Enzymatic Hydrolysis of Wheat Gluten

Definition of an intensified process for wheat gluten hydrolysis (04/2010 – 04/2014)

Background

This project investigates the enzymatic hydrolysis of wheat gluten under low water conditions. This project is part of the EU-financed LeanGreenFood Training Network. The scientific target of LGF is to rethink current established food processes towards more sustainable food processes by a lower use of chemicals and a decreased energy and water utilization.

Why hydrolyzing wheat gluten?

Wheat gluten, the biggest protein fraction in wheat, contains a lot of interesting functionalities. The ability of wheat gluten to form a cohesive and viscoelastic network with the addition of water e.g. makes typical Dutch bread be the way it is. However, wheat gluten is hardly soluble in water which limits its applications. By hydrolyzing gluten, its water solubility can be increased. Furthermore, mild hydrolysis can increase its emulsifying or foaming capability.

Why using enzymes?

Wheat gluten is most-commonly hydrolyzed using acid/bases or enzymes. Compared to acid or alkaline hydrolysis, enzymatic hydrolysis has the advantage of being a milder process with a more selective hydrolysis.

Why low water conditions?

Many biopolymer products often used in food systems are produced in diluted systems. Dilution is done because of the manageability of the biopolymer system. However, a consequence of the use of the diluted system is the high energy and water consumption of the processes involved.

Aim

The objective of the project is to investigate the hydrolysis of wheat gluten under low water conditions. The understanding of the limiting forces of the hydrolysis reaction, such as the water activity or the enzyme inhibition, will help to gain an insight into different functionality properties of the wheat gluten hydrolysates (e.g. solubility, emulsion & foaming capabilities).

In a later stage of the project an attempt will be made to connect this project with a former PhD project by Elsbeth van der Zalm.

BSc/MSc theses

If you are interested in doing your thesis with me feel free to contact me or just stop by. I usually can offer you interesting topics also in relation to the finished PhD project of Elsbeth van der Zalm.