The Polysacgharides of Cryptococcus Laurentii (Y1401): Part Ii. Biosynthesis of the Carbohydrates Found in the Acidic Polysaccharide

Abercrombie, M. J.; Jones, J. K. N.; Perry, Malcolm B.

doi:10.1139/v60-270

Cited by 11 publications

(1 citation statement)

References 8 publications

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“…METABOLISM OF POLYSACCHARIDES 423 described in Section III, A. In the yeast Cryptococcus laurentii also, radioactivity from hexoses was incorporated into a mannose-xylose-glucuronic acid polymer without carbon rearrangement (382), in a manner similar to incorporation of hexoses into plant polysaccharides (see Section IV, D, 1). Earlier experiments with hyaluronic acid-forming bacteria indicated that glucose was incorporated into the glucuronic acid and 7V-acetyl glucos amine moieties of hyaluronic acid without rearrangement of the carbon chain (376)(377)(378)(379)(380)(381).…”

Section: Synthesis and Turnovermentioning

confidence: 99%

Metabolism of Polysaccharides Containing Glucuronic Acid

Silbert¹

1966

Glucuronic Acid Free and Combined

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Section: Synthesis and Turnovermentioning

confidence: 99%

Metabolism of Polysaccharides Containing Glucuronic Acid

Silbert¹

1966

Glucuronic Acid Free and Combined

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Extracellular polysaccharide produced from glucose by cryptococcus laurentii var. flavescens NRRL Y‐1401: Chemical and physical characterization

Jeanes

Pittsley

Watson

1964

J of Applied Polymer Sci

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SynopsisThe polysaccharide that occurs freely dispersed in culture fluids in which the nonpathogen, Cryptococcus laurentii var. Jlavescens NItRL Y-1401, has been grown on the carbohydrate substrate, glucose, has been isolated, purified, and characterized. This macromolecular polysaccharide is coniposed of D-mannose, D-xylose, and D-glucuronic acid (as the potassium salt) and a small proportion of 0-acetyl groups. Factors favorable to practical application of this hydrocolloid are its adaptability to large-scale production, its stability in storage, and the properties of its homogeneous dispersions. Dispersions in water or aqueous alcohol are highly viscous and tend to soft gelation. Dispersions in water show plastic rheological characteristics and thixotropy with rapid regain of viscosity after shear. Moderate decreases in viscosity result from the presence of electrolytes or from heating, and only small differences in viscosity occur in the pH range 4-11. Indications have been presented that variation in properties of the polysaccharide product may depend upon fermentation conditions.

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Mannose‐containing polysaccharides of yeasts

Spencer

Gorin

1973

Biotech & Bioengineering

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SummaryThe known species of yeasts produce at least 180 different polysaccharides having mannose as a major constituent. The type of mannan formed is characteristic of the yeast species, and can be used as an aid in identification and classification. The immunological characteristi-of yeasts depend largely upon the nature of the mannans. Some of the yeast mannans can be produced in relatively high yields, and have been suggested as replacements for plant and bacterial gums as thickeners, dispersing agents, and similar applications. However, more significant uses, based on the finer differences in their chemical structures and the specific reactions they undergo, may result from a closer study of these polymers. HISTORYMannans, phosphonomannans, and heteropolymers containing mannose and other sugars are components of the cell wall of many yeast species, and sometimes are formed as a capsule or as extracellular polysaccharide in the culture medium.' The mannan of bakers' yeast, known as "yeast gum," has been known since 1894, and was studied in the 1 9 3 0 '~.~ Most early studies were with bakers' yeast mannan, and several possible structures have been proposed with the aid of later evidence.2 It is now evident, however, that the formation of mannose-containing polysaccharides is characteristic of nearly all yeast species.' Serological and chemical studies have demonstrated that there are considerable differences in the structures of these polysaccharides. In 1960 it was discovered that phosphonomannans were formed by yeasts, often in yields which were sufficiently

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The Polysacgharides of Cryptococcus Laurentii (Y1401): Part Ii. Biosynthesis of the Carbohydrates Found in the Acidic Polysaccharide

Cited by 11 publications

References 8 publications

Metabolism of Polysaccharides Containing Glucuronic Acid

Metabolism of Polysaccharides Containing Glucuronic Acid

Extracellular polysaccharide produced from glucose by cryptococcus laurentii var. flavescens NRRL Y‐1401: Chemical and physical characterization

Mannose‐containing polysaccharides of yeasts

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