65 results about "Ethanol content" patented technology

The invention discloses a strain of saccharomyces cerevisiae CPJ-02 with high acid resistance, high ethanol content and strong ester aroma generation and application of the saccharomyces cerevisiae CPJ-02, the strain of the saccharomyces cerevisiae CPJ-02 has been preserved in China Center for Type Culture Collection on June 27, 2024; the preservation number of the strain is CCTCC NO: M 20241388. The saccharomyces cerevisiae CPJ-02 strain is milky white to faint yellow after being cultured on a YPD solid plate for 48 hours, the surface is dry and matte, the texture is slightly rough, and the colonial morphology is round. The saccharomyces cerevisiae CPJ-02 strain has prominent high ethanol tolerance, and still has activity greater than or equal to 92% in a 12% ethanol environment; and the fermentation product is rich in aroma and high in ethyl caprylate and phenethyl alcohol content, more than or equal to 25 volatile substances are detected by GC-MS (gas chromatography-mass spectrometry), and the fermented product is rich in fruit fragrance and has ester flower fragrance. The saccharomyces cerevisiae CPJ-02 strain is suitable for production of high-concentration wines and directional production of low-concentration healthy fermented beverages, fermented foods and aroma compounds.

The invention provides tamarind polysaccharide gel and a preparation method and application thereof.The preparation method of the tamarind polysaccharide gel comprises the following steps that S1, beta-galactosidase is added into a tamarind polysaccharide aqueous solution, alcohol precipitation and drying are performed after enzymolysis and enzyme deactivation, and tamarind polysaccharide subjected to enzyme treatment is obtained; wherein the enzymolysis time is 1 to 2 hours; s2, adding the tamarind polysaccharide subjected to enzyme treatment into an ethanol water solution, and stirring to obtain a mixed solution; wherein the volume ratio of the ethanol in the mixed solution is less than or equal to 15%; s3, refrigerating the mixed solution to obtain the tamarind polysaccharide gel. According to the method, stable gel can be formed under the condition of low ethanol content, the irritation of the product is reduced, the strength of the gel can be considered, and the application range of the tamarind polysaccharide can be expanded.

The invention discloses a workshop management early warning method and system based on multi-source environmental bacteria information, and relates to the technical field of workshop management. The method comprises the following steps: confirming m sampling areas in a current workshop, and obtaining real-time bacteria information of the current workshop from the sampling areas; judging whether the current workshop meets quality control conditions or not based on the real-time bacterial genus information; the quality control conditions comprise that each sampling area contains n types of characteristic bacteria, and the relative abundance value of the characteristic bacteria meets a threshold condition; the relative abundance value of each characteristic bacterial genus is in positive correlation or negative correlation with the ethanol content; and when the current workshop does not meet the quality control condition, sending an early warning instruction. According to the method, the quality control conditions are set, the bacteria information of multiple areas in the workshop is detected, the bacteria information of the workshop is compared with the quality control conditions, and whether the workshop environment meets the requirements of the quality control conditions or not is judged; if not, an alarm is given out in time, and a manager is reminded to pay attention to the workshop microorganism state in time after the alarm is given out.

This invention discloses an energy-saving five-tower methanol distillation method based on multi-effect thermal coupling. Crude methanol is fed to a pre-tower for distillation; the bottom product of the pre-tower is fed to an atmospheric distillation tower, the bottom product of the atmospheric distillation tower is fed to a negative pressure distillation tower, and the bottom product of the negative pressure distillation tower is fed to a pressurized distillation tower; the bottom product of the pressurized distillation tower is fed to a secondary pressure distillation tower; refined methanol is collected from the tops of the pressurized distillation tower, the atmospheric distillation tower, the negative pressure distillation tower, and the secondary pressure distillation tower; the top product of the pressurized distillation tower heats the reboiler of the secondary pressure distillation tower, and the top product of the secondary pressure distillation tower heats both the reboilers of the pre-tower and the atmospheric distillation tower; the top products of the pre-tower and the atmospheric distillation tower heat the reboiler of the negative pressure distillation tower. This process improves the heat recovery efficiency within the system, significantly reduces the condensation load of the top vapor, lowers the overall energy consumption of the distillation process, and achieves efficient multi-stage heat recovery and utilization within the system, reducing the ethanol content in the refined methanol product and improving methanol recovery efficiency.

The invention discloses a double-hot-trap five-tower positive-pressure triple-effect methanol rectification device and a process method, and belongs to the technical field of rectification. The device comprises a pre-rectifying tower, a normal-pressure rectifying tower, a medium-pressure rectifying tower, a high-pressure rectifying tower and a methanol recovery tower which are connected in sequence, wherein the lower part of each tower is connected with a corresponding reboiler. Steam at the top of the medium-pressure rectifying tower supplies heat to a pre-rectifying tower reboiler II and a normal-pressure rectifying tower reboiler, steam at the top of the high-pressure rectifying tower supplies heat to a medium-pressure rectifying tower reboiler, and high-temperature wastewater at the bottom of the high-pressure rectifying tower supplies heat to a methanol recovery tower reboiler. Through multi-tower heat integration, remarkable energy conservation is achieved, the unit consumption of process steam is 0.55-0.6, the system is suitable for medium and small-scale production expansion and treatment of crude methanol raw materials with high ethanol content, system coupling is simple, the starting difficulty is low, and the yield and quality of refined methanol are high.

The utility model provides a crude methanol refining device which comprises a pre-rectifying tower, the pre-rectifying tower is respectively connected with a side line tower and a pressurizing tower, the pressurizing tower is connected with an atmospheric tower, and a pre-tower reboiler, a side line tower reboiler, a pressurizing tower reboiler and an atmospheric tower reboiler are respectively arranged on the pre-rectifying tower, the side line tower, the pressurizing tower and the atmospheric tower. The gas phase extracted from the top of the atmospheric tower exchanges heat with the pre-tower reboiler and the side tower reboiler; gas extracted from the top of the pressurizing tower exchanges heat with a reboiler of the atmospheric tower; the thermal coupling technology of the pre-rectifying tower, the side tower, the pressurizing tower and the atmospheric tower is adopted, a heat exchange network is optimized, the energy-saving space is improved, methanol with the concentration larger than 99.99% can be extracted, and the content of ethanol is 10-200 ppm; according to the method, the original devices such as a pre-rectifying tower, a pressurizing tower and an atmospheric tower are improved, the improvement cost is low, and compared with the traditional methanol process, the unit consumption of steam can be reduced to 0.7-0.8 t steam / t refined alcohol, so that the energy consumption is greatly reduced.

The invention relates to a system for converting, at least partially and without combustion, into electrical energy of chemical energy included in an electrolytic solution, being also a subject of the invention, comprising copper hydroxide, potassium hydroxide, ethanol with an alcohol content greater than 90% and double-distilled water. The system (1) comprises an electrolytic cell (3) for subjecting the aforesaid electrolytic solution to electrolysis, and a fuel cell (25) for producing electrical energy from the aeriform mixture generating in the electrolytic cell (3). A further solution (26), also electrolytic, exits from the fuel cell (25) and is re-introduced into the electrolytic cell (3) by means of the passage through a recovery tank (28). The invention further relates to a process, also actuatable by means of the aforesaid system (1), for converting, at least partially and without combustion, into electrical energy the chemical energy included in the aforesaid electrolytic solution.

The present invention provides a beer-flavored beverage with a low ethanol content and excellent fermentation characteristics and flavor typical of beer-flavored beverages, as well as a method for producing the same. [Solution] A beer-flavored beverage is provided that contains less than 0.07 ppm by mass of diacetyl, 0.07 ppm by mass or more of ethyl acetate, and 0.4 (v / v)% or more but less than 1.5 (v / v)% of ethanol, with an H2S content of less than 5 ppb by mass and a final fermentation degree (LA) of 60% or less.

The present invention discloses a method for preparing beer having an ethanol content of 0-1.0 vol. %, comprising providing a medium having an ethanol content of 0-20 vol. %, which medium comprises restricted-fermentation beer; subjecting said medium to a distillation step, thereby reducing the quantity of one or more aldehydes selected from the group consisting of 2-methyl-propanal, 2-methylbutanal, 3-methylbutanal, 3-methylthiopropionaldehyde, phenylacetaldehyde, hexanal, trans-2-nonenal, benzaldehyde and furfural in the medium, and thereby also reducing the ethanol content, if present, to a content in the range of 0-1.0 vol. %. The invention furthermore discloses beer obtained with the said process.

The invention discloses a preparation method of a radix astragali extracting solution with high antioxidant activity and the extracting solution, and aims to solve the problems of low extraction rate of active substances and inaccurate detection of antioxidant activity in the prior art. According to the method, five factors including ethanol content, extracting solution multiple and the like are taken as key variables, U10 * (108) uniform test design is adopted, the DPPH free radical scavenging rate is accurately determined by combining an electron paramagnetic resonance technology, and the contents of astragaloside, general flavone and polysaccharide are synchronously detected. A quantitative model is established through multivariate linear regression analysis, and the optimal process parameters are determined: the ethanol content is 80%, the extracting solution multiple is 4, the temperature is 85 DEG C, the time is 1.5 h, and the extraction time is 1 time. The DPPH free radical scavenging rate of the extracting solution prepared through the technology is larger than or equal to 92.75%, polysaccharide is larger than or equal to 12520 mg / L, total flavone is larger than or equal to 323.77 mg / L, astragaloside is larger than or equal to 257 mg / L, synergistic efficient extraction of multiple components is achieved, and the extracting solution is suitable for industrial production.

The invention provides a system for predicting the content of methanol and ethanol in automotive gasoline, and relates to the technical field of chemical analysis and detection. The method comprises the following steps: firstly, carrying out first chemical treatment on first gasoline to improve the significance of aromatic hydrocarbon, olefin and other components, determining the proportion of an association body according to the components except alcohols in the first gasoline, and further determining a first spectral peak position offset; secondly, carrying out second chemical treatment on the first gasoline, respectively obtaining a characteristic peak combination of each alcohol component so as to remarkably improve the significance, and determining a plurality of first key wavelengths based on each characteristic peak combination; and finally, determining a plurality of corresponding first absorbance values based on the plurality of target key wavelengths so as to finally determine the content of each target component in the first gasoline. According to the method, chemometrics, near infrared spectroscopy and artificial intelligence means are combined, the gasoline component recognition precision is greatly improved, and nonlinear effects such as hydrogen bond association in high-concentration alcohols are effectively corrected.

The present invention relates to a single-serving capsule for preparing a hoppy alcoholic beverage with a foam height. This capsule is characterized in that it comprises at least two compartments, including a first compartment and a second compartment; the first compartment comprising 5-30 mL of an aqueous liquid having an ethanol content of 0-10% ABV and comprising 0.1-25% by weight of protein; the second compartment comprising 5-50 mL of an alcoholic liquid containing 20-99.9% by weight of ethanol, 0-60% by weight of water, and 50-2,000 mg / kg of hop acids selected from iso-alpha acid, hydrogenated iso-alpha acids, hulupones, and combinations thereof; wherein the ethanol and water together constitute at least 80% by weight of the alcoholic liquid.

The invention discloses a multi-element titanium-based oxynitride with a tubular structure and a preparation method and application thereof.The preparation method comprises the steps that absolute ethyl alcohol is added into an electrostatic spinning precursor solution of the multi-element titanium-based oxynitride through an electrostatic spinning method for electrostatic spinning, after electrostatic spinning is finished and drying is conducted, oxidation sintering and nitridation treatment are conducted in sequence, and the multi-element titanium-based oxynitride with the tubular structure is obtained. The multi-element titanium-based nitrogen oxide material with tubular morphology is successfully prepared, and the specific surface area of the multi-element titanium-based nitrogen oxide material is obviously increased; the microstructure of the multi-element titanium-based nitrogen oxide is controlled by optimizing the content of absolute ethyl alcohol, a tubular structure with a large specific surface area is finally prepared, and the tubular structure increases active sites on the surface of the photocatalyst, increases the light absorption area, reduces the carrier transmission distance and effectively improves the light absorption characteristic; the performance of the photocatalyst is improved; therefore, the preparation method has the characteristics of simple process, controllable morphology and low cost.

The present invention relates to an alcoholic beer having an ethanol content of at least 1% ABV and containing 9 (S), 12 (S), 13 (S)-trihydroxy-10 (E)-octadecenoic acid (TOA) and free amino nitrogen (FAN) in a ratio of less than 0.035 mg TOA / mg FAN. The inventors have found that aging of alcohol-containing beer during storage can be retarded by selectively removing 9 (S), 12 (S), 13 (S)-trihydroxy-10 (E)-octadecenoic acid (TOA) from wort prior to fermentation. Another aspect of the invention relates to a method for preparing beer, comprising the following consecutive steps:-providing wort; -contacting the wort with a ZSM-5 zeolite; -separating the treated wort from the ZSM-5 zeolite; -fermenting the treated wort with a yeast to produce a fermented wort having an alcohol content of at least 1% ABV; and-separating the yeast from the fermented wort.

The invention relates to a method preparing a carbonated alcoholic beverage having an ethanol content of 2-12% ABV and a water content of at least 80 wt.%, said method comprising combining: • 0.03-10 parts by weight of beer distillate having an ethanol content of 50-98 wt.% and comprising 200-2,000 mg / kg of amyl alcohols, the beer distillate containing ethyl acetate and amyl alcohols in a weight ratio of ethyl acetate : amyl alcohols of less than 1:30; • 2-30 parts by weight of ethanolic liquid having an ethanol content of 25-100 wt.%; • 0.3-10 parts by weight of fruit juice concentrate; • 0.2-1.2 parts by weight of carbon dioxide; • 60-90 parts by weight of water. The beverage obtained by this method has a unique appealing taste. The beer distillate is an essential component of the beverage. The beer distillate combines a high ethanol content with a high content of amyl alcohols and other beer flavour components having a boiling point in the range of 80-210 °C, such as isoamyl acetate, ethyl caproate, furfural, linalool and dimethyl disulfide.

A process for producing oxygenates from syngas is provided. The process involves mixing syngas with hydrogen sulfide, forming a syngas mixture; contacting the syngas mixture with a catalyst composition in a reactor to obtain a first product stream; splitting the first product stream into a non-condensable material stream and a condensable material stream; directing the non-condensable material stream back into the reactor; and directing the condensable material stream to a distillation column, producing a product stream having a high percentage of ethanol. The catalyst composition includes rhodium, lanthanum, gallium, vanadium and a support.

The invention relates to the technical field of methanol synthesis processes, and discloses a methanol synthesis optimization method based on multi-stage temperature control and hydrogen-carbon ratio dynamic regulation and control. The method comprises the following steps: acquiring real-time process data such as reactor temperature, pressure and raw material gas composition, and inputting the data into a digital twinborn model of an integrated mass and energy conservation equation to obtain catalyst activity and reaction state estimation; the optimal temperature set point and hydrogen-carbon ratio adjustment amount are dynamically solved by taking reduction of unit consumption of fresh gas and inhibition of ethanol content as targets; the temperature of each section of the reactor and a hydrogen recovery device are precisely regulated, and the reflux ratio and temperature of the rectifying tower are cooperatively regulated. According to the method, the technical problems of high fresh gas consumption and high byproduct ethanol content caused by fixed parameters and response lag in a traditional method are solved by constructing a state sensing, dynamic optimization and accurate execution full-process intelligent control system, and the economic benefit and the product quality of methanol production are remarkably improved.

The invention discloses a heavy hydrocarbon catalytic cracking method and a heavy hydrocarbon catalytic cracking device, which are used for producing a carbon material raw material while increasing the yield of low-carbon olefin, improving the yield and selectivity of ethylene, propylene and butylene, reducing the yield of methane, reducing the content of ethanol in the product to the greatest extent and realizing low-cost conversion of ethanol into low-carbon olefin. The method can realize high-selectivity conversion of olefin and ethanol into low-carbon olefin, solves the problem of overhigh yield of ethanol cracking methane, maximally obtains ethylene and propylene, improves the selectivity of methane and coke, and realizes efficient utilization of ethanol and fossil resources.

The invention relates to a method preparing a carbonated alcoholic beverage having an ethanol content of 2-12% ABV and a water content of at least 80 wt.%, said method comprising combining: · 0.03-10 parts by weight of beer distillate having an ethanol content of 50-98 wt.% and comprising 200-2,000 mg / kg of amyl alcohols; · 2-30 parts by weight of ethanolic liquid having an ethanol content of 25-100 wt.%; · 0.3-10 parts by weight of fruit juice concentrate; · 0.2-1.2 parts by weight of carbon dioxide; · 60-90 parts by weight of water. The beverage obtained by this method has a unique appealing taste. The beer distillate is an essential component of the beverage. The beer distillate combines a high ethanol content with a high content of amyl alcohols and other beer flavour components having a boiling point in the range of 80-210 °C, such as isoamyl acetate, ethyl caproate, furfural, linalool and dimethyl disulfide.

The application discloses a method for extracting Hericium erinaceus extract, and comprises the following steps: drying and crushing Hericium erinaceus to obtain Hericium erinaceus powder; putting the Hericium erinaceus powder into a carbon dioxide supercritical extraction kettle; and under the conditions of a pressure of 25-35 MP, a temperature of 30-40 DEG C, a time of 1-2 h and an ethanol content of 0-4 mL / g as a entraining agent, a Hericium erinaceus crude extract is obtained. The method is simple and environment-friendly, and the obtained monomer compound has the effect of preventing and treating type II diabetes.

The application provides a method for preparing a beta crystal form of amikacin, comprising the following steps: (1) dissolving an alpha crystal form of amikacin in anhydrous ethanol or a mixed solution of anhydrous ethanol and acetone, and obtaining a beta crystal form of amikacin wet product through recrystallization; and (2) drying the beta crystal form of amikacin wet product in a drying device with a relative humidity of 70% to 100% at 40 to 70 DEG C under normal pressure for 2 to 10 hours or under vacuum for 2 to 18 hours, so as to obtain a beta crystal form of amikacin with an ethanol content of less than 0.5% by weight. In the application, by controlling the humidity of the drying environment when the product is dried, the ethanol can be effectively removed while the moisture content of the amikacin wet product is maintained, so as to reduce the ethanol content of the amikacin product, meet the requirement of the ICH guideline Q3C that the ethanol content is not more than 0.5% by weight, and greatly improve the safety of amikacin clinical medication.

The utility model discloses a gas sample introduction device for a chromatographic instrument, and particularly relates to the technical field of chromatographic instruments, the gas sample introduction device comprises a heating valve box, a heating resistor is fixedly arranged in the heating valve box, a six-way valve is arranged in the heating valve box, an inert quantitative loop is arranged on the six-way valve, a valve driving block is arranged on one side of the heating valve box, and the valve driving block is arranged on the other side of the heating valve box. A gas inlet and a gas outlet are formed in one side of the external chromatography outer box, a gas inlet filter and a gas outlet filter are fixedly mounted on the gas inlet and the gas outlet respectively, and a gas inlet connecting pipe and a gas outlet connecting pipe are mounted between the gas inlet and the six-way valve and between the gas outlet and the six-way valve respectively. Through the arrangement of the six-way valve, the inert quantitative ring, the gas inlet, the gas outlet and the like, after the chromatographic instrument is modified, the content of methanol in liquid, the content of ethanol in methanol and the content of methanol in gas can be analyzed on the basis of the original configuration, the use requirement can be met, and the actual use effect is better.

The application provides a polypeptide with activated ethanol dehydrogenase activity and application thereof, and relates to the technical field of active polypeptides.The application provides a polypeptide with activated ethanol dehydrogenase activity, wherein the amino acid sequence of the polypeptide is shown as SEQ ID No.1.The polypeptide can activate the activity of ethanol dehydrogenase, stably combine with ADH, improve the catalytic efficiency of ADH on ethanol, reduce the ethanol content in the serum of a mouse after drinking, effectively exert the effects of relieving alcohol, effectively relieve the adverse reactions of a drunk person such as hangover, fatigue and dizziness, and can be used in products for relieving alcohol and protecting liver.

The invention discloses a method for determining the content of ethanol in arginine, which is a headspace sampling gas chromatography method and comprises the following steps: preparing a test solution; preparing a reference solution; performing gas chromatographic analysis; and calculating the ethanol residual quantity by adopting an external standard method. The method for determining the content of ethanol in arginine has the advantages of short sample pretreatment time, high detection efficiency, no need of using an organic solvent, environmental protection and economy; the accuracy and the reliability of a detection result are ensured by precisely optimizing the headspace equilibrium temperature, the headspace equilibrium time and the gas chromatography separation condition design; the method disclosed by the invention is high in detection sensitivity, high in accuracy, good in precision, stable in determination result, suitable for a wide-range concentration range from a quantitation limit to a high concentration, very flexible in application range, and integrated with simplicity, convenience, exclusiveness, sensitivity and accuracy, and has a significant industrial application value.

The present invention relates to a manufacturing process for a packaged liquid beer concentrate, characterized in that said process comprises: providing an alcoholic beer comprising 3-12% ABV of ethanol; removing at least a portion of the ethanol from the alcoholic beer by means of distillation, thereby producing (i) a low-alcohol beer having an ethanol content of 0-1.5%.5% ABV of alcohol and (ii) an alcoholic liquid containing at least 10% ABV of ethanol; removing at least 70% by weight of the water present in the low-alcohol beer by membrane separation and / or concentration by liquid beer, wherein the membrane separation is selected from nanofiltration, reverse osmosis and forward osmosis; if the alcoholic liquid contains less than 20% ABV of ethanol, concentrating the alcoholic liquid to an ethanol content of at least 30% ABV by distillation, reverse osmosis or forward osmosis; separately packaging the liquid beer concentrate and the alcoholic liquid within a single container or within separate containers which together form a kit of parts.

This invention discloses an automatic heat-insulating sample delivery device for a drop hammer test, relating to the field of impact testing technology. It includes: a sample heat-insulating mechanism comprising a heat-insulating box containing a heat-insulating liquid; and a sample delivery mechanism comprising a delivery track and a robotic arm assembly moving along the delivery track. The heat-insulating box and the drop hammer detection station are both located directly above the displacement path of the robotic arm assembly. The heat-insulating liquid is industrial alcohol, and its chemical composition and mass percentage include: ethanol content ≥95.0%, methanol content ≤0.06%, water content ≤5%, and impurities controlled ≤0.5 mg / L. This invention regulates the temperature of the heat-insulating liquid through a temperature control component, achieving rapid cooling and heating of the industrial alcohol, facilitating the setting of different sample conditions, and ensuring a stable industrial test temperature.

The present invention provides a method for producing a composition that acts on arbuscular mycorrhizal fungi to enhance their ability to infect plants and promote symbiosis between arbuscular mycorrhizal fungi and plants, and provides a method for producing the composition that offers improved production efficiency compared to conventional techniques. [Solution] An extract is obtained by extracting a plant of the Gentianaceae family with 40-60% by weight of ethanol-containing alcohol (ethanol content of the ethanol-containing alcohol is 80% by weight or more), and the obtained extract is used as a composition for enhancing the infectivity of arbuscular mycorrhizal fungi.

The invention pertains to a beer having an ethanol content of 0-1.0 vol. %, comprising at least 0.001 μg / l ethyl-2-methylpentanoate (EMP). It has been found that EMP has a strong wort-flavor masking effect. A beer of the invention has low wort-flavor and less overpowering flavor, and is generally considered refreshing.

The invention relates to the field of synthesis of organic small molecule compounds, in particular to a preparation method of triethyl phosphate. The preparation method of triethyl phosphate provided by the invention comprises the following steps: mixing phosphorus oxychloride and excessive absolute ethyl alcohol for reaction to obtain TEP reaction liquid; the TEP reaction liquid is firstly subjected to a low-temperature negative-pressure throwing disc dealcoholization step and then subjected to a high-temperature negative-pressure falling film evaporation dealcoholization step, and a TEP crude product is obtained; the method comprises the following steps: carrying out primary negative pressure rectification on a TEP crude product to remove acid-containing ethanol, and then carrying out secondary negative pressure rectification to obtain a TEP pure product, according to the obtained TEP pure product, the ethanol content is smaller than or equal to 0.05 wt%, the acid value is smaller than or equal to 0.1 mgKOH / g, the water content is smaller than or equal to 0.05 wt%, the TEP content is larger than or equal to 99.5 wt%, no extra solid waste is discharged in the preparation process, cyclic utilization of raw materials is achieved, and the method is environmentally friendly and efficient.

This invention provides a method for quantifying ethanol in water-containing formulations that enables highly reproducible gas chromatography quantitative analysis by removing water in a simple manner without requiring special testing equipment. [Solution] A method for quantifying ethanol in a water-containing formulation, characterized by comprising: 1) a step of uniformly dissolving a water-containing formulation and an organic solvent; 2) a step of adding an inorganic salt or an organic salt to the liquid prepared in step 1 and separating it into an aqueous phase and an organic phase; and 3) a step of separating the organic phase in step 2 and quantitatively analyzing the ethanol contained in the organic phase by gas chromatography analysis.