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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of food science & technology 18 (1983), S. 0 
    ISSN: 1365-2621
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: A thermal process schedule for guava canned in syrup has been evolved on the basis of inactivation of pectinesterase (PE) which was found to be more heat resistant than peroxidase. The values for thermal inactivation and thermal resistance of PE in syrup homogenate containing guava pulp and sugar syrup in the ratio of 11:6 and total soluble solids content of 20% at pH 4.0 were 〈inlineGraphic alt="inline image" href="urn:x-wiley:09505423:IJFS301:IJFS_301_mu1" location="equation/IJFS_301_mu1.gif" extraInfo="missing"/〉 respectively. The F value of 1 was equivalent to 1.69 D. In commercial canning, a 2.5 D process is recommended which ensures a microbiologically safe and organoleptically acceptable product.Process time was calculated both by graphical and formula methods. Calculation by the formula method using slopes of heating and cooling curves plotted on semilog paper by least squares analysis, and fh/U:g tables for actual values of jc gave process times very close to those obtained by the graphical method. The process times required at different initial and processing temperatures are given.To minimize viscosity increase in the covering syrup during storage, firming of guava in 1% calcium chloride solutions for 30 min prior to canning is suggested. In addition, use of covering syrup containing 0.125% ascorbic acid with or without citric acid (0.06%) yields a product of good colour, texture and flavour.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of food science & technology 18 (1983), S. 0 
    ISSN: 1365-2621
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: In the in-can processing of canned fruit pulp in batches, the pulp is filled hot into cans, sealed, processed and cooled. The hold-up time between sealing ad processing may vary from 10 to 30 rnin when the temperature of pulp decreases in the peripheral regions. During processing and cooling, temperature changes in the peripheral regions are rapid but not so in regions near geometric centre. In guava pulp filled into cans at 170F (76.9°C) or above, thc desired F value is achieved at the geometric centre even without processing but not so at other regions. The point of minimum lethality shifts from the geometric centre towards the periphery with an increase in the filling temperature and a decrease in the hold-up time. Based on these findings, a thermal process schedule has been evolved for canned guava pulp with different filling temperatures and a holdup time of 10 and 30 min.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 20 (1981), S. 479-483 
    ISSN: 1432-1041
    Keywords: chloramphenicol ; liver disease ; pharmacokinetics ; intravenous administration ; serum albumin ; prothrombin time index
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The pharmacokinetics of intravenous chloramphenicol has been studied in 42 patients with liver disease and in 8 controls. The half-life of chloramphenicol (t1/2) was increased in the various liver disorders, the metabolic clearance rate (MCR) and apparent volume of distribution (Vd) were decreased and the area under the time — concentration curve (AUC) showed an increase. The t1/2 of chloramphenicol showed a significant correlation with serum albumin and prothrombin time index.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 258 (1980), S. 944-948 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary The kinetics of oxidation of 2-methoxyethanol and 2ethoxyethanol by vanadium (V) in aqueous sulphuric acid medium has been studied. The order of reaction with respect to the oxidant and substrate has been found to.be unity. The energy of activation has also been calculated graphically. A probable mechanism has been proposed.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 10 (1981), S. 128-130 
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Absolute values of K X-ray fluorescence (XRF) cross-sections have been calculated for elements 11 ≤ Z ≤ 69 at three excitation energies corresponding to Mn, Ag and Te K X-rays from 55Fe, 109Cd and 125I radioisotopes respectively and the fourth energy corresponding to the 59.60 keV γ-ray from 241Am. Measurements were also made for these cross-sections for ten elements with 18 ≤ Z ≤ 48 at two excitation energies from 109Cd and 125I radioisotopes. The measured values are compared with those obtained from theoretical considerations and a good agreement is found.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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