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| Registros recuperados: 23 | |
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| 福田, 健二; 浦島, 匡; Fukuda, Kenji; Urashima, Tadasu. |
| Lactic acid bacteria (LAB) are commonly used in food industries，especially for the production of fermented dairy products. During fermentation process，some dairy LAB produce exopolysaccharide(EPS)，providing good mouthfeel properties to the products by modifying their textures. In general， EPS is divided into two groups based on their monosaccharide composition; homo-EPS and hetero-EPS. It is believed that the major physiological function of EPS is the first line of biological defense against phagocytosis，phage attack， antibiotics，toxic metal ions，and physical stresses such as desiccation and osmotic stress. Besides，EPS from dairy LAB exhibits bioactive characteristics，e.g.，anti-microbial，anti-tumoral，hypotensive，prebiotic，immuno-stimulative，and... |
| Ano: 2010 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3080 |
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| Urashima, Tadasu; Yamamoto, Tomoko; Hirayama, Kentaro; Fukuda, Kenji; Nakamura, Tadashi; Saito, Tadao; Newgrain, Keith; Merchant, Jim; Green, Brian; Messer, Michael. |
| Milk oligosaccharides were separated from the carbohydrate fraction of milk of the tiger quoll a species of marsupial that is closely related to the eastern quoll, Dasyurus viverrinus. They were characterized by H-1 - nuclear magnetic resonance spectroscopy and matrix - assisted laser desorption/ionization time-of-flight mass spectrometry. The following oligosaccharides were identified; Gal(beta 1-3) Gal(beta 1-4) Glc, Gal(beta 1-3) Gal(beta 1-3) Gal(beta 1-4) Glc, Gal(beta 1-3)[Gal(beta 1-4) GlcNAc(beta 1-6)] Gal(beta 1-4) Glc, Gal(beta 1-3) Gal(beta 1-3)[Gal(beta 1-4) GlcNAc(beta 1-6)] Gal(beta 1-4) Glc, Gal(beta 1-3)[Gal(beta 1-4) GlcNAc(beta 1-6)] Gal(beta 1-3) Gal(beta 1-4) Glc, Gal(beta 1-3)[Gal(beta 1-3) Gal(beta 1-4) GlcNAc(beta 1-6)] Gal(beta 1-4)... |
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Palavras-chave: Tiger quoll; Milk oligosaccharides; Marsupials. |
| Ano: 2016 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4528 |
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| Goto, Kohta; Fukuda, Kenji; Senda, Akitsugu; Saito, Tadao; Kimura, Kazumasa; Glander, Kenneth E.; Hinde, Katie; Dittus, Wolfgang; Milligan, Lauren A.; Power, Michael L.; Oftedal, Olav T.; Urashima, Tadasu; 浦島, 匡; 福田, 健二. |
| Human and great ape milks contain a diverse array of milk oligosaccharides, but little is known about the milk oligosaccharides of other primates, and how they differ among taxa. Neutral and acidic oligosaccharides were isolated from the milk of three species of Old World or catarrhine monkeys (Cercopithecidae: rhesus macaque (Macaca mulatta), toque macaque (Macaca sinica) and Hamadryas baboon (Papio hamadryas)) and three of New World or platyrrhine monkeys (Cebidae: tufted capuchin (Cebus apella)and Bolivian squirrel monkey (Saimiri boliviensis); Atelidae: mantled howler (Alouatta palliata)). The milks of these species contained 6-8% total sugar, most of which was lactose: the estimated ratio of oligosaccharides to lactose in Old World monkeys (1:4 to... |
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Palavras-chave: Old world monkey; New world monkey; Milk oligosaccharide; Rhesus macaque; Toque macaque; Baboon; Capuchin; Mantled howler; Squirrel monkey; N-glycolylneuraminic acid. |
| Ano: 2010 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3144 |
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| 中村, 正; 菅井, 理子; 男澤, 綾; 有賀, 秀子; 小疇, 浩; キュラ, キーユキア; 荒井, 威吉; 浦島, 匡; Nakamura, Tadashi; Sugai, Michiko; Nakamura, Aya; Ariga, Hideko; Koaze, Hiroshi; Kiiyukia, Cura; Arai, Ikichi; Urashima, Tadasu. |
| Ano: 1999 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1877 |
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| 有賀, 秀子; 高橋, セツ子; 倉持, 泰子; 浦島, 匡; 筒井, 静子; Ariga, Hideko; Takahashi, Setsuko; Kuramochi, Yasuko; Urashima, Tadasu; Tsutsui, Shizuko. |
| Ano: 1988 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1848 |
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| Nozaki, Hirofumi; Miyamoto, Akio; Hayashi, Ken-Go; Matsui, Motozumi; Yoshida, Takashi; Nakamura, Tadashi; Arai, Ikichi; Urashima, Tadasu; 宮本, 明夫; 松井, 基純; 中村, 正; 浦島, 匡. |
| The activity of α3-D-mannoside-β-1,2-N-acetylglucosaminyltransferase I (GnT I; EC 2.4.1.101), which catalyzes the first step in the conversion of oligomannose to complex or hybrid N-glycans of glycoproteins, was detected in bovine follicular fluid (bFF). The GnT I activity in bFF had a pH optimum of 5.8 and an absolute requirement for either Co2+, Mn2+, or Mg2+, the activity being stimulated by these cations in the above order. The apparent Km value for α1-3α1-6 mannopentaose of GnT I in bFF was 2.17 mM. The substrate specificity for the GnT I activity decreased in the following order: α1-3α1-6 mannopentaose> α1-3α1-6 mannotriose>α1-3 mannobiose. The GnT I activity in bFF from large atretic follicles was significantly higher than in that from large... |
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Palavras-chave: N-acetylglucosaminyltransferase I; Dominant follicle; Atretic follicle; Follicular fluid; Bovine. |
| Ano: 2004 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4185 |
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| Leo, Fiame; Hashida, Shukichi; Kumagai, Daiju; Uchida, Kenji; Motoshima, Hidemasa; Arai, Ikichi; Asakuma, Sadaki; Fukuda, Kenji; Urashima, Tadasu; 福田, 健二; 浦島, 匡. |
| A neutral exopolysaccharide produced in large amounts by Lactobacillus fermentum TDS030603 was purified from culture supernatants and its structure determined by monosaccharide analysis, methylation analysis and 1H-NMR spectroscopy. Optimum conditions for the production of this exopolysaccharide by the above bacterial strain, when cultured using cheese whey medium or MRS broth, were also investigated. The exopolysaccharide was found to be composed of D-galactose and D-glucose in the molar ratio of 1:2.5 and to consist of one major as well as one minor saccharide, both of which contained a tetrasaccharide repeating unit consisting of two α and two β anomers. The major saccharide contained non-reducing glucopyranose, O-3 substituted glucopyranose, O-6... |
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Palavras-chave: Lactic acid bacteria; Exopolysaccharide; Lactobacillus fermentum TDS030603. |
| Ano: 2007 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4183 |
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| Mori, Fumiki; Nakamura, Tadashi; Nakamura Osawa, Aya; Arai, Ikichi; Urashima, Tadasu; 森, 史樹; 中村, 正; 男澤－中村, 綾; 荒井, 威吉; 浦島, 匡. |
| Cell wall polysaccharides were separated from Leuconostoc mesenteroides subsp. cremoris isolated from “Filmjolk"，a fermented milk made commercially in Sweden. Two Components(CNPI and CNP2) were further purified by gelfiltration on HPLC and the molecu1ar weights were determined to be 850，000 and 81，000. CNP-2 was shown to contain two polysaccharides in major and minor by an lH-NMR. The major polysaccharide was shown to have a heptasaccharide repeating unit which contained five α and two β anomers，and also contained non reducing galactopyranose，O-2，3 disubstituted glucopyranose，O-3 substituted galactopyranose and O-3，6 disubstituted galactopyranose as units in a molar ratio of 3:1:1:2. On the other hand，the minor polysaccharide was shown to have a... |
| Ano: 2000 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2921 |
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| Asakuma, Sasaki; Yokoyama, Tomoko; Kimura, Kazumasa; Watanabe, Yoko; Nakamura, Tadashi; Fukuda, Kenji; Urashima, Tadasu; 福田, 健二; 浦島, 匡. |
| It is believed that human milk oligosaccharides (HMO) act as receptor analogues that inhibit the attachment of pathogenic microorganisms to the infant colon, but the direct involvement of HMO in anti infection has not as yet been demonstrated. The present study was conducted to clarify whether HMOs as well as commercially available galacto oligosaccharides (GO), from which lactose has been removed, affect the expression of toll-like receptor (TLR) 2 and 4, and of MD2 mRNA in the HT-29, human colonic cell line. HT-29 cells were treated with neutral human milk oligosaccharides (nHMOs), which had been separated from the acidic oligosaccharide fraction and also from lactose, as well as with GOs. HT-29 cells were treated with specific oligosaccharides of major... |
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Palavras-chave: Human milk oligosaccharides; Galacto-oligosaccharides; Toll-like receptor; Intestinal cell; HT-29 cells. |
| Ano: 2010 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4184 |
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| Sumiyoshi, Wataru; Urashima, Tadasu; Nakamura, Tadashi; Arai, Ikichi; Nagasawa, Takashi; Saito, Tadao; Tsumura, Norihiko; Wang, Bing; Brand-Miller, Janette; Watanabe, Yoko; Kimura, Kazumasa; 住吉, 渉; 浦島, 匡; 中村, 正; 荒井, 威吉; 長澤, 孝志; 齋藤, 忠夫; 津村, 宣彦; 渡邉, 陽子; 木村, 一雅. |
| The concentrations of the six major sialyl oligosaccharides found in the milk of 24 Japanese women were determined using reverse phase high performance liquid chromatography of the 3-methyl-1-phenyl-5- pyrazolone derivatives of the oligosaccharides. The milk was collected at 4, 10, 30 and 100 days postpartum. The concentrations of all six oligosaccharides decreased during the course of lactation. The concentrations of 6'-sialyllactose, sialyllacto-N-tetraose b and disialyllacto-N-tetraose decreased only after 10 days postpartum, whereas those of sialyllacto-N-tetraose a and sialyllacto-N-neotetraose c as well as 3'-sialyllactose decreased from 4 days postpartum. Large differences were observed between present data and those previously reported for Italian... |
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Palavras-chave: Human milk; Sialyl oligosaccharide; Lactation period; PMP; Reverse phase HPLC. |
| Ano: 2003 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3287 |
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| Urashima, Tadasu; Nakamura, Tadashi; Ikeda, Akiko; Asakuma, Sadaki; Arai, Ikichi; Saito, Tadao; Oftedal, Olav T.; 浦島, 匡; 中村, 正. |
| Carbohydrates were extracted from a sample of milk from a mink, Mustela vison (Family Mustelidae). Free neutral and acidic oligosaccharides were isolated from the carbohydrate fraction and their chemical structures were compared with those of white-nosed coati (Nasua narica, Procyonidae) and harbour seal (Phoca vitulina, Phocidae) that we had studied previously. The ratio of free lactose to milk oligosaccharides was similar to that in milk of the white-nosed coati; in both species, this ratio was much lower than that in the milk of most eutherians. The neutral oligosaccharides of mink milk had alpha(1-3)-linked Gal or alpha(1-2)-linked Fuc residues at their non-reducing ends, as in the neutral oligosaccharides of white-nosed coati milk. Some of the neutral... |
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Palavras-chave: Mink; Mustela vison; Mustelidae; Milk oligosaccharides; Neutral oligosaccharides; Sialyl oligosaccharides. |
| Ano: 2005 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/729 |
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| Fukuda, Kenji; Shi, Tala; Nagami, Kentaro; Leo, Fiame; Nakamura, Tadashi; Yasuda, Kumi; Senda, Akitsugu; Motoshima, Hidemasa; Urashima, Tadasu; 福田, 健二; 浦島, 匡. |
| A thermophilic lactic acid bacterium, Lactobacillus fermentum TDS030603, produced about 100 mg/L of EPS in purified form when grew in de Man-Rogosa-Sharpe (MRS) broth. The 1% (w/v) solution of the purified EPS was highly viscous, exhibiting an apparent 22 viscosity (ηapp) of 0.88 Pa s at a shear rate of 10/s. To investigate the impact of carbohydrate source on the production yield and chemical structure of EPS and the viscosity of EPS solution, a chemically defined medium (CDM) has been developed. Results of TLC, HPLC, 25 and 1H NMR spectroscopy indicated that the chemical structures of EPS released in MRS and in the CDM supplemented with glucose, galactose, lactose or sucrose were very similar. All the 1% solutions of EPSs released in CDMs were highly... |
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Palavras-chave: Chemical structure; Chemically defined medium; Exopolysaccharide; Lactic acid bacteria; Viscosity. |
| Ano: 2010 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2694 |
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| 浦島, 匡; 上村, 祐介; 中村, 正; 佐々木, 基樹; Urashima, Tadasu; Uemura, Yuhsuke; Nakamura, Tadashi; Sasaki, Motoki. |
| ペンシルバニア紀(>3億1000万年前)に，有羊膜類であるSynapsidは他の系統から分化し，腺を発達させた。乳腺は毛包と会合した祖先型アポクリン腺から発達した。乳腺と毛の関係は単孔類の乳腺に保持されている。また，有袋類における乳腺毛の初期個体発生時の存在とその後の退化に，その証拠が残されている。単孔類の乳頭のない乳腺区分にあるmammo-ピロ-脂腺単位の密集した集団は，透水性を示す卵への水分や他の成分の補給のための構造的進化を反映しているかもしれない。ラクトースなどの成分は，初期Synapsidの祖先アポクリン腺から分泌されていたかもしれない。三畳紀のTherapsidは，複雑な栄養成分を含む乳を分泌し，卵サイズを小さくし，孵化時の新生子の未熟化を引き起こした。乳腺区分に生じた乳頭は，乳腺の毛を退化させた。 乳腺分泌は，羊皮状の卵殻をもつ卵を産むSynapsidで開始されたと考えられる。羊皮状の卵殻をもつ卵は，低湿度の空気にふれた際，急速に水分損失を被る。Synapsidは抱卵嚢の中で抱卵することで卵の乾燥を防いだが，これは母親の行動を制限した。羊皮状の卵殻をもつ卵は，殻を通して液体水分を補給することができる。乳腺分泌は，本来卵に水分を供給する手段として開始され，Cynodont (キノドン類)において内温性獲得の要因となった。Synapsidの卵は，ナトリウムやカルシウムイオンなどの栄養素を摂取した可能性がある。孔のある卵殻と2層性の卵黄膜は，子宮内での分泌物と抱卵時での乳腺分泌物の摂取を促進したと考えられる。 |
| Ano: 2004 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2924 |
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| 荒井, 威吉; 中島, 景典; 丸山, 千弘玲; 中村, 正; 戸羽, 隆宏; 浦島, 匡; Arai, Ikichi; Nakajima, Keisuke; Maruyama, Chigure; Nakamura, Tadashi; Toba, Takahiro; Urashima, Tadasu. |
| Microflora of lactic acid bacteria and yeasts of Laban which had been made with bovine or ovine milk by traditional natural fermentation in Yemen，were studied. The mean of viable cell counts of microorganisms in Laban was 6.4 x10⁸ cfu/ml. The 60 strains of lactic acid bacteria and 24 strains of yeasts were isolated and identified. The percentages of strains on lactic acid bacteria flora were as follows: Lactococcus lactis subsp.lactis① was dominant in 88%. Lc. lactis subsp. lactis②，Leuconostoc mesenteroides subsp. mesenteroides，and Leuc. lactis were in 5，5，and 2%，respectively. It was recognized that the some characteristics of Lc. lactis subsp. lactis① of the dominant strain were different from those of Lc. lactis subsp.lactis②. The percentages of strains... |
| Ano: 2002 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2923 |
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| Sugai, Michiko; Takakuwa, N; Ohnishi, Masao; Arai, Ikichi; Urashima, Tadasu; Oda, Yuji. |
| From 2150 isolates from raw milk and milk products, yeast strains were surveyed to produce glucosylceramide from cheese whey. Most of the 54 strains that had accumulated a detectable amount of glucosylceramide were identified as Kluyveromyces lactis var. lactis. The cells of K. lactis var. lactis strain M-11 derived from domestic raw milk accumulated glucosylceramide 2.5-fold higher than K. lactis var. lactis NBRC 1267, the reference strain selected from the culture collections. Strain M-16 of K. lactis var. lactis derived from the same origin was found to synthesize a considerable amount of steryl glucoside in addition to glucosylceramide. Sequence analysis of ribosomal DNA intergenic spacer two regions revealed that strains M-11 and M-16 were diverged... |
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Palavras-chave: Glucosylceramide; Steryl glucoside; Cheese whey; Kluyveromyces lactis var; Lactis. |
| Ano: 2007 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1055 |
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| Registros recuperados: 23 | |
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