Stabilisation of oleofoams by lauric acid and its glycerol esters.

Chaoying Qiu, Shaolin Wang, Ying Wang, Wan Jun Lee, Junning Fu, Bernard P Binks, Yong Wang

Food chemistry 2022 Aug 30

filter terms:

Four types of pure lipid, namely lauric acid (LA), glycerol monolaurate (MAG), diglycerol laurate (DAG) and triglyceride laurate (TAG) were used to prepare oleofoams. The relationship between crystal profiles and their performance in oleofoams was established. DAG formed small needle-like crystals while MAG formed large flake-like crystals in oleogels, and crystal shells around air bubbles were observed in LA-, MAG- and DAG-based oleofoams. LA and DAG displayed higher over-run whereas DAG-stabilised foam possessed smaller bubbles and higher physical stability due to the presence of small β and β' crystals. Upon heating, DAG and TAG-based foams showed varying extents of oil drainage indicating the crystals were distributed in a different manner. Therefore, DAG was shown to be an excellent gelator in the fabrication of ultra-stable oleofoams. This work extends the lipid varieties with nutritional features and allows a better understanding on the stabilization mechanisms of lauric acid lipids in oleofoams. Copyright © 2022 Elsevier Ltd. All rights reserved.

Citation

Chaoying Qiu, Shaolin Wang, Ying Wang, Wan Jun Lee, Junning Fu, Bernard P Binks, Yong Wang. Stabilisation of oleofoams by lauric acid and its glycerol esters. Food chemistry. 2022 Aug 30;386:132776