Navigation Links
Drinking green tea with starchy food may help lower blood sugar spikes
Date:11/9/2012

UNIVERSITY PARK, Pa. -- An ingredient in green tea that helps reduce blood sugar spikes in mice may lead to new diet strategies for people, according to Penn State food scientists.

Mice fed an antioxidant found in green tea -- epigallocatechin-3-gallate, or EGCG -- and corn starch had a significant reduction in increase in their blood sugar -- blood glucose -- levels compared to mice that were not fed the compound, according to Joshua Lambert, assistant professor of food science in agricultural sciences.

"The spike in blood glucose level is about 50 percent lower than the increase in the blood glucose level of mice that were not fed EGCG," Lambert said.

The dose of EGCG fed to the mice was equivalent to about one and a half cups of green tea for a human.

Lambert, who worked with Sarah C. Forester, postdoctoral fellow, and Yeyi Gu, graduate student, both in food science, said EGCG was most effective when the compound was fed to the mice simultaneously with corn starch. For humans, this may mean that green tea could help them control the typical blood sugar increases that are brought on when they eat starchy foods, like breads and bagels that are often a part of typical breakfasts.

"If what you are eating with your tea has starch in it then you might see that beneficial effect," Lambert said. "So, for example, if you have green tea with your bagel for breakfast, it may reduce the spike in blood glucose levels that you would normally get from that food."

The EGCG had no significant effect on blood sugar spikes in mice that were fed glucose or maltose, according to the researchers who released their findings in the online version of Molecular Nutrition and Food Research. Lambert said that the reason blood sugar spikes are reduced when the mice ate starch, but not these sugars, may be related to the way the body converts starch into sugar.

An enzyme called alpha-amylase that is produced in both the mouth and by the pancreas helps break down starch into maltose and glucose. EGCG may inhibit the enzymes ability to break down the starch, the researchers indicated, since they also found that EGCG reduced the activity of alpha amylase in the pancreas by 34 percent.

If the mechanism holds in humans, this may mean that people who want to limit the blood sugar spike should skip adding sugar to their cup of green tea.

"That may mean that if you add sugar into your green tea, that might negate the effect that the green tea will have on limiting the rise in blood glucose level," Lambert said.

Lambert added that the green tea and the starch would need to be consumed simultaneously. For example, drinking a cup of tea well after eating a piece of toast would probably not change the blood sugar spike.

For the study, researchers separated mice into several groups based on body weight. After a fasting period, the mice were given common corn starch, maltose, or sucrose. One group of mice received EGCG along with the feed, while a control group was not fed the compound.

The researchers then tested the blood sugar levels of both groups.

Lambert said the researchers next step is to test the compound on people.

"The relatively low effective dose of EGCG makes a compelling case for studies in human subjects," the researchers said.


'/>"/>

Contact: Matthew Swayne
mls29@psu.edu
814-865-9481
Penn State
Source:Eurekalert

Related medicine news :

1. Impulsive College Women at Risk of Drinking Problems: Study
2. Light drinking may relate to increase in risk for certain cancers
3. Quitting Drinking May Help Alcoholics Bone Loss
4. New analysis of drinking water-related gastrointestinal illness
5. Heavy Drinking Linked to Earlier Stroke
6. Many Teens Drinking, Taking Drugs During School: Survey
7. Tying the Knot Ups Womens Drinking Rate, Lowers Mens
8. Binge drinking college students are happier than their non-binge drinking peers
9. Drinking in Pregnancy Shows Up in Childs Growth: Study
10. Brain Scans May Spot Teens at Risk for Problem Drinking
11. Leveraging bacteria in drinking water to benefit consumers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/21/2017)... ... July 21, 2017 , ... Hospital M&A activity slowed in the ... number of hospital acquisitions rose to 23 in the second quarter, up 15% from ... from the 20 announced deals in the year-ago second quarter. Only four of the ...
(Date:7/21/2017)... ... ... The House of Yahweh in Abilene, Texas, has written a new post this week that ... to be more open about positive changes. Yisrayl says the use of force is not ... positive way to solve all; yes, all issues, and he is ready to share this ...
(Date:7/21/2017)... ... July 21, 2017 , ... “Kids aren't born knowing ... tie their shoes,” says Suzanne Tucker, Founder of St. Louis-based positive education company Generation ... launches on Kickstarter on Monday, July 21st. , The kit uses colorful, engaging ...
(Date:7/21/2017)... TORONTO, ONTARIO, CANADA (PRWEB) , ... July 21, ... ... with over 80% follow-up at 10 years, researchers from the Multicenter Orthopaedics Outcome ... knee-related quality of life a decade after surgery, though activity levels decline over ...
(Date:7/20/2017)... ... July 20, 2017 , ... TransPixel Volume 2 is ... clips in the FCPX timeline. This effect isolates horizontal and vertical lines of pixels ... contains either a rotating or flipping animation and can be changed using a drop-down ...
Breaking Medicine News(10 mins):
(Date:7/5/2017)... , July 5, 2017 Oramed ... www.oramed.com ), a clinical-stage pharmaceutical company focused on ... it has received approval from the Israel Securities Authority to ... (TASE). Oramed common stock will commence trading on the TASE ... the current market capitalization of the Company, it is expected ...
(Date:7/1/2017)... WARSAW, Ind. , June 30, 2017 Zimmer ... second quarter sales and earnings conference call will be broadcast ... 8 a.m. Eastern Time.  A news release detailing the quarterly ... the morning of the conference call. The live ... website at http://investor.zimmerbiomet.com . It will be archived for ...
(Date:6/30/2017)... , June 29, 2017  Axium Pharmaceuticals Inc. is a pharmaceutical ... novel formulations and alternative dosage forms of existing biologically active ... ... on our waterless self-nano emulsifying formula, which is designed to ... We believe the spray will provide fast onset of action ...
Breaking Medicine Technology: