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Process for making and using a low beverage soluble iron content adsorbent and composition made thereby

A technology for alcoholic beverages and iron content, which is applied in the preparation of alcoholic beverages, biochemical equipment and methods, silicon compounds, etc., and can solve problems such as affecting the taste and shelf life of beer.

Inactive Publication Date: 2006-11-15
PI KJU KHLDG INK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, high levels of soluble iron adversely affect beer taste and shelf life

Method used

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  • Process for making and using a low beverage soluble iron content adsorbent and composition made thereby
  • Process for making and using a low beverage soluble iron content adsorbent and composition made thereby
  • Process for making and using a low beverage soluble iron content adsorbent and composition made thereby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In one embodiment of the method of making the product of the invention, STPP is dissolved in water and allowed to mix with sodium silicate at room temperature for 5 hours. The STPP-doped silicate mixture contained 0.1% by weight of STPP, based on sodium silicate. The concentration of the acid solution was 14.4% sulfuric acid and the temperature was about 72°F. The standard SiO of the silicate solution 2 :Na 2 The O weight ratio was 3.25, the solids content was 22%, and the temperature was about 72°F. Adjust the concentration and ratio of silicate and acid so that the hydrosol contains 10% SiO 2 , and make it possible to have 20% more acid than is required to neutralize the sodium present in the silicate solution. The hydrosol can gel in the container at 122°F. The gel time is several hours. The gel was then aged at 122[deg.]F and washed with acidified water, acidified with sulfuric acid. The pH of the acidified water used to remove sodium sulfate was 3.3. This s...

Embodiment 2

[0038] In another embodiment of the method of the present invention, the preparation method of the silica gel is the same as that of Embodiment 1 except that the concentration of STPP is increased. Based on sodium silicate, STPP in Example 2 was 0.15% by weight. Control Sample 2 was also prepared for comparison, using the same procedure as Sample 1, except STPP was not used in the control experiment.

Embodiment 3

[0040] In an example of the second embodiment used to make the adsorbent of the present invention, silica gel was prepared by neutralizing sodium silicate with sulfuric acid. The acid solution has a concentration of 41.8% H 2 SO 4 , a temperature of about 80°F. Standard SiO in Silicate Solutions 2 :Na 2 The O weight ratio was 3.2, the solids content was 31.4%, and the temperature was 80°F. Adjust the concentration and ratio of silicate and acid so that the hydrosol contains 18% SiO 2 , and allow for 20% more acid to neutralize the sodium present in the silicate solution. Preparation of STPP-doped acid aqueous solution Firstly, STPP was dissolved in water, the concentration of STPP based on water was 50 ppm, and then the pH value of the solution was adjusted to 3.4 by adding sulfuric acid. The ratio of gel to wash water is adjusted so that the total amount of STPP used is equal to 0.1% by weight, based on sodium silicate. This sample is referred to as Sample 3.

[0041]...

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Abstract

Sorbent for removing certain undesired components from alcoholic beverages, such as beer, having a low alcoholic beverage soluble iron (BSI) content. These undesired components include impurities that cause refrigeration clouding. The adsorbent consists of two components, a silica component and a polyphosphate chelating agent component such as sodium tripolyphosphate (STPP). The method of using the sorbent includes first contacting the alcoholic beverage with the sorbent to adsorb at least a portion of the undesired components and then separating the sorbent from the alcoholic beverage. The sorbent can be formed by one or a combination of two methods. The first method involves the addition of polyphosphate chelating agents to reactants such as sodium or potassium silicate solutions prior to the gelation stage. The second method involves adding polyphosphate chelating agents to the wash water after formation of the hydrogel. Using the first method substantially reduces the BSI of the sorbent, but the total iron content of the sorbent appears to increase. The second method reduces both the BSI and the total iron content of the silica gel.

Description

technical field [0001] The present invention relates to sorbents having a low alcoholic beverage soluble iron content in alcoholic beverages such as beer. Background technique [0002] Silica gel has been used to remove certain undesirable components from certain alcoholic beverages, typically by adsorption. For example, silica gel has been used in brewing processes to stabilize beer by adsorbing low molecular weight proteins (eg below 40,000 Daltons) that often form haze. Commercial silica gels are manufactured from silicate solutions and mineral acids and contain small amounts of metals such as iron which are partially soluble in alcoholic beverages and contaminate them. The portion of the iron content of soluble silica gel in alcoholic beverages is often referred to as "alcoholic beverage soluble iron" (often abbreviated as "BSI"). Although the BSI of a sorbent is readily identifiable, the BSI varies with different alcoholic beverages, pH, and temperature, among other f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/10B01J20/30C12H1/04C01B33/152C12G1/00A23L2/70C01B33/155C01B33/157C12C13/00C12H1/044C12H1/048
CPCB01J20/103B01J20/30B01J2220/46C12H1/0408B01J20/10
Inventor 胡亚涛陈强
Owner PI KJU KHLDG INK
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