Thixotropic A-Lactalbumin Hydrogels, Method for Preparing Same and Uses Thereof

摘要

The present invention relates to shear-thinning α-lactalbumin hydrogels, which have a threshold and are thixotropic, to a method for preparing same and to the use thereof.

主权项

1. A process of preparing an α-lactalbumin hydrogel from an aqueous suspension of α-lactalbumin at a concentration Ca-La of between 5 and 60 mg/ml, comprising the following steps:
a) suspending the α-lactalbumin in an acidic aqueous solution having an ionic strength of less than or equal to 60 mM; said suspending consisting in:
(a1) preparing an acidic aqueous solution having a concentration of protons expressed in mM determined by the sum: (numerical value of Ca-La expressed in g/l)+10;(a2) suspending the α-lactalbumin in said acidic aqueous solution; and(a3) if necessary, adjusting the pH to a value of between 1.5 and 2.5; b) forming the gel from said α-lactalbumin suspension obtained at the end of step a); said forming of the gel is carried out under the following conditions; at a temperature below 60° C.; with stirring having a strength defined by a Reynolds number of between 37 and 1000; for 10 hours to 1 week, and in the absence of evaporation of water from said α-lactalbumin suspension.