• Journal of Periodontal and Implant Science
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• v.29 no.2
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• pp.401-415
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• 1999

Root surfaces affected by periodontal disease undergo various forms of changes. Cementum exposure from gingival recession may result in absorption of calcium, phosphorus, and fluoride and subsequent hypermineralization and increased radiodensity. Although some reports have suggested that inorganic content with root cementum might show various changes depending upon age or extent of periodontal disease, but no consensus can be reached regarding the the distribution of various elements. The present study examines the difference in mineral content between healthy and periodontal diseased roots by analyzing three areas per tooth along the root surface in cervico-apical direction using electron probe and scanning electron microscope. Healthy tooth that was extracted for orthodontic purpose was used as control. Experimental teeth include those with periodontal pocket depth exceeding 6mm and those with gingival recession and periodontal pocket depth of 2-4mm. Levels of Ca, P, Mg and Na were measured using wavelength dispersive x-ray spectrometer at three areas per tooth. The examined areas were located apical to cemento-enamel junction in control and periodontal ligament-depleted areas in experimental teeth. The corresponding areas were also examined with scanning electron microscope(x70) The results are as follows. 1. Minerals were detected in order of Ca, P, Mg and Na. In all root surfaces, levels of Ca and P were higher in dentin than in cementum. 2. Level of Mg was twice as high in dentin than in cementum. There was no significant difference in the level of Mg and Na between normal and periodontal diseased roots or between the various locations in the same root. 3. Level of Ca and P in the surface cementum showed no difference between normal and periodontal diseased root, although the areas in dentin with high level of either ion also showed high level of corresponding ion in cementum. 4. Difference in the Ca and P content between various locations within the same root was noted, although no coherent pattern existed. These results suggest that although the mineral content of the root cementum in periodontitis-affected tooth is affected by exogenous ions from saliva and food, but there was no difference in the mineral contents between normal and periodontally diseased root.

• Journal of the korean academy of Pediatric Dentistry
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• v.36 no.2
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• pp.227-236
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• 2009

The purpose of this study is to examine the acidity of beverages that are sold for children in the market and to estimate by experiment the degree of the enamel erosion of deciduous teeth that is attributed to the beverages. The pH value of children beverages among top sale list in Seoul and Gyeonggi province were measured. And 7 beverages with the pH value of 3.5 or lower were selected. The enamel erosion of deciduous teeth by the children beverages for 1, 5, 10, and 30 minutes respectively was examined. The results were as follows: 1. The acidity of most of the children beverages examined in this study was the pH level of 5.5 or lower that can cause the tooth erosion. 2. The microhardness value of the enamel of deciduous teeth was lower as exposing it to children beverages. The reduction of surface microhardness value was significant from 1 minute after the exposure, and the reduction was continuously observed until 30 minutes has passed. 3. The higher the acidity of beverages, the larger the reduction in microhardness value caused after the exposure of 30 minutes to the beverages. There was no significant relation between the acidity of beverages and the reduction rate of surface microhardness value. The other factors such as calcium, phosphorus, and fluorine or buffering of the beverages may affect the enamel erosion.

• The Journal of the Korean bone and joint tumor society
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• v.6 no.2
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• pp.82-87
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• 2000

Tumoral calcinosis is a disease of unclear etiology which presents with periarticular and intramuscular calcification without the disorder of calcium and phosphorus metabolism. The incidence is very rare but the rate is higher among the blacks than whites. There has been no report on the recurrent occurrence on the asian race. We report a case that recurred several times with tumoral calcinosis of both knee and thigh. A 21-year-old woman visited to our department with masses in both right thigh and knee. She had a history of local excisions and biopsies(4 times at other hospital) and showed prompt recurrences. The complete marginal excision was performed for the treatment. The histological examination showed the findings that are compatible with tumoral calcinosis. There has been a free of recurrence over the past two years.

• Journal of the Korean Society of Food Science and Nutrition
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• v.36 no.11
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• pp.1417-1424
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• 2007

The food components of fish (skipjack tuna, yellowfin tuna, bluefin tuna, conger eel, salmon, Spanish mackerel, armored weasel-fish) frames and their hot-water extracts were investigated to explore their possibilities as resources for fish Gomatang. According to the results of volatile basic nitrogen and heavy metal, bluefin tuna and salmon frames were below the safety limits suggested by Codex Code. Thus, bluefin tuna and salmon frames appeared to be safe as basic ingredients for fish Gomtang. The major components of all hot-water extracts from fish frames were nitrogenous component. According to the results of extractive nitrogen and sensory evaluations of hot-water extracts from fish frames, the salmon frame was a good raw material as a basic ingredient of fish Gomtang. The calcium and phosphorus contents of hot-water extracts from salmon frame were 18.0 mg/100mL and 33.1 mg/100mL, respectively.

• Journal of the Korean Society of Food Science and Nutrition
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• v.40 no.11
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• pp.1631-1634
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• 2011

This study was conducted to estimate the general components, minerals, and dietary fiber contents of Synurus deltoides. S. deltoides contained 81.1% moisture content, and the proportions of crude fat, crude protein, crude ash, and crude fiber were 0.3%, 4.2%, 2.6%, and 3.5%, respectively. Potassium (3,249.1 mg) was the most abundant component among the minerals in S. deltoides. In addition, S. deltoides contained many other minerals, e.g. calcium (854.8 mg), phosphorus (60.3 mg), magnesium (344.7 mg), sodium (57.3 mg), zinc (1.7 mg), iron (30.9 mg), copper (0.8 mg), and manganese (5.8 mg). Almost all of the mineral contents of S. deltoides were higher than those of Aster scaber and Ligularia fischeri, except for zinc, copper, and manganese. Total dietary fiber (TDF), insoluble dietary fiber (IDF), and soluble dietary fiber (SDF) contents of S. deltoides were 42.6 g, 37.9 g, and 4.7 g, respectively, and these were also higher than those of A. scaber and L. fischeri used in this study. These results suggest that S. deltoides may be a valuable nutrient source.

• Journal of the Korean Society of Food Science and Nutrition
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• v.37 no.7
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• pp.886-890
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• 2008

Levels of minerals, vitamin, amino acids, fatty acids and chemical compositions were determined in the fleshy parts that are used for food. The moisture, crude protein, crude lipid, crude ash and carbohydrate contents of masou salmon were $73.6{\pm}0.4$, $17.7{\pm}0.3$, $3.3{\pm}0.2$, $1.3{\pm}0.1$ and $4.1{\pm}0.2%$, respectively. Potassium was the highest followed by phosphorus, calcium and sodium. The vitamin C and E levels in masou salmon were 600 and $200\;{\mu}g/100\;g$, respectively. Sixteen amino acids were detected and essential amino acids among them are threonine, valine, methionine, isoleucine, leucine, phenylalanine, lysine, arginine, and histidine. Oleic acid was the most abundant fatty acid in masou salmon and polyunsaturated fatty acids were EPA, DHA, linoleic acid, $\alpha$-linolenic acid, $\gamma$-linolenic acid and arachidonic acid. These results may offer a scientific basis for the commercial use of masou salmon.

• Journal of the Korean Society of Food Science and Nutrition
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• v.37 no.7
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• pp.891-899
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• 2008

For the effective use of under-utilized resources, silver-stripe round herring (SSRH), the boiled-dried SSRH was investigated on the food component and sensual characterization. Moisture content and salinity of the boiled-dried SSRH were 27.2% and 7.0%, respectively, which were in the range described in Korean Industrial Standards. In the lipid content of the boiled-dried SSRH, viscera was higher in viscera than muscle. The major fatty acids of the boiled-dried SSRH were 16:0 (23.9%), 18:1n-9 (9.5%), and 22:6n-3 (DHA, 28.5%). The degree of lipid oxidation of the boiled-dried SSRH was similar to that of the boiled-dried anchovy caught in the southern sea. When compared to the boiled-dried anchovies, the boiled-dried SSRH was lower in total content of amino acid, while was higher in calcium and phosphorus contents. The boiled-dried SSRH was higher in taste strength, while was similar in the taste pattern to the boiled-dried anchovies. According to the results of chemical components and sensory evaluation, the boiled-dried SSRH could be substituted for boiled-dried anchovy classified into special grade.

• Korean Journal of Poultry Science
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• v.30 no.3
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• pp.169-175
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• 2003

This experiment was conducted to study the optimum energy feeding regimens fur broiler breeders peaked in winter season with 400 caged hens of Ross strain. Four energy supply regimens which were different in daily energy allotment during laying period were employed for 40 weeks from 24 to 64 weeks of age. All experimental diets were formulated to contain 2,750 kcal ME/kg with adjustments made in total feed allotment to provide the desired energy levels. Total consumption of the feed would provide 20 g of protein, 4 g of calcium and 0.35 g of available phosphorus. There were no difference in hen-day egg production and average egg weight among the regimens of energy supply. Feed, ME and feed cost required per egg or per kg egg were significantly increased as the level of energy allotment increased(p<0.05). It was concluded that the energy supply regimen, which supplied 280 kcal ME per day at the age of 24 weeks and then increased the energy supply up to 400 kcal ME per day at the peak period of 30∼34 weeks of age, was superior in feed, ME and feed cost required per egg or per kg egg without any adverse effect on eg production and egg weight.

• Korean Journal of Soil Science and Fertilizer
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• v.10 no.4
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• pp.205-210
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• 1978

A study was carried out to examine the effects of chromium added in soil on yield of Chinese cabbage and the responses of lime and lime with compost applied on the plant growth as a control measures. The results are summarized as follows: 1. The yield of fresh leaf weight of Chinese cabbage was apparently decreased in proportion to the increased amount of chromium added. 2. Lime application on the chromium added soil were significantly increased the yield and the responses were more effective with the application of lime and compost. 3. Percentage of chromium in plant and N/2-HCI soluble chromium was decreased with the application of Lime and lime with compost. 4. Significant correlations were observed on total chromium contents in soil with fresh leaf weight of Chinese cabbage. 5. Nitrogen, phosphorus, calcium and magnesium contents in plant were decreased by added rate of chromium.

• Journal of Life Science
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• v.17 no.9 s.89
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• pp.1290-1293
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• 2007

The nutritional composition of fruiting body of Sparassis crispa has been analyzed for medicinal and edible uses. Minerals in S. crispa were found to be as follows; potassium (1,299.44 mg), phosphorus (104.73 mg), sodium (98.21 mg), magnesium (54.86 mg), calcium (8.39 mg), iron (7.61 mg), zinc (6.37 mg), copper (1.31 mg) and manganese (0.63 mg) based on 100 g of mushroom dry weight. In 20 kinds of total amino acids found in S. crispa, sum of glutamic acid and glutamine content was the highest (1,960 mg/l00 g) and sum of aspartic acid and asparagine, tryptophan, leucine and alanine were followed. Concerning free amino acids, glutamic acid, tryptophan, glutamine and aspartic acid were dominant. Among 8 vitamins detected, the vitamin E content was the highest (408.5 mg) based on 100 g of mushroom dry weight, then vitamin C, niacin and pantothenic acid were followed.