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Simple and quick measurement method of non-sugar solids in yellow rice wine with alcoholic content of 8-10%

A non-sugar solid, rapid determination technology, applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of high detection cost, time-consuming, unfavorable rapid determination, accurate measurement and batch detection, etc., to achieve good accuracy and reliability , easy and quick operation, low cost detection effect

Inactive Publication Date: 2018-01-30
陈如凯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current national standard of rice wine uses the 4-hour drying method to measure the non-sugar solid content in the wine sample. This method takes a long time, and there are cases where the quality of the wine sample does not reach a constant weight after drying for 4 hours, which is not conducive to rapid determination. , precise measurement and batch testing
In addition, there is a rapid determination method for non-sugar solids in wine samples based on near-infrared spectroscopy, but this method requires expensive equipment and high detection costs

Method used

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  • Simple and quick measurement method of non-sugar solids in yellow rice wine with alcoholic content of 8-10%

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1 is the preparation of a standard curve for the determination of the mass-to-volume ratio of water and ethanol in the simple and rapid determination method for non-sugar solids in rice wine with 8 to 10 degrees of the present invention.

[0019] (1) Preparation of artificial ethanol water system

[0020] Use a pipette to measure 8.00ml, 8.40ml, 8.80ml, 9.20ml, 9.60ml and 10.00ml of absolute ethanol into six 100ml volumetric flasks, and place the volumetric flasks on the analytical balance to add 92.00g and 91.60g respectively , 91.20g, 90.80g, 90.40g, and 90.00g of distilled water, tightly capped the volumetric bottle cap, repeatedly inverted and fully mixed, left at room temperature for 10 minutes, and finally obtained the mass-volume ratio of water and ethanol, that is, the mass of water / volume of ethanol (corresponding to 11.500, 10.905, 10.364, 9.870, 9.417 and 9.000) artificial ethanol water system.

[0021] (2) Pretreatment of artificial ethanol water sy...

Embodiment 2

[0030] Example 2 is the actual determination of the non-sugar solids of rice wine samples marked with an alcohol content of 8 by using the new method of the present invention.

[0031] (1) Select commercially available Longquan rice wine (produced by Dalian Changxing Island Wine Co., Ltd.), with an alcohol content of 8% marked on the bottle. For the sake of accuracy, the alcohol content needs to be measured again, so based on the current national standard of rice wine, the alcohol content of this rice wine is determined to be 8.2 by the alcohol meter method. After weighing and conversion, the mass of 1L of rice wine is 994.225g. The temperature of the wine sample is 30°C, and the density of ethanol at this temperature is 0.781g / ml.

[0032] (2) Pretreatment of rice wine samples to be tested

[0033] Use a pipette gun to pipette 320ul of the rice wine sample to be tested into an empty common microplate, first add 2% mass volume fraction of urea and 2 volume volume fraction of f...

Embodiment 3

[0041] Example 3 is the actual determination of the non-sugar solids of rice wine samples marked with an alcohol content of 9 by using the new method of the present invention.

[0042] Choose commercially available Jimo rice wine (produced by Shandong Jimo Rice Wine Factory Co., Ltd.), with an alcohol content of 9 degrees marked on the bottle. For the sake of accuracy, the alcohol content needs to be measured again, so based on the current national standard of rice wine, the alcohol content of this rice wine is determined to be 8.9 by the alcohol meter method. After weighing and conversion, the mass of 1L of rice wine is 1069.672g. The temperature of the wine sample is 30°C, and the density of ethanol at this temperature is 0.781g / ml.

[0043] Measured with reference to Example 2, the actual absorbance x=0.182±0.002, the relevant values ​​are shown in Table 3. If the total solids content measured by the national standard method is used as a benchmark, the value measured by t...

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Abstract

The invention establishes a brand new method for measuring non-sugar solids in yellow rice wine with alcoholic content of 8-10% by utilizing the principle that a specific double-stranded deoxyribonucleic acid (DNA) fragment has different denaturation degrees in ethanol-water systems with different mass volume ratios of water to ethanol, thus resulting in different degrees of absorbance at 260nm wavelength. The specific double-stranded DNA fragment is as shown in SEQ ID No. 1, and the relationship between the absorbance x of the specific double-stranded DNA fragment and the mass volume ratio yof the water to the ethanol in the ethanol-water system is y is equals to -62.317x + 21.658. The method for measuring the non-sugar solids is suitable for the determination of the yellow rice wine with the alcoholic content of 8-10%, has good accuracy and reliability; long-time drying does not need to be carried out, so that the method is safer; the method is simple and quick to operate, very small in amount of a needed wine sample and low in detection cost.

Description

technical field [0001] The invention relates to a method for detecting non-sugar solids, in particular to a simple and rapid method for determining the non-sugar solids of 8-10 degree yellow rice wine. Background technique [0002] Yellow rice wine is a special wine in my country. It has bright color, rich aroma, sweet taste, mellow flavor, and is rich in amino acids, small molecular sugars, organic acids, vitamins and trace elements. Rice wine is deeply loved by the masses of the people because of its rich nutrition, low alcohol content and unique flavor, mouthfeel and efficacy. Non-sugar solids are a general term for non-volatile components other than sugar in wine samples, and their proportion in rice wine is very small, usually less than 3%. Although the content is low, the non-sugar solids have a great effect. It determines the color, taste, nutrition and efficacy of rice wine to a large extent, and is an important index for the quality evaluation of rice wine. Accord...

Claims

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Application Information

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IPC IPC(8): G01N21/33
Inventor 陈如凯黄种山
Owner 陈如凯
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