Test device for measuring stability of beer foam

A foam stability and test device technology, which is applied in the direction of testing food, testing beverages, and material inspection products, can solve the problems of large influence of temperature fluctuations, reduced reliability of measurement methods, and concealed differences, and achieves easy operation and improved performance. The effect of the degree of automation, data processing capability, and reliability improvement

Active Publication Date: 2012-06-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The common deficiency that the above devices and methods exist is that it fails to realize the dynamic monitoring of the whole process of foam defoaming.
The four devices and measurement methods all use cumulative quantities (such as total defoaming time) to describe and evaluate the dynamic process of defoaming, so it may cover up many differences in the process, and it is difficult to accurately clarify the relationship between foam active ingredients and foam characte

Method used

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  • Test device for measuring stability of beer foam
  • Test device for measuring stability of beer foam
  • Test device for measuring stability of beer foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 1.1 Test purpose: evaluation of beer foam dynamic defoaming process

[0057] 1.2 Test principle: The defoaming process is a process in which the upper bubble level keeps decreasing and the lower bubble level keeps rising. Record the time it takes for the bubble level to rise by one volume scale, and then continue to calculate the foam equivalent volume corresponding to each moment point, and observe the dynamic change of the foam volume over time. The fluctuation of foam volume and defoaming rate during the defoaming process can be obtained by the matching defoaming curve analysis software.

[0058] 1.3 The test steps are as follows:

[0059] 1.3.1 Insufflation of CO 2 Air bubbling:

[0060] (1) Adjust the low temperature and constant temperature water bath to stabilize the temperature at the set value of 15~65°C;

[0061] (2) Slowly pour the degassed beer into the foam thermostat, and pre-constant for 15-30 minutes;

[0062] (3) Adjust the Shatou gear to the prese...

Embodiment 2

[0074] 2.1 Purpose of the test: Evaluation of foam stability of different brands of beer

[0075] 2.2 Experimental principle: The defoaming curve of beer foam is a typical three-segment curve, and the slope of the fitting line of the second segment curve can reflect the foam retention of foaming substances in beer, and it can be compared with the foam retention time measured by the stopwatch method. There is a significant correlation, so the slope of the second section of the defoaming curve can be used to characterize the size of the foam stability.

[0076] 2.3 The test steps are as follows:

[0077] 2.3.1 Insufflation of CO 2 Air bubbling:

[0078] (1) Adjust the low temperature and constant temperature water bath to stabilize the temperature at the set value of 15~65°C;

[0079](2) Slowly pour the degassed beer into the foam thermostat, and pre-constant for 15-30 minutes;

[0080] (3) Adjust the Shatou gear to the preset value (1~7 gears are available);

[0081] (4) O...

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Abstract

The invention provides a test device for measuring the stability of beer foam. The test device comprises a foam thermostat, a gas dispersion head, a thermostatic device, a pulley block and a CO2 gas bottle, wherein all the members are distributed and connected according to a gas pipeline and a constant-temperature water circulating path of a system. The test device provided by the invention can be used for researching a dynamic de-foaming process of the beer foam, evaluating the stability of the beer foam, the collection of active substances of the foam and a relation between the active substances of foam and the foam stability, and the like. The test device for measuring the stability of the beer foam has the characteristics of simple structure, low cost and easiness in operation.

Description

technical field [0001] The invention relates to the technical field of measuring beer foam, in particular to a test device for measuring the stability of beer foam. Background technique [0002] Foam is a typical feature that distinguishes beer from other alcoholic beverages. It is also an important evaluation index of beer quality and an important characteristic that determines consumers' willingness to purchase. Structurally, the foam is composed of a gas phase, a liquid phase, and a surface-active component that stabilizes the foam. In the traditional beer foam detection method, the gas phase required for the formation of foam is the CO carried by the beer itself. 2 supply. During the foaming process, the CO of the beer itself 2 Released under external force (dumping) or decompression, at the same time, the inherent surface active components (such as protein, α-acid) of beer itself dissociate to the surface of the gas phase and solidify into the bubble wall, making the...

Claims

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Application Information

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IPC IPC(8): G01N33/14
Inventor 赵海锋张丽达赵谋明崔春
Owner SOUTH CHINA UNIV OF TECH
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