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| Preparation of diglyceride from sunflower seed oil and its application properties in yogurt |
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| DOI：10.12166/j.zgyz.1003-7969/2020.07.019 |
| KeyWord:diglyceride from sunflower seed oil linoleic acid yogurt rheology texture |
| FundProject:安徽省重大科技专项（18030701156）；省级大学生创新创业项目（201810364006） |
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| Abstract: |
| Diglyceride (DAG) rich in linoleic acid was prepared from sunflower seed oil by enzymatic glycerolysis. Compared with milk fat DAG, the main fatty acid composition of sunflower seed oil DAG were analyzed by gas chromatography,and as a fat substitute, yogurt was prepared, and the rheological and texture properties of DAG yoghurt rich in linoleic acid were determined. The results showed that the optimal process conditions of sunflower seed oil DAG were obtained as follows: mass ratio of glycerol to sunflower seed oil 1∶ 10, amount of lipase 7.13%, and reaction time 12.35 h. Under these conditions, the contents of DAG and linoleic acid in sunflower seed oil DAG were 49.21% and 60.17%, respectively. The structure of sunflower seed oil DAG yogurt was more stable with higher apparent viscosity and better cohesion of gel system compared with milk fat DAG yogurt and milk fat yogurt. |
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