As the world seeks new ways to prevent and treat chronic diseases such as diabetes, heart disease and cancer, more research continues to be conducted on the benefits of certain foods in reducing people’s risk of contracting these ailments.
Legumes in particular are often cited as being high in antioxidants, which have the property of being able to fight off free radical cells within the body, reducing the risk of cancer and other chronic diseases. A recent study further investigated these connections, as researchers focused on the benefits of one type of legume, dry beans, in reducing the risk of mammary cancer.
To address whether dry bean consumption is associated with a reduction in mammary cancer, scientists at Colorado State University studied the anticancer activity of six market classes of bean including; small red, great northern, navy, black, dark red and white kidney bean in the diet of laboratory animals. They also evaluated whether the level of antioxidants or seed coat pigments in the bean were related to mammary cancer. The study was funded by a grant from the Beans for Health Alliance, and the Colorado Agricultural Experiment Station with assistance from Archer Daniels Midland Co. and Bush Brothers Inc. Results from the study were published in the January-February 2009 issue of the journal Crop Science.
Cooked dry bean powder from the six market classes and a control group without beans in the diet were fed to laboratory rats in a standard preclinical model for breast cancer. The dry bean powders were also evaluated for antioxidant capacity, phenolic and flavonoid content; all factors thought to be associated with anticancer activity. Chemical analysis of the beans revealed that total phenolic and flavonoid content varied widely among market classes and the differences were strongly associated with seed coat color; where colored beans had ten times or greater phenolic and flavonoid content compared to white beans. Antioxidant capacity of the beans also varied widely among dry bean market classes and were highly related to seed coat color, where colored beans had approximately two to three times greater antioxidant capacity than white beans.
Dry bean consumption from every market class reduced cancer incidence (number of animals with one tumor) and tumor number per animal compared to the control group. Cancer incidence was reduced from 95% in the control group to 67% in animals fed beans. The average number of malignant tumors was also reduced from 3.2 in the control group to 1.4 tumors per animal in the group fed bean. No associations were observed between phenolic content, flavonoid content and antioxidant capacity with cancer among the bean market classes. These results clearly suggest that the anticancer activity in dry bean is not associated with seed color or antioxidant capacity.
Research is ongoing at Colorado State University to investigate the mechanisms and molecules that contribute to the anticancer properties of dry bean. Clinical trials are also underway to determine if bean in the diet of humans are associated with biomarkers for cancer incidence.
The full article is available for no charge for 30 days following the date of this summary. View the abstract at http://crop.scijournals.org/cgi/content/abstract/49/1/179.
Crop Science is the flagship journal of the Crop Science Society of America. Original research is peer-reviewed and published in this highly cited journal. It also contains invited review and interpretation articles and perspectives that offer insight and commentary on recent advances in crop science. For more information, visit http://crop.scijournals.org
The Crop Science Society of America (CSSA), founded in 1955, is an international scientific society comprised of 6,000+ members with its headquarters in Madison, WI. Members advance the discipline of crop science by acquiring and disseminating information about crop breeding and genetics; crop physiology; crop ecology, management, and quality; seed physiology, production, and technology; turfgrass science; forage and grazinglands; genomics, molecular genetics, and biotechnology; and biomedical and enhanced plants.
CSSA fosters the transfer of knowledge through an array of programs and services, including publications, meetings, career services, and science policy initiatives.
Sara Uttech | Newswise Science News
Plasma-zapping process could yield trans fat-free soybean oil product
02.12.2016 | Purdue University
New findings about the deformed wing virus, a major factor in honey bee colony mortality
11.11.2016 | Veterinärmedizinische Universität Wien
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
02.12.2016 | Medical Engineering
02.12.2016 | Agricultural and Forestry Science
02.12.2016 | Physics and Astronomy