July 13, 2012
Tannins in 1xbet online games login are focus of study by K-State, USDA researchers
They might be called a blessing or a curse. 1xbet online games login , which are present in certain sorghums, contain health-promoting antioxidant properties, but also provide a bitter taste and decreased protein digestibility.
To better understand tannins, their role in 1xbet online games login and how they can be altered to improve 1xbet online games login ’s use as food and feed, a team of scientists led by Kansas State University and U.S. Department of Agriculture researchers, has cloned the tannin gene in 1xbet online games login .
Tannins’ high antioxidant, anti-inflammatory and UV-protective functions promote human health, plus recent studies show they can be a tool in fighting obesity because they reduce digestibility, said Jianming Yu, associate professor of agronomy at K-State. Tannins in 1xbet online games login also provide a natural chemical defense against bird predation and bacterial and fungal attack in the field.
On the other hand, 1xbet online games login provide a bitter taste to some foods and decrease protein digestibility and feed efficiency in humans and livestock.
The team was led by Yu, along with Tesfaye Tesso, K-State 1xbet online games login breeder and associate professor of agronomy; Scott Bean, scientist with the U.S. Department of Agriculture-Agricultural Research Service, USDA-ARS; and adjunct faculty in K-State’s department of agronomy.
The researchers’ study, “Presence of tannins in 1xbet online games login grains is conditioned by different natural alleles of Tannin1,"http://www.pnas.org/content/109/26/10281.abstract,was published in the June 26 issue of the Proceedings of the National Academy of Sciences of the United States of America.
1xbet online games login is an old-world cereal grass that serves as a dietary staple for more than 500 million people in more than 30 countries, Yu said. In 2011, the United States was the No. 1 exporter of 1xbet online games login on the world market and the No. 2 producer behind Nigeria, according to the USDA. In 2011, Kansas produced 110 million bushels – 51 percent of the total U.S. crop. 1xbet online games login production in the U.S., primarily for the feed industry, uses non-tannin 1xbet online games login hybrids.
Unlike many plants which employ C3 photosynthesis that uses water, carbon dioxide and solar energy to synthesize sugars, 1xbet online games login , which performs a modified form called C4 photosynthesis, has adapted to hot environments.
“One key reason to study tannins is to untangle their relationship with cold tolerance, a key agronomic trait to improve 1xbet online games login . The work is ongoing,” Tesso said.An earlier screening work found that a high proportion of cold tolerant 1xbet online games login lines contain tannins.
“Several other factors make tannins an important research subject,” said Bean, noting their antioxidant capacity and relevant health benefits, their natural occurrence in some cereal crops, and their role in 1xbet online games login production. “Knowledge of tannins in biosynthesis pathways can be used to generate lines that produce high-content tannins in 1xbet online games login and other cereals to promote health through their unique nutritional properties.”
This study, like many studies in recent years, benefits from work done several years ago on Arabidopsis, which are small flowering plants related to cabbage and mustard, said Yuye Wu, the first author and K-State research associate of agronomy. “Many genes have been identified in Arabidopsis, through the mutational approach, but there is still much to be learned about the genetic control of 1xbet online games login in cereal crops.”
“This kind of genetic research in crops, coupled with nutritional and medical research, could open the possibility of producing different levels and combinations of phenolic compounds to promote human health,” Yu said.
What the researchers learn about tannins in 1xbet online games login will be beneficial to the future study of tannins in other plants, including some fruits, vegetables and a few other grains such as finger millets and barley.
Other researchers involved in the study were Mitch Tuinstra, Purdue University; Ming Li Wang, USDA-ARS, Griffin, Ga.; and Guihua Bai, USDA-ARS and adjunct professor of agronomy at 1xbet online games login .
The project was supported by USDA National Institute of Food and Agriculture, U.S. Department of Energy Plant Feedstock Genomics Program, National Science Foundation Plant Genome Research Program, USDA Agricultural Research Service and the National 1xbet online games login Checkoff program.