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Multiscale analysis of monoglyceride oleogels during storage
Author(s) -
Rondou Kato,
De Witte Fien,
Rimaux Tom,
Dewinter Wim,
Dewettinck Koen,
Verwaeren Jan,
Van Bockstaele Filip
Publication year - 2022
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1002/aocs.12645
Subject(s) - monoglyceride , chemical engineering , materials science , characterization (materials science) , nanotechnology , dynamic mechanical analysis , rheology , granularity , asphalt , food science , chemistry , composite material , fatty acid , organic chemistry , computer science , engineering , operating system , polymer
Oleogelation offers the possibility to reduce the saturated fatty acid (SAFA) content while maintaining the desired organoleptic properties. Hereby, SAFAs are replaced by other structurants which can create a three‐dimensional network that immobilizes the liquid oil. Depending on the type of structurants, different structuring routes are identified. The use of monoacylglycerols (MAGs) as structurants is a promising approach thanks to their great self‐assembling properties. However, implementation into the food industry is still hampered due to insufficient characterization. This research includes a multiscale analysis of two dynamically produced MAG‐based oleogels (6% MAGs in oil, MO1 and MO2) as a function of the storage time (up to 8 weeks). Slight differences in the production process resulted in pronounced differences in techno‐functional properties of the MAG‐based oleogels. MO1 consisted of larger crystals, which resulted in a lower rigidity, reduced stability, and lower oil binding capacity compared with the other oleogel (MO2). On the nanoscale, it was found that the crystal nanoplatelets (CNPs) of MO1 contained a higher number of lamellae compared with MO2. Additionally, the results obtained with ultra‐small angle x‐ray scattering indicated a larger equivalent diameter for the CNPs of MO1. As a function of the storage time, both oleogels did not show major structural changes up to 8 weeks of storage.