A method and a device for measuring an oxygen content of a headspace gas in a beverage can. The beverage can is oriented upside down to allow the headspace gas to collect at the bottom. A hollow piercer on a piercing head forms a sampling opening in the bottom of the can through which the sampling tube penetrates. The liquid level in the beverage can is lowered to establish a direct connection of the gas-filled headspace and the sampling opening. Then the headspace gas is transported from the headspace to a sensor unit via the sampling tube and/or the hollow piercer or the piercing head. The oxygen content and/or an oxygen partial pressure and/or a headspace volume of the headspace gas are determined by the sensor unit. The sampling opening is closed off airtight by sealing elements arranged on the piercer or the piercing head.

A method for determining a reference value of a wine for feasibility of filling an aluminum can, the method comprising: acquiring a pH, an alcohol concentration, and a free sulfite concentration for multiple kinds of wines; calculating a molecular SO.sub.2 concentration of each of the multiple kinds of wines from acquired values of the pH, the alcohol concentration, and the free sulfite concentration; enclosing the multiple kinds of wines into aluminum cans of an identical type, respectively, thereby obtaining multiple kinds of canned wines; putting the multiple kinds of canned wines in storage and evaluating quality of the canned wines after the storage; and determining an upper limit value of the molecular SO.sub.2 concentration based on an evaluation result obtained from the evaluating.

A system for monitoring the characteristics of a material by measuring electrical properties of a material uses a material monitoring device and a cloud database that relates electrical properties of a material to characteristics of that material. The aging and fermentation processes of wine and other alcohols can be monitored. The status and decomposition of foodstuffs can be monitored. The progress of chemical reactions in a vessel can be monitored. Water quality of water from a water conduit can be monitored. These characteristics can be indicated on a product monitoring device or can be communicated to an external computing device.

The present application provides a method for tracing wine origin based on multielements and stable isotopes, comprising the steps of: 1) collecting wine samples from a plurality of origins; 2) filtering the wine samples collected in step 1) and using the filtrate for carbon stable isotope ratio analysis of ethanol and glycerol; using the filtrate for analyzing oxygen stable isotopes in water; performing digestion with HNO.sub.3 overnight, and diluting to a constant volume to be tested; 3) performing carbon stable isotope analysis, oxygen stable isotope ratio analysis and elemental analysis; 4) utilizing information of the origins of the wine samples and analytical data of step 3) to perform statistical modeling to obtain a wine origin discrimination model coefficient matrix and a corresponding predicted accuracy rate of the origin discrimination; and 5) determining attributes of the wine origin by using the statistical model.

A system includes a computing device including a memory configured to store instructions. The computing device also includes a processor to execute the instructions to perform operations including initiating transmission of incident light from one or more light sources to a sealed bottle containing liquid. The operations also include receiving scattered light from the liquid contained in the sealed bottle. The operations also include processing one or more signals representative of the scattered light to detect interactions of the incident light with a particular molecule.

In a method for monitoring the correspondence of a beer sample with a reference beer, at least 15 reference beer samples of the reference beer are brewed with the same ingredients and the same process parameters. Measurement signals for the absorption spectrum of the reference beer samples are captured and a principal component analysis is carried out for the measurement signals, in which at least 15 principal components are ascertained. A factor loading P.sub.R(i,j) is respectively determined for each principal component for the individual reference beer samples and a reference value (I) is ascertained, where i denotes the reference beer sample and j denotes the principal component, .sub.R(j) refers to the mean value of all factor loadings of the j-th principal component and .sub.P(j) refers to the standard deviation of these factor loadings. A reference interval (II) is formed, where n denotes the number of reference beer samples, m denotes the number of principal components, .sub.R(j) denotes the standard deviation of all reference values of the j-th principal component and k denotes a constant not equal to zero. A measurement signal is captured for the absorption spectrum of the beer sample and the factor loadings P.sub.B(i) of this measurement signal are determined for the principal components ascertained for the reference beer samples and a characteristic (III) is formed and compared to the reference interval. Should the characteristic B lie outside of the reference interval, a fault during the production of the beer sample is indicated.

Disclosed is a method for quantifying the taste of wine, comprising the following steps: S1: selecting a sample of the wine; S2: selecting the alcoholic strength, total acidity, total sugar, glycerol, dimethyl butanol, esters and resveratrol as the quantitative indexes of the taste of the wine; S3: detecting the quantitative indexes selected in S2; S4: standardizing the detection results obtained in S3 by using a MaxMin standardized method, and classifying and assigning values to the standardized data by grade, with the value assignment results being associated with a good or a bad taste; and S5: creating a chart according to the standardized detection results from S4, and describing the taste of the wine according to the chart.

The present disclosure provides a portable device and method for controlling an alcoholic beverage through an at least partially transparent container. The method includes acquiring a fluorescence spectrum of the beverage through a wall of the container, normalizing a profile of a measured spectrum according to the maximum intensity of a reference spectrum, calculating a resemblance factor between the measured spectrum and the reference spectrum, and determining if the beverage is genuine according to the obtained value of the resemblance factor.

A method of illuminating and extracting scattered and transmitted light from a liquid within a sealed glass bottle, the method comprising initiating transmission of an incident light beam from a light source to the sealed bottle, directing the incident light beam to totally internally refract within a wall of the sealed bottle and thereby cause an evanescent wave within the liquid to generate scattered or absorbed light, receiving the scattered or absorbed light from the liquid contained in the sealed bottle, and processing one or more signals representative of the scattered or absorbed light, the signals indicative of one or more molecules indicative of a characteristic being present in the liquid contained in the sealed bottle.

The present disclosure provides a portable device for controlling an alcoholic beverage that includes a single light source emitting a monochromatic excitation light beam of a wavelength between 350 and 650 nanometers, a beam splitter to reflect the light beam, a focus and collection lens, and a positioning device to orient the light beam along a direction substantially normal to an outer surface of the container. The positioning device positions the outer surface of the container at a predetermined distance from the focus lens. The device includes a filtering device for filtering fluorescence radiation captured by the focus lens to eliminate wavelengths shorter than or equal to the wavelength of the light beam. A spectrometer module produces a signal corresponding to the measured spectrum of the fluorescence radiation and an analysis module compares the measured spectrum to a reference spectrum.