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| Crystal form and structural hierarchy of the crystal aggregates in beeswax-based oleogels |
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| KeyWord:beeswax-based oleogel crystal form microstructure and morphology structural hierarchy |
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| Abstract: |
| To explain the reason for better oil-holding properties of beeswax-based oleogels, the crystal form and structural hierarchy of crystal aggregates in beeswax-based oleogels were investigated. The beeswax-based high oleic sunflower seed oil and soybean oil oleogels were prepared using high oleic sunflower seed oil and soybean oil as the raw oil and beeswax as the gel factor, respectively.The crystal form and microscopic morphology of beeswax-based high oleic sunflower seed oil and soybean oil oleogels were studied by X-ray diffraction and polarized light microscopy(PLM), respectively. The results of X-ray diffraction showed that the beeswax-based oleogels presented two distinct peak at 2θ 21.3°and 23.7°， however there were no distinct peak in small angel region. The results of PLM indicated that at a magnification of 500, single fine needles or rods (primary particles) and their aggregates (clusters) could be observed, as well as larger aggregate of clusters (clusters) formed by three or four such aggregates with a crossed petal or sea urchin shape. According to the PLM, the structural hierarchy of the crystal aggregates in beeswax-based oleogels was proposed as primary particle-cluster-aggregate of clusters-network, and the network structure results in the compact structure of the crystal aggregates of the oleogels, large specific surface area and fine particles, which could well bind the liquid oil in the oleogels and make the beeswax-based oleogels exhibit good oil-holding properties. |
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