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| 工业酶法和化学法酯交换在油脂改性应用中的比较 |
| Application comparision of industrial enzymatic and chemical transesterification in oil modification |
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| DOI：10.12166/j.zgyz.1003-7969/2020.05.016 |
| 中文关键词: 酶法酯交换 化学法酯交换 油脂改性 反式脂肪酸 |
| 英文关键词:enzymatic transesterification chemical transesterification oil modification trans fatty acid |
| 基金项目: |
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| 中文摘要: |
| 酯交换是重要的油脂改性技术之一，其改性过程中不产生反式脂肪酸。酯交换方法可采用工业酶法和化学法，这两种方法对原料油的含磷量、含水量和过氧化值都有很高的要求，生产出的产品性能较为相近。化学法酯交换通常采用批次式生产，过程中需要采用碱性催化剂。酶法酯交换反应器一般由多个固定化床串联，可以实现连续生产，但酶需要定期更换。酯交换方法的选择需要综合考虑投资费用、操作费用、操作稳定性等因素。 |
| 英文摘要: |
| Transesterification (TE) was one of the important oil modification methods, and no trans fatty acid was produced during the modification process. There were two main transesterification methods, industrial enzymatic TE and chemical TE, both of them had high requirements for phosphorus content, water content and peroxide value of feed oil, and the oil produced by these two TE methods were quite similar. Normally, chemical TE were operated by batch with basic catalyst. Differently, Enzymatic IE could realize continuous production by several immobilized beds in series, but the enzyme needed to be replaced in a certain time. The method selection of chemical or enzymatic TE needed overall consideration of investment costs, operation costs and operation stability. |
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