Online monitoring method and device for sulfur dioxide in wine making process

A sulfur dioxide and wine technology, which is applied in measuring devices, testing food, testing beverages, etc., can solve the problems of high time consumption, complicated analysis process, unsuitable real-time online monitoring, etc., and achieve accurate quality control and raw materials, intelligent detection, good and convenient and real-time effects

Active Publication Date: 2016-11-16
CHINA AGRI UNIV
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Problems solved by technology

The chemical detection method has good accuracy and requires special glass instruments, but the analysis process is complicated and time-consuming, which is not suitable for real-time online monitoring

Method used

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  • Online monitoring method and device for sulfur dioxide in wine making process
  • Online monitoring method and device for sulfur dioxide in wine making process
  • Online monitoring method and device for sulfur dioxide in wine making process

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Embodiment Construction

[0040] The specific embodiments of the present invention will be described in further detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.

[0041] figure 1 It is a flow chart of an online monitoring method for sulfur dioxide in the wine brewing process according to an embodiment of the present invention; refer to figure 1 , The method includes:

[0042] S1: Obtain the current gas phase sulfur dioxide concentration, the current pH value of the wine and the current ethanol concentration during the winemaking process.

[0043] It should be noted that a gas sensor can be used to obtain the current gas phase sulfur dioxide concentration, and the pH value and ethanol concentration of the wine liquid can be used respectively by the pH value sensor and the ethanol sensor.

[0044] In order to facilitate remote monitoring, in this embodiment, the current gas ph...

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Abstract

The invention discloses an online monitoring method and device for sulfur dioxide in wine making process and relates to the technical field of food monitoring. Based on the gas-liquid phase equilibrium and dissociation equilibrium principle in the wine making process, multiple factors influencing equilibrium are fully considered, after data in the wine making process is acquired, a gas-liquid equilibrium coefficient and an ionic equilibrium coefficient of a current wine equilibrium system are calculated through a linear regression function, the concentration of molecular-state sulfur dioxide in the wine is calculated according to a gas-liquid phase molecular-state sulfur dioxide equilibrium relationship, and then the concentration of free-state sulfur dioxide is calculated according to a dissociation equilibrium relationship between the molecular-state sulfur dioxide and free-state sulfur dioxide in liquid. By means of online monitoring method and device, the concentration of the free-state sulfur dioxide in the wine can be quickly, nondestructively and intelligently detected, convenience and real-time performance are achieved, and direct, efficient and accurate wine quality monitoring and quality control and raw material saving in the making process can be achieved easily.

Description

Technical field [0001] The invention relates to the technical field of food monitoring, in particular to a method and device for online monitoring of sulfur dioxide in the wine brewing process. Background technique [0002] In the wine brewing process, sulfur dioxide is an internationally used additive, which has the effect of preventing oxidation and corruption of wine. However, the residual amount of sulfur dioxide must be strictly controlled. When the amount is small, the wine is prone to browning and bacterial diseases; when used in excess, the wine will produce a pungent odor of sulfur, which not only affects the quality of the wine, but also the health of the human body. It will also have adverse effects. [0003] my country stipulates that the residual sulfur dioxide in wine should not exceed 0.25g / L in the "National Food Safety Standard Food Additives Use Standard" (GB 2760-2014), and the sulfur dioxide in the "General Analysis Method for Wine and Fruit Wine" (GB / T 15038-2...

Claims

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Application Information

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IPC IPC(8): G01N33/14
CPCG01N33/146
Inventor 张小栓张旭傅泽田肖新清穆维松孔维府王百川
Owner CHINA AGRI UNIV
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