CN1114048A - Method for detecting wine ageing degree by nuclear magnetic resonance spectrum - Google Patents
Method for detecting wine ageing degree by nuclear magnetic resonance spectrum Download PDFInfo
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- CN1114048A CN1114048A CN 94110246 CN94110246A CN1114048A CN 1114048 A CN1114048 A CN 1114048A CN 94110246 CN94110246 CN 94110246 CN 94110246 A CN94110246 A CN 94110246A CN 1114048 A CN1114048 A CN 1114048A
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Abstract
The invented method consists of sample preparation, instrument regulating and drawing the spectrum graph. The characteristic lies in that after the spectrum graph is finished, the width of the half-hight of each spectral peak is measured accurately to determine the half-height width factor delta 1/2 (OH)/delta1/2 (CH3) of the wine to be detected, and to compare with the measured standard of the wine of this kind to determine the ageing degree of the wine to be measured. Said invention can detect the ageing degree accurately and reliably.
Description
The present invention relates to the detection method of wine ageing degree, particularly utilize nuclear magnetic resonance spectrum to detect the method for wine ageing degree.
The dry respectful flavor of the new wine of harsh product, pungency is strong, and then mouthfeel is soft after aging ageing, and aftertaste is long.How the aging mechanism complexity of wine with physics and chemical change, judges that it still is a difficult problem that its amount of cure is begged the present.Remove at present and be detected as exceptionally the domestic and international quality that all relies on teacher of the sampling wine's trial test method to determine ageing degree and aging back vinosity with chromatography.Obviously, the trial test method about the teacher of being sampled wine's health status and mood quality institute, if can find the instrumental analysis detection method, will more conveniently characterize out truth unavoidably objectively.According to the literature, ethanol is the main root that stimulates the sense of taste, and aging process is ethanol and hydrone association process, and the association body has reduced the concentration of ethanol molecule, decreases pungent and pungency, is that ageing reaches terminal point when association is in steady state (SS).This physical change process forefathers once attempted to characterize with ' HNMR wave spectrum chemical potential in-migration, but because this variation is very little, failed of one's purpose.
The object of the present invention is to provide a kind of method of utilizing nuclear magnetic resonance spectrum to detect wine ageing degree, can be reliably and detect the ageing degree of wine exactly according to it.
The invention provides a kind of method that detects wine ageing degree with nuclear magnetic resonance spectrum, comprise steps such as sample preparation, instrument adjustment, drafting spectrogram, it is characterized in that: after spectrogram was finished, accurately the peak width degree was respectively composed in measurement, determines the halfwidth factor △ of wine to be measured
1/2 (CH3)/ △
1/2 (CH3)), and compare with such wine standard after measured, to determine the degree of aging of wine to be measured.The present invention employing ' HNMR method research wine ageing degree, the live width factor △ that is introduced
1/2(OH)/ △
1/2 (CH3)) successfully having characterized wine aging degree in artificial or conventional aging process, the test data that obtains is coincide with the result that teacher of the sampling wine tastes.Current, can be used as the savour the wine householder method of mouthfeel quality of the Shi Pin that samples wine, after people have grasped this method, be expected to replace the artificial classic method of tasting.Below by embodiment in detail the present invention is described in detail.
Embodiment
Experimental apparatus: the R-24B of Hitachi type RESOLUTION NMR spectrometer, sample φ 5mm, laboratory constant temperature is in 24 ± 1 ℃.
Experimental procedure:
1. after sample hose cleans with ethanol, use the distilled water flushing drying, guarantee that sample hose is totally dry;
2. careful canting wine sample with wine sample rinse sample hose to be measured three times, is got the wine sample at sample inner height 4～5mm, does not add any solvent and object of reference.
When test conscientiously carefully all even, guarantee good magnetic field homogeneity, sweep time 150s, spectrum width 600Hz(10ppm), amplitude 2, the integration amplitude is 7;
The chemical shift of methyl in the ethanol is decided to be 1.16ppm, and as second reference of chemical shift, the book on the art of painting, integrated curve (accident ethanol, sugared content can not drawn integrated curve) are drawn and are amplified spectrogram (seeing accompanying drawing 1).
4. respectively compose peak width degree (mm of unit) with the accurate measurement of reading microscope.
5. measure the halfwidth factor [△ of wine to be measured
1/2(OH)/ △
1/2 (CH3)] numerical value, utilize the half-breadth factor numerical value and the corresponding relation of tasting result of the aging process of various wine of this experiment accumulation to aging terminal point, can draw degree of aging.
Table I and table II and table III are the testing result to several wine.
Table I artificial-aging
1. the martini flavor thinks U.S. 2.042 1.906
2. ripple wine 3.235 2.434
3. Martell Cordon Blue 1.752 1.313
Teacher of the sampling wine thinks that handling the back mouthfeel greatly improves.
The Table II routine is aging
Wine 91 years 93 years
1. Fenyang wine 1.528 1.382
2. homemade brandy 1.502 1.140
3. green bamboo snake 1.954 1.708
Table III
The wine name is compiled test peak width at half height (mm) live width factor remarks
Number time △
1/2 (CHS)△
1/2 (OH)△
1/2 (OH)/ △
1/2 (CHS)
Brandy B
691.06.27 3.412 4.922 1.443
93.06.14 5.220 7.161 1.372
The former 90.03.22 2.348 5.699 2.427 of green bamboo snake
Sample 91.05.15 3.249 6.348 1.954
Ancient well 7
#90.05.29 3.271 4.441 1.358
Tribute wine 91.05.10 3.683 4.787 1.300 is aging
93.06.12 2.960 3.859 1.304 terminal points
Black prestige 04 90.03.29 3.412 6.208 1.819
The scholar avoids
91.04.24 2.618 4.622 1.765
0 93.06.03 3.240 4.311 1.326
Rom 013 90.03.23 2.201 3.357 1.525
Dry wine
91.04.26 3.107 4.710 1.516
1 93.06.02 2.680 3.860 1.440
Claims (1)
1, a kind of method with nuclear magnetic resonance spectrum detection wine ageing degree comprises steps such as sample preparation, instrument adjustment, drafting spectrogram, and it is characterized in that: after spectrogram was finished, accurately the peak width degree was respectively composed in measurement, determined the halfwidth factor of wine to be measured
1/2 (OH)/ Δ
1/2 (CH3), and compare with such wine standard after measured, to determine the degree of aging of wine to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94110246 CN1056235C (en) | 1994-05-10 | 1994-05-10 | Method for detecting wine ageing degree by nuclear magnetic resonance spectrum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94110246 CN1056235C (en) | 1994-05-10 | 1994-05-10 | Method for detecting wine ageing degree by nuclear magnetic resonance spectrum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1114048A true CN1114048A (en) | 1995-12-27 |
| CN1056235C CN1056235C (en) | 2000-09-06 |
Family
ID=5034231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94110246 Expired - Fee Related CN1056235C (en) | 1994-05-10 | 1994-05-10 | Method for detecting wine ageing degree by nuclear magnetic resonance spectrum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1056235C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102375000A (en) * | 2011-09-19 | 2012-03-14 | 海南椰岛（集团）股份有限公司 | Method for testing coconut island deer tortoise wine based on HNMR (hydrogen-nuclear magnetic resonance)-pattern recognition technique |
-
1994
- 1994-05-10 CN CN 94110246 patent/CN1056235C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102375000A (en) * | 2011-09-19 | 2012-03-14 | 海南椰岛（集团）股份有限公司 | Method for testing coconut island deer tortoise wine based on HNMR (hydrogen-nuclear magnetic resonance)-pattern recognition technique |
| CN102375000B (en) * | 2011-09-19 | 2014-09-10 | 海南椰岛（集团）股份有限公司 | Method for testing coconut island deer tortoise wine based on HNMR (hydrogen-nuclear magnetic resonance)-pattern recognition technique |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1056235C (en) | 2000-09-06 |
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