.

• Food Science and Biotechnology
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• v.17 no.4
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• pp.824-828
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• 2008

Effect of various temperatures on enterotoxin production of Bacillus cereus 4 different cereal grains (brown rice, glutinous rice, barley, and Job's tear) was studied. When B. cereus was inoculated to 4 grains, no toxin was detected within 24 hr at 20 and $25^{\circ}C$ although the population reached approximately 8-10 log CFU/g. However, enterotoxin was detected in all samples above $30^{\circ}C$. When the temperature was increased to $35^{\circ}C$, toxin production was observed in the range of 6.11 and 6.26 log CFU/g on brown rice and glutinous rice, respectively. At $40^{\circ}C$, toxin production was detected after 6 hr with the lowest bacterial population of 5.32 and 5.04 log CFU/g, whereas enterotoxin was produced in the range of 6.86 and 7.77 log CFU/g on barley and Job's tear at $40^{\circ}C$. Different types of food affected enterotoxin production of B. cereus. These results suggest that enterotoxin production was more significantly regulated in incubation temperatures than the number of B. cereus.

• Applied Biological Chemistry
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• v.48 no.1
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• pp.70-76
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• 2005

Approximate composition and physicochemical properties of 7 cultivars of persimmon peel, by product of dried-persimmon, were examined. The content of crude fiber were different according to cultivars. Glucose, fructose and sucrose were isolated by HPLC; also, myristic, palmitic, palmitoleic, oleic and linolenic acid were the major fatty acids in persimmon peel. Total and free amino acid were 241.32-371.45 mg/100 g and 3.69-28.31 mg/100 g, respectively; also, aspartic and glutamic acid were the predominant amino acids, reaching a level between 19.6 and 24.8% of total amino acids. Insoluble dietary fiber content(34.89-50.76 g/100 g) was remarkably higher than soluble dietary fiber (2.44-7.09 g/100 g). Total carotenoids were in the range of 179.4-340.6 mg/100 g, and total phenolic compounds ranged from 44.07-196.98 mg/100 g, showing differences between cultivars.

• Journal of Physiology & Pathology in Korean Medicine
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• v.17 no.6
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• pp.1404-1408
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• 2003

The combined effects of water-soluble fraction of Moschus (ME) and anti-tumor drug mitomycin C on the proliferation of human tumor cell-lines were estimated by MTT colorimetric assay. ME inhibited the proliferation of Hep G2, A540, HeLa, KHOS-NP and Balb/c 3T3 cells. Also, ME increased the cytotoxicity of mitomycin C on Hep G2, A549 and HeLa cells. In addition, ME enhanced the cell viability of murine splenocytes and human lymphocytes at the concentration of 100㎍/㎖. These results indicate that ME inhibits the proliferation of human tumor cells and increases the cytotoxicity of mitomycin C without cytoxicity on immune cells.

• Communications of the Korean Mathematical Society
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• v.12 no.2
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• pp.275-285
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• 1997

Let E be a uniformly convex Banach space with a uniformly G$\hat{a}teaux differentiable norm, C a nonempty closed convex subset of $E, T : C \to E$ a nonexpansive mapping, and Q a sunny nonexpansive retraction of E onto C. For $u \in C$ and $t \in (0,1)$, let $x_t$ be a unique fixed point of a contraction $R_t : C \to C$, defined by $R_tx = Q(tTx + (1-t)u), x \in C$. It is proved that if ${x_t}$ is bounded, then the strong $lim_{t\to1}x_t$ exists and belongs to the fixed point set of T. Furthermore, the strong convergence of ${x_t}$ in a reflexive and strictly convex Banach space with a uniformly G$\hat{a}$teaux differentiable norm is also given in case that the fixed point set of T is nonempty.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.7
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• pp.599-606
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• 2019

Most facilities that manufacture products made from the hazardous materials operate at high temperatures and pressures. Therefore, there is a risk of fire explosion. In particular, an explosion accident is a major risk factor for facilities with hazardous materials, such as oil, chemical, and gas. Propylene is often used in sites producing basic raw materials and synthetic materials by addition polymerization at petrochemical plants. To prevent an explosion in the business using propylene, the explosion range with the oxygen concentration was calculated according to the changes in temperature and pressure using an inert gas, carbon dioxide. In these measurements, the temperature was $25^{\circ}C$, $100^{\circ}C$, and $200^{\circ}C$ and the amount of carbon dioxide in the container was $1.0kgf/cm^2.G$, $1.5kgf/cm^2.G$, $2.0kgf/cm^2.G$, and $2.5kgf/cm^2.G$. The explosion limit was related to temperature, pressure, and oxygen concentration. The minimum oxygen concentration for an explosion decreased with increasing temperature and pressure. The range of explosion narrowed with decreasing oxygen concentration. In addition, no explosion occurred at concentrations below the minimum oxygen concentration, even with steam and an ignition source of propylene.

• Journal of Sericultural and Entomological Science
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• v.51 no.1
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• pp.36-40
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• 2013

To promote the consumption of mulberry fruit, we manufactured mulberry fruit wine with 'simheung' by different processing methods and analyzed cyanidin-3-glucoside(C3G) stability and antioxidant capacity. In the processing of mulberry fruit alcoholic drink, 3 minutes blanching using microwave inhibited the C3G destruction by maintaining the antioxidant capacity and inactivation of enzymes related to pigment's stability. And freeze-dried mulberry fruit was the highest C3G pigment content and antioxidant capacity. Nevertheless, this is not recommended because the economic burden of the cost of freeze-drying. In conclusion, when processing mulberry fruit wine, the addition of citric acid and the enzyme's inactivation treatment were considered more effective than storage containers (transparent glass, brown glass bottles, aluminum foil, green glass, translucent glass bottles).

• Korean Journal of Biological Psychiatry
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• v.11 no.2
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• pp.110-116
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• 2004

Objectives:Recently, polymorphisms of several serotonin genes have been suggested to be associated with suicide, but the results are still unclear. We examined whether the T102C polymorphisms of the serotonin 2A receptor gene and the G861C polymorphisms of the serotonin 1B receptor gene were associated with suicidal behavior using drug intoxication. Methods:The subjects were 52 patients who visited emergency room with suicidal behaviors. Fifty controls were selected from healthy volunteers matched for sex and age to the suicide subjects. The polymorphisms were analyzed with TaqMan$^{(R)}$ assay using primers based on previous studies. Results:The T102C polymorphism of the serotonin 2A receptor gene showed no significant difference between the suicidal attempters and controls in both genotype and allele frequency analyses(p=0.179 and p=0.422, respectively). There was no statistically significant difference between the suicidal attempters and the controls in the G861C polymorphism of the serotonin 1B receptor gene and any significant effect of the genotype distributions or the allele frequencies was not observed(p=0.092 and p=0.987, respectively). Conclusion:These findings suggest that the T102C polymorphism in serotonin 2A receptor gene and the G861C polymorphism in serotonin 1B receptor gene are not related to the susceptibility to suicide attempts using drugs. To clarify the genetic influences of the serotonergic system on suicidal behavior, the polymorphisms of other candidate genes in the serotonergic system should be studied with larger numbers of subjects.