CN108918345A - The alcoholic strength detection method of grape wine or fruit wine - Google Patents
The alcoholic strength detection method of grape wine or fruit wine Download PDFInfo
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- CN108918345A CN108918345A CN201810966592.0A CN201810966592A CN108918345A CN 108918345 A CN108918345 A CN 108918345A CN 201810966592 A CN201810966592 A CN 201810966592A CN 108918345 A CN108918345 A CN 108918345A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
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Abstract
The present invention relates to grape wine, fruit wine quality inspection technology field, the alcoholic strength detection method of a kind of grape wine or fruit wine is specifically disclosed, by adding a small amount of tannin in sample to be tested, the foam in sample can be eliminated, distillation process is gone on smoothly, effectively shortens the minute of alcoholic strength, improve detection efficiency, and tannin is non-volatile matter, and the measurement that will not influence alcoholic strength is added, guarantees the accuracy of testing result.
Description
Technical field
The present invention relates to grape wine, fruit wine qualities to examine field, and in particular to a kind of inspection of the alcoholic strength of grape wine or fruit wine
Survey method.
Background technique
Traction between grape wine is continuously improved, and national standard, professional standard, company standard examine grape wine
Survey index requirement be also continuously improved, to the detection efficiency of staff, testing result accuracy and inspection security it is also proposed that
Higher requirement.
Alcoholic strength plays vital work to the quality of grape wine as an extremely important index in grape wine
With.《Grape wine, fruit wine universaling analysis method》It is provided in GB/T15038-2006, the method for measuring alcohol content has density bottle
Method, gas chromatography and alcohol meter method, wherein density bottle method is the first recommendation detection method, because it uses equipment simple general-purpose,
Detection method is convenient and efficient, is the prefered method of current most of manufacturers.
But when at present using the alcoholic strength of density bottle method detection grape wine former wine, sample generates a large amount of bubbles when distilling,
It can not be carried out to make to distill link.According to this phenomenon, researcher has carried out multiple trial and experiment：1, sample preparation is reduced
Quantity (sampling 50ml), effect is not significant, not can avoid a large amount of generations of bubble still；2, distillation process is utilized and is constantly cooled
Mode reduce bubble generation, effect is obvious, but directly results in following bad result：A is cooling not in time, a small amount of bubble into
Enter in distillate, the alcohol distilled out is impure, influences the accuracy of testing result；B distillation is heating process, to collect volatility
Substance-alcohol constantly cools the time for increasing distillation process by 2-3 times, seriously affects working efficiency；The side of cooling c
Method causes explosion risk, the very big hidden danger of the security presence to experimenter.
Summary of the invention
For the above state of the art, the present invention provides the alcoholic strength detection method of a kind of grape wine or fruit wine, can effectively keep away
Exempt from influence of the bubble to distillation process in grape wine former wine sample.
To achieve the above object of the invention, present invention employs the following technical solutions：
The alcoholic strength detection method of a kind of grape wine or fruit wine, is that sample to be tested is detected to its alcohol after tannin processing
Degree.
Preferably, the tannin processing is：0.1~0.5g tannin is added in every 100mL sample to be tested.
It is further preferred that sample to be tested is stirred evenly after tannin is added, then carry out the detection of alcoholic strength again.
Preferably, its alcoholic strength is detected using density bottle method.
Preferably, the alcoholic strength detection method of the grape wine or fruit wine, specifically includes following steps：
(1) sample to be tested is placed in cucurbit, adds tannin and bead, distillation, distillate is collected in condensation；
(2) density bottle is dry to constant weight, its weight is referred to as m；
(3) distilled water will be filled it up in density bottle, call heavy m in the following text in 20 DEG C1；
(4) distilled water in density bottle is poured out, is rinsed 3~5 times with the distillate of step (1), then fills distillate,
Heavy m is called in the following text in 20 DEG C2；
(5) it is calculate by the following formula the density of distillate：
In formula,
Density of the sample at 20 DEG C, unit g/L；
m：The quality of density bottle, unit g；
m1：The quality of density bottle and water at 20 DEG C, unit g；
m2：The quality of density bottle and water sample at 20 DEG C, unit g；
ρ0：The density (998.2g/L) of distilled water at 20 DEG C；
A：Aerostatic buoyancy corrected value；
ρu：Density value (≈ 1.2g/L) of the dry air in 20 DEG C, 1013.25hPa.
(6) according to the density of distillate being calculated, checked in alcohol water blend density and the alcoholic strength table of comparisons to
The alcoholic strength of sample.
The present invention can eliminate the foam in sample by adding a small amount of tannin in sample to be tested, keep distillation process smooth
It carries out, effectively shortens the minute of alcoholic strength, improve detection efficiency, and tannin is non-volatile matter, is added not
The measurement that will affect alcoholic strength guarantees the accuracy of testing result.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
Dry white wine former wine is made as test specimen by raw material using Hebei Changli producing region shrimps and crabs, carries out alcohol
The measurement of degree, specific step is as follows：
(1) 100ml sample (20 DEG C of liquid temperature) is accurately measured with a clean, dry 100ml volumetric flask, is placed in 500ml steaming
It evaporates in bottle, with 50ml moisture, flush volume bottle, washing lotion are fully incorporated in cucurbit three times, and the sample observed in cucurbit has largely
Foam occurs.In the sample plus several beades, then 0.5 gram of tannin is added, stirred evenly, condenser is connected, with sampling
Former volumetric flask makees receiver (additional ice bath).Open cooling water, slow heating distillation.Distillate is collected close to scale, removes appearance
Measuring bottle, Gai Sai.30min is kept the temperature in 20 DEG C of ± 0.1 DEG C of water-baths, water supplement to scale mixes, spare.
(2) density bottle is cleaned and is dried, band thermometer and side opening cover are weighed.Dry and weighing is repeated, until constant weight, obtains
Its quality m is 28.6014 grams.
(3) thermometer is removed, the distilled water for being cooled to 15 DEG C or so will be boiled and occupy the density bottle in weighing, plug temperature
It counts, must not have bubble in bottle.Density bottle is immersed in 20 DEG C ± 0.1 DEG C of water bath with thermostatic control, band contents temperature is protected up to 20 DEG C
Hold 10min it is constant after, with filter paper suck test tube spilling liquid, flush the liquid level in side pipe with side pipe nozzle, cover immediately
Side opening cover takes out density bottle, dries the water in bottle wall with filter paper, weigh immediately, obtain its quality m1It is 53.2465 grams.
(4) distilled water in density bottle is poured out, is rinsed 3~5 times with the distillate of step (1), then fills distillate,
According to operating in 20 DEG C and call in the following text and restore its quality m in step (3)2It is 52.8725 grams.
(5) density for being calculate by the following formula distillate is 983.07 grams per liters.
(6) according to the density of distillate being calculated, checked in alcohol water blend density and the alcoholic strength table of comparisons to
The alcoholic strength of sample is 11.4%vol.
Comparative example 1
Basic operation is same as Example 1, the difference is that tannin is not added, has after beginning to warm up distillation a large amount of big
It measures foam to generate, so that distillation can not be carried out and be terminated.
Comparative example 2
Basic operation is same as Example 1, the difference is that tannin is not added, and sample size is changed to 50mL, is starting
Equally there are a large amount of foams to generate after heating distillation, so that distillation can not be carried out and be terminated.
Comparative example 3
Basic operation is same as Example 1, the difference is that tannin is not added, and after distillation generates foam, uses ice water
The wet towel of immersion cools down to reach defoaming purpose, continues to distill after defoaming, repeats ice wet hair after generating a large amount of foams again
The step of towel impregnates, so that distillation is gone on smoothly.
Effect example
The detection effect of above-described embodiment 1 and comparative example 1~3 is shown in Table 1.
The testing result of 1 different operation of table compares
Seen from table 1, the method that the conventional method of comparative example 1 and 2 sample of comparative example halve is generated because of a large amount of bubbles, nothing
Method goes on smoothly experiment, cannot obtain experimental result；And comparative example 3 can measure experimental result, but experimental period is longer, no
It is able to satisfy the timeliness requirement of inspection result, and experimentation hot and cold alternation carries out, and increases explosion risk, is easy to scald experimenter
Wound；The inspection result data of embodiment 1 and comparative example 3 are within the experimental error that national standard allows, and distillation time is short, no
There are additional explosions, scald risk, can fast and accurately obtain inspection data.
Embodiment 2
Substantially same as Example 1, the difference is that tannin additive amount is 0.3g, tannin is added and steams after mixing evenly
It evaporates.Testing result and embodiment 1 are suitable.
Embodiment 3
Substantially same as Example 1, the difference is that tannin additive amount is 0.1g, tannin is added and steams after mixing evenly
It evaporates.Testing result and embodiment 1 are suitable.
Embodiment 4
Sample is the Cabernet Sauvignon fermentation pink wine former wine of ferment middle, other operations are same as Example 1, and sample steams
Evaporating the time is 16min, and measuring alcoholic strength is 6.7%vol.
Experiment in above embodiments and comparative example under square one in triplicate, experimental result without significant difference,
Prove that the method for the present invention can efficiently, accurately and safely detect the alcoholic strength of former wine.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modification, equivalent replacement or improvement etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (6)
1. the alcoholic strength detection method of a kind of grape wine or fruit wine, it is characterised in that：Sample to be tested detects it after tannin processing
Alcoholic strength.
2. the alcoholic strength detection method of grape wine as described in claim 1 or fruit wine, it is characterised in that：The tannin processing
For：0.1~0.5g tannin is added in every 100mL sample to be tested.
3. the alcoholic strength detection method of grape wine as claimed in claim 2 or fruit wine, it is characterised in that：Being added after tannin will be to
Sample stirs evenly, and then carries out the detection of alcoholic strength again.
4. the alcoholic strength detection method of grape wine as claimed in any one of claims 1 to 3 or fruit wine, it is characterised in that：Using
Density bottle method detects its alcoholic strength.
5. the alcoholic strength detection method of grape wine as claimed in claim 4 or fruit wine, it is characterised in that：Include the following steps：
(1) sample to be tested is placed in cucurbit, adds tannin and bead, distillation, distillate is collected in condensation；
(2) density bottle is dry to constant weight, its weight is referred to as m；
(3) distilled water will be filled it up in density bottle, call heavy m in the following text in 20 DEG C1；
(4) distilled water in density bottle is poured out, is rinsed 3~5 times with the distillate of step (1), distillate is then filled, in 20
DEG C call heavy m in the following text2；
(5) it is calculate by the following formula the density of distillate：
In formula,
Density of the sample at 20 DEG C, unit g/L；
m：The quality of density bottle, unit g；
m1：The quality of density bottle and water at 20 DEG C, unit g；
m2：The quality of density bottle and water sample at 20 DEG C, unit g；
ρ0：The density of distilled water at 20 DEG C；
A：Aerostatic buoyancy corrected value；
ρu：Density value of the dry air in 20 DEG C, 1013.25hPa.
(6) it according to the density for the distillate being calculated, checks in alcohol water blend density and the alcoholic strength table of comparisons to test sample
The alcoholic strength of product.
6. the alcoholic strength detection method of grape wine as claimed in claim 5 or fruit wine, it is characterised in that：ρ0Value is 998.2g/
L, ρuValue is 1.2g/L.
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Cited By (2)
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| CN112379063A (en) * | 2020-11-13 | 2021-02-19 | 杭州齐威仪器有限公司 | Method for testing alcohol concentration of wine containing alcohol and other substances simultaneously |
| CN113390747A (en) * | 2021-06-09 | 2021-09-14 | 劲牌有限公司 | Method and device for detecting and grading alcohol content on line in process of brewing and distilling white spirit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112379063A (en) * | 2020-11-13 | 2021-02-19 | 杭州齐威仪器有限公司 | Method for testing alcohol concentration of wine containing alcohol and other substances simultaneously |
| CN113390747A (en) * | 2021-06-09 | 2021-09-14 | 劲牌有限公司 | Method and device for detecting and grading alcohol content on line in process of brewing and distilling white spirit |
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