Journal of the Korean Society of Food Science and Nutrition
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v.45
no.9
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pp.1324-1332
/
2016
The effects of different hydrocolloids, including hydroxypropyl methylcellulose (HPMC), xanthan gum (XG), guar gum (GG), and glucomannan (GM), on bread quality characteristics were investigated. The composite flour used for bread production consisted of 80% bread flour and 20% rice flour with 1% different hydrocolloids based on baker's%. Loaf volume, specific loaf volume, baking and cooling loss rate, moisture content, crumb texture and color, and sensory evaluation were determined. Breads containing HPMC and GM showed the highest loaf volumes, but the difference was not significant. Bread containing GM showed the lowest baking and cooling loss rate (7.03 and 7.78%, respectively), and the highest moisture content. Breads containing HPMC and GM showed increased springiness and decreased hardness based on texture profile analysis. Cohesiveness, chewiness, and gumminess of breads containing GM and HPMC showed their lowest values, whereas breads containing XG revealed their highest values. Bread with HPMC showed lightest coloured crumbs. In the sensory evaluation, bread containing GM and HPMC presented their highest scores, whereas bread containing XG showed the lowest scores. Overall, HPMC and GM significantly and positively affected quality characteristics of bread.
This study determined the concentrations of micro-minerals in pastures, in feed supplements and in grazing, reproducing ewes, at different times during the year, at three farms in Northern China. Samples were collected 5 to 8 times during the year and analysed for selenium, copper, iron, molybdenum and zinc. On two farms selenium concentrations in both pastures and animal tissues were low for part of the year. The lowest concentrations in pasture (< $30{\mu}g/kg$ DM) and liver (< $100{\mu}g/kg$ wet weight) indicated that productivity of the sheep may be reduced by a deficiency of this element. On one farm copper concentrations in the lever were in the liver were in the deficient range (< $5{\mu}g/kg$ wet weight) for part of the year. It is likely that this is a result of high intakes of iron from pasture (up to 4.5 g Fe/kg DM) and soil, as indicated by high concentrations of iron in faeces (up to 7 g Fe/kg DM). Molybdenum intake is unlikely to have had much influence on copper absorption because pasture concentrations of this element were not unusually high (1 to 5 mg/kg DM). Zinc in pastures on two farms was below 10 mg/kg DM for part of the year. On one of these farms, the concentration of zinc in faeces was below 30 mg/kg DM throughout the year and this is consistent with zinc intakes of 7 to 15 mg/kg. Despite these low intakes, the concentratons of zinc in plasma were consistently above deficient levels. No clinical signs of deficiencies of any of the elements studied were observed.
Journal of the Korean institute of surface engineering
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v.29
no.6
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pp.809-815
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1996
$Y_2O_3$-based metal-insulator-semiconductor (MIS) structure on p-Si(100) has been studied. Films were prepared by UHV reactive ionized cluster beam deposition (r-ICBD) system. The base pressure of the system was about $1 \times 10^{-9}$ -9/ Torr and the process pressure $2 \times 10^{-5}$ Torr in oxygen ambience. Glancing X-ray diffraction(GXRD) and in-situ reflection high energy electron diffracton(RHEED) analyses were performed to investigate the crystallinity of the films. The results show phase change from amorphous state to crystalline one with increasingqr acceleration voltage and substrate temperature. It is also found that the phase transformation from $Y_2O_3$(111)//Si(100) to $Y_2O_3$(110)//Si(100) in growing directions takes place between $500^{\circ}C$ and $700^{\circ}C$. Especially as acceleration voltage is increased, preferentially oriented crystallinity was increased. Finally under the condition of above substrate temperature $700^{\circ}C$ and acceleration voltage 5kV, the $Y_2O_3$films are found to be grown epitaxially in direction of $Y_2O_3$(1l0)//Si(100) by observation of transmission electron microscope(TEM). Capacitance-voltage and current-voltage measurements were conducted to characterize Al/$Y_2O_3$/Si MIS structure with varying acceleration voltage and substrate temperature. Deposited $Y_2O_3$ films of thickness of nearly 300$\AA$ show that the breakdown field increases to 7~8MV /cm at the same conditon of epitaxial growing. These results also coincide with XPS spectra which indicate better stoichiometric characteristic in the condition of better crystalline one. After oxidation the breakdown field increases to 13MV /cm because the MIS structure contains interface silicon oxide of about 30$\AA$. In this case the dielectric constant of only $Y_2O_3$ layer is found to be $\in$15.6. These results have demonstrated the potential of using yttrium oxide for future VLSI/ULSI gate insulator applications.
Journal of the Korean Society of Food Science and Nutrition
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v.35
no.2
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pp.145-149
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2006
This study investigated the quality characteristics of meat from goat fed fermented grape feeds including chemical composition, physical and sensory properties. The hardness of the goat meat was decreased by feeding fermented grape diets, but no significant difference in the pH was observed between control group and fermented grape diet-fed group. Major minerals in goat meat were shown to be Ca, Na, K and Mg and total amino acid content was the highest in a group fed $20\%$ fermented grape-containing diet (T2) among experimental groups. Major fatty acids in goat meat were linoleic acid, oleic acid, palmitic acid, and stearic acid while the content of oleic acid in meat was significantly increased in the group fed fermented grape diet. By increasing the amount of fermented grape in goat diet, L (lightness), a (redness) and b (yellowness) color parameters of goat meat were increased. From the sensory test, the meat from goat fed $30\%$ fermented grape-containing diet (T3) was evaluated the best, with higher overall acceptability of meat at higher content of fermented grape in goat feeds.
Fowl typhoid(FT) caused by Salmonella gallinarum is an infectious, egg-transmitted disease and characterized by swollen bronze liver, greenish-yellow diarrhea and high mortality in growing and adult chickens. Since 1992 the outbreak of FT has been increased. Several problems have been occurred such as absence of appropriate vaccines and lack of useful therapeutic methods. In these studies we investigated the pathogenicity of S gallinarum isolated in chickens. To compare the pathogenicity among the species of chickens, all chickens were challenged intramuscularly or orally with $1{\times}10^7$ CFU of S gallinarum. The brown-colored layers were more susceptible and white leghone chickens were more resistant than other species. In the brown layer chickens orally challenged, lethal doses ($LD_{50}$) of the isolates were inoculated at 1 day, 2 weeks, 4 weeks and 8 weeks old chickens with amount of $10^{4.2}$, $10^{4.7}$, $10^{7.0}$ and $10^{7.6}$ CFU, respectively. The chickens which were intramuscularly challenged with the less amount than $10^2$ CFU showed higher mortality than that of the chickens orally inoculated with same dose. Also, we investigated the recovery rates of bacteria from various organs of survival chickens which were challenged orally with $5{\times}l0^7$ CFU of S gallinarum. The bacteria was more frequently and isolated earlier from the liver and spleen than from any other ogans. In the pathogenicity test, the white-leghorn chickens which were known as resistant-strain against Salmonella were artificially immunosuppressed using bursectomy and/or dexamethasone treatment. Mortality of chickens with both bursectomized and treated with dexamethasone was higher(90%) than that of the control group(10%), the bursectomized chickens(10%) and the dexamethasone only treated group(20%). It was suggested that the protective mechanism in chickens against S gallinarum may be required both the functions of B-cells and T-cells.
Isolation and identification of Mycoplasma were performed to clarify Mycoplasma infection of mice fed by conventional feeding at two ($K_1$, $K_2$) institutes in Korea. The twenty mice to be tested were randomly sampled from each of 10 breeding colonies in respective institute. Identification of the Mycoplasma strains isolated from the nasal cavity, lung and synovia of mice was made according to the morphology of colonies, biological and biochemical properties with special reference to M. pulmonis, M. arthrotodis and M. neurolyticum. In addition, growth inhibition test was performed using hyperimmune rabbit antisera to the strain PG-22 of M. pulmonis, the strain PG-6 of M, arthritidis and the strain PG-28 of M. neurolyticum and also differentiation of isolates from L-form bacteria was dont by Dieses staining and culture method with passage of the isolates on liquid media eliminated antibacterial drug. On the other hand, a total of 13 strains out of the 44 isolated M. pulmonis from mice was investigated for their susceptibility against 16 antibiotics in vitro. The antibiotic sensitivity test was made using $3{\times}10^4$ organisms/0.3ml on each plate(90mm diameter) with antibiotic mono-or tri-disk. The results obtained are summarized as follows: 1. Out of 20 mice from 10 breeding colonies in Kl institute, mycoplasma-like strains from the nasal cavity of 16 mice(80%) and from the lung of 8 mice(40%) were isolated, while out of 20 mice in K2 institute, M-like strains were isolated from the nasal cavity of 14 mice(70%) and from the lung of 6 mice(30%). However, no mycoplasma-like organisms were isolated from the synovia of the 40 mice examined. All the 44 strains isolated were identified as the organisms of M. pulmonis. 2. Out of the 16 antibiotics tested, penicillin, oleandomycin and bacitracin showed no activity against all the 13 M. pulmonis strains. On the contrary, lincomycin, clindamycin, chloramphenicol, tetracycline, minocycline, kanamycin, gentamycin and tobramycin showed high activity with three different antibiotic concentration of tridisk, but amikasin and spiramycin showed intermediate activity. Other antibiotics such as polymyxin B and colistin showed low activity, while erythromycin showed lower activity than others.
This study was carried out to develop concentrate of residual jujube flesh around the seed as a thickening agent of Bulgogi sauce. Quality characteristics and sensory test of Bulgogi sauces added with jujube concentrate (30%, 35%, 40%, 45%, 50%) were evaluated in comparison with control sauce containing xanthan gum as a thickening agent. Moisture content of Bulgogi sauce added with 30% jujube concentrate was the highest (74.59%). As content of jujube concentrate increased, moisture contents in Bulgogi sauces significantly decreased. Sugar content of control sauce ($30.82^{\circ}Bx$), was lowest among the sauces. As content of jujube concentrate increased, Sugar content of sauces significantly increased ($33.00{\sim}34.38^{\circ}Bx$). Salinity (%) was highest in control sauce (1.38%), and there was no difference in salinity among the sauces depending on the amount of jujube concentrate. Viscosity was highest in sauce added with 50% jujube concentrate (43.33 cP) and lowest in sauce with 30% jujube concentrate (13.20 cP). As content of jujube concentrate increased, viscosity tended to increase significantly. Spreadability was highest in sauce added with 30% jujube concentrate (8.88 cm). As the amount of jujube concentrate increased, spreadability of sauce tended to decrease significantly. Color value was different according to the contents of jujube concentrate in sauces. L-, a-, and b-values of control sauce were highest at 40.19, 1.5, and 24.57, respectively. The results of the sensory test for Bulgogi sauce showed that overall preference was significantly highest in sauce added with 35% jujube concentrate. Moreover, sauce added with 35% jujube concentrate was preferred the most in terms of appearance, taste, and fluidity. Meanwhile, the results of the differentiation test showed a significant difference in color intensity, jujube flavor and taste, sweet taste, and salty taste. However, no significant difference was observed in fluidity. The results of the preference test for Bulgogi seasoned with sauces added with jujube concentrate showed that overall preference and flavor, taste, and texture preference were highest in Bulgogi seasoned with sauce added with 35% jujube concentrate. However, no significant difference was observed in preference towards appearance among the samples.
Background : Mesenchymal stem cells (MSCs) are present in most of the tissue matrix, taking part in their regeneration when injury or damage occurs. The aim of this study was to investigate the presence of cells with pluripotential characteristics in human subchondral bone and the capacity of these cells to differentiate to osteoblast. Methods : Human subchondral bone were digested with collagenase. Isolated cells were cultured with a-MEM, 15% FBS, 10-8M dexamethasone and 50 ng/mL ascoric acid. Cells from 0 day(isolated cells), 7 day (first subculture) and 14 days (third subculture) were used to carry out phenotypic characterization experiments flowcytometry analysis with 11 monoclonal antibodies) and osteogenic differentiation experiments. Osteogenic differentiation of cells was assessment by quantification of bone extracellular matrix components by following analysis: alkaline phosphatase(ALP) stains to detect ALP activity, RT-PCR and western blot to detect osteocalcin (OCN), osteopontin (OPN) and type I collagen(Col I), and Alizarin red stains to detect calcium deposition. Results : Flowcytometry analyses showed that in our population more than 98% of cells were positive for MSC markers: SH-2(CD105, 99%), CD29 (95%), CD73 (95%). Cells were negative for hematopoietic markers (CD11b, CD34, and CD45). Furthermore, cells showed positive stain to multipotent markers such as CDl17 (c-kit) (15.1%), and CD166 (74.9%), and cell adhesion molecules such as CD54 (78.1%) and CD106 (63.5%). The osteogenic specific marker analyses showed that the culture of these cells for 7 and 14 days stimulates ALP, OCN, OPN and Col I synthesis by RT-PCR and Western blot analysis. Also, after 14 days in the culture of MSCs induces mineralization by Arizarin red stain. Conclusion : In this work, we demonstrated a new and efficient method for osteoblastic differentiation of human subchondral bone stem cells. As MSCs takes part in reparative processes of adult tissues, these cells could play an important role in osteogenesis.
Kim, Myung-Hee;Cho, Eun-Ji;Park, Hyoung-Sook;Kang, In-Soon
Journal of Home Health Care Nursing
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v.12
no.2
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pp.63-86
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2005
Purpose: This study is a descriptive research which is designed to investigate hospitalized patients' intent to use home care nursing according to the types of medical security. Method: This researcher surveyed 236 patients who were hospitalized at B medical center located in Busan,. Data were collected from Sep. 1 to Nov. 30, 2005 using a questionnaire survey, medical records, face-to-face interviews and observations. Collected data were analyzed in terms of frequency, percentage, mean and standard deviation through $x^2$-test and t-test under SPSS WIN 10.0 Program. Result: Out of the total subjects, 59.3% were medical aid clients and the remaining 40.7%, health insurance ones. The hospitalized period and frequency of the former group were 38.0 days and 4.0 times, respectively, while those of the latter, 37.7 and 3.4. When home care nursing clients were examined using a given classification device, it was found that out of the total 236 subjects, 205(86.9%) were needed to receive home care nursing, 121, medical aid and the other 84, health insurance. 24.0% of medical aid clients heard about home care nursing ever before, lower than 39.3% of health insurance clients. 43.8% of the former clients said cost for home care nursing was high while, 47.6% of the latter group responded expense for the nursing intervention was low. 30.6% of medical aid clients had intent to use home care nursing, lower than 47.6% of health insurance clients. 71.7% of those patients whose monthly income was 99 million won or below had no intent to use home care nursing, higher than 62.5% of those who were 100 million or over in monthly income(p<.05). 76.4% of those clients who had no nursing provider intented to use home care nursing, higher than those who had nursing provider(p<.05). Concerning contents of home care nursing, 85.1% of medical aid clients needed education, training and counseling while, 77.4% of health insurance aids wanted medication and injection. Conclusion: In conclusion, the use of home care nursing by medical aid clients should be promoted through improving conditions for home care nursing in terms of expense, family and residence and making public relations about activities and contents of the home care nursing.
Journal of the Korean Society of Food Science and Nutrition
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v.33
no.6
/
pp.1006-1012
/
2004
We evaluated physicochemical and sensory characteristics of 25 commercial salt-fermented shrimps by kind (Oh Jeot, Yook Jeot and Chu Jeot) by manufacturer (traditional marketer (TS) & company (CS)). Salinity and pH ranged 17.9∼28.7% and 7.82∼8.74, respectively, of which Chu Jeot was somewhat higher in salinity and pH, compared with those of the others. Amino nitrogen (AN), volatile basic nitrogen (VBN) and thiobarbituric acid reactive subjects (TBARS) showed great variation ranged with 21.41∼661.13 mg%, 263.2∼1180.2 mg% and 0.507∼1.322 $\mu\textrm{g}$/g, respectively. Hunter color of L value was 53.99∼67.45, a value, 4.98∼12.06 and b value, 4.45∼10.4. Physicochemical quality showed greater variations in Chu Jeot of TS than that of CS. Products of CS have higher salinity while lower VBN and AN than those of TS. Sensory results showed that mean scores of appearance, over-all taste, over-all flavor and over-all acceptability between TS and CS were not significantly different. The mean score of over-all acceptance was the highest in Yook Jeot. Physicochemical and sensory characteristics of salt-fermented shrimps in a PCA plot comprised of first principal component (68.36%) and second principal component (31.36%).
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