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Quality Characteristics and Antioxidant Properties of Saccharified Banana Gruels (바나나 첨가량을 달리한 당화 바나나죽의 품질특성 및 항산화효과)

  • Kim, Jin Sook;Kim, Ja Young;Kim, Gi Chang;Kim, Kyung Mi;Kang, Myung Hwa
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.42 no.7
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    • pp.1071-1078
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    • 2013
  • We conducted this study in order to investigate the quality and antioxidant properties of saccharifed banana gruel containing different levels (0, 15, 30, and 45%) of banana puree. Saccharified banana gruel with different ratios of banana was prepared and proximate composition, sweetness ($^{\circ}brix%$), pH, total acidity, Hunter's color value, viscosity, free sugar, sensory evaluation, and physiological activities of the sample were measured. With increasing banana content, proximate composition, sweetness, and acidity of banana gruel increased, and pH showed a significant decrease (P<0.05). Saccharified banana gruel prepared with 15~45% banana showed significantly lower viscosity. As the level of banana increased, L-value decreased, whereas the a-value, b-value increased. Free sugar content of fructose, glucose, maltose, and sucrose showed a significant increase (P<0.05). Saccharified banana gruel with 30% added banana was the most preferred for color, flavor, taste, mouth-feeling, texture, and overall acceptability. The total phenolic compound contents of saccharified banana gruel with banana puree ranged from 1.73 to 5.75 mg/g. DPPH and ABTS radical scavenging activities of saccharified banana gruel with banana puree were 8.67~31.26% and 6.02~55.16%, respectively. With increasing banana content, total polyphenol contents, DPPH and ABTS radical scavenging activity of banana gruel showed a significant increase (P<0.05). From these results, we found that addition of 30% banana was the best method for preparation of gruel with high sensory quality.

The Effect of Dexamethasone on Gene Expression and Total Amount of Surfactant Protein A (스테로이드제가 Surfactant Protein A의 유전자 발현과 총단백량에 미치는 영향에 관한 실험적 연구)

  • Lim, Byung Sung;Sohn, Jang Won;Yang, Seok Chul;Yoon, Ho Joo;Shin, Dong Ho;Park, Sung Soo
    • Tuberculosis and Respiratory Diseases
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    • v.52 no.4
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    • pp.395-404
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    • 2002
  • Background : Surfactant protein A (SP-A) is important for regulating surfactant secretion, synthesis and recycling. However, It's regulation in vivo is unclear. SP-A has important roles in regulating surfactant metabolism as well as determining its physical properties. Glucocorticoid accelerates the morphologic differentiation of epithelial cells into type II cells and increase the rate of phosphatidylcholine synthesis. Methods : The authors investigated the effects of glucocorticoid on the accumulation of mRNA encoding SP-A and SP-A protein content. Adult rats were given various doses of subcutaneous dexamethasone and sacrificed after 24 hours and one week. SP-A mRNA was measured using a filter hybridization method. The lung SP-A protein content was determined using a double sandwich ELISA assay with polyclonal antiserum raised in rabbits against purified rat SP-A. Results : 1) The accumulation of SP-A mRNA in the dexamethasone treated group 24 hours after 0.2 mg/kg dexamethasone treatment was increased 38.8% compared to the control group. 2) The accumulation of SP-A mRNA in the dexamethasone treated group 1 week after 2 mg/kg dexamethasone treatment was 49.7% higher than the control group(P<0.01). 3) The total lung SP-A level was not altered after 24 hours by the 0.2mg/kg treatment. The total lung SP-A content one week after 2mg/kg dexamethasone administration was 373.7% higher than the control group(P<0.005). Conclusion : Dexamethasone treatment results in an increase in the SP-A mRNA and SP-A protein levels, suggesting that the pretranslational events in vivo may in part contribute to this process.

Studies on the Processing Conditions and the Taste Compounds of the Sardine Sauce Extracts (속성 정어리간장 엑스분의 가공조건 및 정미함분에 관한 연구)

  • LEE Eung-Ho;JEE Seung-Kil;AHN Chang-Bum;KIM Jin-Soo
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.21 no.1
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    • pp.57-66
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    • 1988
  • As a method of utilization of sardine, the processing conditions of the sardine sauce extracts and the taste compounds of products were investigated. To prepare the sardine sauce extracts, chopped sardine was mixed with $1\%$, onion powder, $1\%$ garlic powder, $1\%$ red pepper powder, loft koji and $50\%$ water, and then hydrolyzed under different conditions of hydrolysis. The optimum conditions for hydrolysis were $55^{\circ}C$, 6 hours, pH 6.5-7.0. After hydrolysis, the hydrolysates were heated at $100^{\circ}C$ for 20 minutes with $5\%$ soybean protein isolate for inactivation of enzymes and improvement of bitter taste of the hydrolysates. Finally, $10\%$ salt was added to develop the characteristic taste of sauce extracts. The major taste compounds of the products were free amino acids, non-volatile organic acids and nucleotides and their related compounds. The major free amino acids in the products were arginine, histidine, lysine, glutamic acid, phenylalanine, leucine and alanine. The contents of these free amino acids were in the range of $68.2\%\;to\;69.9\%$ of the total free amino acids of products. The major non-volatile organic acids ill the products were lactic acid and $\alpha-ketoglutaric$ acid which occupied more than $95\%$ of total non-volatile organic acids. The contents of free amino acids, non-volatile organic acids and nucleotides and their related compounds were not changed during storage. Total creatinine, betaine and TMAO were seemed to act an auxiliary role in taste of the products. Judging from the results of chemical experiments and sensory evaluation, the product prepared with koji and soybean protein isolate was excellent as seasoning materials.

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Effects of Dietary Organic Selenium Levels on Performance and Selenium Retention in Broiler Chickens and Laying Hens (유기태 셀레늄의 첨가가 육계 및 산란계의 생산성 및 셀레늄 축적에 미치는 영향)

  • Na, J.C.;Kim, S.H.;Jang, B.G.;Kim, J.H.;Yu, D.J.;Kang, G.H.;Kim, H.K.;Lee, D.S.;Lee, S.J.;Lee, J.C.;Lee, W.J.
    • Korean Journal of Poultry Science
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    • v.33 no.4
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    • pp.255-262
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    • 2006
  • Two experiments were conducted to investigate the effect of dietary organic selenium levels on performance and selenium retention in broiler chickens and laying hens. In experiment 1, the effects of dietary organic selenium levels on the weight gain, feed intake, feed conversion, and selenium retention of meat and liver in broiler chickens were investigated. For each growth phase, the basal diet was supplemented with 0 (control), 0.60, 1.20, 1.80 and 2.40 ppm Se from selenium yeast(SY). Weight gain, feed intake, and feed conversion were not affected by the selenium addition in diets. Breast muscle Se levels were linearly increased (P<0.05) as dietary Se level increased by SY. Selenium concentration of liver tissue was increased (P<0.05) in supplemental SY compared to the control, and was increased (P<0.05) in supplemental 1.20, 1.80 and 2.40 ppm SY compared to the 0.60 ppm SY. In Experiment 2, 12-week-experiment using Hy-Line laying hens (68 wk of age) was conducted to examine the effects of dietary organic selenium on egg Production, egg weight, daily egg mass, feed intake, feed conversion, egg quality, and selenium concentration of eggs. A corn-soybean meal basal diet was supplemented with 0 (control), 0.30, 0.60, 0.90 and 1.20 ppm Se from selenium yeast (SY). Egg Production was significantly improved(P<0.05) in supplemental 0.30 and 0.90 ppm SY compared to the control and 0.60 ppm SY during week 1 to 12, but daily egg mass, feed intake, and feed conversion showed no difference in supplemental SY and control. Haugh unit, yolk color and eggshell breaking strength showed no difference in supplemental SY and control. Eggshell thickess was significantly (P<0.05) higher in supplemental 0.60 and 1.20 ppm SY compared to the 0.90 ppm SY in week 9. Egg Se levels were linearly increased (P<0.05) as dietary Se level increased by SY.

Effects of hydrocolloids on wheat flour rheology (Hydrocolloid의 첨가가 밀가루 반죽의 특성에 미치는 영향)

  • 임경숙;황인경
    • Korean journal of food and cookery science
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    • v.15 no.3
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    • pp.203-209
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    • 1999
  • The effect of several hydrocolloids on the rheological behavior of wheat flour was investigated. The influence of the selected hydrocolloids (alginate, carrageenan, CMC, guar, locustbean and xanthan) on wheat flour was tested by using two different techniques; amylograph and texture analyzer. In order to have a general overview of their effects hydrocolloids were chosen from different sources implying a broad diversity of chemical structures. The hydrocolloid addition decreased the brightness(L) but increased yellowness(b). The interaction between hydrocolloid and flour produces a slight modification of the amylogram parameters, being the most clearly affected parameter breakdown, which is increased by carrageenan, guar and xanthan. Hardness and cutting force were augmented by hydrocolloid addition, while springeness was decreased except guar and locustbean. In summary, when looking for the improvement of the noodle texture, guar, locustbean are the best candidate additives due to their effects on pasting and texture properties. These hydrocolloids increase the hardness, cutting force, gumness, chew-ness, so were thought to increase the eating quality. So, each tested hydrocolloid affected in a different way the rheological properties of wheat flour, the results obtained are important for the appropriate use of these hydrocolloid as ingredients in the noodle making process.

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Sensory and Physical Characteristics of Hwajeun Depended on the Various Levels of Oil Amounts and frying Time (기름의 양과 지지는 시간에 따른 화전의 관능적 및 물리적 특성)

  • 이승현;박정은;장명숙
    • Korean journal of food and cookery science
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    • v.19 no.6
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    • pp.765-771
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    • 2003
  • The aim of this study was to standardize the various methods and recipes of Hwajeun (glutinous rice pancake with flower) appeared in the literature. For this purpose, the effects on the sensory and rheological characteristics of Hwajeun in terms of the various levels of oil and frying times were investigated. This experiment consisted of a sensory evaluation in terms of the acceptance (color, flavor, oily feeling, softness, chewiness, adhesiveness, taste and overall preference) and objective evaluation performed by a texture analyzer, a color difference meter and measurements of the water content and oil absorption. The moisture content of the treatments as a function of the frying time, S7, showed a significantly(p<0.01) low value, and the oil absorption of the Hwajeun made with different frying times increased in proportion to the increment of the frying time(p<0.001). In terms of color, the b value of the Hwajeun made with 16g oil for frying showed a higher value than the others. In the two bite compression test, the hardness of the Hwajeun made with 4g oil for frying showed a significantly (p<0.001) high value among the S2 and S3 samples. As a result of the sensory evaluation for the Hwajeun made with various amounts of oil and frying times, the Hwajeun made with 16g oil for frying and a 2 min frying time for each side (S6) was the most preferred in terms of the softness, chewiness, taste and overall preference of the sensory evaluation

Discussion by UNCITRAL for Development of International Commercial Conciliation and Arbitration Systems (국제상사조정 및 중재제도 개선에 관한 UNCITRAL 논의동향)

  • Lee, Kang Bin
    • Journal of Arbitration Studies
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    • v.10 no.1
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    • pp.3-25
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    • 2000
  • At its thirty-second session in 1999, the UNCITRAL had before it the requested note entitled "Possible future work in the area of international commercial arbitration." After concluding the discussion on its future work in the area of international commercial arbitration, it was agreed that the priority items for the working group should be conciliation, requirement of written form for the arbitration and enforceability of interim measures of protection. the Commission entrusted the work to the Working Group on Arbitration which held its thirty-second session at Vienna from 20 to 31 March 2000. The Working Group discussed agenda item 3 on the basis of the report of Secretary General entitled "Possible uniform rules on certain issues concerning settlement of commercial disputes : conciliation, interim measures of protection, written form for arbitration agreement." At its thirty-three session in 2000, the UNCITRAL had before it the report of Secretary General on agenda item 3 discussed by the Working Group. The Working Group discussed the issues relating to certain aspects of conciliation proceedings ; (1) Admissibility of certain evidence in subsequent judicial or arbitral proceedings ; (2) Role of conciliatior in arbitration or court proceedings ; (3) Enforceability of settlement agreements reached in conciliation proceedings ; (4) Other possible items for harmonized treatment : a) Admissibility or desirability of conciliation by arbitrators b) Effect of an agreement to conciliate on judicial or arbitral proceedings c) Effect of conciliation on the running of limitation period d) Communication between the conciliator and parties ; disclosure of information e) Role of conciliator. It was generally considered that decisions as to the form of the text to be prepared should be made at a later stage when the substance of prepared solutions would become clearer. However, it was noted that model legislative provisions seemed to be appropriate form for a number of matters proposed to be discussed in the area conciliation. There was general support in the Working Group for the proposition to perpare a legislative regime governing the enforcement of interim measures of protection ordered by arbitral tribunals. It was generally considered that legislative regime should apply to enforcement of interim measures issued in arbitration taking place in State where enforcement was sought as well as outside that State. It was generally observed that there was a need for provisions which conformed to current practice in international trade with regard to requirements of written form for arbitration agreement. The view was adopted by the Working Group that the objective of ensuring a uniform interpretation of the form requirement that responded to the needs of international trade could be achieved by : preparing a model legislative provision clarifying, for avoidance of doubt, the scope of article 7(2) of the UNCITRAL Model Law on International Commercial Arbitration : and adopting a declaration, resolution or statement addressing the interpretation of the New York Convention that would reflect a broad understanding of the form requirement. There was general agreement in the Working Group that, in order to promote the use of electronic commerce for international trade and leave the parties free to agree to the use of arbitration in the electronic commerce sphere, article II(2) of the New York Convention should be interpreted to cover the use of electronic means of communication as defined un article 2 of the Model Law on Electronic Commerce and that it required no amendment to do that. The UNCITRAL may wish to consider to the desirability of preparing uniform provisions on any of those issues concerning conciliation and arbitration proceedings, possibly indicating whether future work should be towards a legislative text or non-legislative text.

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독일의 포도 재배와 와인산업

  • Bang, Won-Gi
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2012.05a
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    • pp.10-10
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    • 2012
  • 독일의 와인 생산지는 라인 강과 그의 지류를 따라 대개 서남쪽에 산재해 있다. 독일은 102,000 헥타르(2005년, 전 세계 포도밭의 1.3%)의 포도밭을 가지고 있으며, 매년 약 915만 3천 헥토리터(2005년, 전 세계 생산량의 3.24%)의 와인을 생산하고 있다. 이는 독일이 포도 재배면적으로는 세계 13번째 국가이며, 와인 생산량으로는 세계 8위를 나타내는 수치이다. 독일은 원래 화이트와인의 나라였으나, 레드와인의 생산이 1990년대와 2000년대에 급속히 증가하였다. 현재(2011년) 독일 포도밭의 64%가 화이트와인을 위해 경작되고 있으며, 36%가 레드와인을 위해 경작되고 있다. 화이트와인을 위한 주요품종이 리슬링(Riesling, 22%), 레드와인을 위한 주요품종은 쉬페트부르군더(Sp$\ddot{a}$tburgunder, Pinot Noir, 11.5%)로 알려져 있다. 독일은 다양한 형태의 와인을 생산한다. 드라이(dry), 세미스위트(semi-sweet)와 스위트한 화이트와인들(sweet white wines), 로제와인, 레드와인과 발포성 와인인 젝트(Sekt, 독일형 샴페인)이다. 독일 포도밭의 위치가 북쪽이므로, 독일은 유럽의 다른 나라와는 전혀 다른 다수의 훌륭한 품질의 와인을 생산한다. 오늘날 독일의 포도재배는 1세기에서 4세기쯤의 고대 로마시대부터 시작된 것으로 알려져 있다. 카롤루스 대제(Carolus Magnus, 747/748-814)의 시대 전에 독일의 포도재배는 비록 독점적이지는 않았으나 라인의 서부지역에서 주로 경작되었다. 카롤루스 대제는 포도재배를 라인가우에 보급한 것으로 추측되고 있다. 1787년에 아우스레제(Auslese)로 시작한 수확된 성숙도에 기반을 둔 와인의 후속 분류는 품질보증 고급와인 체계의 초석을 놓았다. 대부분의 현재 독일 와인법은 1971년에 도입되었으며, 그 이후 사용되어온 바와 같이 품질보증 고급와인의 이름이 정의되었다. 독일와인 지역은 세계에서 가장 북쪽인 북위 $50^{\circ}$도 부근에 위치한다. 북쪽의 기후이기 때문에 적합한 포도 품종에 대한 연구가 되어왔으며, 가이젠하임 포도 육종 연구소에서 뮐러-투르가우와 같은 많은 교배종이 개발되어 왔다. 최근에 지역 및 국제 수요가 높은 품질의 와인을 요구함으로서 리슬링의 재배가 증가해 왔다. 와인은 모두 자주 산맥으로 보호된 주로 라인 강과 그 지류인 강 주변에서 생산된다. 강들은 온도를 조절하는 충분한 미기후 효과를 갖는다. 토양은 태양의 열을 흡수해서 그것을 밤에 보존하는 점판암이다. 독일 와인산업은 다수의 작은 포도밭 소유자로 이루어져 있다. 1989/90년에 서부독일에 76,683개의 크고 작은 기업이 있었으나, 1999년에는 68,598로 줄어들었으며, 2010년도의 조사에 의하면 48,009개의 기업이 조업 중인 것으로 나타났다. 그들 자신의 와인을 팔지 않거나 상업화할 수 없는 더 작은 포도 재배자는 여러 가지 선택이 가능하다. 즉 포도를 팔거나, 와인-생산 조합의 기본 와인으로서 그것을 사용하는 와인제조 회사에게 대량으로 와인을 판다. 정말로 좋은 장소에 포도밭을 가진 사람들도 포도밭을 전체적으로 경작하기를 원하는 대량 생산자들에게 빌려주는 선택을 할 수 있다. 2010년에 각각 5ha 이상을 지닌 5,974개의 포도밭 소유자가 독일 전 포도밭 면적의 70.3%를 소유하며, 생업 와인생산자와 기업이 여기에 속한다. 그러나 그들 자신의 포도밭을 지닌 진정으로 큰 와인 양조장은 독일에서는 희귀하다. 2007년의 고에 묘 와인가이드(Gault & Millau Weinguide)에 의한 독일에서 가장 좋은 것으로 생각되는 10개의 와인 양조장 중에 10개가 10.2-19ha의 포도밭, 하나(Weingut Robert Weil, 산토리 소유)가 75ha의 포도밭을 소유하였다. 이것은 대부분의 높은 순위의 독일 와인 양조장 각각 매년 약 100,000병의 와인을 생산한다는 것을 의미한다. 가장 큰 포도밭 소유자는 헤센의 주 와인 양조장(Hessische Staatsweing$\ddot{u}$ter)으로 헤센의 연방주에 의한 소유이며, 200ha의 포도밭을 지니고, 3개의 별도 와인 양조장에서 제조된다. 가장 큰 개인이 소유한 와인 양조장은 팔츠에 있는 85.5ha를 지닌 독토르 뷔르클린-볼프(Weingut Dr. B$\ddot{u}$rklin-Wolf)이다. 2009년도의 독일에서 총 와인 생산량은 910만 헥토리터였으며, 그중에 206만 8천 헥토리터를 수출하였다. 그러나 그해에 총 수입와인 양은 1,266만2천 헥토리터였다.

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Investigation on Korean Local Maize Lines VI. Use of a Korean Local Maize Line for Silage Production (재래종 옥수수 수집종에 대한 특성조사 제6보 청예를 위한 재래종 옥수수의 이용에 관한 연구)

  • Choe, B.H.;Park, J.S.;Kim, Y.R.;Chung, S.K.
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.26 no.3
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    • pp.251-256
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    • 1981
  • Silage yield and nutritional values of a locally collected Korean corn line with high tillering and earing characteristics were investigated at plant densities from 2778 to 8333 plants/ l0a. This line and a non-tillering and nonprolific corn as a check were grown at four plant densities and at three planting dates. The Korean local line abbreviated as MET had the highest dry matter per l0a. The highest dry matter of the MET line compared with the check hybrid was due to the highest dry leaf weight of the MET line. The highest dry leaf weight of the MET line was due to the increased number of tillers of the MET line. Other plant parts such as ear weight, kernel weight and cob weight of the MET line were lower than those of the check hybrid. The dry husk weight per l0a of the MET line was higher than that of the check hybrid, probably due to the increased number of ears in the MET line. The total embryo production per 10 a of the MET line was significantly higher than that of the check hybrid. The increased portion of embryo of the MET line is probably responsible for the higher TON values of the MET line. No interaction between variety x planting dates or planting density was found, indicating that the MET line and check hybrid were both the same in effects of planting dates and densities. Both line and hybrid showed the highest dry matter production when the planting density was high and planting dates was early. When silage was made from either MET line or check hybrid the nutritional values in terms of crude protein, crude fat, fiber, and ash contents of the MET line were similar to those of the check hybrid. But the TON of the MET line was higher than that of the check hybrid, while the OCP of the MET line lower than that of the check hybrid. Amino acid contents of the MET line were also comparable to those of the check hybrid, while lysine content of the MET line was 10% higher than that of the check hybrid.

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Partially purified Toxoplasma gondii antigens by immunoaffinity chromatography (Immunoaffinity chromatography를 이용한 톡소포자충 항원의 부분정제)

  • 안명희;현근희
    • Parasites, Hosts and Diseases
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    • v.35 no.4
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    • pp.251-258
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    • 1997
  • Tachyzoite antigens of Toxoplosnc gondii (RH) were partially purified by immunoaffinity chromatography. The cultivated ToxopLusmc in uiuo (mouse) and in nitro (Hep-2 cell) and peritoneal fluid of T. Bondii infected mice were collected for antigen analy- sis. Tachyzoite antigens collected from infected mouse showed positive bands of 76 kDa, 70 kDa,64 kDa, 53 kDa, 46 kDa, 44 kDa, 41 kDa, 35 kDa, 25 kDa, 18 kDa, and 13 kDa on immunoblot with anti-Toxoplcsmn rabbit sera, and those from infected Hep-2 cells revealed reactive bands of 70 kDa,64 kDa,53 kDa,35 kDa,28 kDa, and 13-10 kDa. After applying to an IgG-Sepharose column, two elusion peaks, E-1 and I-2 fractions, were obtained from both soluble antigen of T. gondii and the peritoneal fluid of infected mice, respectively. Immunoblots of soluble antigen with immunized rabbit sera revealed positive bands of 97 kDa, 63 kDa, 53 kDa and 35 kDa from I-1 fraction and 53 kDa and 35 kDa from I-2. In the case of the eluted peaks from mice peritoneal fluid, E-1 showed protein bands of 84 kDa,76 kDa,53 kDa and 29 kDa bands and 53 kDa and 45 kDa from I-2 on immunoblots. Serum IgG antibody titer of mice immunized with T gonnii tachyzoites was increased on 1 week after booster immunization when analysed by ELISA using crude antigen, while it was elevated on 3 weeks after booster immunization by ELISA using puri- fied antigen.

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