“…Several detailed reviews are available in the literature relating enzyme activity to water concentration and equilibrium relative humidity (/, [8][9][10]. McLaren (13,14) has suggested a system of kinetics based on the use of mole fractions, rather than moles per unit volume, for low moisture systems, or systems which are "structurally restricted.…”
When water binders (sucrose, glycerol, or propylene glycol) were added to liquid olive oil emulsions at pH 9.0, the activity of hog pancreatic lipase was inhibited. At pH 7.0, however,
“…Several detailed reviews are available in the literature relating enzyme activity to water concentration and equilibrium relative humidity (/, [8][9][10]. McLaren (13,14) has suggested a system of kinetics based on the use of mole fractions, rather than moles per unit volume, for low moisture systems, or systems which are "structurally restricted.…”
When water binders (sucrose, glycerol, or propylene glycol) were added to liquid olive oil emulsions at pH 9.0, the activity of hog pancreatic lipase was inhibited. At pH 7.0, however,
Durch langfristiges Erhitzen zerkleinerter Getreideprodukte verschiedener Feuchtigkeit auf unterschiedliche Temperaturen sind an 4 Enzymen die Grenzwerte für den Beginn einer thermischen Inaktivierung ermittelt worden Dabei ergaben sich lineare Beziehungen zwischen der Inaktivierungs‐Grenztemperatur und dem Wassergehalt des Systems, die enzymcharakteristisch sind und die Thermoresistenz zahlenmäßig widerspiegeln. Im Gegensatz zum Verhalten von Lipase, Acetylesterase und Lipoxydase läßt sich bei Peroxydase unterhalb der Inaktivierungsgrenze eine Hitzeaktivierung feststellen. Von den geprüften Enzymen haben sich Peroxydase und Roggen‐Acetylesterase als hitzestabil erwiesen; Lipase ist etwas, Lipoxydase wesentlich empfindlicher. Zwischen der Acetylesterase von Roggen und Reis sind Unterschiede in der Thermoresistenz beobachtet worden.
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