Fruit juices deacidification

Cranberry fruit juice has a natural acidity that makes it difficult to consume as it is and is nowadays use as usually sweetened preparations

The purpose of this study is to offer a product with a limited acidity without adding sugars, while minimising the capture of the compounds of interest (like the flavonoids) in order to preserve the "health" value of the cranberry juice. 


=> Seprosys developed a deacidification method of fruits juice, that may be applied to any acidic juice needing a deacidification, without adding sugars of chemical molecules. This new deacidification process, carried out on an anionic resin, is simple to set up, cheap and does not affect the compounds of interest found in the juice.

=> This method was patented

Fruits juice deacidification patent

Fruits juice deacidification

Procédé de désacidification d'un jus de fruit, notamment d'un jus de canneberge, FR 3056080 (A1)

Treatment of a tobacco extract

Among the toxic compounds that can be found in tobacco smoke, various molecules produced by the degradation of proteins and polyphenols have been identified. In order to reduce  the toxicity of this tobacco smoke, various methods, like the use of flocculants or adsorbants have been tested, without, however, achieving the required yields. 


=> Seprosys developed a process to specifically reduce the proteins and polyphenols present in tobacco using a membrane ultrafiltration followed by an ion exchange. Thanks to this method, close to 100% of the Rubisco (large majority protein in tobacco leaves) and of the chlorogenic acid (most abundant polyphenol) were eliminated from a liquid tobacco extract. 

=> This process has been patented.


Treatment of a tobacco extract patent

Treatment of a tobacco extract

Treatment of tobacco material, WO 2014080225 (A1)

Carboxylic acid separation

Some fermentation processes produce aqueous solutions containing various carboxylic acids and sugars. It can be interesting to develop a process to separate these carboxylic acids against each other. 


In this context, developed a separation process of carboxylic acids that are contained in a solution comprising mono-, di- and tri-carboxylic acids as well as at least one sugar (glucose for example). This process consists of passing the aqueouq solution through a collection of resin particules that are covalently bound with quaternary ammonium groups. 

Carboxylic acid patents

Carboxylic acids separation process

Separating carboxylic acids, WO 2017/079151 (A1)