Oxidative stability and characterization of oleogels made from safflower
oil-based beeswax and rice bran wax and their utilization in cake
production
Abstract
In this study, oleogels based on safflower oil were produced from
beeswax and rice bran wax at different ratios. It was aimed to produce
cakes with high level of unsaturated fatty acids by using these oleogels
as a shortening replacer. The characterization and oxidative stability
of oleogels were investigated. Oil binding capacity (OBC), solid fat
content (SFC) and crystallization time (CT) were determined in oleogels.
Moisture content, pH, texture and sensory analysis were performed in the
cakes. In addition, fatty acid composition, free fatty acidity, peroxide
value, conjugated diene-triene and 3-monochloropropane-1,2-diol (3-MCPD)
and glycidyl analyzes were performed pre- and post-cooking in oleogels
and shortening. SFC increased as gelator concentration increased.
Beeswax showed the highest OBC. The shortest CT was determined in rice
bran wax. No changes were observed in the fatty acid composition of
safflower oil following oleogelation. The change in major fatty acids
post-cooking was also not significant. Cakes made with oleogel were
acceptable in terms of texture and sensory properties compared to cake
produced using shortening. Sensory results showed that some cakes
produced with oleogels more acceptable than control. This study revealed
that oleogels produced with safflower oil-based beeswax and rice bran
wax with high unsaturated fatty acid content can be used in cakes rather
than commercial shortening.