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发明公开
CN105111069A 一种利用纳滤膜从柠檬酸发酵液中提取柠檬酸的方法 无效 - 驳回

一种利用纳滤膜从柠檬酸发酵液中提取柠檬酸的方法
摘要：
本发明属于柠檬酸提取领域，具体涉及一种利用纳滤膜从柠檬酸发酵液中提取柠檬酸的方法。本发明采用陶瓷膜和纳滤膜组合利用的膜技术对柠檬酸发酵液进行提取。本发明柠檬酸的提取率可高达90.7％，提取后的柠檬酸纯度可高达99.2％。与传统的钙盐法相比，本发明操作简单、提取率高、无副产物；同时本发明简化了生产条件，对环境污染小，适用于工业化大规模生产。
摘要（英）：

The present invention belongs to the field of citric acid extraction, and particularly relates to a method for extracting the citric acid from citric acid fermentation liquid by utilizing a nanofiltration membrane. The present invention uses a membrane technique in combination with a ceramic membrance and the nanofiltration membrane to extract the citric acid fermentation liquid. According to the method, the extraction rate of the citric acid can be as high as 90.7% and the purity degree of the citric acid after extraction can be as high as 99.2%. Compared with traditional calcium salt, the method is simple in operation, high in the extraction rate and free of by-products. Meanwhile, the method simplifies production conditions, has less environmental pollution, and is suitable for industrial mass production.

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