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Soybeans No Longer 'A Musical Fruit?'

Date:
October 28, 2008
Source:
American Chemical Society
Summary:
Soybeans may drop off the list of musical fruit. Scientists in Singapore are reporting victory over some consumers' No. 1 complaint about soy products -- the "flatulence factor" caused by indigestible sugars found in soy.

Food chemists have removed gas-producing sugars in products containing soy -- a find that could be music to consumers' ears.
Credit: US Department of Agriculture

Soybeans may drop off the list of musical fruit. Scientists in Singapore are reporting victory over some consumers' No. 1 complaint about soy products — the "flatulence factor" caused by indigestible sugars found in soy.

Scientists have now developed a method for significantly reducing the amount of flatulence-causing carbohydrates in soy yogurt while raising the levels of healthy antioxidants known as isoflavones.

In the study, Dejian Huang and colleagues note that soy yogurt has a global market share of only 1.9 percent, even though it has a number of health advantages over dairy-based yogurt. That's partly because of the flatulence-causing compounds in soy. "It would be desirable to remove the flatulence-causing raffinose and stachyose from the soy yogurt to improve consumers' preferences. The objective of this study was to develop a new soy yogurt enriched with isoflavones with reduced levels of flatulence-causing oligosaccharides," the scientists said.

The researchers grew soybeans in the presence of a fungus that produced enzymes capable of degrading the undesired sugars. "We have demonstrated for the first time that germinated black soybeans under fungal stress can be fermented into a soy yogurt which features a low amount of flatulence-causing oligosaccharides but with a significant level of isoflavones," says Huang.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Feng et al. Novel Process of Fermenting Black Soybean [Glycine max (L.) Merrill] Yogurt with Dramatically Reduced Flatulence-Causing Oligosaccharides but Enriched Soy Phytoalexins. Journal of Agricultural and Food Chemistry, November 2008 DOI: 10.1021/jf801905y

Cite This Page:

American Chemical Society. "Soybeans No Longer 'A Musical Fruit?'." ScienceDaily. ScienceDaily, 28 October 2008. <www.sciencedaily.com/releases/2008/10/081027112825.htm>.
American Chemical Society. (2008, October 28). Soybeans No Longer 'A Musical Fruit?'. ScienceDaily. Retrieved September 19, 2014 from www.sciencedaily.com/releases/2008/10/081027112825.htm
American Chemical Society. "Soybeans No Longer 'A Musical Fruit?'." ScienceDaily. www.sciencedaily.com/releases/2008/10/081027112825.htm (accessed September 19, 2014).

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