Effects of Different Gel Factors on the Properties of Seseame Oil-based Oleogels

With the sesame oil as material,three different kinds of oleogels in different configurations were prepared by adding shellac(LAC),monoglyceride(MAG),ethyl cellulose(EC). The characterizations of oil holding capacity,hardness,thermodynamic properties and crystalline form of oleogels were studied preliminarily. The results showed that the types of gel factors and the proportion of addition had a certain influence on the critical gelation of oleogels. When the addition ratio was not less than 5%,LAC,MAG could form the oleogels,and when the addition ratio was 3%,EC could form the oleogel. The type of gel factors had an important effect on OBC. When the ratio of gel factor addition was 9%,the OBC value of LAC oleogel was the smallest,which was 55.3%. In the effect of gel factors on hardness,the hardness of three different oleogels increased with the increasing of gel factor addition. In the DSC curve,LAC oleogel showed single peak,MAG oleogel showed double peak,and EC oleogel had no obvious peak. By means of polarizing microscope,the crystal morphology and dispersion of the three kinds of oleogels were different,LAC oleogels crystal particles were small and fine,while MAG oleogels crystal particles were larger and leaf like,which indicated that the microstructure of oleogel was affected by the type of gel factors.