Navigation Links
Caffeine Content In Beverages To Be Identified By Home Test Kit

A new home testing kit to test the caffeine content of beverages such as tea, coffee and soda may be commercially available//. You can now clear your suspicion about the decaf label that claims reduced or nil caffeine content. The home based kit, produced by researchers at Washington University School of Medicine, is based on a dipstick analysis. The results of the present study have been published in the journal, Analytical Chemistry, a publication of the American Chemical Society.

‘We envisioned that a simple method to measure caffeine, even in hot beverages, such as coffee, would be of value to individuals and institutions wanting to verify the absence of caffeine,’ says study leader Jack H. Ladenson, Ph.D., a chemist at the university. ‘This will greatly assist individuals who wish to avoid caffeine.’

Ladenson hopes to develop a simple caffeine test in which test strips that are treated with a specific antibody will react by changing color in the presence of caffeine.

The new test will be designed to be qualitative only: It allows a person to quickly determine whether caffeine is present, but does not indicate the exact amount or concentration of caffeine. In preliminary tests using coffee and cola, an experimental version of the test effectively distinguished caffeinated versions of these products from their decaf counterparts, Ladenson says.

The researcher adds that he does not know when the test will be available to consumers or at what price. Further refinements are ongoing, he says.

Many consumers are increasingly trying to avoid caffeine due to unwanted health effects, including insomnia and irritability. Several studies have linked an increase in caffeine consumption with a higher risk of miscarriage among pregnant women. For years, the U.S. Food and Drug Administration has specifically advised pregnant women to avoid or limit their intake of caffeine.

But the caffeine content of foods and bevera ges can be difficult for consumers to determine. Products do not always indicate whether they contain caffeine, and the caffeine content of similar food products can vary widely depending on the manufacturer. Even drinks that are labeled ‘decaf’ can contain detectable amounts of caffeine, experts say.

Current tests to detect caffeine use sophisticated laboratory methods, including spectroscopy and chromatography, none of which are applicable to home use, Ladenson and his associates say. While caffeine-specific antibodies are commercially available, these antibodies are destroyed at high temperatures, like those of hot beverages, and consequently are not practical for use in home tests, the scientists say.

To develop the new immunoassay test, Ladenson and his associates obtained an unusual antibody — derived from the blood of llamas — that is resistant to high temperatures due to its unusually stable structure. They obtained the antibodies by repeatedly injecting the animals with caffeine to illicit an immune response to the drug. The researchers then cloned the caffeine-specific antibody and combined it with other chemicals to facilitate caffeine detection.

In early laboratory studies, the antibody mixture was used to measure the presence of caffeine in both caffeinated and decaf versions of coffee and cola. In general, the researchers found that test results were comparable to those of conventional chromatography tests and that the caffeine content of these beverages was accurately labeled.

The antibodies worked equally well in both hot and cold beverages and did not appear to show any false readings caused by structures that are similar to caffeine, Ladenson says. He has filed patents related to the research.


Related medicine news :

1. Caffeine keeps soldiers sharp
2. Caffeine can induce epilepsy in newborns
3. Caffeine reduces infant blood flow
4. Caffeine fights Gallstones
5. Caffeine is not the only culprit in coffee!
6. Caffeine Found To Worsen Diabetes
7. Caffeine Intake May reduce Insulin Sensitivity
8. Caffeine can interfere with PET scan results
9. The Link Between Caffeine Drinks And Obesity
10. Caffeine Boosts Memory, Improves Attention Span
11. Caffeine pill to keep soldiers alert in the field
Post Your Comments:

(Date:10/13/2017)... ... October 13, 2017 , ... Ellevate Network, the leading ... to advocate for action towards gender equality at their inaugural Summit in New York ... globe, and reached a social audience of over 3 million. To watch the Mobilize ...
(Date:10/13/2017)... , ... October 13, 2017 , ... ... be giving viewers the lowdown on sciatica in a new episode of "Success ... focuses on current events and innovation and investigates each subject in-depth with passion ...
(Date:10/13/2017)... ... October 13, 2017 , ... “America On The Brink”: the Christian ... On The Brink” is the creation of published author, William Nowers. Captain Nowers ... a WWII veteran, he spent thirty years in the Navy. Following his career ...
(Date:10/12/2017)... ... October 12, 2017 , ... Planet Fitness, one of the largest ... its plans to open a flagship location in Covington, LA at 401 N. U.S. ... Go store next to Office Depot in the Holiday Square shopping center. Its location ...
(Date:10/12/2017)... ... October 12, 2017 , ... The American College of Medical Informatics (ACMI) will ... during the Opening Session of AMIA’s Annual Symposium in Washington, D.C. AMIA’s Annual ... F. Collen, a pioneer in the field of medical informatics, this prestigious award is ...
Breaking Medicine News(10 mins):
(Date:10/4/2017)... South Korea , Oct. 4, 2017  South ... its next-generation CPR training aide "cprCUBE" on Kickstarter. The ... chest compression during cardiac arrests with better efficiency compared ... It also offers real-time feedback on efficacy of the ... The crowdfunding campaign has a goal to raise $5,000. ...
(Date:10/4/2017)... Oct. 4, 2017 OBP Medical ... illuminating medical devices, today announced regulatory approval from ... Agency (or Agência Nacional de Vigilância Sanitária (ANVISA)) ... cordless surgical retractor with integrated LED light source ... illumination and exposure of a tissue pocket or ...
(Date:10/2/2017)... INDIANAPOLIS , Oct. 2, 2017  Eli Lilly ... its financial results for the third quarter of 2017 ... a conference call on that day with the investment ... performance. The conference call will begin at ... public can access a live webcast of the conference ...
Breaking Medicine Technology: