http://www.sciencedaily.com/releases/2008/02/080208174317.htm

Tasty Low Calorie Foods: Fat Hidden In Fiber May Let You Taste, But Not
Digest, Rich Flavors

ScienceDaily (Feb. 12, 2008) - Low-fat foods are often disappointing to
consumers since removing the fat changes the desirable taste, texture and
aroma of the original product. Now, a team of researchers at the University
of Massachusetts Amherst are developing a new technology that could lead to
low-calorie foods that taste like the real thing.

Reference
a.. Saturated fat
b.. South Beach diet
c.. Food groups
d.. Bran

"Our goal is to keep the fat in the food, but stop it from being digested by
surrounding it with layers of dietary fiber," says Julian McClements, UMass
Amherst professor of food science. "Foods produced with these encapsulated
fats should have the same qualities as conventional high-fat foods." The
research team includes McClements and UMass Amherst food science professors
Eric Decker and Yeonhwa Park.

To make the encapsulated fats, small oil droplets are formed by mixing oil,
water and a surfactant in a process similar to making salad dressing. The
surfactant coats the droplets and keeps them separate from the water until
fiber is added to the mix in the final step. Controlling the electrical
charges of the surfactant and the fiber molecules allows the oil to attract
the fiber like a magnet. Droplets are usually coated with two to three
layers of fiber, and other substances such as proteins can be incorporated
to hold the fiber layers together or to provide additional benefits.

The process is suitable for encapsulating a wide range of fats and oils,
everything from orange oil to olive oil, and uses fiber obtained from
apples, oranges, seaweed or shellfish. All the ingredients are food-grade,
so this technology requires no FDA approval to use. Encapsulated fats can be
used in emulsion-based foods such as beverages, sauces, desserts, yoghurt
and salad dressings. They remain stable in acidic foods and during freezing,
thawing and cooking, and can also handle large amounts of salt.

How much of the fat can be digested is controlled by the number of layers
and the types of fiber used. The team is currently experimenting with ways
to chemically link the fiber layers to enhance their ability to stay intact
around the fat droplets.

Layers of fiber could also be used to encapsulate vitamins and antioxidants,
enabling them to survive a trip through the stomach and be released in the
small intestine for absorption by the body, and this process could allow
ingredients with proven health benefits but unpleasant taste, like Omega-3
fatty acids, to be included in a wide variety of foods.

Future research by the team will focus on customizing the layers of fiber to
respond to different environments, and testing to determine whether this
method can be used as a delivery system for therapeutic drugs that can
dissolve in fats. "It should be possible to develop coatings that release
drugs at specific sites within the human body," says McClements.

McClements and Decker are currently seeking a patent, and the technology is
available for licensing and research collaboration. Interested parties can
contact the UMass Amherst Office of Commercial Ventures and Intellectual
Property

Adapted from materials provided by University of Massachusetts Amherst.
--

Ken

"Buddhism elucidates why we are sentient."
"Buddhism follows thought throughout the Universe."
"Karma means that you don't get away with anything."

Archived from group: alt>support>diet>low-carb