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  • 1990-1994  (3)
  • 1985-1989  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Purification and preliminary characterization of five serine proteinases produced by Brevibacterium linens (1990)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of food science & technology 25 (1990), S. 0 
    Details
    ISSN: 1365-2621
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Five proteinases were purified from culture filtrate of Brevibacterium linens by a series of column chromatography and found to be homogeneous by polyacrylamide gel electrophoresis. All appear to be serine proteinases, being inactivated by phenyl-methylsulphonyl fluoride and not by EDTA or p-chloromercuribenzoic acid. They were all active against casein in alkaline pH (pH optimum of 11.0) and specific activity was within the range 2.66–3.23 units mg−1 protein. Proteinases C, D and E were more stable in higher temperature and acidic pH than proteinases A and B. Molecular weights estimated by gel filtration were 37000, 37000, 44000, 127000 and 325000 for proteinases, A, B, C, D and E, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1990.tb01072.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Stabilization of ascorbic acid by microencapsulation in liposomes (1991)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of food science & technology 26 (1991), S. 0 
    Details
    ISSN: 1365-2621
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Ascorbic acid was encapsulated with high efficiency inside liposomes. In this form, its stability was enhanced compared to that in free aqueous solution, and particularly in the presence of a number of factors widespread in foods, which normally lead to its rapid degradation. Possible mechanisms for these stabilizing effects are discussed. Amongst other potential applications, these findings are relevant to the preservation of nutritional supplements of vitamin C in solution and to the development of naturally derived antioxidant systems for food protection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1991.tb01988.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Accelerated ripening of cheese using liposome-encapsulated enzyme (1987)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of food science & technology 22 (1987), S. 0 
    Details
    ISSN: 1365-2621
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Improved efficiency of liposome encapsulation of a cheese-ripening enzyme and increased retention of encapsulated enzyme by cheese curd are reported. The economy of enzyme usage for accelerating the rate of ripening of Cheddar cheese has been improved about 100-fold over previously reported methods. This has made feasible the use of microencapsulated enzymes for large-scale cheese production. Objective measurement of cheese ripening by proteolytic indices, and subjective evaluation of flavour quality and intensity by trained taste panels, indicate that cheeses are ripened by the microencapsulated enzyme in half the normal time. Investigations aimed at further improving the efficiency and commercial feasibility of the process are reported, and the possibility of using this technology for other aspects of food processing are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1987.tb00499.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Fluctuations in fluids out of thermal equilibrium (1989)
    Springer
    Journal of statistical physics 57 (1989), S. 531-547 
    Details
    ISSN: 1572-9613
    Keywords: Fluctuations ; light scattering ; long-range correlations ; non-equilibrium states ; Rayleigh scattering
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract After a brief review of dynamic correlations in equilibrium fluids, we consider the long-range correlations between the fluctuations in a fluid subjected to a large stationary temperature gradient. These long-range correlations enhance and modify the Rayleigh spectrum of the fluid. We elucidate that the modifications of the Rayleigh line are determined by the coupling of the entropy fluctuations to the transverse velocity fluctuations. Recent attempts to test the theoretical predictions with the aid of light-scattering experiments are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01022821
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    A selection of forest condition indicators for monitoring (1992)
    Springer
    Environmental monitoring and assessment 20 (1992), S. 21-33 
    Details
    ISSN: 1573-2959
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Regional monitoring and assessments of the health of forested ecosystems require indicators of forest conditions and environmental stresses. Indicator selections depend on objectives and the strategy for data collection and analysis. This paper recommends a set of indicators to signal changes in forest ecosystem distribution, productivity, and disturbance. Additional measurements are recommended to help ascribe those changes to climate variation, atmospheric deposition, and land use patterns. The rationale for these indicators is discussed in the context of a sequential monitoring and assessment strategy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00396518
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    Paper (German National Licenses)
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