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Crystallization behavior of andiroba oil and palm olein blends
Priscila Dayane de Freitas Santos1, Thayná Torres Da Silva1, Ana Paula Badan Ribeiro1
1Department of Food Engineering and Technology, Faculty of Food Engineering, University of Campinas, Rua Monteiro Lobato, 80, 13083-862 Campinas, São Paulo, Brazil.
Abstract:
The aim of this study was to produce andiroba oil (AO) and palm olein (OL) blends, and characterize their thermal, rheological and crystallization behavior. AO and OL are mainly composed of oleic (45.9-47.0 %), palmitic (28.1-35.5 %), linoleic (10.2-10.8 %) and stearic (4.8-9.2 %) acids. AO contains more triunsaturated and less trisaturated TAGs compared to OL. The incorporation of AO up to 30 % (w/w) decreased the SFC% of the resulting blends, but also reduced their cold stability, showing a higher crystallization onset temperature (Tonset = 5.9-8.5 °C) compared to OL (Tonset = 4.8 °C). In addition, oscillatory rheology indicated that the blends presented higher G' (6.4-19.2 kPa) than pure OL (0.5 kPa) after isothermal crystallization at low temperature. The addition of AO to OL modulated the crystallization and rheological properties of the obtained blends, indicating that this Amazonian oil may be a potential ingredient for structuring cosmetic and food products.
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