| 张良晨，田圆，于淼.大豆油甘油二酯油的酶法甘油解制备
与亚临界萃取纯化工艺研究[J].中国油脂,2026,51(8):.[ZHANG Liangchen, TIAN Yuan, YU Miao.Enzymatic glycerolysis preparation and subcritical extraction purification process of soybean oil-based diglycerides oil[J].China Oils and Fats,2026,51(8):.] |
| Enzymatic glycerolysis preparation and subcritical extraction purification process of soybean oil-based diglycerides oil |
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投稿时间：2025-06-27 修订日期：2026-04-28 录用日期：2025-08-22
Published：
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| DOI：10.19902/j.cnki.zgyz.1003-7969.250302 |
| KeyWord:soybean oil diglycerides subcritical extraction response surface methodology |
| FundProject:辽宁省重点研发计划项目（2024JH2/102400004）；辽宁省农业科学院学科建设项目（2025XKJS8533） |
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| Abstract: |
| To provide a theoretical basis and technical guidance for the industrial production and application of soybean oil-based diglycerides (DAG) oil, the DAG oil was prepared from soybean oil using an enzymatic glycerolysis process and purified using subcritical extraction technology. Based on single-factor experiments, response surface experiments were conducted to optimize the preparation and purification process conditions, and the glyceride and fatty acid compositions as well as the physicochemical properties of DAG oil were compared with those of the raw soybean oil. The results showed that the optimal preparation conditions for DAG oil were soybean oil-glycerol-water mass ratio 1∶ 0.5∶ 0.3, enzyme dosage 0.80%(based on the mass of soybean oil), reaction temperature 56 ℃, and reaction time 8 h. Under these conditions, the DAG content in the product was 31.65%. The optimal purification conditions for DAG oil were DAG oil-to-butane mass ratio 1∶ 1.5, extraction temperature 59 ℃, and extraction time 55 min, resulting in a DAG content of 60.23% after purification. The prepared DAG oil consisted of TAG and DAG, with no MAG detected, and its fatty acid composition was similar to that of soybean oil. The acid value, peroxide value, and iodine value of the DAG oil showed no significant differences from those of the raw soybean oil. In summary, the application of subcritical extraction technology to the purification of soybean oil-based DAG oil can effectively increase its DAG content without altering the physicochemical properties of the oil itself. |
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