The effect of homogenization pressure towards the colloidal stability of oat-based drinks at Institut for Fødevarevidenskab - Københavns Universitet

Background
Plant-based-beverage is among products gaining benefit from plant-based diet trending currently. The product is an extract of plant and has “milky” consistency and often marketed as a dairy replacer. There are various plants currently used with oat-based products as the most recent rising-star. The sales of oat-based drinks increased by 76% in Britain in 2017, and 69% in the US in 2018 (Nielsen, 2018; The Economist, 2018). However, the product is a suspension of extract from fragments of plant materials and it is relatively heterogenous. Hence, the physical stability is greatly reduced compared to more homogenous colloid like cow’s milk. Homogenization is a potential method that might be used to increase the physical stability. The effect of homogenization level towards oat-based drinks is not well documented. Hence, this study aims at investigating the effect of homogenization pressure towards the physicochemical stability of oat-based drink.

Objectives
The objectives of this study are below:

To evaluate the difference in physical parameters of various oat-based drink products subjected to different level of homogenization pressure

To use spectroscopic methods to monitor the chemical parameters of the products with importance to colloidal stability

Design
The study will follow the experimetal design below:

Variables Oat source

Homogenization pressure

Method Physical Microscopy

Rheometer

MasterSizer

ZetaSizer

Turbiscan

Spectroscopy FT-IR

Fluorescence

Duration of project: 30 ECTS

Contact person / supervisor:

  • Principal supervisor: Associate professor Karsten Olsen, ko@food.ku.dk, Food Design and Consumer Behaviour Section
  • Co-supervisor 1: PhD fellow, Tiffany Patra, tiffany@food.ku.dk, Food Design and Consumer Behaviour Section
  • Co-supervisor 2: Associate professor, Åsmund Rinnan, Chemometrics and Analytical Technology Section
Attention: When applying for this thesis, remember that there are specific regulations and requirements that needs to be met in order for you to include it as part of your education. For more information on criteria, please contact your local student advisor as outlined here Faculty student advisors (in Danish)

Remember to mention that you found this position on UCPH Projects & Jobs