Method and device for measuring accurate contents of core components of liquid beverage in situ in production process

Abstract

The invention discloses a method and a device for measuring the accurate contents of core components of a liquid beverage in situ in the production process. The measurement can effectively provide timely information, can improve the product quality control level greatly, and can reduce the production cost. The technique also can be used for performing brand identity and supervision at the stages of transportation, storage and consumption of a liquid beverage; the mouthfeel and the value of the liquid beverage are normally determined by the contents of a small amount of core components of the liquid beverage, for example, the core components of beer are ethyl alcohol and carbon dioxide at the dissolved state; the core component of white wine and fruit wine is ethyl alcohol at the dissolved state; the core component of carbonated beverages is carbon dioxide at the dissolved state. The invention discloses a sensor based on a mid-infrared ray internal total reflection principle, which can be used for measuring the core components continuously and accurately on a production line synchronously; a characteristic absorption peak between 2.70 micron and 3.40 micron of ethyl alcohol at the dissolved state is selected, and the ratio of ethyl alcohol at the dissolved state is detected; a characteristic absorption peak at 4.27 micron of carbon dioxide at the dissolved state is selected. The measurement accuracy rate is higher than 99%, and the possible interference of a large number of solvent water molecules can be excluded effectively.

Description

[0001] This patent discloses a method and device capable of accurately measuring its core components on-line during the production process of liquid alcoholic beverages. This type of measurement can effectively provide timely information, greatly improve the level of brand quality control, and reduce production costs. [0002] The taste and value of liquid alcoholic beverages are usually determined by the content of a small number of core components. For example, for beer, the core components are dissolved ethanol and carbon dioxide; for liquor and fruit wine, it is dissolved ethanol ; For carbonated beverages, it is dissolved carbon dioxide. [0003] This patent discloses a sensor based on the principle of internal total reflection of mid-infrared rays, which can be used to continuously and accurately measure the above-mentioned core components on the production line. For ethanol in a dissolved state, the characteristic absorption at 2.70 and 3.40 microns will be selected Peak ...

AI Technical Summary

Problems solved by technology

[0011] US Patent Application No. 2003 / 0029228A1 proposes to calculate the carbon dioxide concentration in a high-pressure container containing a liquid through multi-step evacuation, and simultaneously measure the pressure change in the process (6). This method is complicated to operate and has poor accuracy. US patent application 20090048786A1 proposes to indirectly measure the ethanol content (7) by continuously tracking the change in conductivity of the solution. This method has great uncertainty.

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