MATEC Web Conf.
Volume 268, 2019The 25th Regional Symposium on Chemical Engineering (RSCE 2018)
|Number of page(s)||6|
|Section||Biochemical and Biomedical Engineering|
|Published online||20 February 2019|
Development and physico-chemical characterization of virgin coconut oil-in-water emulsion using polymerized whey protein as emulsifier for Vitamin A delivery
Chemical Engineering Department, Faculty of Engineering, University of Santo Tomas, España Boulervard 1015 Manila, Philippines
Corresponding author: email@example.com
Emulsion systems have become an integral part of food manufacturing, mainly as delivery vehicles of sensitive lipophilic nutrients i.e. Vitamin A. Thus, it is crucial to develop emulsions stable enough to protect these nutrients. In this study, virgin coconut oil (VCO)-in-water emulsion was prepared with polymerized whey protein as emulsifier to encapsulate Vitamin A. The VCO droplets were dispersed in water phase, and Vitamin A was dissolved in oil phase. The study aimed at developing VCO-in-water emulsion to encapsulate and protect Vitamin A, in the form of retinyl acetate, and determining physico-chemical characteristics of the emulsion. In vitro analysis was conducted to determine the stability of the emulsion in encapsulating Vitamin A. Three emulsions were prepared at different homogenization speed: 720, 846.7 and 955.8 rpm. The emulsion made with speed setting of 846.7 rpm gave the best visual characteristics, comparable with dairy butter. Thermal analyses using differential scanning calorimeter showed that the emulsion increased the energy requirement to degrade Vitamin A at simulated stomach pH. Also, microscopy results show the emulsion has an average particle diameter of approximately 10 μm, which remained stable at acidic environment of simulated digestion. Therefore, the emulsion is thermodynamically stable and shows minimal coalescence.
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.