Navigation Links
How strong is your booze?
Date:3/22/2010

Both legitimate brewers and distillers - and authorities on the track of illicit alcohol from home stills - will soon have a helping hand. Measurement experts have unveiled a portable device to determine the strength of alcoholic drinks quickly and easily, almost anywhere. Published in the open access Chemistry Central Journal, the researchers show that their technique is just as accurate, and more sophisticated, than widely used lab-based methods.

Along with his colleagues, Dirk Lachenmeier of testing agency Chemisches und Veterinruntersuchungsamt (CVUA) in Karlsruhe, Germany, decided to use a simple, patented multiple-beam infrared sensor combined with a flow-through cell for automated alcohol analysis. His team tested the device, which is portable to allow for on-site measurements, on a range of alcoholic samples.

Their tests on 260 different alcoholic drinks showed that the flow-through infrared device was much easier to handle than typical reference procedures, while time-consuming sample preparation steps such as distillation weren't necessary. Their sensor was equal to or better than current densimetric or Fourier transform infrared (FTIR) methods: repeatability, as determined in six different wine samples, was 0.05% vol and the relative standard deviation was below 0.2%. They also tested wines partway through the fermentation process, and unrecorded (non-commercial or illicit) alcohol samples, with good results. The test took less than a minute per drink.

"The device gives the opportunity for mobile on-site control in the context of labeling control of wine, beer and spirits, the process monitoring of fermentations, or the evaluation of unrecorded alcohols," says Lachenmeier. He adds that the device can also be used easily in developing country settings, with results that compare well to a more sophisticated lab set up.

Only beers and other sparkling drinks need more time-consuming preparation, to first remove the fizz, which can interfere with measurements.

The authors say that not only does unrecorded alcohol account for a quarter of all alcohol consumed worldwide, but in most cases, "not even the most basic chemical composition such as alcoholic strength is known for these beverages."

Ever since French chemist Gay-Lussac's work on alcohol-water mixtures, scientists have measured alcoholic strength by volume (% vol) using distillation and then a pycnometer to measure the liquid's density. Infrared spectroscopy is a more recent, popular method, but typically requires expensive equipment, and complicated calibration.


'/>"/>

Contact: Charlotte Webber
charlotte.webber@biomedcentral.com
44-203-192-2129
BioMed Central
Source:Eurekalert

Related biology technology :

1. STALLERGENES : Strong Business Growth: +17% and Earnings Per Share up 30%
2. Dawson James Securities Initiates Research Coverage on CryoCor, Inc. (Nasdaq: CRYO) with a Strong Buy Rating and $6.00 Target Price
3. Strong Demand Pushes up Both Prices and Sales Volumes for Dragons Main Products
4. U-M research: New plastic is strong as steel, transparent
5. Nobel Award in Medicine Holds Strong Messsage for Animal Activists
6. Monsanto Sees Record Sales in Fiscal Year 2007; Seeds and Traits Business Contributes to Strong Fourth Quarter and Year-End Results
7. Gen-Probe Reports Strong Financial Results for Third Quarter 2007, Raises Full-Year Guidance for Earnings Per Share and Total Revenues
8. Cephalon Announces Strong Third Quarter Financial Results
9. Edwards Lifesciences Forecasts Strong Growth in 2008
10. Genoptix Reports Strong Financial Results For Third Quarter 2007
11. STALLERGENES: 2007: A Further Year of Strong Growth: Up 16%
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/25/2017)... , ... September 25, 2017 , ... Throughout the month ... Project Verified label at over 13,000 stores nationwide, and industry expert David Carter is ... Now that Congress has passed the GMO labeling bill, demand for non-GMO foods and ...
(Date:9/25/2017)... , ... September 25, 2017 , ... ... by a third-party auditor, MindFlow Design has been found to provide product ... start-ups or Fortune 500 companies, our clients have a lot at ...
(Date:9/22/2017)... (PRWEB) , ... September 22, 2017 , ... ... colleague Dr. Justin Zalewsky in offering LANAP® and LAPIP™ laser treatments. Drs. Hoge ... True Regeneration™ to patients, a minimally invasive and less painful option that produces ...
(Date:9/21/2017)... ... , ... Dr. Greg Leyer, Chief Scientific Officer of UAS Labs, will be ... at 12:10pm in the Probiotics Resource Center, Mandalay Bay Expo Hall. , “I ... probiotics have shown impressive data in areas outside the gut including heart health, Vitamin ...
Breaking Biology Technology:
(Date:6/30/2017)... 2017 Today, American Trucking Associations announced ... face and eye tracking software, became the newest ... "Artificial intelligence and advanced sensing ... a driver,s attentiveness levels while on the road.  ... detect fatigue and prevent potential accidents, which could ...
(Date:5/16/2017)... TEANECK, N.J. , May 16, 2017  Veratad ... leading provider of online age and identity verification solutions, ... the K(NO)W Identity Conference 2017, May 15 thru May ... Ronald Regan Building and International Trade Center. ... across the globe and in today,s quickly evolving digital ...
(Date:4/19/2017)... The global military biometrics market ... by the presence of several large global players. The ... major players - 3M Cogent, NEC Corporation, M2SYS Technology, ... 61% of the global military biometric market in 2016. ... military biometrics market boast global presence, which has catapulted ...
Breaking Biology News(10 mins):