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| Effect of rapid cooling temperature and gelator dosage on the physical properties of phytosterol/oryzanol oleogels |
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| DOI： |
| KeyWord:rapid cooling temperature gelator dosage phytosterol oryzanol oleogel physical property |
| FundProject: |
| Author Name | Affiliation | | ZHANG Huan1, SUN Shangde1, SHI Ziyun1, ZHANG Hao1, CHEN Xiaowei1,2 | 1.College of Food Science and Technology, Henan University of Technology, Zhengzhou 450001, China
2.National Engineering Laboratory/Key Laboratory of Henan Province,Henan University of Technology, Zhengzhou 450001, China |
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| Abstract: |
| To promote the utilization of the phytosterol/oryzanol oleogels in the development of zero-trans, low saturated and nutritional plastic fats, with soybean oil as base oil, phytosterol/oryzanol as gelator, olegoels was prepared under different rapid cooling temperature(5, 20℃) and gelator dosages, and the changes of crystal form, crystal morphology, physical stability, texture and thermodynamic properties of phytosterol/oryzanol oleogels were investigated. The results showed that the hardness and melting point of the oleogels increased with the increase of gelator dosage, attributing to a denser arrangement of crystals. Although no obvious effect on the β crystal form of oleogels by rapid cooling temperature, the rapid cooling at 20℃ resulted in a denser crystals and higher physical stability compared with rapid cooling at 5℃. Compared with the traditional triglyceride solid fat, the relationship between SFC and hardness as well as melting point showed that the melting point increased in a non-linear with the increase of SFC in the oleogels system. Interestingly, a low SFC(4.85%) endowed a high hardness of phytosterol/oryzanol oleogels. To sum up, the rapid cooling temperature and gelator dosage have significant effect on the physical properties of phytosterol/oryzanol oleogels. |
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