Nonaqueous phase liquids storage

Products formed in plant cells are usually intracellular storage products and must therefore be released from the cells if the product is to be continuously collected in the medium. This is especially important in immobilized cell systems. There are several environmental factors that will allow for release of products such as modifications in the media pH (35) and addition of solvents that permeabilize the cells Q, 36). It has also been demonstrated that operation in two-phase reactors, where the products are extracted into the nonaqueous phase, can be effective. Both liquid-liquid (37) and liquid-solid (38) systems have been used. The continuous release of products in this manner would also favor their continuous production since the storage capacity of the cells would not become limiting. 

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