INFLUENCE OF THE TEMPERATURE AND pH ON THE LEVEL OF THE ACTIVITY OF THE DIGESTIVE ENZYMES OF RUSSIAN STURGEON (ACIPENSER GULDENSTADTII B.)
Journal Title: Вестник Астраханского государственного технического университета. Серия: Рыбное хозяйство - Year 2013, Vol 0, Issue 2
Abstract
The adaptations of the enzymes of intestinal mucous tunic of Russian sturgeon to environmental factors (temperature and pH) are studied. It is shown that the temperature optimum for the alkaline phosphatase is located in the temperature range 60–65 °C, for α-amylase – 30 °C, for maltase – 60 °C, for caseinlytic proteinases – 50 °C. It is stated that the researched enzymes of the Russian sturgeon retain sufficiently high relative activity when uncu-bation temperature is low (0 °C). Maximum activity of the α-amylase and maltase is detected at pH 7–8, for the alkaline phosphatase – at pH 8–9, for caseinlytic proteinases – pH 10. These optimums for pH are typical for the fish of the Volga river basin. The presented data are evidence of identity of reciprocal reaction of the enzymes of mucous tunic of the intestine of Russian sturgeon on the change of incubation temperature and pH with other species of Acipeseridae.
Authors and Affiliations
Bednyakov Andreevich , Nevalennyy Nickolaevich
Keywords
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