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| Preparation and characterization of soybean oil based diacylglycerol oleogels |
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| DOI： |
| KeyWord:oleogel diacylglycerol soybean oil stearic acid |
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| Abstract: |
| Diacylglycerol was obtained by enzymatic esterification，and the oleogels were prepared from soybean oil and diacylglycerol. The melting，crystallization and rheology behaviors of diacylglycerol oleogels were evaluated by differential scanning calorimetry，pulsed nuclear magnetic resonance and rotational rheometer. The effects of diacylglycerol dosage on the properties of oleogels were investigated. The results showed that diacylglycerol with higher melting point added to soybean oil could form oleogels with good spreadability，high stability and dense crystal structure. The unsaturated fatty acid content of the oleogels was more than 70.0%，and the oleogels mostly consisted of β and β′ crystals. The diacylglycerol dosage had great effects on the mechanical stability，oil binding capacity and viscoelasticity of oleogels. Those properties parameters increased with the diacylglycerol dosage increasing，in the same time，the saturated fatty acid content also increased. According to the saturated fatty acid content，solid fat content，melting and crystallization characteristics and rheological characteristics，the optimal dosage of diacylglycerol with higher melting point was 20%. |
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