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  • Biochemistry and Biotechnology  (39)
  • Wiley-Blackwell  (39)
  • American Physical Society (APS)
  • International Union of Crystallography (IUCr)
  • 1955-1959  (39)
Sammlung
Schlagwörter
Verlag/Herausgeber
  • Wiley-Blackwell  (39)
  • American Physical Society (APS)
  • International Union of Crystallography (IUCr)
Erscheinungszeitraum
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    Composition of a domestic sewage (1959)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Biochemical and Microbiological Technology and Engineering 1 (1959), S. 143-162 
    Details
    ISSN: 0368-1467
    Schlagwort(e): Chemistry ; Biochemistry and Biotechnology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: An analysis of the organic constituents of whole, domestic sewage was made by analysing four physically separated fractions. Settlement, centrifuging and filtration were used to obtain one liquid and three solid fractions. Concentration of the filtrate was achieved by freeze-drying with only minor changes in composition. The average concentration of organic carbon in fresh, whole domestic sewage was 310 p.p.m., of which about 70 per cent was in suspension. Eight classes of compounds were found, on analysis, to comprise about 75 per cent of the organic carbon in whole sewage and of the soluble organic carbon 80 per cent was distributed between five groups. Using chromatographic methods the concentrations of four volatile acids were determined and the presence of other acids was detected. Similarly, seven of the soluble sugars and eight present in hydrolysed suspended solids have been identified. The probable nature of some of the compounds unaccounted for is discussed.
    Zusätzliches Material: 8 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jbmte.390010203
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  • 2
    Digitale Medien
    Digitale Medien
    Agitation effects in yeast propagation (1959)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Biochemical and Microbiological Technology and Engineering 1 (1959), S. 163-172 
    Details
    ISSN: 0368-1467
    Schlagwort(e): Chemistry ; Biochemistry and Biotechnology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The influence of mechanical agitation in aerobic fermentations is felt mainly through increased aeration efficiency. For yeast propagations in which oxygen supply is abundant - and presumably not limiting to growth - a specific, but limited, effect of fluid agitation on growth rate has been demonstrated. The improved growth rate is attributed primarily to better mixing of the entire fluid mixture rather than to improved cell-fluid mass transfer.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jbmte.390010204
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  • 3
    Digitale Medien
    Digitale Medien
    Microbiological evaluation of peptonesPaper Presented by Saeed Kheshgi before the Fermentation Subdivision on September 11, 1957, at 132nd meeting of the American Chemical Society, held in New York City (1959)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Biochemical and Microbiological Technology and Engineering 1 (1959), S. 115-127 
    Details
    ISSN: 0368-1467
    Schlagwort(e): Chemistry ; Biochemistry and Biotechnology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Information on a reliable method for determining the nutritive value of existing and experimental peptones is lacking in the literature. To overcome this handicap, a method for comparative evaluation of microbiological peptones has been developed.The method is based on measuring the growth of eight carefully selected, fastidious, test cultures. The cultures are grown in presence and absence of yeast extract in an inorganic basal medium containing test peptone and a low and high level of glucose.Statistical analysis of replicate peptone evaluations of six peptones, conducted over a period of six months, shows that 95 per cent confidence limits for this method are ± 2·5 to 7·9 per cent of the mean.Four criteria are employed for determining the overall performance of 12 widely used, commercial peptones.The method is very sensitive for detecting differences between batches of commercial peptones. With the aid of this method a new peptone ‘N-Z-Amine YT’ has been developed. Considering performance and relative cost, this peptone is the most economical of the peptones evaluated.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jbmte.390010110
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  • 4
    Digitale Medien
    Digitale Medien
    Problems in large-scale culture of H. pertussisThe research reported here has been made possible through the support and sponsorship of the U.S. Department of the Army, through its European Research Office. (1959)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Biochemical and Microbiological Technology and Engineering 1 (1959), S. 173-184 
    Details
    ISSN: 0368-1467
    Schlagwort(e): Chemistry ; Biochemistry and Biotechnology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: A study of factors affecting the reproducibility and yields in cultivations of H. pertussis (the whooping cough organism). The search for suitable media led to the development of a new kind of blood medium suitable for pre-cultures. Sterility of the blood additive could be ensured by filtration, and contamination on starting the freeze-dried cells was avoided by the use of a special kind of ampoule.In the course of studies of different cultivation techniques a 6,000 ml ‘pulsaerator’ was found to be ideal for the preparation of ordinary small batches. Inoculation density, aeration and other factors affecting the yield were studied and a culture cycle suitable for preparing 500 l. batches was developed.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jbmte.390010205
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  • 5
    Digitale Medien
    Digitale Medien
    The theory of scaling up laboratory data for the sedimentation type centrifuge (1959)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Biochemical and Microbiological Technology and Engineering 1 (1959), S. 185-205 
    Details
    ISSN: 0368-1467
    Schlagwort(e): Chemistry ; Biochemistry and Biotechnology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The mathematical theory of the sedimentation type of centrifuge is developed in terms of unhindered settling of a single particle that has reached equilibrium velocity. From this is derived the sigma value for several of the different forms of sedimentation type centrifuge which is the calculated equivalent area of a settling tank theoretically capable of doing the same amount of work in a unit gravitational field. The limitations controlling the accuracy of scale up between centrifuges of similar geometry and between centrifuges of substantially different geometry are discussed.
    Zusätzliches Material: 8 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jbmte.390010206
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  • 6
    Digitale Medien
    Digitale Medien
    Cholesterol by David Kritchevsky. John Wiley & Sons Inc., 1959, xi + 291 pp. 78/- (1959)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Biochemical and Microbiological Technology and Engineering 1 (1959), S. 243-243 
    Details
    ISSN: 0368-1467
    Schlagwort(e): Chemistry ; Biochemistry and Biotechnology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jbmte.390010211
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  • 7
    Digitale Medien
    Digitale Medien
    Batch centrifuge scale-up for virus processing (1959)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Biochemical and Microbiological Technology and Engineering 1 (1959), S. 207-215 
    Details
    ISSN: 0368-1467
    Schlagwort(e): Chemistry ; Biochemistry and Biotechnology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The mathematical relationship between the throughput of a batch centrifuge and its mechanical characteristics has been applied to the scale-up of one of the steps in virus processing for possible application to the production of vaccines and similar antigens. Slurries that contained a test virus were purified in a laboratory centrifuge. The Q/Σ relationship, developed by Ambler, was used to predict the operating conditions of a larger centrifuge in order to achieve the same clarification of slurry as that produced in the laboratory centrifuge. A correlation between conditions of centrifugation and amount of virus removed from the feed to the centrifuge shows that there is a well-defined Q/Σ value at which significant concentrations of the test virus are sedimented.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jbmte.390010207
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  • 8
    Digitale Medien
    Digitale Medien
    The interaction of unsaturated and saturated steroids in the production of Δ1,4-androstadienedione with Fusarium caucasicum (1959)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Biochemical and Microbiological Technology and Engineering 1 (1959), S. 239-242 
    Details
    ISSN: 0368-1467
    Schlagwort(e): Chemistry ; Biochemistry and Biotechnology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jbmte.390010210
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  • 9
    Digitale Medien
    Digitale Medien
    An automatic apparatus for extraction of cell suspensions by repeated freezing and thawing (1959)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Biochemical and Microbiological Technology and Engineering 1 (1959), S. 229-238 
    Details
    ISSN: 0368-1467
    Schlagwort(e): Chemistry ; Biochemistry and Biotechnology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: An account is given of the construction and operation of a fully automatic apparatus in which the material is kept under agitation in a closed container alternately surrounded by hot and cold alcohol supplied from separate baths. The apparatus has the following applications in microbiology and cell physiology: (1)Extraction of micro-organisms and cell tissues by repeated freezing (F) and thawing (T) at variable temperatures and lengths of FT cycle. Extraction can be controlled automatically or manually. As a practical example of the use of the apparatus a description is given of the extraction of living virulent S. typhi bacteria.(2)Studies of the reactions of living micro-organisms and tissues under varying physical conditions (e.g. high- and low-temperature resistance experiments, osmotic studies, thermal synchronization of bacterial cultures, etc.).(3)If required, the normal gas mixture in the residual air space can without difficulty be replaced by other gases or mixtures such as CO2 or N2.
    Zusätzliches Material: 7 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jbmte.390010209
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  • 10
    Digitale Medien
    Digitale Medien
    The evaluation of a process for the preparation of co-enzyme A from yeast (1959)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Biochemical and Microbiological Technology and Engineering 1 (1959), S. 217-228 
    Details
    ISSN: 0368-1467
    Schlagwort(e): Chemistry ; Biochemistry and Biotechnology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: A process is described for the extraction of co-enzyme A from dried yeast. It involves cold water extraction, charcoal adsorption followed by pyridine elution, preparation of an acetone power, co-precipitation as the double cuprous complex with glutathione and removal of the glutathione by means of an ion exchange resin.Improvements over previous processes include use of drum dried yeast plus cold extraction resulting in easy filtration and increase of throughput by a factor of three to five, together with the elimination of the ion exchange step formerly thought necessary to remove zine before the co-precipitation stage. Under the best conditions yields represent 30% recovery of the co-enzyme A in the yeast, the product being 90% pure.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jbmte.390010208
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