Perstraction can overcome these problems due to a membrane separating the fermentation broth from the extractant. As an in situ product recovery technique for the ABE fermentation perstraction is still in its development stages.

Amino acids separation through the charged membrane

A membrane brings many new elements for the separation. Amino acids have been separated by perstraction. Membranes did not only separate extractants and the primary solution but also were selective for amino acids.

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