Featured Research

from universities, journals, and other organizations

Fingerprinting Fake Coffee

Date:
September 4, 2007
Source:
American Chemical Society
Summary:
With prices of gourmet coffee approaching sticker-shock levels, scientists in Illinois are reporting development of a method to "fingerprint" coffee to detect when corn has been mixed in to short-change customers. Researchers point out that such adulteration of Brazilian coffee is among the most serious problems affecting coffee quality -- with cereal grains, coffee twigs, and brown sugar sometimes mixed into the genuine article. Their research focuses on detecting corn, probably the most widely used adulterant.

New method distinguishes real java from the 'jive' stuff.
Credit: American Chemical Society

With prices of gourmet coffee approaching sticker-shock levels, scientists in Illinois are reporting development of a method to "fingerprint" coffee to detect when corn has been mixed in to short-change customers.

Gulab Jham and colleagues point out that such adulteration of Brazilian coffee is among the most serious problems affecting coffee quality -- with cereal grains, coffee twigs, and brown sugar sometimes mixed into the genuine article. Their research focuses on detecting corn, probably the most widely used adulterant.

The study describes development and use on six popular coffee brands of a method for analyzing one form of vitamin E in Brazilian coffee. Because roasted corn samples have high concentrations of vitamin E, it serves as a fingerprint for adulteration with corn. In laboratory tests they found that one brand of Brazilian coffee contained almost 9 percent corn. Although noting that their results are preliminary, the scientists say their new method appears to be "a significant improvement" over existing tests to detect corn adulteration.

"Gamma-Tocopherol as a Marker of Brazilian Coffee (Coffea arabica L.) Adulteration by Corn," Journal of Agricultural and Food Chemistry, August 8, 2007.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Cite This Page:

American Chemical Society. "Fingerprinting Fake Coffee." ScienceDaily. ScienceDaily, 4 September 2007. <www.sciencedaily.com/releases/2007/09/070903094325.htm>.
American Chemical Society. (2007, September 4). Fingerprinting Fake Coffee. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2007/09/070903094325.htm
American Chemical Society. "Fingerprinting Fake Coffee." ScienceDaily. www.sciencedaily.com/releases/2007/09/070903094325.htm (accessed July 25, 2014).

Share This




More Plants & Animals News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Boy Attacked by Shark in Florida

Boy Attacked by Shark in Florida

Reuters - US Online Video (July 24, 2014) — An 8-year-old boy is bitten in the leg by a shark while vacationing at a Florida beach. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Goma Cheese Brings Whiff of New Hope to DRC

Goma Cheese Brings Whiff of New Hope to DRC

Reuters - Business Video Online (July 24, 2014) — The eastern region of the Democratic Republic of Congo, mainly known for conflict and instability, is an unlikely place for the production of fine cheese. But a farm in the village of Masisi, in North Kivu is slowly transforming perceptions of the area. Known simply as Goma cheese, the Congolese version of Dutch gouda has gained popularity through out the region. Ciara Sutton reports. Video provided by Reuters
Powered by NewsLook.com
Dogs Appear To Become Jealous Of Owners' Attention

Dogs Appear To Become Jealous Of Owners' Attention

Newsy (July 23, 2014) — A U.C. San Diego researcher says jealousy isn't just a human trait, and dogs aren't the best at sharing the attention of humans with other dogs. Video provided by Newsy
Powered by NewsLook.com
Professor Creates Site Revealing Where People's Cats Live

Professor Creates Site Revealing Where People's Cats Live

Newsy (July 23, 2014) — ​It's called I Know Where Your Cat Lives, and you can keep hitting the "Random Cat" button to find more real cats all over the world. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

    Health News

      Environment News

        Technology News



          Save/Print:
          Share:  

          Free Subscriptions


          Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

          Get Social & Mobile


          Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

          Have Feedback?


          Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
          Mobile iPhone Android Web
          Follow Facebook Twitter Google+
          Subscribe RSS Feeds Email Newsletters
          Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins