• Journal of the Korean Applied Science and Technology
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• v.4 no.2
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• pp.31-34
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• 1987

Effect of initial PH on the lipid accumulation and fatty acid composition of some species of mold were investigated. The maximum lipid content content produced by Aspergillus niger var. macrosporus was 17.5% at PH 3.5, by Aspergillus fumigatus 23.5% at PH 3.5 by Penicillium spinulosum 12.0% at PH 4.0 and by Penicillium notatum 7.3% at PH 4.0. The major fatty acids were palmitic, stearic, oleic and linoleic acid in all experimental molds. At PH from 4.5 to 6.0, the proportion of linoleic acid was increased and those of palmitic and oleic acid were decreased with rising in PH, therefore, degree of lipid unsaturation was increased in all experimental molds.

• Bulletin of the Korean Chemical Society
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• v.19 no.3
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• pp.340-344
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• 1998

A facile synthesis of 4,5-(1',2'-diphenylethylenedithio)-1,3-dithiole-2-thione (dPhEDT-DTT) is carried out via a Diels-Alder type [2+4] cycloaddition reaction of 1,3-dithiol-2,4,5-trithione oligomer and t-stilbene. Molecular structure of dPhEDT-DTT is determined by x-ray crystallography: space group P1, a=11.694(3) Å, b=12.117(3) Å, c=14.688(3) Å, α=113.12(2)°, β=102.23(2)°, γ=107.02(2)°, V= 1699.1(7) Å3, Z=2. It turns out that dPhEDT-DTT crystallizes as a racemic compound consisting of (R,R) and (S,S) enantiomers. Coupling reaction of dPhEDT-DTO undergone in neat P(OEt)3 yields TTF(SEt)4 instead of ET derivative. When PR3 (R=OEt, OPh, Ph) is used in benzene, toluene or xylene, however, dPhEDT-DTO is decomposed.

• Journal of the Korean Applied Science and Technology
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• v.34 no.2
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• pp.382-393
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• 2017

In this study, it studies about Phytosphingosine (PhS) and Phytosphingosine-1-phosphate(PhS1P), and it tries to confirm the effect through anti-inflammatory, anti-melanin, MMP-1 revelation inhibition, and Western blot analysis experiment after grasping toxicity about 3 cells by using B16F10 melanin cell, RAW264.7 macrophage, and HDF fibroblast in order to find out whether it is possible to use as cosmetic material or not by studying biological activity in terns of skin care. As a result of this experiment, it confirmed that toxicity about B16F10, RAW264.7, HDF cell is low, and PhS1P appeared stronger inhibition activity than PhS in anti-inflammatory NO inhibitory activity experiment. MMP-1 revelation was greater in PhS1P, and it confirmed that the mechanism is due to reduction in ERK activity. On the other hands, melanin generation inhibitory activity is better than arbutin, and it confirmed that the mechanism is due to inhibition of revelation of MTF and Tyrosinase. In a nutshell, PhS and PhS1P that are bioactive substance may confirm the possibility to be used as functional cosmetic for wrinkle and skin improvement of whitening cosmetic.

• Korean Chemical Engineering Research
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• v.46 no.4
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• pp.764-768
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• 2008

Bovine testicular hyaluronidase PH-20 was cloned into pPIC9 vector and expressed in Pichia pastoris. Recombinant PH-20 was 75 kDa MW and 7460 units/L activity. Extracellular hyaluronidase activity was two times higher than that of intracellular activity. Non-buffered medium and $30^{\circ}C$ cultivation was favorable for PH-20 production. 1M sorbitol as an osmotic pressure and 0.3% methanol inducer increased cell growth and enzyme activity. 0.4 M arginine augmentation decreased the proteolytic degradation of recombinant hyaluronidase.

• Journal of Integrative Natural Science
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• v.10 no.3
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• pp.131-136
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• 2017

The chemical shifts in the $^{13}C$ NMR spectra of 2,3,4,5-tetraphenyl-1-silacyclopentdienide dianion $[SiC_4Ph_4]^{2-}{\cdot}2[K^+]$ (3) and 2,3,4,5-tetraphenyl-1-germacyclopentdienide dianion $[GeC_4Ph_4]^{2-}{\cdot}2[K^+]$ (4) were compared to those of $[SiC_4Ph_4]^{2-}{\cdot}2[Li^+]$ (5), $[SiC_4Ph_4]^{2-}{\cdot}2[Na^+]$ (6), and $[GeC_4Ph_4]^{2-}{\cdot}2[Li^+]$ (7). The average polarizations in two phenyl groups of two potassium salts are decreased over 15% to 20% comparing to those of the lithium salts and sodium salt {$[EC_4Ph_4]^{2-}{\cdot}2[M^+]$ (E=Si, Ge, M=Li, Na) due to the effect of the counter potassium cation.

• The Plant Pathology Journal
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• v.17 no.1
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• pp.57-61
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• 2001

Phytoplasmas were identified from two chrysanthemum (Dendranthema grandiflorum) plants showing different symptoms ; one with stusting, rosette, and excessive branching (Ph-ch1), and the other with stunting and chlorosis (Ph-ch2). Electron microscopy of midrib of the plants with the symptoms revealed that numerous phytoplasmas were localized in the phloem cells. The disease was transmitted from infected plants to healthy ones by grafting. Phytoplasma-specific DNA was detected in polymerase chain reaction (PCR) analysis with template DNA extracted from the leaves of Ph-ch1 and Ph-ch2, both of which yielded a same DNA band corresponding to 1.5 kb. Using a specific primer pair (R16F1/R1) synthesized based on aster yellows (AY) phytoplasma, a DNA fragment of 1.1 kb was amplified by PCR. Endonuclease restriction patterns of the 1.1 kb PCR products from Ph-ch1 and Ph-ch2, which were dgeste with each of the restriction endonucleases Sau3A, Hha, Alu and Rsa, were same as those of AY phytoplasma from periwinkle. This suggests that the chrysanthemum plants (Ph-ch1 and Ph-ch2) be infected with a phytoplasma belonging to AY phytoplasma.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.27 no.3
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• pp.115-132
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• 2014

Objective : Portulacae Herba (PH) can clear away heat, detoxicate, cool down blood heat. The present study was designed to investigate the effects of PH on ACD induced by 2,4-dinitrochlorobenzene (DNCB) in mice. Method : In this experiment, the effects of PH on changes in body weights, thicknesses and weights of ear, thicknesses of dorsum skin, degree of symptoms on the dorsum skin, histopathological changes of ear and dorsum skin, spleen weights, TNF-${\alpha}$ and IL-10 in serum were observed. And the effects on the proliferation rates of splenocytes were also investigated in vitro and in vivo. Results : 1. PH spread (PHS) group and PH spread plus administered (PHS+Adm) group didn't show any changes in weight and thickness of ear. 2. But in PHS and PHS+Adm group, thickness of dorsum skin decreased significantly. 3. And PHS and PHS+Adm group showed meaningful effectiveness on ACD symptoms like erythema, desquamation and keratinization. 4. In histopathological observation, hyperplasia and edema of spongy tissues were remarkably diminished in PHS and PHS+Adm group. 5. And PH reduced the proliferation rates of splenocytes in vivo and vitro study. Conclusions : PH effectively decreased symptoms of ACD in this study, therefore PH can be one of medicinal ingredients to treat ACD.

• Toxicological Research
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• v.27 no.1
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• pp.15-18
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• 2011

The toxicities of phenanthrene (PH) and pyrene (PY) are less than benzo(a)pyrene (BaP), but both compounds are found in higher concentrations in the air, feed, and food. Most PAHs are metabolized to hydroxylated compounds by the hepatic cytochrome P450 monooxigenases system. Metabolites are excreted into urine and feces. We determined concentrations of PH, PY and BaP in muscle and hydroxylated metabolites, 3-OH-PH, 1-OH-PY, and 3-OH-BaP, respectively, in urine from dairy cattle (n = 24). We also evaluated the relationship between parent compounds in muscle and their metabolites in urine. Concentrations of PH and PY in muscle ranged from 0.7~4.8 ng/g ($1.8{\pm}1.7$) and 0.4~4.1 ng/g ($1.2{\pm}1.2$), respectively. Concentrations of 3-OH-PH and 1-OH-PY in urine ranged from 0.1~5.9 ng/ml ($2.9{\pm}3.7$) and 0.5~3.6 ng/ml ($1.9{\pm}2.3$), respectively. Correlation coefficient for PY concentration in muscle versus 1-OH-PY in urine was 0.657 and for PH concentration in muscle versus 3-OH-PH in urine was 0.579. Coefficient determination for PY and PH concentrations in muscle was 0.886 and for 1-OH-PY and 3-OH-PH in urine was 0.834. This study suggests that 1-OH-PY and 3-OH-PH could be used as biomarkers for PAHs exposure in dairy cattle.

• Journal of the Korean Chemical Society
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• v.36 no.1
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• pp.81-86
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• 1992

The electrophilic and nucleophilic reactions of M(S-S,ph)(N-N,H) (M = Ni(II), Pd(II), Pt(II); (S-S,ph) = 1,2-diphenylethylenedithiolate; (N-N,H)=1,10-phenanthroline) complexes have been investigated. Reaction with norbornadiene depended upon the back donating ability of the central metal ion and produced 2,5-dithia-3,4-diphenyl-tricyclo[4,4,1,0]-undeca-3,8-diene. In the reaction with methyl iodide, the effect of cleavage of (N-N,H) ligand affected the yield of methylated $M(S-S,ph)_2$ product. The structure of the thermolysis product, ${\alpha},{\alpha}{\prime}$-bismethylthiostibene $(CH_3S-SCH_3,ph)$ of methylated complexes indicates that the main product of the nucleophilic reaction is $M(CH_3S-SCH_3,ph)(S-S,ph)$. We have synthesized a new mixed-ligand complex M(S-S,CN)(N-N,H)((S-S,CN) = 1,2-dicyanoethylenedithiolate) through the nucleophilic reaction of ligand.

• Journal of Acupuncture Research
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• v.27 no.5
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• pp.25-34
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• 2010

Objectives : The purpose of this study is to investigate that effect of Angelica gigas NAKAI pharmacopuncture(AGN-Ph) by concentration at $ST_{36}$(足三里) and $BL_{23}$(腎兪) in Freund's adjuvant rats. Methods : The experimental model of arthritis was induced by injection of Freund's adjuvant into Sprague Dawley(SD) rats. After arthritis was induced, AGN-Ph was injected by concentration at $ST_{36}$ and $BL_{23}$ of rats every other day for 6 times. Thereafter, edema rate, body weight, IFN-${\gamma}$, TNF-${\alpha}$, hematologic assay were measured. Results : The results were as follows, 1. After 3 times AGN-Ph treatment, the mean of edema rate was significantly decreased in AGN-Ph group 3 than control group. And after 6 times AGN-Ph treatment, the mean of edema rate was significantly decreased in AGN-Ph group 1, 2, 3 than control group. 2. The mean of body weight was significantly increased in AGN-Ph group 1, 3 than control group and saline group. 3. The mean of IFN-${\gamma}$ was significantly increased in AGN-Ph group 3 than control group. 4. The mean of TNF-${\alpha}$ was significantly increased in saline group than control group. But the mean of TNF-${\alpha}$ in AGN-Ph group 2, 3 showed no significance compared with control group's. 5. In hematologic assay, levels of WBC, RBC, Hemoglobin, Hematocrit showed no significance in all groups. Conclusions : These results are suggest that the Angelica gigas NAKAI pharmacopuncture(AGN-Ph) at $ST_{36}$ and $BL_{23}$ has a suppressing inflammation effect on Freund's adjuvant arthritis in rats.