Featured Research

from universities, journals, and other organizations

Researchers Improve Soy Processing By Boosting Protein And Sugar Yields

Date:
February 16, 2007
Source:
Iowa State University
Summary:
In Iowa State University laboratory tests, adding ultrasonic treatment to soy processing has increased the release of soy proteins by 46 percent. The treatment has also boosted sugar yields by 50 percent.

Samir Khanal, foreground, and Bishnu Karki work with an ultrasonic machine in an Iowa State University laboratory. They're applying ultrasonic technology to the soy processing industry. (Photo by Bob Elbert)
Credit: Photo by Bob Elbert

Graduate student Bishnu Karki turned on an ultrasonic machine in an Iowa State University laboratory. With a loud screech, the machine's high-frequency sound waves churned a mixture of soy flakes and cold water. And that churning could be a major boost to soy processors and the food industry.

Related Articles


Adding ultrasonic pretreatment to soy processing boosts and improves the yield of protein that can be added to foods, said Samir Khanal, an Iowa State research assistant professor of civil, construction and environmental engineering. In Iowa State laboratory tests, exposing ground and defatted soy flakes to ultrasonics has increased the release of soy proteins by 46 percent.

Khanal said the ultrasonic treatment also breaks some of the bonds that tie sugars to the soy proteins. Separating the sugars from the proteins improves the quality of the proteins. It also boosts the sugar content of the soy whey that's left after processing. Ultrasonic treatment boosted sugar yields by 50 percent.

The low-cost, sugar-enriched whey can replace an expensive compound used to grow lactic acid bacteria, Khanal said. The bacteria produce nisin, a valuable natural food preservative that's also used in cosmetic and health care products such as mouthwash and toothpaste.

"Our preliminary economic analysis showed that the proposed technology could generate revenue up to $230 million per year from a typical plant producing 400 million pounds of soy protein isolate," says a summary of the research project. "This is a major breakthrough in the soy processing industry."

Khanal leads a research team that includes Hans van Leeuwen, an Iowa State professor of civil, construction and environmental engineering; David Grewell, an Iowa State assistant professor of agricultural and biosystems engineering; Stephanie Jung, an Iowa State assistant professor of food science and human nutrition; and Buddhi Lamsal, a senior scientist at Kansas State University in Manhattan. Larry Johnson, the director of Iowa State's Center for Crops Utilization Research, and Tony Pometto, an Iowa State professor of food science and human nutrition, are assisting the project. Iowa State graduate students Bishnu Karki, who's studying environmental science, and Debjani Mitra, who's studying biorenewable resources and technology, are also working on the research project.

The research is supported by a grant of $81,977 from the Grow Iowa Values Fund, a state economic development program. Cargill and other major food processors are supporting the research project with materials and supplies. And the Iowa Biotechnology Byproducts Consortium is supporting the nisin portion of the project with a grant of $155,711.

Khanal said the technology has boosted protein and sugar release in batch-by-batch lab tests. The researchers will now try lab tests to see how it works in the same kind of continuously flowing stream that would be used in a soy processing plant.

The researchers are optimistic the technology can be effective and efficient in a full-size soy processing plant. Van Leeuwen said the ultrasonic treatments only require a few seconds and can be done in a pipeline connecting a plant's soy processing units. He also said the capital costs and power requirements for ultrasonics are small.

Yes, Khanal said, "I think this is commercially viable."


Story Source:

The above story is based on materials provided by Iowa State University. Note: Materials may be edited for content and length.


Cite This Page:

Iowa State University. "Researchers Improve Soy Processing By Boosting Protein And Sugar Yields." ScienceDaily. ScienceDaily, 16 February 2007. <www.sciencedaily.com/releases/2007/02/070215133344.htm>.
Iowa State University. (2007, February 16). Researchers Improve Soy Processing By Boosting Protein And Sugar Yields. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2007/02/070215133344.htm
Iowa State University. "Researchers Improve Soy Processing By Boosting Protein And Sugar Yields." ScienceDaily. www.sciencedaily.com/releases/2007/02/070215133344.htm (accessed October 25, 2014).

Share This



More Plants & Animals News

Saturday, October 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Deep Sea 'mushroom' Could Be Early Branch on Tree of Life

Deep Sea 'mushroom' Could Be Early Branch on Tree of Life

Reuters - Innovations Video Online (Oct. 24, 2014) Miniature deep sea animals discovered off the Australian coast almost three decades ago are puzzling scientists, who say the organisms have proved impossible to categorise. Academics at the Natural History of Denmark have appealed to the world scientific community for help, saying that further information on Dendrogramma enigmatica and Dendrogramma discoides could answer key evolutionary questions. Jim Drury has more. Video provided by Reuters
Powered by NewsLook.com
Black Bear Cub Goes Sunday Shopping

Black Bear Cub Goes Sunday Shopping

Reuters - Light News Video Online (Oct. 23, 2014) Price check on honey? Bear cub startles Oregon drugstore shoppers. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Dances With Wolves in China's Wild West

Dances With Wolves in China's Wild West

AFP (Oct. 23, 2014) One man is on a mission to boost the population of wolves in China's violence-wracked far west. The animal - symbol of the Uighur minority there - is under threat with a massive human resettlement program in the region. Duration: 00:41 Video provided by AFP
Powered by NewsLook.com
Breakfast Debate: To Eat Or Not To Eat?

Breakfast Debate: To Eat Or Not To Eat?

Newsy (Oct. 23, 2014) Conflicting studies published in the same week re-ignited the debate over whether we should be eating breakfast. 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:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

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