| ZHEJIANG DSM ZHONGKEN BIOTECHNOLOGY CO., LTD. Patent applications |
| Patent application number | Title | Published |
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| 20110281308 | Yellow Pigments Generation Deficient Sphingomonas Strain and Application Thereof in Gellan Gum Production - A yellow pigments generation deficient | 11-17-2011 |
| 20110281307 | Method for Post-Extracting Low Acyl Gellan Gum - The present invention relates to a post extraction process for preparing low acyl gellan, comprising the steps: deacylation treatment of gellan gum-containing fermentation broth, enzyme treatment, flocculation of low acyl gellan gum with divalent or polyvalent metal cations, clarification treatment of gellan gum solution, dehydration treatment of gellan gum solution, removal of divalent or polyvalent cations and decoloration, and drying and milling. Preferably, the process comprises the step of formulating a proper amount of chelating agent/acid system before the drying and milling step to chelate the added additional divalent cations added during the use of gellan gum, and at the same time to keep the pH value in a relatively stable condition. The present invention also provides the various low acyl gellan gums prepared by the above methods. The product has the following characteristics: a good appearance, a high transmittancy, and high gel strength. In particular, the chromaticity of the product is above 83%, the transmittancy is above 85%, and the gel strength is above 400 g/cm2. | 11-17-2011 |
| 20110269189 | Method for post-extracting high-acyl gellan gum - Disclosed is a method for extracting high acyl gellan from the fermentation broth containing gellan gum with a low production cost and high quality of products, comprising the following steps: (1) Treatment of the fermentation broth with an enzyme; (2) flocculation of the treated fermentation broth with acid; (3) wash of the fiber-like material; and (4) drying and milling. | 11-03-2011 |
| 20110268843 | Method for Post-Extracting Low Acyl Gellan Gum with High Solubility - The invention relates to a post-extraction process for preparing low acyl gellan gum having high solubility property, the process comprising the following steps: (1) enzyme treatment of fermentation broth; (2) flocculation of fermentation broth; (3) deacylation treatment; (4) clarification treatment of deacylated solution; (5) dehydration treatment of clarified and deacylated gellan gum solution; (6) ion exchange and decoloration treatment; and (7) drying and milling. The process according to the invention produces a product, which has largely improved solubility, largely improved quality, good appearance, high transparence, and high gel strength. | 11-03-2011 |
