Molds, Yeasts, and Actinomycetes

Skinner, Charles E.; Emmons, C. W.; Tsuchiya, H. M.

doi:10.1097/00010694-194705000-00014

Cited by 32 publications

(7 citation statements)

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“…Future studies in this area might serve to identify the common constituent(s) within these structures responisible for lanthanum nitrate affinitv, and possibly its physiological role in the dormant spore. The present investigation clearly establishes the formation of the cell wall directly from the inner spore coat in S. cerevisiae which supports the contention of Skinner et at. (1951) that in some yeast the inner ascospore wall serves as the cell wall of the new vegetative cell.…”

Section: Aw~~~~~~~asupporting

confidence: 92%

Fine Structure of Microorganisms

1958

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Section: Aw~~~~~~~asupporting

confidence: 92%

Fine Structure of Microorganisms

1958

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“…on a potential foodstuff is put to good use. These organisms are commonly used to produce wines fermented from rice in the Orient and ethyl alcohol in Europe (203). Strains have been domesticated to produce sufu and tempeh (fermented soybean food products), alphaamylase, fusidic acid, and the proteolytic enzyme rennin, used in cheesemaking (6,94,97,235).…”

Section: Introduction To Mucor Sppmentioning

confidence: 99%

Mucor dimorphism.

Orlowski¹

1991

Microbiological Reviews

115

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“…15.7 37.1 34.9 33. 8 or C. arborea. Asparagine and Bacto-peptone showed a marked stimulating effect on lipid synthesis with both yeasts.…”

Section: Resultsmentioning

confidence: 99%

“…These and other yeasts have been used in Germany f o r the production of fodder yeast.!' Strictly speaking, as clearly established by Skinner, Emmons, and Tsuchiya (8) members of the genus Candida are yeast-like fungi rather than typical yeasts, since they form a true mycelium under certain conditions. Also, the generic name Torula is not valid; instead, Cryptococcus is the correct name in accordance with the International Code of Nomenclature.…”

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confidence: 94%

Influence of Carbohydrate and Nitrogen Sources Upon Lipid Production by Certain Yeasts

Husain

Hardin

1952

Journal of Food Science

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The origin and fate of fatty material in microorganisms has been a subject of investigation for many years. Numerous microorganisms have been shown to accumulate lipid from non-lipid materials in varying degrees. Of special interest are certain lipid producing yeasts, which have been studied from the viewpoint of large scale production of lipids. Aside from Endomyces vernalis, which has been most widely used in the past, good lipid yields from several other types of yeasts have been reported. Rippel (7) reported on the lipid contents of Torulopsis pulcherima, an unidentified strain of red yeast, and Nectaromyces reukaufi. He found Nectaromyces reukaufi to be the most promising as it produced 15 g. of lipid from 100 g. of sugar in 23 days. Nilsson, Enebo, Lundin, and Myrback ( 5 ) reported that of several yeasts tested Rhodotorula glutinis gave the highest lipid yield. When grown in submerged cultures, it produced 14.1% lipid within 2-3 days. Kleinzeller (2) obtained lipid yields from 18.6% to 43% on a dry basis with l'orulopsis lipofera, a soil yeast. This yeast grew well and readily converted carbohydrate to lipid on a medium containing 0.05% yeast extract, glucose, ammonia, and mineral salts. A molasses medium containing potassium, magnesium? and manganese salts, adjusted to a pH of 5.5-6.0, was also favorable for growth and lipid production. The optimum temperature was 20"-25"C. Starkey (9) isolated from soil a yeast which produced lipid yields of 48 to 65%. Recently much attention has been given to Rhodotorula gracilis as a high lipid producer, as indicated in the excellent review on fat synthesis by microorganisms, published by Lundin (3).The present investigation was undertaken in the light of the fact that, although reports concerning different physical and chemical factors that influence lipid synthesis by yeasts have appeared from time to time, information on the role of specific carbohydrates and sources of nitrogen on the overall yield of lipids per cell is still of fragmentary nature. A study of the effects of various carbohydrates and nitrogenous substances on the cell yields and on the lipid yields of a few selected strains of yeasts was undertaken in view of the lack of systematic studies in this field. EXPERIMENTAL PROCEDURECultures. One culture each of Candida arborea, Toruln utzlis, and Rhodotorula ,qraczlis has been used. The culture of Rhodotorula gracilis was obtained through the courtesy of Dr. S. C. Pan, of the Research Laboratories, Joseph E. Seagram and Sons, Inc., Louisville, Ky. The other two yeasts were obtained from the U. S. Forest Prod-' Present address :

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Molds, Yeasts, and Actinomycetes

Cited by 32 publications

References 0 publications

Fine Structure of Microorganisms

Fine Structure of Microorganisms

Mucor dimorphism.

Influence of Carbohydrate and Nitrogen Sources Upon Lipid Production by Certain Yeasts

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