In this study, white ginseng water extract (WGWE) solutions were analyzed to set up the functional saponin content and quality optimization condition. The highest saponin content among the total white ginseng extracts was 8.32 mg/10 ml which was extracted at $75^{\circ}C$ for 18 hours. In addition, the saponin content decreased according to the increased extraction temperature and time. The highest content of $Rb_2$ and Re was 0.89 mg/10 ml, 0.82 mg/10 ml at $75^{\circ}C$ for 18 hours which decreased according to the increased extracted temperature and time. The highest content of $Rg_3$ was 1.67 mg/10 ml at $95^{\circ}C$ for 24 hours which decreased according to the increased time. The turbidity, sweetness and reducing sugar content were increased according to the increased extracted time at $75^{\circ}C$, $85^{\circ}C$, $95^{\circ}C$, but pH were decreased according to the increased extracted time. Therefore, the most appropriate white ginseng extracting method have to extracted the proper temperature for saponin content at first time in combination with raise the temperature for taste at second time.
Kim, Sang-Yeol;Oh, Seong-Hwan;Hwang, Woon-Ha;Choi, Kyung-Jin;Park, Sung-Tae;Kim, Jeong-Il;Yeo, Un-Sang;Kang, Hang-Won
KOREAN JOURNAL OF CROP SCIENCE
/
v.54
no.4
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pp.351-356
/
2009
Growth, milled rice yield and edible quality of rice in naturally reseeded Chinese milk vetch(CMV)-rice cropping system was compared with those in rice mono cropping on silty loam soil in Milyang from 2006-2008. Practicing natural reseeding technology recorded high CMV reseeding stand ranging from 565-805 plants $m^{-2}$ and resulting in the production of 13.0-17.0 kg N/10a from the CMV plant biomass which is greater than the recommendation rate of 9 kgN/10a. The plant height of rice plant grown in natural reseeding field is shorter at tillering stage but it was similar to the rice mono cropping at later stage. Dry matter production had similar trend to plant height. On the other hand, the leaf color in naturally reseeded CMV-rice cropping system was similar to the rice mono cropping up to panicle heading stage but it was high at mature stage, indicating that the nitrogen was provided by the CMV decomposition until later stage of rice. The yield components such as culm number $m^{-2}$ was greater and 1,000-brown rice weight was heavier than those of rice mono cropping but the ripened grain ratio was lower in naturally reseeded CMV-rice cropping system. Milled rice yield of naturally reseeded CMV-rice cropping system was similar to that of rice mono cropping. However, head rice percentage of milled rice was lower due to low ripened grain ratio. This result indicates that natural CMV reseeding technology can completely replace chemical fertilizer in CMV-rice cropping system.
The aim of this study was to assess the effect of the frequency of the L$N_2$ infusion on the ultrastructure, metabolism and development of the embryo after freezing and thawing by computerized cell freezer. Two-cell embryos of ICR mouse were randomly allocated into fresh (control), high-frequency freezing (group 1) and low-frequency freezing (group 2). For fresh and frozen-thawed intact 2-cell embryos, total ceil number in the blastocyst was counted by fluorescent microscope after Hoechst 33258 staining. Relative amount of $H_2O$$_2$ was measured by DCHFDA. Intracellular location and membrane potential of the mitochondria were evaluated by staining with rhodamine 123 and JC-1. The structure of actin filament was also evaluated by confocal microscope. DNA fragmentation was assessed by TUNEL method after development into blastocyst. The survival rate of intact embryo was higher in group 1 than group 2 (50.7% vs. 34.6% respectively, p<0.05). The blastocyst developmental rate was significantly low in group 2 (86.7%, 76.7% vs. 44.0% for control, group 1 and group 2 respectively, p<0.05). Total cell number in the blastocyst was also significantly lower in group 2 than control (79.5$\pm$12.9, 71.6$\pm$8.0, and 62.5$\pm$4.7 for control, group 1 and group 2 respectively, p<0.05). The relative amount of $H_2O$$_2$ was higher in group 2 than other groups (15.3$\pm$3.0, 16.6$\pm$1.6 vs. 23.4$\pm$1.8, p<0.05). After JC-1 staining, relative intensity of mitochondria with high membrane potential was significantly lower in group 2 than control and group 1 (17.2$\pm$3.8, 17.4$\pm$1.3 vs. 13.2$\pm$2.0, p<0.05). In group 2, partial deletion and aggregation of the actin filament was found. DNA fragmentation rate was also hieher for group 2 versus other groups (30.8%, 36.0% vs. 65.6%, p<0.05). The frequency of the L$N_2$ infusion is an important factor for the development of frozen-thawed mouse embryo. High-frequency infusion may prevent damages of cytoskeleton and mitochondria in the embryo probably by preventing the temperature fluctuation during dehydration phase. We speculate that the application of high-frequency infusion method in human embryo may be promising.
This study aimed to find out suitable culture conditions for the differentiation of human amniotic membrane-derived stem cells(HAM) into hepatocyte-like cells. Almost homogenous population of fibroblast-like cells was successfully isolated from the amniotic membrane. In comparison to the non-coated plates and in the absence of insulin/transferrin/selenium(ITS), HAM cultured on the fibronectin-coated plates and in the presence of ITS showed the more intense immunocytochemical staining against the albumin. Addition of both fibroblast growth factor(FGF)-1 and -2 to the differentiation medium gave stronger staining compared to the treatment with FGF-1 or -2 alone. Periodic acid Schiff's base staining of glycogen and morphological turnover of fibroblast-like appearance of HAM into round shape matched the results of immunocytochemical studies. When the efficiency of two-step culture method was examined on the differentiation of HAM into hepatocyte-like cells, all of the results of immunocytochemical staining, periodic acid Schiff's staining and morphological change exhibited effective hepatic differentiation of HAM compared to the continuous culture method. Immunoblot analyses of HAM- conditioned media against the albumin showed that the culture of HAM in the presence of both ITS and fibronectin always gave a stronger staining intensity than those in the absence of them, and that the addition of ether mixture of FGF-4 and either FGF-2 or transforming growth $factor(TGF)-{\alpha}$ to the culture medium significantly enhanced the albumin secretion by HAM. Based on these observations, it is suggested that HAM could differentiate into hepatocyte-like cells under a culture condition consisting of fibronectin and ITS, and addition of FGF-4 with either one of FGF-2 or $TGF-{\alpha}$ could enhance the hepatic differentiation of HAM.
Park, Hyun-Tak;Yoo, Dong-Geun;Han, Hyuk-Soo;Lee, Jeong-Min;Park, Soo-Chul
Economic and Environmental Geology
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v.45
no.5
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pp.513-523
/
2012
The upper sedimentary layer of the Ulleung Basin in the East Sea shows stacked mass-flow deposits such as slide/slump deposits in the upper slope, debris-flow deposits in the middle and lower slope, and turbidites in the basin plain. Shallow gases or gas hydrates are also reported in many area of the Ulleung Basin, which are very important in terms of marine resources, environmental changes, and geohazard. This paper aims at studying acoustic characteristics and distribution pattern of gas-related structures such as acoustic column, enhanced reflector, dome structure, pockmark, and gas seepage in the upper sedimentary layer, by analysing high-resolution chirp profiles. Acoustic column shows a transparent pillar shape in the sedimentary layer and mainly occurs in the basin plain. Enhanced reflector is characterized by an increased amplitude and laterally extended to several tens up kilometers. Dome structure is characterized by an upward convex feature at the seabed, and mainly occurs in the lower slope. The pockmark shows a small crater-like feature and usually occurs in the middle and lower slope. Gas seepage is commonly found in the middle slope of the southern Ulleung Basin. These gas-related structures seem to be mainly caused by gas migration and escape in the sedimentary layer. The distribution pattern of the gas-related structures indicates that formation of these structures in the Ulleung Basin is controlled not only by sedimentary facies in upper sedimentary layer but also by gas-solubility changes depending on water depth. Especially, it is interpreted that the chaotic and discontinuous sedimentary structures of debris-flow deposits cause the facilitation of gas migration, whereas the continuous sedimentary layers of turbidites restrict the vertical migration of gases.
The purpose of this study is to ascertain pattern design element in traditional palaces among those in the neighboring three nations of East Asia, notably Korea, China and Japan. The basic assumption underlying this study is that these northeastern Asian states have been developed a unique inter-cultural ties over long periods of time in history, culminating in their respective design cultures. Undoubtly the ultimate goal to be pursued, by so doing, has to be inquiry into the identical prototype of Korean pattern design element. In the West, the pattern is appreciated by an aesthetic level, but the East Asian pattern is a symbolic alphabet deeply rooted in religious and folk beliefs. The difference of the respective country comes from the expression style of the pattern the Chinese express the magnificent pattern with various color, the Korean do the moderate pattern with harmonious color with the nature and the Japanese do the stylized pattern with the material color. To sum up similarities and dissimilarities among the design element in traditional palaces of Korea, China, and Japan is as the following : It is to be noticed that the mainly common characteristics of the artistic design are 'naturalism', 'harmonious ideas 'and 'confucianism'. But the representation style of the design element is differed from the country.
To investigate the effects of the improvement of postharvest quality on fresh tomato, antimicrobial microperforated (AMP) films were prepared and their antimicrobial abilities were observed. AMP films were made by coating different types of natural antimicrobial agents such as cinnamon, clove, and clary sage essential oils into microperforated (MP) films. Cinnamon essential oil of 10% (v/v) has proven to be very effective as inhibitor of the mold growth on tomato, compared to the clove and clary sage essential oils. Quality changes of fresh tomatoes packed using the natural AMP films (AMP10 and AMP30) and MP films (MP10 and MP30) during storage were evaluated. Total microbial growth, weight loss, firmness, lycopene content, and decay rate as the major quality parameters were monitored over 9 days at $15^{\circ}C$. The oxygen transmission rates and mechanical properties between the natural AMP and MP films were also compared. There was no significant difference in change of oxygen transmission rate, tensile strength and elongation between the AMP and MP films. For storage studies, the freshness of tomato packaged in AMP30 film was higher than that in OPP film (the control), MP10, MP30, and AMP10 films. Especially, AMP30 film exhibited high efficiency compared to the control for tomato decay during storage periods. Based on the results, the microperforation and antimicrobial properties of the packaged films may significantly affect the maintenance of an optimum gas composition within the package atmosphere for increasing the storage life and quality of produce. They were also effective on the inhibition of microbial growth by controlled release of antimicrobial agent at an appropriate rate from the package into the tomato. Natural antimicrobial agent coating microperforated films could use potential functional package as a method of extending the freshness of postharvest tomato for storage.
The purpose of this present study was to investigate the effects of long-term treadmill running and aged garlic extract supplementation on weight, adipose tissue mass, lipid profiles and oxidative stress after exhaustion in high fat diet-induced obese rats. Thirty male Sprague-Dawley rats (3 weeks old) were used as subjects. High fat diets were fed to all subjects for 6 weeks in order to induce obesity. The subjects were divided into five groups - N (normal diet group), HD (high fat diet group), E (exercise group), EA (exercise with AGE diet group) and A (AGE diet group). Aerobic exercise was performed through treadmill running and AGE at a dosage of 2.86 kg/g was administered to rats 30 min before every exercise for 4 weeks. After 4 weeks, all groups completed acute treadmill running (speed increasing gradually to 25 m/min, 15% uphill grade) until exhaustion. Immediately after exhaustive treadmill exercise, the weight, adipose tissue mass, lipid profiles and oxidative stress of the rats were assayed. At the end of 6 weeks of high fat diets, body weight and body weight gain were significantly higher in the high fat diet groups than in the normal diet group (p<0.001). At the end of treadmill exercise with AGE intake for 4 weeks, body weight gain, visceral and epididymal fat of the E and EA groups were significantly decreased compared to other groups (p<0.05). There were no significant differences in gastrocnemius and soleus. T-C, HDL-C, TG and LDL-C were not significant in any of the groups. TBARS was significantly lower in the A group than in the E group (p<0.05). These results indicated that body weight gain, visceral and epididymal fat decreased in the E and EA groups, and TBARS levels were lower in the A group than the E group. Regular aerobic exercise intervention with AGE supplementation may also modify the adipose weight and improve the oxidant stress in obese rats.
Kim, Dong-Wook;Kim, Ji-Hyuk;Kim, Sung-Kwon;Kang, Geun-Ho;Kang, Hwan-Ku;Lee, Sang-Jin;Kim, Sang-Ho
Journal of Animal Science and Technology
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v.51
no.3
/
pp.207-216
/
2009
This experiment was conducted to investigate the effects of dietary supplementation of organic acid mixture on growth performance, cecal microflora, blood characteristics and immune response in broiler chicks and to prove the possibility of organic acid mixture as an alternative to antibiotics growth promotor. A total of four hundred eighty, 1-day-old male broiler chicks (Ross$\times$Ross 308) were randomly divided into 4 groups with 4 replicates of 30 birds each. The treatments were NC (free antibiotics), PC (basal diet with virginiamycin 10 ppm and salinomycin 60 ppm), 0.3% organic acid, and 0.5% organic acid. The final body weight and body weight gain were significantly higher in organic acid 0.5% than NC (P<0.05). The feed conversion ratio in all treated groups were significantly improved as compared to that of NC (P<0.05). The carcass rate and relative organs weight were not significantly difference among the groups. The relative weight and length of small intestine in PC were significantly decreased than the other groups. The numbers of cecal coliform bacteria and Salmonella in all treated groups were significantly lower than NC (P<0.05). The number of cecal lactic acid bacteria was not different among the groups. No significant differences among the groups were observed in the contents of total cholesterol, triglyceride, blood urea nitrogen (BUN), albumin, aspartate aminotransferase (AST), and alanine aminotransferase (ALT) in blood serum. The contents of total protein and globulin in blood serum of PC and organic acid treated groups were significantly increased as compared to those of NC (P<0.05). Therefore, albumin:globulin ratio of PC and organic acid treated groups was significantly lower than NC (P<0.05). The total white blood cell (WBC), heterophil, lymphocyte, and stress indicator (heterophil:lymphocyte ratio) were not significantly different among the groups. No significant difference was observed on the expression rate of splenic cytokines mRNA in organic acid treated groups compared to the control. Consequently, supplemental organic acid mixture improved the growth performance, and influenced positive effects on the intestinal microflora by inhibiting the growth of harmful bacteria without any adverse effects on relative weights of organs and blood biochemical parameters in broiler chicks.
To investigate the increased acid tolerance of a acid-resistant mutant Leuconostoc mesenteroides M-100 improved as a kimchi starter, proton permeability, ATPase acitivity, glycolysis activity, $Mg^{2+}$ releasement, and membrane fatty acid composition were studied and comprised with its wild type Leuconostoc mesenteroides Mw. In the proton permeability experiment, the mininum values of the average half time ($t_{1/2}$) of pH equilibration through the cell membrane of the Mw and the M-100 were about 8.6 min and 9.2 min in 150 mM KCI solution, respectivily. In the 3% NaCl solution, the $t_{1/2}$ values of the Mw and the M-100 were 6min and 8.6 min, respectivily. The values and pHs of maximal specific activities of ATPase originated from the Mw and the M-100 were 0.6U at pH 5.5 and 0.8U at pH 5.5, respectivily. The result of pH dependence of glycolysis showed that the M-100 had higher activities than that of Mw except at pH 5.0. The releases of magnesium from the Mw and the M-100 were observed about 36.5% and 13% at pH 4.0 after 2 hours, respectivily. The results of comparison of membrane fatty acid composition of the Mw with the M-100 showed that $C_{12}$, $C_{14}$, $C_{18:1}$, and $C_{19:0cyclo}$ were major different fatty acids between two strains and the content of $C_{18:1}$, and $C_{19:0cyclo}$ were 23.4%, 10.2% in the Mw and 15.1%, 12.2% in the M-100. These results indicated that acid tolerance of the M-100 was significantly improved in comparison with its wild type Mw.
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