Park, Soo-Nam;Choi, Jung-Won;Kim, So-I;Jeon, So-Mi;Kim, Jin-Young;Yang, Hee-Jung;Lee, Keun-Ha
Journal of the Society of Cosmetic Scientists of Korea
/
v.32
no.3
s.58
/
pp.181-191
/
2006
In this study, we investigated the anti-oxidative, anti-wrinkle and whitening effects of 36 plant extracts collected from self-growing plants in Jeju island. Their anti-oxidant activities were measured by free radical scavenging activity using DPPH (1,1-diphenyl-2-picrylhydrazyl radical), reactive oxygen species (ROS) scavenging activities on ROS generated in $Fe^{3+}-EDTA/H_2O_2$ system using the luminol-dependent chemiluminescence assay, and cell protecting activities using the rose-bengal sensitized photohemolysis of human erythrocytes. In addition, the inhibitory activities of tyrosinase for whitening effect and elastase for anti-wrinkle were investigated. The results showed that the Rumex crispus (all grass) extract has the most significant free radical scavenging activity ($FSC_{50};\;10{\mu}g/mL$), Plantago asiatica and Rumex crispus extracts for the prominent ROS scavenging activity ($OSC_{50};\;0.006{\mu}g/mL$, $0.04{\mu}g/mL$ respectively), Rumex crispus ($\tau_{50};\;1,140 min $at $50{\mu}g/mL$), Machilus thunbergii leaf (216 min), and Celastrus orbiculatus (200 min) for cell protecting effects, Morus alba stem for the inhibitory activity on tyrosinse (94.8% at $200{\mu}g/mL$), Rumex crispus (81.8% at $200{\mu}g/mL$), Morus alba (74.6%), and Celastrus orbiculatus leaf/stem/flower (63.1%) for the activity on elastase. These results indicated that the extracts of Rumex crispus, Plantago asiatica, Machilus thunbergii leaf, Morus alba stem, Celastrus orbiculatus leaf/stem/flower could have the functional effects when they are added as ingredients in cosmetics. Thus, it is concluded that further experiments are needed to apply for cosmetic products.
Journal of the Korean Society of Food Science and Nutrition
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v.37
no.10
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pp.1343-1356
/
2008
The evaluation of microbiological quality for school food samples collected from 19 selected middle and high schools located in Seoul was undertaken. Eighty-nine food samples consisting of 38 non-pretreated vegetables, 13 pre-washed and cut vegetables, 9 meats and poultry, 3 fish and shellfish, 7 dried fish, and shellfish and 20 processed foods were collected. Aerobic plate count, total coliforms, and Escherichia coli (E. coli ) were detected using $Petrifilm^{TM}$, and the food-borne pathogens were screened by multiplex PCR with species-specific primer sets. Sequentially, the quantitative and confirmative test of the food-borne pathogens were carried out with the selective media and biochemical kits. The contamination of coliform counts was observed on the pre-washed vegetables ($3.4{\sim}4.3\;log\;CFU/g$) and meats ($2.2{\sim}4.3\;log\;CFU/g$). Also, the cooked foods were heavily contaminated with coliform, ranging from 1.0 to $5.5\;log\;CFU/g$. E. coli counts were found in 16 raw and cooked food samples, exceeding the microbiological standards for the guideline of safety management for school foods. Through PCR detection, B acillus cereus was detected in 32 raw and cooked foods, and quantitatively found in pre-washed carrot, radish, and pan-broiled dried shrimp and filefish ranging from $2.3{\sim}3.6\;log\;CFU/g$, respectively. E. coli O157:H7 was detected on frozen pork sample and was confirmed with API kit. Campylobacter jejuni was found in 3 ready-to-eat type vegetables. Vibrio parahaemolyticus were found in 4 pre-washed vegetables and 2 cooked foods, indicating unsatisfactory quality based upon the microbiological standards of ready-to-eat vegetables and cooked foods by Korea Food and Drug Administration. Salmonella spp. was detected in frozen chicken sample and confirmed by API kit and latex antisera agglutination.
Experimental trials of unilateral lung transplantation in dogs have been attempted and satisfactory results were obtained without any noticeable difficulty in surgical techniques. Fourteen dogs with the body weight of around 25 kg were anesthesized by 20~30 mg/kg of intravenous Entobar,; one was sacrificed to make available blood for use during transplantation for the recipient dog. A mid-sternotomy incision was performed and 20 mg/kg of Prostaglandin E1 was infused through the pulmonary artery and Euro-Collin's(E-C) preservation solution, cooled down to 4$^{\circ}C$, was perfused at the rate of 70cc/kg by a pressure of 30 cmH2O. The heart-lung block was then resected out and promptly immersed in the prepared preservation solution at 4$^{\circ}C$. One lung preserved in the EC solution at 4$^{\circ}C$ was anastomosed to the recipient dog in the order of the pulmonary vein, bronchus then pulmomary artery and the thoracotomy incision was closed after the bleeding control and tube thoracostomy. Then the pneumonectomy in the opposite side was perfomed in the same manner and the tailored lung was transplanted in the order of the pulmonary vein, bronchus, then pulmonary artery. We conclude that in the bilateral sequential lung transplantation, the right lung transplantation should precede to better expose the operative field and to prevent reperfusion injury; also, the cardiopulmonary bypass should be consider for certain appropriate cases.
The protective effects of sea tangle (Laminaria japonica) extract and fucoidan components on the attack of oxygen radicals in kidney were studied, Sprague-Dawley (SD) male rats (210 $\pm$ 5 g) were with fed experimental diets of Dasi-Ex group (sea tangle extract powder of $4.0\%$ added to control diet), Euco-I, II and III groups (fucoidan powder of 1, 2 and $3\%$, respectively, added to Dasi-Ex group) for 45 days, Hydroxyl radical formations were significantly decreased ($10\~15\%$ and $15\~30\%$) in mitochondria and microsomes of Dasi-Ex and Fuco-I, II, III groups compared with control group. Hydrogen peroxide formations were also significantly decreased ($10\~15\%$) in microsomes of Dasi-Ex and Fuco-I, II, III groups compared with control group. Significant differences in mitochondrial basal oxygen radical (BOR) and microsomal induced oxygen radical (IOR) formations of Dasi-Ex and Fuco-I groups could not be obtained, but mitochondrial BOR and microsomal IOR formations were significantly decreased ($12\~15\%$ and $13\~14\%$) in Fuco-II and III groups compared with control group. BOR formations were significantly decreased ($12\~25\%$) in microsomes of Dasi-Ex and Fuco-I, II, III groups, and IOR formations were also significantly decreased ($10\~15\%$) in mitochondria of Fuco-I, II, III groups compared with control group, Significant differences in mitochondrial Mn-SOD activities of Dasi-Ex group could not be obtained, but mitochondrial Mn-SOD activities were dose-dependently increased by $8\%,\;16\%$ and $36\%$ in Fuco-I, II and III groups compared with control group, Mn-SOD activities an microsome were significantly increased about $20\%$ in Dasi-Ex group, while they were remarkably increased about $40\%$ in Fuco-I, II and III groups compared with control group. lipid peroxide contents were significantly decreased about $15\%$ and $15\~25\%$ in mitochondria and microsomes of Fuco-II and III groups. Membrane fluidities resulted in marked increases ($20\~35\%$ and $17\~24\%$) in mitochondria and microsomes of Dasi-Ex and Fuco-I, II and III groups. These results suggest that administrations of fucoidan added to sea tangle may play a pivotal role in attenuating attack of oxygen radicals in kidney.
Kim, Ji-Hyun;Son, In-Suk;Kim, Jong-Sang;Kim, Ki-Hoon;Kwon, Chong-Suk
Journal of the Korean Society of Food Science and Nutrition
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v.37
no.2
/
pp.154-161
/
2008
Phellinus linteus (PL) has been known to exhibit potent biological activity. The present study was designed to investigate lipase-inhibitory and anti-oxidative activity of the methanol extract and the powder of PL fruiting body. The methanol extract of PL appeared to have the inhibitory activity against pancreatic lipase with an $IC_{50}$ value of $36.3\;{\mu}g/mL$, and the scavenging activity of DPPH radical with an $IC_{50}$ value of $20.1\;{\mu}g/mL$, which was similar to that of vitamin C ($IC_{50}\;18.3\;{\mu}g/mL$). To investigate the lipase-inhibitory and anti-oxidative effect of PL on animal, Sprague-Dawley rats were fed with high-fat diet supplemented with either 2% or 5% PL powder for 8 weeks. Total food intake was significantly increased, but body weight was not changed by PL powder supplementation. However, fecal fat excretion of the experimental groups fed with the PL powder were higher than that of the control group. PL powder showed a decrease in the plasma total cholesterol, LDL-cholesterol, and the hepatic total cholesterol levels. The anti-oxidative enzyme activities were also affected by PL supplementation. Glutathione peroxidase (GSH-Px) in the plasma and liver were significantly increased by 98% and 46% in the 2% PL group, and 99% and 32% in the 5% PL group, respectively. Total superoxide dismutase (T-SOD) activity was not affected by PL supplementation. DNA damage was measured by the comet assay in the lymphocytes collected after 2 weeks, 4 weeks, and 8 weeks of feeding PL supplemented diet. Lymphocyte DNA damage was decreased in the PL supplemented group. Furthermore, PL feeding enhanced the resistance to lymphocyte DNA damage caused by an oxidant challenge with $H_2O_2$.
Purpose : The purpose of this study was to investigate whether hypercalciuria patients with hematuria show different renal indices compared to non-hypercalciuria patients with hematuria. Methods : We retrospectively reviewed the medical records of patients with gross or microscopic hematuria whose blood chemistry and 24 hour urine chemistry were examined. After excluding the patients with more than $4 mg/m^2/day$ proteinuria or the patients with urinary calcium excretion between 3 and 4 mg/kg/day, we divided the patients into two groups: a hypercalciuria group whose calcium excretion was more than 4 mg/kg/day(n=30) and a non hypercalciuria group whose calcium excretion was less than 3 mg/kg/day(n=41). The urinary excretion, clearance, and fractional excretion(FE) of Na, K, Cl, Ca, P, urea, and creatinine were calculated and compared between the two groups. Results : The hypercalciuria group had more calcium excretion($6.1{\pm}2.9$ vs $1.5{\pm}0.9 mg/kg/day$), more urea excretion($341{\pm}102$ vs $233{\pm}123 mg/kg/day$), greater glomerular filtration rate(GFR) ($93.7{\pm}31.1$ vs $79.5{\pm}32.0 mL/min$) but lower FENa($1.0{\pm}0.4%$ vs $1.3{\pm}0.6%$) than the nonhyper-calciuria group, although the urinary sodium excretion was similar between the two groups. Conclusion : The greater urea excretion and GFR in hypercalciuric patients suggest that they might be on a higher protein diet than the non-hypercalciuria group. The increased glomerular filtration of sodium and calcium induced by the higher GFR in hypercalciuria would have increased their delivery to the distal tubule, where sodium is effectively reabsorbed but calcium is not, which is suggested by the lower FENa but higher FECa in hyercalciuria. It is recommended that the diet of hematuria patients be reviewed in detail at initial presentation and during treatment.
Park, Nae Joung;Park, Young Sun;Lee, Kyu Ha;Kim, Yung Sup
Korean Journal of Soil Science and Fertilizer
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v.5
no.1
/
pp.25-32
/
1972
The effects of limestone and wollastonite on an acid sulfate soil were studied. In addition, the effect of wollastonite was analyzed in terms of those due to calcium and to silica in the paddy field and in the laboratory with equivalent amounts of lime and wollastonite on a calcium basis. 1. Lime and wollastonite as liming materials were equally effective in neutralizing the soil acidity. 2. Lime, however was more reactive, raising the pH up to neutralization point in three days under waterlogged conditions at $25^{\circ}C$, in the lab study, and introduced alkali damage to transplanted rice seedlings showing marked restrictions of tillering in the field even though lime was applied two weeks before transplanting. On the other hand, wollastonite reacted very slowly, taking one week to two weeks to reach neutralization even when thoroughly mixed, and did not restrict the tillering. 3. Both lime and wollastonite effectively reduced the toxic aluminium in soil as well as in the soil solution but not always in the case of ferrous iron. However the reduction effect of the toxic substances in the experimental field was not so great as expected, because typical toxic symptoms were mild only. 4. Lime considerably increased the availability of silica in soil resulting in an increase of silica content in straw. Wollastonite released extra available silica itself resulting in a greater uptake of silica. 5. Increase of silica uptake by these materials was effective in reducing rate of infection of neck blast and resulted in higher rate of ripening, and in turn increased the paddy yield. 6. Application of either one significantly diminished the effect of the other. 7. Wollastonite markedly increased tillering in the early growing stage, but decreased the rate of effective tillers finally, resulting in about the same number of ears per hill at harvesting. 8. These liming materials appear to increase the number of grains per panicle slightly.
Sin, Seung Mi;Jeong, Won Min;Kil, Young Sook;Lee, Dong Yeol;Kim, Sang Gon;Goo, Young-Min
Journal of Life Science
/
v.30
no.1
/
pp.40-44
/
2020
This study investigated the anti-bacterial and anti-inflammatory activities of Artemisia iwayomogi Kitamura for medical and food additive applications. A 70% methanol extract of A. iwayomogi Kitam. was fractionated with a series of solvents in order of increasing polarity; these fractionated extracts showed high 2,2-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) scavenging activity in the ethyl acetate fractions and high 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity in both the ethyl acetate and chloroform fractions. Levels of total phenolics and flavonoids were highest in the ethyl acetate fraction extracts. Eight bacteria were then treated with the A. iwayomogi Kitam. extract fractions and most showed similar or lower levels of anti-bacterial activity when compared to the control group, except for Staphylococcus aureus. In addition, the anti-oxidant activities of the ethyl acetate fractions of the A. iwayomogi Kitam. extract were higher than those of the other fractions. To confirm the anti-inflammatory activity of the extract fractions, we applied them to RAW 264.7 cells using LPS, and the results indicate that an ethyl acetate fraction at 250 ㎍/ml concentration inhibits nitric oxide production. This study demonstrates that an ethyl acetate fraction of A. iwayomogi Kitam. extract inhibits bacterial and inflammatory activities and could be useful as a potential source of bioactive compounds.
Journal of the Korean Society of Food Science and Nutrition
/
v.44
no.9
/
pp.1399-1406
/
2015
The purpose of this study was to investigate the antioxidant activity of Korean traditional soy sauce and its relationship with physicochemical properties. Seventeen samples of soy sauce prepared by using a Korean traditional method were obtained from six provinces of Korea. The most powerful antioxidant activity of soy sauce was ranging from 8.96 to 63.39% for 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, from 0.12 to 2.41 AE mg/mL for ferric reducing antioxidant power (FRAP) value, and from 8.42 to 115.69 TE mg/mL for oxygen radical absorbance capacity (ORAC). Protease activity and total polyphenol contents were highly correlated with antioxidant activities such as DPPH radical scavenging activity and FRAP value (R=0.97). The contents of amino nitrogen were also correlated with DPPH radical scavenging activity (R=0.92), FRAP (R=0.93), and ORAC values (R=0.80). Based on these results, antioxidant activities were highly influenced by protease activity, contents of total polyphenols, and amino nitrogen.
This study has investigated naturally occurring radioactive materials (N.O.R.M; $^{238}U$, $^{222}Rn$) for 353 drinking groundwater wells in metamorphic rock areas in Korea. Uranium concentrations ranged from N.D (not detected) to 563.56 ${\mu}g/L$ (median value, 0.68 ${\mu}g/L$) and radon concentrations ranged from 108 to 11,612 pCi/L (median value, 1,400 pCi/L). Uranium and radon concentrations in the groundwater generally are similar to USA with similar geological setting. Uranium concentrations in 9 wells (2.6%) exceeded 30 ${\mu}g/L$, which is the maximum contaminant level (MCL) by the US environmental protection agency (EPA), radon concentrations in 46 wells (13%) exceeded 4,000 pCi/L, which is the Alternative MCL (AMCL) by the US.EPA. The log-log correlation coefficient between uranium and radon was 0.32. The correlation coefficient between uranium and pH was 0.12 and the correlation coefficient between radon and temperature was -0.01. The correlation coefficient between uranium and $HCO_3$ was 0.09 and the correlation coefficient between uranium and Ca was 0.11. The median value of uranium was high Chung-Buk (1.78 ${\mu}g/L$), Gyeong-Buk (1.37 ${\mu}g/L$), In-Cheon (1.06 ${\mu}g/L$) for each province. On the other hand, the median value of radon was high In-Cheon (2,962 pCi/L), Chung-Buk (2,339 pCi/L), Jeon-Buk (2,165 pCi/L) for each province. Jeon-Buk for log-log correlation coefficient is the highest (0.63) among provinces.
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