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
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[0017] Example 1
[0018] Example 1 is the preparation of the standard curve for the determination of the mass-volume ratio of water and ethanol in the simple and rapid method for the determination of the non-sugar solids of 8-10% rice wine of the present invention.
[0019] (1) Preparation of artificial ethanol water system
[0020] Measure 8.00ml, 8.40ml, 8.80ml, 9.20ml, 9.60ml and 10.00ml of absolute ethanol with a pipette into 6 100ml volumetric flasks. Place the volumetric flask on the analytical balance and add 92.00g and 91.60g respectively. , 91.20g, 90.80g, 90.40g and 90.00g of distilled water, close the volumetric flask cap repeatedly and mix thoroughly, and let it stand at room temperature for 10 min. Finally, different water and ethanol mass-volume ratios, namely water mass / ethanol volume (corresponding to It is an artificial ethanol water system of 11.500, 10.905, 10.364, 9.870, 9.417 and 9.000).
[0021] (2) Pretreatment of artificial ethanol water system
[0022] Use a ...
Example Embodiment
[0029] Example 2
[0030] Example 2 is the actual measurement of the non-sugar solids of the rice wine sample with an alcohol content of 8 using the new method of the present invention.
[0031] (1) Choose the commercially available Longquan Yellow Wine (produced by Dalian Changxing Island Wine Industry Co., Ltd.), with an alcohol content of 8% 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 8.2 by using the alcohol meter method. After weighing and conversion, the mass of 1L of this rice wine is 994.225g. The temperature of the wine sample was 30°C, and the density of ethanol at this temperature was found to be 0.781g / ml.
[0032] (2) Pre-treatment of the wine samples to be tested
[0033] Use a pipette to transfer 320ul of the yellow rice wine sample to be tested to an empty common ELISA plate, first add 2% mass volume fraction of urea and 2% vol...
Example Embodiment
[0040] Example 3
[0041] Example 3 is an actual measurement of the non-sugar solids of a rice wine sample with an alcohol content of 9 using the new method of the present invention.
[0042] Choose a commercially available Jimo rice wine (produced by Shandong Jimo Yellow Wine Factory Co., Ltd.), and the bottle has an alcohol content of 9%. 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 8.9 determined by the alcohol meter method. After weighing and conversion, the mass of 1L of this rice wine is 1069.672g. The temperature of the wine sample was 30°C, and the density of ethanol at this temperature was found to be 0.781g / ml.
[0043] Refer to Example 2 for measurement, the actual absorbance x=0.182±0.002, and the relevant values are shown in Table 3. If the total solid content measured by the national standard method is used as a benchmark, the value measured...
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