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Geertman
Jan-Maarten Geertman, Ottawa CA
| Patent application number | Description | Published |
|---|---|---|
| 20090061490 | METHOD FOR THE PRODUCTION OF A FERMENTATION PRODUCT FROM A PRETREATED LIGNOCELLULOSIC FEEDSTOCK - A method for obtaining a fermentation product from a sugar hydrolysate obtained from a feedstock containing hemicellulose, by (i) removing suspended fiber solids from said sugar hydrolysate to obtain a clarified sugar solution; (ii) fermenting xylose in the clarified sugar solution in a fermentation reaction with yeast to produce a fermentation broth comprising the fermentation product; (iii) separating the yeast from the fermentation broth to produce a yeast slurry; (vi) treating the yeast slurry thus obtained with an oxidant to kill microbial contaminants, thereby an oxidant-treated yeast slurry; (v) re-introducing at least a portion of the oxidant-treated yeast back to step (ii) to increase the concentration of yeast in said fermentation reaction; and (vi) recovering the fermentation product. | 03-05-2009 |
Jan-Maarten A. Geertman, Voorschoten NL
| Patent application number | Description | Published |
|---|---|---|
| 20110159560 | MODIFIED YEAST STRAINS EXHIBITING ENHANCED FERMENTATION OF LIGNOCELLULOSIC HYDROLYSATES - The present invention relates to novel xylose-fermenting yeast strains (for example, yeast of the genus | 06-30-2011 |
Jan-Maarten A. Geertman, Ottawa CA
| Patent application number | Description | Published |
|---|---|---|
| 20110207192 | METHOD FOR THE PRODUCTION OF A FERMENTATION PRODUCT FROM A SUGAR HYDROLYSATE - The present invention relates to a method for producing a fermentation product from a sugar hydrolysate. The method comprises fermenting the sugar hydrolysate in a fermentation system with yeast to produce a fermentation broth comprising a fermentation product; introducing acid and an oxidant, such as chlorine dioxide, to the fermentation system so as to expose microbial contaminants in the fermentation system at one or more stages to chlorine dioxide and a pH of less than 3.0; and recovering the fermentation product. In one example of the invention, a yeast slurry obtained from a yeast recycle step is treated with acid and the oxidant. | 08-25-2011 |
Robert Michael Geertman, Pl Amhem NL
| Patent application number | Description | Published |
|---|---|---|
| 20110268806 | ANTISOLVENT SOLIDIFICATION PROCESS - The present invention relates to a antisolvent solidification process wherein a liquid medium comprising at least one organic or inorganic compound which is to be solidified is forced through a membrane into one or more antisolvents, or wherein one or more antisolvents are forced through a membrane into a liquid medium comprising at least one organic or inorganic compound which is to be solidified, yielding a composition comprising solid particles comprising said organic and/or inorganic compound(s). | 11-03-2011 |