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Curdlan is a water-insoluble linear beta-1,3-glucan, a high-molecular-weight polymer of glucose. Curdlan consists of β-(1,3)-linked glucose residues and forms elastic gels upon heating in aqueous suspension. It was reported to be produced by Alcaligenes faecalis var. myxogenes. Subsequently, the taxonomy of this non-pathogenic curdlan-producing bacterium has been reclassified as Agrobacterium species.

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rdf:type
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  • Kurdlan (cs)
  • Curdlan (de)
  • Curdlan (en)
  • Curdlano (it)
  • Curdlane (fr)
  • カードラン (ja)
  • Curdlana (pt)
  • 热凝胶多糖 (zh)
rdfs:comment
  • Kurdlan (β-1,3-glukan) je polysacharid s vysokou molekulovou hmotností, derivát glukózy. Vyrábí se bakteriální fermentací, například pomocí nepatogenních bakterií Agrobacterium biobar, zkoumá se i možnost jeho získávání pomocí Alcaligenes faecalis. Používá se jako přídavná látka do potravin pod názvem E 424, v EU není povolen. (cs)
  • カードラン(curdlan)は、Agrobacteriumやなどの細菌が発酵により培地中に生産する多糖で、1966年に大阪大学産業科学研究所の教授により発見され、加熱すると固まる性質(curdle)からカードランと命名された。ほぼ純粋な直鎖のβ1,3-グルカンである。CAS登録番号は[54724-00-4]。 アルカリに可溶、過熱すると熱硬化性のゲルを作る、保水性に優れる、などの特徴を持つ。2001年にゲル化剤、安定化剤、増粘剤として食品添加物に認可され、中華麺、食肉加工品、練り製品、たれなどに添加されている。また、整髪料にも添加されている。 (ja)
  • Goma curdlana é uma goma produzida pelas espécies de , sendo sua composição D-Glucose juntas na ligação 1,3. É usada como espessante de alimentos e também como estabilizante. (pt)
  • 热凝胶多糖,又名可得然胶、卡德蘭,是一种β-1,3-葡聚醣,是由葡萄糖組合而成的高分子聚合物。它包含了β-(1,3)-葡萄糖的殘餘物,並可經於其所構成的似水懸浮液中加熱,形成具有彈性的膠狀物質,稱為卡德蘭膠。 它是經由非病原細菌 Agrobacterium biobar 1(菌種發現時經鑒定為 Alcaligenes faecalis var. myxogenes)所生產出的。 热凝胶多糖是歐盟認可的食品添加物之一,E编码為E424,有些魚漿製品為改善食物的粘性和Q度,會加入热凝胶多糖。 (zh)
  • Curdlan is a water-insoluble linear beta-1,3-glucan, a high-molecular-weight polymer of glucose. Curdlan consists of β-(1,3)-linked glucose residues and forms elastic gels upon heating in aqueous suspension. It was reported to be produced by Alcaligenes faecalis var. myxogenes. Subsequently, the taxonomy of this non-pathogenic curdlan-producing bacterium has been reclassified as Agrobacterium species. (en)
  • Le curdlane (ou β-1,3-glucane) est un polysaccharide (polymère constitué d'oses) formé de 400 à 500 résidus de D-glucose unis par des liaisons osidiques β(1→3). Il s'agit d'un polymère linéaire, non ramifié. Ce polysaccharide est produit par des bactéries du genre Alcaligenes comme Alcaligenes faecalis var.myxogenes (aujourd'hui identifiée comme Agrobacterium biovar 1) ; il a été découvert en 1966 par T. Harada qui lui a donné le nom de curdlane à cause de sa capacité à se gélifier (curdle en anglais). (fr)
  • Il curdlano è un β-glucano formato da unità monomeriche di glucosio legate fra loro tramite legame β-1,3 con formazione di una catena lineare. Viene ricavato commercialmente dal batterio Agrobacterium biovar e trova applicazione come agente gelificante. È un additivo alimentare noto con la sigla E424. È stato riscontrato, da studi genetici condotti su Agrobacterium, che in carenza di azoto un operone (crdASC) agisce aumentando la sintesi del polisaccaride. (it)
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  • Kurdlan (β-1,3-glukan) je polysacharid s vysokou molekulovou hmotností, derivát glukózy. Vyrábí se bakteriální fermentací, například pomocí nepatogenních bakterií Agrobacterium biobar, zkoumá se i možnost jeho získávání pomocí Alcaligenes faecalis. Používá se jako přídavná látka do potravin pod názvem E 424, v EU není povolen. (cs)
  • Curdlan is a water-insoluble linear beta-1,3-glucan, a high-molecular-weight polymer of glucose. Curdlan consists of β-(1,3)-linked glucose residues and forms elastic gels upon heating in aqueous suspension. It was reported to be produced by Alcaligenes faecalis var. myxogenes. Subsequently, the taxonomy of this non-pathogenic curdlan-producing bacterium has been reclassified as Agrobacterium species. Extracellular and capsular polysaccharides are produced by a variety of pathogenic and soil-dwelling bacteria. Curdlan is a neutral β-(1,3)-glucan, perhaps with a few intra- or interchain 1,6-linkages, produced as an exopolysaccharide by soil bacteria of the family Rhizobiaceae. Four genes required for curdlan production have been identified in Agrobacterium sp. ATCC31749, which produces curdlan in extraordinary amounts, and Agrobacterium tumefaciens. A putative operon contains crdS (Q9X2V0, family GT2, Pfam PF13632), encoding β-(1,3)-glucan synthase catalytic subunit, flanked by two additional genes. A separate locus contains a putative regulatory gene, crdR. A membrane-bound phosphatidylserine synthase, encoded by pssAG, is also necessary for maximal production of curdlan of high molecular mass. Nitrogen starvation upregulates the curdlan operon and increases the rate of curdlan synthesis. Curdlan has numerous applications as a gelling agent in the food, construction, and pharmaceutical industries and has been approved as a food additive by the U. S. Food and Drug Administration. Its use is being evaluated in fat replacement studies in foodstuffs such as sausages, meat patties and other meat products (en)
  • Le curdlane (ou β-1,3-glucane) est un polysaccharide (polymère constitué d'oses) formé de 400 à 500 résidus de D-glucose unis par des liaisons osidiques β(1→3). Il s'agit d'un polymère linéaire, non ramifié. Ce polysaccharide est produit par des bactéries du genre Alcaligenes comme Alcaligenes faecalis var.myxogenes (aujourd'hui identifiée comme Agrobacterium biovar 1) ; il a été découvert en 1966 par T. Harada qui lui a donné le nom de curdlane à cause de sa capacité à se gélifier (curdle en anglais). Le curdlane est insoluble dans l’eau, l’alcool et la majorité des solvants organiques. Cependant, il se dissout dans les solutions d'alcalis tel que l’hydroxyde de sodium. Il est utilisé en tant qu'additif alimentaire (épaississant et stabilisant) (E424). Son numéro CAS est le 54724-00-4 et sa formule brute (C6H10O5)n. (fr)
  • カードラン(curdlan)は、Agrobacteriumやなどの細菌が発酵により培地中に生産する多糖で、1966年に大阪大学産業科学研究所の教授により発見され、加熱すると固まる性質(curdle)からカードランと命名された。ほぼ純粋な直鎖のβ1,3-グルカンである。CAS登録番号は[54724-00-4]。 アルカリに可溶、過熱すると熱硬化性のゲルを作る、保水性に優れる、などの特徴を持つ。2001年にゲル化剤、安定化剤、増粘剤として食品添加物に認可され、中華麺、食肉加工品、練り製品、たれなどに添加されている。また、整髪料にも添加されている。 (ja)
  • Il curdlano è un β-glucano formato da unità monomeriche di glucosio legate fra loro tramite legame β-1,3 con formazione di una catena lineare. Viene ricavato commercialmente dal batterio Agrobacterium biovar e trova applicazione come agente gelificante. È un additivo alimentare noto con la sigla E424. A seconda delle condizioni operative utilizzate, il curdlano è in grado di formare gel sia termoreversibili sia termicamente irreversibili: riscaldando una soluzione di curdlano fino a circa 65 °C, per successivo raffreddamento si ottiene un gel termoreversibile, mentre a partire da una temperatura di 80 °C si ottiene un gel termicamente irreversibile e più forte. Questo (1→3)-β-D-glucano viene prodotto anche da diversi batteri che colonizzano il suolo, da altri associati alle piante, e da batteri patogeni per l'uomo, costituendo il principale componente dei materiali capsulari. Altri organismi produttori di curdlano sono, ad esempio, appartenenti alla famiglia delle Rhizobiaceae. È stato riscontrato, da studi genetici condotti su Agrobacterium, che in carenza di azoto un operone (crdASC) agisce aumentando la sintesi del polisaccaride. (it)
  • Goma curdlana é uma goma produzida pelas espécies de , sendo sua composição D-Glucose juntas na ligação 1,3. É usada como espessante de alimentos e também como estabilizante. (pt)
  • 热凝胶多糖,又名可得然胶、卡德蘭,是一种β-1,3-葡聚醣,是由葡萄糖組合而成的高分子聚合物。它包含了β-(1,3)-葡萄糖的殘餘物,並可經於其所構成的似水懸浮液中加熱,形成具有彈性的膠狀物質,稱為卡德蘭膠。 它是經由非病原細菌 Agrobacterium biobar 1(菌種發現時經鑒定為 Alcaligenes faecalis var. myxogenes)所生產出的。 热凝胶多糖是歐盟認可的食品添加物之一,E编码為E424,有些魚漿製品為改善食物的粘性和Q度,會加入热凝胶多糖。 (zh)
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