• 제목/요약/키워드: Mixed culture

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Antioxidant Activity of Panax ginseng Flower-buds Fermented with Various Microorganisms (발효 미생물에 따른 인삼꽃의 항산화 활성)

  • Kim, Kyoung-Hee;Kim, Da-Mi;Byun, Myung-Woo;Yun, Young-Sik;Yook, Hong-Sun
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.42 no.5
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    • pp.663-669
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    • 2013
  • To improve the use of ginseng flower-buds, antioxidant activities of ginseng flower-buds fermented using a variety of useful microorganisms were analyzed. Non-fermented grape pomace was used as a control, while fermentation was carried out using Bacillus subtilis (BS), Lactobacillus plantarum (LP), Lactobacillus casei (LC), Candida utilis (CU), Saccharomyces cerevisiae strain CHY1011 (Y1), Saccharomyces cerevisiae strain ZP 541 (Y2), and a mixed-strain culture with LP, LC, and CU (M). The total polyphenol content of ginseng flower-buds was highest in the control compared to the other fermented ginseng flower-buds. DPPH radical and ABTS radical scavenging activity were also highest in fermented group by BS. The FRAP value (10 mg/mL) was highest in the control group but did not show a significant difference in the fermented group by BS. The highest reducing power activity was in the fermented group by LC compared to the other group, including the control. Therefore, the fermentation of ginseng flower-buds using various microorganisms, shows that fermentation with the Bacillus subtilis strain increases antioxidant activity. More research of its effects on other physiological activities will be needed.

Exploration of Functional Materials from Oriental Medicine Extracts Cultured with Tricholoma Matsutake Mycelium - (2) Effect of Extracts on Blood Glucose and Liver Function in Streptozotocin-Induced Diabetic Rat -

  • Kim, Hae-Ja;Choi, Yun-Hee;Cho, Hwa-Eun;Hong, Hak-Gi;Han, Jung-Ho;Lee, Ki-Nam
    • Journal of Society of Preventive Korean Medicine
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    • v.12 no.2
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    • pp.13-25
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    • 2008
  • The purpose of this study was to investigate extract from mixed culture with Trichloloma matsutake mycelium in oriental medicine and cereal medium(OCM) to develop new material for pharmaceutical products and medicinal food for diabetes mellitus. To evaluate of hypoglycemic activity of OCM extracts, we examined the inhibitory activity of ${\alpha}$-glucosidasein OCM, blood glucose level and liver function of streptozotocin(STZ) induced diabetic rat. Experimental group was divided into 6 groups: first, it was divided into normal control group(hereafter NC group) and diabetes-induced group, and diabetes-induced group was subdivided into diabetic control group(DC group), treated by hot water extracts group(HE), ultra sonic waves, micro waves, and micro bubble extracts g roup(UE), crude polysaccharide of HE group (HEE) and crude polysaccharide of UE group(UEE) at a dose of 300mg/kg/body weight, respectively. In diabetic-induced groups, after streptozotocin was melted in 0.01M citrate buffer at 50mg/kg/body weight, when the non-fasting blood glucose levelwas 300 mg/dl or more in blood collected from the tail vein, it was regarded as diabetic induction and then such diabetic-induced experimental animals were used in this experiment. At the end of the experiment, blood glucose level increased by 4.19% in DC group but significantly decreased by 32.34%, 19.19%, 17.81% and 17.64%, respectively in UEEE, UE, HE, and HEE groups. In the cases of AST, ALT, and ALP, the experiment group treated with extracts showed significantly lowerblood glucose level than DC group. The levels of BUN and uric acid were found to be lower in the UMPM extract group(UE) than HW extract group(HE), which implies that herb medicine medium extracts in which Tricholoma matsutake mycelia were cultured are effective in reducing impaired liver function as well as high blood glucose level caused by diabetes. In addition, the administration of low temperature UMPM extracts was found to produce better results than that of high temperature hot water extracts. In this regard, it is expected that extracts from herb medicine obtained by cultivating Tricholoma matsutake mycelia will be widely used as new ingredients for foods and medicines for prevention and treatment of diabetes.

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Biodiesel Production and Nutrients Removal from Piggery Manure Using Microalgal Small Scale Raceway Pond (SSRP) (미세조류 옥외배양 시스템을 이용한 돈분 액체 비료의 영양염류 제거 및 바이오디젤 생산)

  • Choi, Jong-Eun;Kim, Byung-Hyuk;Kang, Zion;Oh, Hee-Mock;Kim, Hee-Sik
    • Korean Journal of Environmental Biology
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    • v.32 no.1
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    • pp.26-34
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    • 2014
  • Due to the rapid energy consumption and fossil fuel abundance reduction, the world is progressively in need of alternative and renewable energy sources such as biodiesel. Biodiesel from microalgae offers high hopes to the scientific world for its potential as well as its non-competition with arable lands. Taking consideration to reduce the cost of production as well as to attain twin environmental goals of treatment and use of animal waste material the microalgal cultivation using piggery manure has been tested in this study. Unialgal strains such as Chlorella sp. JK2, Scenedesmus sp. JK10, and an indigenous mixed microalgal culture CSS were cultured for 20 days in diluted piggery manure using Small Scale Raceway Pond (SSRP). Biomass production and lipid productivity of CSS were $1.19{\pm}0.09gL^{-1}$, $12.44{\pm}0.38mgL^{-1}day^{-1}$, respectively and almost twice that of unialgal strains. Also, total nitrogen and total phosphorus removal efficiencies of CSS was 93.6% and 98.5% respectively and 30% higher removal efficiency compared to the use of unialgal strains. These results indicate that the piggery manure can provide microalgae necessary nitrogen and phosphorus for growth thereby effectively treating the manure. In addition, overall cost of microalgal cultivation and subsequently biodiesel production would be significantly reduced.

Studies on the Glucose Isomerizing Enzyme -Part III The Effects of Metal Ions on the Reaction of K-17 Strain's Glucose Isomerizing Enzyme- (포도당(葡萄糖) 이성화(異性化) 효소(效素)에 관(關)한 연구(硏究) -제3보(第三報) 분리(分離) 선정(選定)된 균주(菌株) 효소(酵素)의 작용(作用)에 미치는 금속염(金屬鹽)의 영향(影響)에 대(對)해서-)

  • Seu, J.H.;Kim, C.K.;Ki, W.K.;Rhee, I.K.;Kwon, T.J.;Woo, D.L.
    • Applied Biological Chemistry
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    • v.11
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    • pp.55-61
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    • 1969
  • This K-17 strain was not absolutely requiring xylose as an inducer for enzyme formations. The most activity of this enzyme was lost when treated at $75^{\circ}C$. for 30 hours but was not influenced at $70^{\circ}C$. for 70 hours of treatment. The activity of this enzyme was increased by the addition of magnesium ions or cobalt ions in the reaction system. In the studies, we found that the magnesium ions simply activate the enzyme reaction and the cobalt ions do not but protect the enzyme from heat inactvation. And it was also found the phosphate buffer solution was very suitable as glucose dissolving solvent on the enzyme reaction. The mixed carbon source medium containing glucose, fructose, sorbitol, xylose and sucrose was more favorable for enzyme production then a sole carbon source containing medium on the shaking culture method.

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Fuzzy reasoning for assessing bulk tank milk quality (Bulk tank milk의 품질평가를 위한 퍼지기반 추론)

  • Kim Taioun;Jung Daeyou;Jayarao Bhushan M.
    • Journal of Intelligence and Information Systems
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    • v.10 no.3
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    • pp.39-57
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    • 2004
  • Many dairy producers periodically receive information about their bulk tank milk with reference to bulk tank somatic cell counts, standard plate counts, and preliminary incubation counts. This information, when collected over a period of time, in combination with bulk tank mastitis culture reports can become a significant knowledge base. Several guidelines have been proposed to interpret farm bulk tank milk bacterial counts. However many of the suggested interpretive criteria lack validation, and provide little insight to the interrelationship between different groups of bacteria found in bulk tank milk. Also the linguistic terms describing bulk tank milk quality or herd management status are rather vague or fuzzy such as excellent, good or unsatisfactory. The objective of this paper was to develop a set of fuzzy descriptors to evaluate bulk tank milk quality and herd's milking practice based on bulk tank milk microbiology test results. Thus, fuzzy logic based reasoning methodologies were developed based on fuzzy inference engine. Input parameters were bulk tank somatic cell counts, standard plate counts, preliminary incubation counts, laboratory pasteurization counts, non agalactiae-Streptococci and Streptococci like organisms, and Staphylococcus aureus. Based on the input data, bulk tank milk quality was classified as excellent, good, milk cooling problem, cleaning problem, environmental mastitis, or mixed with mastitis and cleaning problems. The results from fuzzy reasoning would provide a reference regarding a good management practice for milk producers, dairy health consultants, and veterinarians.

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Isolation of Hypervirulent Agrobacterium spp from Korea and Application for Transformation of Tobacco (한국산 고감염 Agrobacterium spp의 분리 및 연초의 형질전환에 이용)

  • 양덕춘;정재훈;이정명
    • Korean Journal of Plant Tissue Culture
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    • v.25 no.3
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    • pp.207-217
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    • 1998
  • Total of 78 strains were characterized based on the morphological characteristics of colonies isolated on Schroth, and New & Kerr's media for selection of hypervirulent wild-type Agrobacterium spp from galls, hairy root-like process and soil of Populus, Malus, Salix and Diopyros in Korea. Among them, 48 strains were able to induce tumors in carrot disc. Hypervirulent A. tumefaciens SP101 and SM042 were identified as biotype 1 and biotype 2, respectively, These strains formed fast growing, larger tumors as compared to those induced by other strains. The binary vector pGA643 with kanamycin resistant gene was mobilized from E. coli MC100 into A. tumefaciens strain SM042 isolated from soil, and/or disarmed vector PC2760 using a triparental mating method with E. coli HB101/pRK2013, and transconjugants, A. tumefaciens SM643 and PC643 were obtained in minimal media containing kanamycin and tetracycline. Tobacco tissues were cocultivated with conjugant Agrobacterium and then transferred to selective medium with 2,4-D and kanamycin to induce the transformants. Calli were formed more efficiently in cocultivation with A. tumefaciens SM643 than that with A. tumefaciens PC643. Most of calli transformed with A. tumefaciens PC643 were friable and regenerated into normal plantlets, while the calli transformed with A. tumefaciens SM643 were compact, hard, and mixed with friable calli. The friable calli formed normal shoots, while compact calli did not form shoots but only grew to typical compact tumor calli. When the shoots formed directly from tobacco stems without callus induction after transformation by A. tumefaciens SM643 with wild-type Ti-plasmid, normal transformed plants can be induced without using disarmed Ti-plasmid.

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Effects of Concentrated Pig Slurry Separated from Membrane Filter and Several Environment-Friendly Agro-Materials Mixtures on the Growth and Yield of Lettuce (Lactuca sativa L.) in Hydroponics (막분리 돈분농축액비와 몇가지 친환경농자재의 혼합액이 수경재배에서 상추의 생육과 수량에 미치는 영향)

  • Ryoo, Jong-Won
    • Journal of Animal Environmental Science
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    • v.16 no.1
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    • pp.51-60
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    • 2010
  • This experiment was conducted to investigate the effects of concentrated pig slurry separated from membrane filter and by environment-friendly agro-materials mixtures on growth of lettuce in hydroponics. The swine waste treatment system having a ultra filtration and a reverse osmosis process was designed in this study. Filtration of pig slurry was necessary to prevent the hose clogging in hydroponics. Primary separation using ultra filter was followed by concentration by RO (Reverse Osmosis). The concentrated pig slurry (CS) was mixed by five different environment-friendly agro-materials mixtures. The chemical nutrient solution was the solution of National Horticulture Research Station for the growth of lettuce. The concentration of nutrient solution in hydroponics was adjusted a range of 1.5 mS/cm in EC. The concentrated pig slurry was low in phosphorus(P), suspended solid and heavy matal, but rich in potassium (K). The concentrated slurry was lowest in the growth characteristics of leaf lettuce. And also SPAD value in leaf was reduced in plot treated with concentrated slurry. But the growth of lettuce in the mixtures plot (CS+BM+AA, CS+BM+AA+SW) in hydroponics was significantly high compared to concentrated slurry. The fresh yield of lettuce was 78, 84% that of nutrient solution as 131.9, 142.2g in plot of CS+BM+AA and CS+BM+AA+SW, respectively. Our studies have shown that it is possible to produce organic culture using concentrated slurry and environment-friendly agro-materials mixture, although growth is slower than when using a conventional inorganic hydroponic solution.

Dietary Evaluation of the Freeze-Dried Alga Isochrysis aff. galbana for Larval Surrival of the Pacific Oyster Crassostrea gigas (동결건조한 Isochrysis aff, galbana를 이용한 굴 유생사육에 관한 연구)

  • LIM Hyun Jeong;PARK Mi Sun;CHO Ji Young;HONG Yong-Ki
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.32 no.5
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    • pp.654-658
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    • 1999
  • To investigate an efficient microalgal feed for lariat culture of the Pacific oyster Crassostrea gigas, we prepared three types of Isochrysis aff, galbana (T-iso) : 1) freshly Harvested feed, 2) concentrated feed and 3) freeze-dried feed. The chemical compositions and fatty acid content of these feeds were evaluated and survival rate and lipid content of oyster larvae fed by these feeds were also determined. There was no significant difference in all types of feed in the gross biochemical compositions, In the fatty acid composition, the freeze-dried feed showed a significant increase in the level of polyunsaturated fatty acid (PUFA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) than freshly Harvested feed, especially EPA was 7.35-fold higher than freshly Harvested feed. The survival rate of the oyster larvae was the highest when the larvae were fed with a diet of $10\%$ freeze-dried and $90\%$ concentrated feed; it was 2.1-fold higher than that fed with freshly Harvested food alone. Thereafter, the survival rate decreased with the increased substitutions of freeze-dried food, finally equalling that fed $100\%$ freshly harvested feed at the $30\%$ substitution. Larval lipid content of the oyster was also the highest when the larvae were fed with a diet of $10\%$ freeze-dried and $90\%$ concentrated feed. This increase was by 1.6-fold ver that fed $100\%$ freshly Harvested cells. Thus feed produced during slack times, on a seedling aquaculture farm, and preparedas a freeze-dried diet can be used, mixed with concentrated feed, to supply diets more efficiently and to improve the larvae survival rate of Pacific oyster.

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The study analyzed a diachronic distribution, social meanings and social evaluations of ONNA : 'Headline Database of Newspaper Articles' by KOKKEN were used as research data. (「여(女)」 관련 어휘의 사용실태 - 国研「ことばに関する新聞記事見出しデ?タベ?ス」를 분석대상으로)

  • Oh, Mi sun
    • Cross-Cultural Studies
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    • v.29
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    • pp.341-366
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    • 2012
  • 'Headline Database of Newspaper Articles' is a database which contains about 141,500 newspaper articles from 1949 to March, 2009. They are collected from two perspectives; 'language' and 'language life' by KOKKEN. There were 3312 newspaper articles (about 2.34%) which included the word ONNA at 'Headline Database of Newspaper Articles'. The number of newspaper articles related to ONNA started to increase in 1975 but they decreased afterwards. They increased rapidly in 1980 and maintained the condition. However, they started to decrease rapidly in 1990 and maintained the decreased condition. They increased rapidly again in 2004 and 2007. The main causes of rapid increase were the commercial message of instant noodles "I am the one who is making. I am the one who is eating." in 1975, newspaper articles related to "Starting of full-scale studies on female language" in 1980, comments of "active women" and "men's crime" related to a murder case of an elementary school student in Sasebo City and mixed attendance books in 2004, a comment of "Women are machines which give birth to babies" in 2007. Those six causes of rapid increase suggested that the perception of gender such as 'Men need to work outside and Women need to do housework and take care of child' which was fixed until then was changing and becoming a stereotype of virtual reality rather than reality. The vocabulary related to ONNA appeared 3411 times among 3312 newspaper articles which included ONNA. Typical forms of the vocabulary related to ONNA were and . They appeared 2390 times and occupied 70% of the whole data. (3411 times) The form of ONNANOKO among the vocabulary related to ONNA appeared 113 times and occupied a high rate. ONNANOKO(113) and other words such as SHOJO(115), JOJI(28), YOJO(9) (152 in total) implied that appearing of young women at newspaper articles were increasing. Also, the vocabulary related to 'female language' such as ONNAKOTOBA(28) ONNANOKOTOBA(10) and a woman's heart such as ONNAGOKORO(35) and ONNANOKIMOCHI(34) appeared frequently. The vocabulary related to JOSEI were divided into <$JOSEI^{**}$> and <$^{**}JOSEI$>. <$JOSEI^{**}$> were mainly related to an occupation. <$^{**}JOSEI$> were mainly used to express women by regional groups such as or combined with modifiers to express women such as . In case with modifiers, WAKAIJOSEI appeared 35 times and showed the highest frequency. It had negative evaluations in many cases. The vocabulary related to JOSI appeared on the form of <$JOSI^{**}$> and mainly associated with 'a girl's school' and 'a female student'.

The Study on the Fashion Style of Female Celebrities in Seoul Fashion Week (서울 패션 위크에 나타난 여성 셀러브리티 패션 스타일에 관한 연구)

  • Lee, Ji-Yeon;Kim, Jang-Hyeon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.10
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    • pp.284-295
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    • 2019
  • Celebrities form a dominant culture of one era and are cultivating influence to lead new fashion. Domestic women celebrities attending Seoul Fashion Week build their image as a fashion leader by exposing their own fashion aesthetics to the public. This promotes PR and sales of the brand of fashion designers in the collection. This study considers the fashion trends of women celebrities by analyzing the fashion style of women celebrities in Seoul Collection over the recent five years. The results of this study on contents analysis are as follows. First, straight silhouettes, achromatic colors, and an absence of a pattern or decoration comprised a high proportion. Celebrities preferred a modern and minimal style. Second, they preferred a feminine style that shows traditional feminine beauty through slim and princess silhouettes, one-piece dress or skirts, soft materials, and decorations with ruffles. In addition, as a matching jacket on one-piece dresses also appeared, it showed that celebrities attempted to change the chic feminine style with masculine beauty. Third, boxy silhouettes, multi-color mixed with colorful colors, graphic or lettering patterns, glittering materials and lots of details comprised a high proportion. This means celebrities pursue a maximal style that reveals their strong presence as fashion leaders.