• Title/Summary/Keyword: B56

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INTEGRALS INVOLVING LAGUERRE, JACOBI AND HERMITE POLYNOMIALS

  • Nath, B.
    • Kyungpook Mathematical Journal
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    • v.12 no.1
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    • pp.115-117
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    • 1972

  • The purpose of the present paper is to evaluate certain integrals involving Laguerre, Jacobi and Hermite polynomials. These integrals are very useful in case of expansion of any polynomial in a series of Orthogonal polynomials [1, Theo. 56].

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Purification of Xylogone sphaerospora ${\beta}$-mannanase and Growth Activity of Bifidobacterium spp. by Konjac Glucomannan Hydrolysates (Xylogone sphaerospora 유래 ${\beta}$-mannanase 정제 및 Konjac Glucomannan 가수분해 올리고당의 중합도별 Bifidobacterium spp.에 대한 증식활성)

  • Lee, Hee-Jung;Park, Gwi-Gun
    • Applied Biological Chemistry
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    • v.51 no.3
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    • pp.159-163
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    • 2008

  • Xylogone sphaerospora ${\beta}$-mannanase was purified by Sephadex G-100 column chromatography. The specific activity of the purified enzyme was 8.44 units/ml protein, representing an 56.27-folds purification of the original crude extract. The final preparation thus obtained showed a single band on SDS-polyacrylamide gel electrophoresis. The molecular weight was determined to be 42kDa. Konjac glucomannan was hydrolyzed by the purified ${\beta}$-mannanase, and then the hydrolysates was separated by activated carbon column chromatography. The main hydrolysates were composed of D.P. (Degree of Polymerization) 3 and 4 glucomannooligosaccharides. For elucidate the structure of D.P 3 and 4 glucomannooligosaccharides, sequential enzymatic action was performed. D.P 3 and 4 were identified as M-G-M and M-M-G-M (G- and M- represent glucosidic and mannosidic link-ages). To investigate the effects of konjac glucomannooligosaccharides on in vitro growth of Bifido-bacterium longum, B. bifidum, B. infantis, B. adolescentis, B. animalis, B. auglutum and B. breve. Bifidobacterium spp. were cultivated individually on the modified-MRS medium containing carbon source such as D.P. 3 and D.P. 4 glucomannooligosaccharides, respectively. B. longum and B. bifidum grew up 3.9-fold and 2.8-fold more effectively by the treatment of D.P. 4 glucomannooligosaccharides, compared to those of standard MRS medium. Especially, D.P. 4 was more effective than D.P. 3 glucomannooligosaccharide on the growth of Bifidobacterium spp.

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Cytotoxicity on Cancer cells of the Extract of Sophora flavescens Ait. (고삼 추출물의 암세포에 대한 세포독성)

  • Lee, Hyun-Ok;Chun, Ju-Yeon;Lee, Ji-Youn;Kim, Chang-Hee
    • Journal of dental hygiene science
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    • v.2 no.1
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    • pp.15-19
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    • 2002

  • In this study, we investigated the cytotoxicity of ethyl acetate subfraction of Sophora flavescens Ait.(EASS) on cancer cells using MTT quantitative analysis. The EASS was cytotoxicity from the concentration of 6.25 g/ml to KB, B16, HeLa, and MCF-7 cancer cells and the cytotoxicity was significant, (p < 005) increased as the concentrations of EASS were increased, (12.5, 25, 50, 100 g/ml). The IC for KB, B16, HeLa, and MCF-7 were 56.58, 65.43, 83.95, and 106.65 g/ml, respectively. Conclusively, the EASS inhabited the growth of cancer cells and the order of potency of cytotoxicity was KB > B16 > HeLa > MCF-7.

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Nutritional Survey on the Children Lunch-Box of Primary School in Junbuk Province (전북지방(全北地方) 국민학교(國民學校) 학생(學生)의 도시락 영양실태조사(營養實態調査))

  • Choe, Sun-Nam
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.11 no.2
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    • pp.13-20
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    • 1982

  • The primary purpose of this research paper is to study the nutrition intake status of primary school children and their physique index. Three hundred and ten children of 4th grade, 10 years old, 4 school class in Junbuk province had been selected. Calorie and nutrients were found to be below the recommended level, especially in calcium an vitamin $B_2$. Animal-protein intake averaged about 33% of total protein intake. Total calorie intake were composed of 84% from carbohydrate, 5% from fat and 11% from protein in the case of boys. The girls were 83%, 6%, 11%, respectively. The staple of lunch-boxes for boys supplied 84% of RDA in calorie, 66%, in total-protein 38%, calcium, 32%, Iron, 56%, vitamin $B_1$, 37%, vitamin $B_2$ and 63%, in niacin for girls were 82%, 52%, 28%, 37%, 39%, 37%, 51% respectively.

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