کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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70205 | 48815 | 2011 | 6 صفحه PDF | دانلود رایگان |
In this work we present a preliminary study directed to the realization of a new pharmaceutical formulation for the treatment of lactose intolerance. The main aim of the work is to increase the stability of β-galactosidase in order to prolong its activity in the course of time, thus improving its performance as dietary supplement in the digestion of lactose.We describe a reliable and effective procedure for the immobilization of β-galactosidase in a three-dimensional silica network. A one-step approach was optimized by using the sol–gel method to obtain homogeneous and stable β-galactosidase/silica gel composites; the textural properties of the porous surface were characterized by N2 physisorption analyses. The activity of β-galactosidase was evaluated in vitro in the hydrolysis of o-nitrophenyl-β-d-galactopyranoside (used instead of lactose) at pH 7.4 and 37 °C, thus reproducing the conditions of the human intestine.
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► A new pharmaceutical formulation for the treatment of lactose intolerance.
► A reliable and reproducible procedure for the immobilization of β-galactosidase.
► A one-pot entrapment of β-galactosidase in a silica network was optimized.
► The entrapment in a silica matrix can prolong the therapeutic action of lactase.
► The sol–gel technique preserves the stability of the enzyme.
Journal: Journal of Molecular Catalysis B: Enzymatic - Volume 71, Issues 1–2, August 2011, Pages 10–15