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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 43 (1995), S. 902-903 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 32 (1976), S. 1133-1135 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In all earlier studies onα-amylase, the influence of different ions were studied in phosphate buffer. The present report shows the effect of different ions individually withTris and amino acid. Though it has been claimed recently that sodium ion is an activator ofα-amylase, this study reconfirms that sodium ion does not activate human salivary amylase.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Biotechnology letters 14 (1992), S. 679-682 
    ISSN: 1573-6776
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary A novel baker's yeast mediated C−C bond cleavage reaction was observed during the biotransformation of dimethone derivative of thiophene-2-carboxaldehyde (II) to give the product 2-(2′-thienyl methyl)-5,5 dimethyl cyclohexa 1,3-dione (III) in 47% yield.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 271 (1974), S. 208-208 
    ISSN: 1618-2650
    Keywords: Best. von Amylose ; Spektralphotometrie ; zwei Wellenlängen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 283 (1977), S. 195-197 
    ISSN: 1618-2650
    Keywords: Best. von Zucker, reduz., Glucose, Maltose mit 3,5-Dinitrosalicylsäure ; Spektralphotometrie ; Messung bei verschiedenen pH-Werten
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary A Spectrophotometric method of estimation of glucose and maltose using 3,5-dinitrosalicylic acid and measuring the color intensity at two different pH values is described. The concentrations of sugars in unknown solutions are calculated from a linear plot which is obtained when the difference in absorbances at 560 nm for solutions with pH 12.5 and 5.0 (ΔA=A pH12.5−ApH5.0) is drawn against concentrations of sugars (up to 3 mg/ 25 ml). This method eliminates the interference caused by the unreacted reagent present in the conventional method. The present method can be used for the estimation of glucose and maltose upto a concentration of 1.5 mg/ml with an error of ±2.0%.
    Notes: Zusammenfassung Die Bestimmung von Glucose und Maltose wird mit 3,5-Dinitrosalicylsäure durch Messung bei zwei verschiedenen pH-Werten durchgeführt. Eine lineare Eichkurve wird bis 3 mg/25 ml erhalten, wenn man die Extinktionsdifferenz für pH 12,5 und 5,0 bei 560 nm gegen die Konzentration aufträgt. Durch dieses Verfahren wird die bei der konventionellen Methode auftretende Störung durch nicht umgesetztes Reagens ausgeschaltet. Bis zu 1,5 mg/ml der Zucker können mit einem Fehler von ±2% bestimmt werden.
    Type of Medium: Electronic Resource
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