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Method and device for on-line monitoring of sulfur dioxide in wine brewing process

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

Active Publication Date: 2019-03-01
CHINA AGRI UNIV
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  • Description
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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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  • Method and device for on-line monitoring of sulfur dioxide in wine brewing process
  • Method and device for on-line monitoring of sulfur dioxide in wine brewing process
  • Method and device for on-line monitoring of sulfur dioxide in wine brewing process

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Embodiment Construction

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

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

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

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

[0044] To facilitate remote monit...

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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 an online sulfur dioxide monitoring method and device used in the wine brewing process. Background technique [0002] In the wine brewing process, sulfur dioxide is an internationally used additive, which can prevent wine from oxidation and corruption. However, the residual amount of sulfur dioxide must be strictly controlled. When the amount added is small, the wine is prone to browning and bacterial diseases; It can also have adverse effects. [0003] my country stipulates in the "National Food Safety Standard Food Additive Use Standard" (GB 2760-2014) that the residual amount of sulfur dioxide in wine should not exceed 0.25g / L, and in the "General Analysis Methods for Wine and Fruit Wine" (GB / T 15038-2006), sulfur dioxide The determination methods are oxidation method and direct iodometric method. Other commonly used chemical detection methods include distillation an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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