Featured Research

from universities, journals, and other organizations

The Powers Of Peanut Flours

Date:
January 25, 2007
Source:
USDA/Agricultural Research Service
Summary:
New Agricultural Research Service (ARS) findings about the thickening capacity of various forms of peanut flour will help scientists improve food textures.

Ounce-per-ounce, low-fat, light-roasted peanut flours were found to promote more viscosity—or to thicken more effectively—than other peanut flours when dispersed in water and heated under controlled conditions.
Credit: Photo by Jack Dykinga

New Agricultural Research Service (ARS) findings about the thickening capacity of various forms of peanut flour will help scientists improve food textures.

Peanut flour is a dry powder formed after the partial extraction of oil from the roasted peanut seed. It is used to add flavor and protein to processed baked goods, nutrition bars and snacks, as well as to marinades, sauces and dressings. Worldwide, peanut flours have been limited to use by industrial food processors as a major food ingredient.

The study was conducted by food technologist Jack P. Davis and colleagues in the ARS Market Quality and Handling Research Unit, Raleigh, N.C. ARS is the U.S. Department of Agriculture's chief scientific research agency.

To gauge how effectively different commercial peanut flours thicken during heat processing, Davis used different types of rheological tests. Rheological measurements involve testing the flow behavior and form changes of a material and have been shown to relate to the human perception of texture.

Generally, peanut flours are offered at fat levels of 12 or 28 percent, and either as light, medium or dark roasts. Davis found that regardless of roast color, lower-fat peanut flours thicken more effectively than higher-fat ones.

While peanuts are about 25 percent protein, peanut flour is about 50 percent protein. That's because the process of mechanically removing fatty oil from roasted peanuts enriches the levels of the remaining peanut components. The resulting flour is naturally low in fat, high in protein and relatively low in carbohydrates.

Ounce-per-ounce, low-fat, light-roasted peanut flours were found to promote more viscosity--or to thicken more effectively--than other peanut flours when dispersed in water and heated under controlled conditions.

Davis and ARS research leader Timothy Sanders will report the findings in an upcoming issue of The Journal of Texture Studies. That data and those from future studies will help food processors choose the best heat treatments, based on a particular peanut flour's thickening properties.


Story Source:

The above story is based on materials provided by USDA/Agricultural Research Service. Note: Materials may be edited for content and length.


Cite This Page:

USDA/Agricultural Research Service. "The Powers Of Peanut Flours." ScienceDaily. ScienceDaily, 25 January 2007. <www.sciencedaily.com/releases/2007/01/070125113734.htm>.
USDA/Agricultural Research Service. (2007, January 25). The Powers Of Peanut Flours. ScienceDaily. Retrieved July 28, 2014 from www.sciencedaily.com/releases/2007/01/070125113734.htm
USDA/Agricultural Research Service. "The Powers Of Peanut Flours." ScienceDaily. www.sciencedaily.com/releases/2007/01/070125113734.htm (accessed July 28, 2014).

Share This




More Plants & Animals News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Sea Turtle Hatchlings Emerge from Nest

Raw: Sea Turtle Hatchlings Emerge from Nest

AP (July 27, 2014) A live-streaming webcam catches loggerhead sea turtle hatchlings emerging from a nest in the Florida Keys. (July 27) Video provided by AP
Powered by NewsLook.com
Trees Could Save More Than 850 Lives Each Year

Trees Could Save More Than 850 Lives Each Year

Newsy (July 27, 2014) A national study conducted by the USDA Forest Service found that trees collectively save more than 850 lives on an annual basis. Video provided by Newsy
Powered by NewsLook.com
What's To Blame For Worst Ebola Outbreak In History?

What's To Blame For Worst Ebola Outbreak In History?

Newsy (July 27, 2014) A U.S. doctor has tested positive for the deadly Ebola virus, as the worst-ever outbreak continues to grow. Video provided by Newsy
Powered by NewsLook.com
The New York Times Backs Pot Legalization

The New York Times Backs Pot Legalization

Newsy (July 27, 2014) The New York Times has officially endorsed the legalization of marijuana, but why now, and to what end? 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