Research Bulletin Volume 44-60

Research Bulletin Volume 44-60

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1918 edition. Excerpt: by Hunziker9 has not been described in the literature, while Rogers and Clemmer in their investigation found an organism of the aerogenes type responsible for the blowing. Spores were never observed with the budding organism isolated from sweetened condensed milk but no effort was made to stimulate spore production. The formation of spores was not studied because the usefulness of attempting to employ sporulation in a diagnostic way with yeasts is in doubt. Hunter," in considering this question, points out that observations of different investigators on sporulation for the same yeast do not agree and also that Hansen states that the T orula may be only a temporary stage of development of yeasts and has demonstrated that spore production is not-a stable factor for he has been able to produce an asporogenic race of Saccharomyces by varying the conditions of cultivation. The uncertainty of the technique used in determining whether or not sporulation occurs is another objection that decidedly limits the value of spore formation as a means of classification. 'Letter from Prof. Hunziker. 10Hunter, 0. W. A Lactose Fermenting Yeast Producing Foamy Cream. Jour. Bact. 3, 293. 1918. It seems best, because of the importance of blowing in sweetened condensed milk, to suggest a name for the budding organism isolated and Torula lactis-condcnsi is accordingly proposed; the generic name Torula is used tentatively and with the idea that a satisfactory classification of the budding organisms will probably result in a change. It is to be expected that the yeasts causing blowing in sweetened condensed milk are not all alike because organisms growing in strong sugar solutions are quite common and these are certainly not all the same type, but more

Product details

  • Paperback | 130 pages
  • 189 x 246 x 7mm | 245g
  • United States
  • English
  • black & white illustrations
  • 1236838424
  • 9781236838421