Navigation Links
Beer's bitter compounds could help brew new medicines
Date:1/29/2013

Researchers employing a century-old observational technique have determined the precise configuration of humulones, substances derived from hops that give beer its distinctive flavor.

That might not sound like a big deal to the average brewmaster, but the findings overturn results reported in scientific literature in the last 40 years and could lead to new pharmaceuticals to treat diabetes, some types of cancer and other maladies.

"Now that we have the right results, what happens to the bitter hops in the beer-brewing process makes a lot more sense," said Werner Kaminsky, a University of Washington research associate professor of chemistry.

Kaminsky is the lead author of a paper describing the findings, published this month in the journal Angewandte Chemie International Edition.

There is documentation that beer and its bittering acids, in moderation, have beneficial effects on diabetes, some forms of cancer, inflammation and perhaps even weight loss.

Kaminsky used a process called X-ray crystallography to figure out the exact structure of those acids, humulone molecules and some of their derivatives, produced from hops in the brewing process. That structure is important to researchers looking for ways to incorporate those substances, and their health effects, into new pharmaceuticals.

Humulone molecules are rearranged during the brewing process to contain a ring with five carbon atoms instead of six. At the end of the process two side groups are formed that can be configured in four different ways both groups can be above the ring or below, or they can be on opposite sides.

Which of the forms the molecule takes determines its "handedness," Kaminsky said, and that is important for understanding how a particular humulone will react with another substance. If they are paired correctly, they will fit together like a nut and bolt.

If paired incorrectly, they might not fit together at all or it could be like placing a right hand into a left-handed glove. That could produce disastrous results in pharmaceuticals.

Kaminsky cited thalidomide, which has a number of safe uses but was famously used to treat morning sickness in pregnant women in the late 1950s and early 1960s before it was discovered to cause birth defects. Molecule "handedness" in one form of the drug was responsible for the birth defects, while the orientation of molecules in another form did not appear to have the negative effects.

To determine the configuration of humulones formed in the brewing process, coauthors Jan Urban, Clinton Dahlberg and Brian Carroll of KinDex Therapeutics, a Seattle pharmaceutical firm that funded the research, recovered acids from the brewing process and purified them.

They converted the humulones to salt crystals and sent them to Kaminsky, who used X-ray crystallography a technique developed in the early 20th century to determine the exact configuration of the molecules.

"Now that we know which hand belongs to which molecule, we can determine which molecule goes to which bitterness taste in beer," Kaminsky said.

The authors point out that while "excessive beer consumption cannot be recommended to propagate good health, isolated humulones and their derivatives can be prescribed with documented health benefits."

Some of the compounds have been shown to affect specific illnesses, Kaminsky said, while some with a slight difference in the arrangement of carbon atoms have been ineffective.

The new research sets the stage for finding which of those humulones might be useful in new compounds to be used as medical treatments.


'/>"/>
Contact: Vince Stricherz
vinces@uw.edu
206-543-2580
University of Washington
Source:Eurekalert  

Related biology news :

1. Bitter tastes quickly turn milk chocolate fans sour
2. Hearty organisms discovered in bitter-cold Antarctic brine
3. Biosensor illuminates compounds to aid fight against TB
4. New screening technique yields elusive compounds to block immune-regulating enzyme
5. Sulphur and iron compounds common in old shipwrecks
6. Heparin-like compounds inhibit breast cancer metastasis to bone
7. Nuisance seaweed found to produce compounds with biomedical potential
8. New drug-screening method yields long-sought anti-HIV compounds
9. Nonstoichiometric Compounds V - An ECI Conference Series
10. Poisoning from industrial compounds can cause similar effects to ALS
11. University of Albertas designer compounds inhibit prion infection
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Beer's bitter compounds could help brew new medicines
(Date:4/17/2017)... 2017 NXT-ID, Inc. (NASDAQ: NXTD ) ... of its 2016 Annual Report on Form 10-K on Thursday April ... ... in the Investor Relations section of the Company,s website at ... at http://www.sec.gov . 2016 Year Highlights: ...
(Date:4/11/2017)... 11, 2017 No two people are ... the New York University Tandon School of Engineering ... found that partial similarities between prints are common ... mobile phones and other electronic devices can be ... vulnerability lies in the fact that fingerprint-based authentication ...
(Date:4/5/2017)... 4, 2017 KEY FINDINGS The ... at a CAGR of 25.76% during the forecast period ... primary factor for the growth of the stem cell ... MARKET INSIGHTS The global stem cell market ... and geography. The stem cell market of the product ...
Breaking Biology News(10 mins):
(Date:8/17/2017)... ... August 17, 2017 , ... CNA Finance Chief ... provided a research update on Aytu Bioscience and cited promising increases in the ... Soulstring, prescription rates for Natesto® have more than doubled since March of this ...
(Date:8/16/2017)... King of Prussia, PA (PRWEB) , ... August 16, 2017 , ... ... leaders will be taking part in sessions at the ISPE Annual Meeting and ... the Marriott Marquis San Diego Marina. The event’s theme is “Driving innovation to advance ...
(Date:8/16/2017)... ... August 16, 2017 , ... Recent studies show ... Many treatments for specific cancers, such as breast, prostate, or lung, target vital ... deprivation therapy for advanced prostate cancer. , This therapy limits the production ...
(Date:8/16/2017)... , ... August 16, 2017 , ... ... microbe delivery system, announced it has secured $2M in funding from an impressive ... Angels, Carmen Innovations, and SVG Thrive Fund. With this investment, 3Bar is broadening ...
Breaking Biology Technology: