Method for identifying organic wine

Abstract

The invention discloses a method for identifying organic wine. The method comprises the following steps: 1) performing freeze drying on a wine sample to be detected; 2) adjusting balance of reference gas until the multi-group N2 reference gas nitrogen stable isotope ratio variation is less than 0.006%; 3) adjusting the temperature of an element analyzer reaction tube to a preset temperature, adjusting the carrier gas flow speed to the preset flow velocity, adjusting the oxygen flow velocity to the preset flow velocity, and introducing oxygen to the predetermined time; 4) analyzing the standard substance nitrogen stable isotope ratio until the difference between a mean value of at least three-time measured values and a standard value is delta<15> is less than 0.05%; 5) putting the sample after freeze drying in the step 1) is an element analyzer, analyzing the nitrogen stable isotope ratio according to a standard substance analysis method; and 6) determining whether the wine is the organic wine or not according to the analyzed data and preset threshold. The organic wine has the beneficial effects that only one index is analyzed to determine whether the wine is the organic wine produced with an organic fertilizer or not, pre-treatment is simple, and the analysis process is completed in 10 minutes.

Description

technical field [0001] The invention relates to the field of food detection, in particular to a method for identifying organic wine. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] Organic wine refers to the wine that has obtained the certified trademark of "organic grape production". It particularly emphasizes the organic nature of wine-making raw materials, that is, pure naturalness. The grapes come from organic vineyards or grown organically without chemical fertilizers and pesticides. Organic vineyards have used natural substances as fertilizers (such as seaweed, livestock manure and mixed plant fertilizers) for 3 consecutive years and harvested them manually. During the winemaking process, special attention is paid to the use of natural yeasts, filtration and clarification methods to enhance the quality of organic wines. Organic wine does n...

AI Technical Summary

Problems solved by technology

[0004] However, there is no corresponding technology in the prior art to identify wine as organic wine or inorganic wine

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