Bottled Tea Has Fewer Antioxidants Than Brewed
August 24, 2010 7:34 AM
comment(s) - last by
(Source: Sixth Seal)
Consumers would have to drink 20 bottles of store-bought tea to equal one fresh-brewed cup
Tea is known for its abundant health advantages. One advantage is that most contain polyphenols, which is a type of antioxidant that can clean up a cell's inner functions, making it easier for our bodies to ward off certain
types of diseases
. In fact, as much as 30 percent of a freshly picked tea leaf is made up of polyphenols. But recently, scientists have revealed that most
bottled, store-bought teas
don't contain the amount of polyphenols as advertised.
Shiming Li, Ph.D. and Professor Chi-Tang Ho, along with a team of scientists, announced this new finding at the 240th National Meeting of the American Chemical Society (ACS). They measured the polyphenol levels of six different store-bought, bottled tea brands using high-performance liquid chromatography and found that they contained extremely
low levels of polyphenol
in comparison with fresh-brewed tea (with a tea bag, not bottled). The six brands were not named in reports.
In fact, according to their findings, three of the bottled tea brands contained "virtually no" antioxidants while the other three had such small amounts that they wouldn't be beneficial to the consumer's health anyway. Also, the amount of sugar in each bottle of tea
contains so much sugar that it eclipses the small amount of polyphenol, disallowing any chance of the antioxidant positively affecting someone's health.
"Consumers understand very well the concept of the health benefits from drinking tea or consuming other tea products," said Li. "However, there is a huge gap between the perception that tea consumption is healthy and the actual amount of the healthful nutrients - polyphenols - found in bottled tea beverages. Our analysis of tea beverages found that the polyphenol content is extremely low."
The six different teas that this team of scientists measured had 81, 43, 40, 13, 4 and 3 milligrams (mg.) of polyphenols "per 16-ounce bottle." This is very low, considering
black or green tea can have anywhere from 50-150 mg. A normal tea bag can have as much as 175 mg. of polyphenols per bag, but after being dunked in hot water, some of the antioxidant degrades.
According to the research, these bottled tea beverages account for $1 billion in sales annually within the United States. Also, they reported that consumers would have to drink about 20 bottles of the store-bought tea brands which contain the lowest polyphenol levels in order to receive any health benefits.
This article is over a month old, voting and posting comments is disabled
RE: How about a title that actually works.
8/26/2010 11:12:41 AM
What about instant tea that comes in a powder?
Looks like you are ready to become a DailyTech Blogger. If you had used a search engine, such as Google or bing, you would have quickly discovered that nstant tea is a form of tea that is derived from
tea. Oh, there's that word again!.
"Intel is investing heavily (think gazillions of dollars and bazillions of engineering man hours) in resources to create an Intel host controllers spec in order to speed time to market of the USB 3.0 technology." -- Intel blogger Nick Knupffer
MIT's DNA Wrapped Nanotubes Look to Fight Disease
December 15, 2008, 2:35 PM
Robot Shopping a Reality in Japan
July 22, 2008, 8:03 AM
Latest By Tiffany Kaiser
Google Testing Smart Thermostat in St. Louis
December 17, 2013, 11:43 AM
Microsoft Wins "Synchronized Calendar" Patent Case Against Motorola Mobility
December 17, 2013, 11:23 AM
San Francisco's Market Street Receives Free Outdoor Wi-Fi
December 17, 2013, 11:14 AM
President Barack Obama Meeting with Tech Leaders to Discuss HealthCare.gov, NSA
December 17, 2013, 10:59 AM
NSA Debates Granting Snowden Amnesty if He Keeps His Mouth Shut, White House Says "Nope"
December 16, 2013, 1:17 PM
Quick Note: E-Waste to Increase by One-Third by 2017, U.S. Leads in E-Waste Output
December 16, 2013, 12:20 PM
GM Could Release New EV, Updated Chevrolet Volt in 2016
December 16, 2013, 11:30 AM
Google Removes "App Ops" Privacy Control Feature from Android 4.4.2
December 16, 2013, 9:29 AM
Despite a Rumored Exit to Microsoft, Steve Mollenkopf is Qualcomm's New CEO
December 13, 2013, 1:00 PM
Report: Google May Design its Own ARM-Based Server Processors
December 13, 2013, 12:25 PM
Microsoft Retiree Tapped as Struggling Obamacare Site's Top Repairman
December 17, 2013, 7:35 PM
China's Moon Rover Lands Safe and Sound, Starts Snapping Pics
December 16, 2013, 1:22 PM
Asiana Airlines Pilot in SFO Crash was Unfamiliar with Plane's Computer Systems
December 12, 2013, 11:44 AM
Amazon Could Save Big on Order Fulfillment with Warehouse Robots
December 10, 2013, 10:55 AM
U.S. Navy Fires "XFC" Drone from Underwater Submarine
December 6, 2013, 2:35 PM
Experts: Masturbation Prevents Cancer, Diabetes, Insomnia, and Depression
December 6, 2013, 2:01 PM
Most Popular Articles
Report: Windows 8.2 Revives Start Menu, Runs Metro Apps in Desktop Mode
December 10, 2013, 2:56 PM
Chinese Media Puts Positive Spin on Its Smog Problem, Touts 5 "Benefits"
December 11, 2013, 12:39 PM
China's Lunar Rover Enters Orbit, Prepares for Historic Sat. Landing
December 13, 2013, 5:00 PM
The History of Normandy: How Nokia Plotted a Low-End Android Line
December 11, 2013, 8:12 PM
Metro-Enabled Firefox Browser Expected to Land After Two Years of Work
December 12, 2013, 5:21 PM
Latest Blog Posts
Justice Leaks Details of Next HTC One Two Flagship Phone
Dec 5, 2013, 4:04 PM
Global Cyber Espionage Concerns Reveal Growing Cyber Armies
Nov 29, 2013, 11:04 AM
Is The Period Becoming an Expression of Anger?
Nov 26, 2013, 2:02 PM
NSA and Congress -- You Will Never Kill the Constitution, It's an Idea
Nov 10, 2013, 2:00 PM
AT&T Explores $100B+ USD Deal to Acquire Vodafone's European Operations
Nov 4, 2013, 7:34 AM
More Blog Posts
Copyright 2013 DailyTech LLC. -
Terms, Conditions & Privacy Information